Inverter power saw tooth source device and control method

Abstract

The application discloses an inverter power sawtooth source device and a control method. The device comprises a direct current main power supply, a first inverter sawtooth module, a second inverter sawtooth module, a sawtooth output control module and a controller. The first inverter sawtooth module comprises a first sawtooth rising circuit, a first sawtooth capacitor and a first sawtooth falling circuit. The second inverter sawtooth module comprises a second sawtooth rising circuit, a second sawtooth capacitor and a second sawtooth falling circuit. The two inverter sawtooth modules are staggered and connected in parallel. The controller is used for outputting a driving pulse to the two inverter sawtooth modules and the sawtooth output control module. Thus, the application ensures that the two inverter sawtooth modules work in the overlapping stage of charging and discharging under the action of the driving pulse, and do not affect each other. The two inverter sawtooth modules are in a soft switching control state, the switching loss is reduced, and the output power and the output frequency of the inverter power sawtooth source are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of electronic technology, and in particular to an inverter power sawtooth source device and a control method. BACKGROUND

[0002] Power supply is the power support of electronic equipment in modern communication, aerospace, biotechnology, computer and other high-tech fields, and it is the most important part of electronic equipment. At present, the power supply industry is becoming the focus of the electronic manufacturing industry. With the emergence of large-scale integrated circuits, especially the development of very large-scale integrated circuits and ultra-high-speed integrated circuits, the volume of various electronic equipment has been significantly reduced, and the power supply that provides energy for electronic equipment is urgently needed to have the characteristics of small volume, high power density, high reliability, high efficiency, and be able to output low-voltage large current. However, the traditional linear power supply system has been unable to meet the application requirements in terms of volume, efficiency, performance and reliability.

[0003] At present, the power supply that can meet the above requirements includes a sawtooth wave output device. The working principle of the sawtooth wave output device is to charge a capacitor through a constant current source, and to make the capacitor discharge quickly by using a switching circuit to generate a sawtooth wave signal. However, the current sawtooth wave output device can only output a sawtooth wave signal, and cannot output a sawtooth wave signal with power, so it cannot be used as a power supply with power. Moreover, the charging and discharging time of the capacitor is relatively long, the output sawtooth wave efficiency is low, and it is also unstable. SUMMARY

[0004] The present application provides an inverter power sawtooth source device and a control method.

[0005] According to the first aspect of the present application, a kind of inverter power sawtooth source device, the device includes auxiliary power supply, controller, first inverter sawtooth module, second inverter sawtooth module, DC main power supply, sawtooth output control module and load, the first inverter sawtooth module includes first sawtooth rise circuit, first sawtooth capacitor and first sawtooth fall circuit, the second inverter sawtooth module includes second sawtooth rise circuit, second sawtooth capacitor and second sawtooth fall circuit;The auxiliary power supply is connected with the controller, for the controller power supply;The output of the controller is respectively connected with the input of the first sawtooth rise circuit, the input of the first sawtooth fall circuit, the input of the second sawtooth rise circuit and the input of the second sawtooth fall circuit, for output first drive pulse to the first sawtooth rise circuit, output second drive pulse to the second sawtooth fall circuit, output third drive pulse to the first sawtooth fall circuit and output fourth drive pulse to the second sawtooth rise circuit;The output of the controller is also connected with the sawtooth output control module, also for simultaneously output fifth drive pulse to the sawtooth output control module in the case where the second drive pulse is output to the second sawtooth fall circuit, and for output fifth drive pulse to the sawtooth output control module in the case where the third drive pulse is output to the first sawtooth fall circuit;Wherein, the first drive pulse, the second drive pulse, the third drive pulse, the fourth drive pulse and the fifth drive pulse are synchronous pulse;The first drive pulse, the second drive pulse, the third drive pulse, the fourth drive pulse and the fifth drive pulse are the synchronous pulse that the controller is periodically distributed with set time interval generates;The input of the first sawtooth rise circuit is connected with the DC main power supply and the output of the controller, the output of the first sawtooth rise circuit is connected with the first sawtooth capacitor;The input of the first sawtooth fall circuit is connected with the output of the controller and the first sawtooth capacitor, and the output of the first sawtooth fall circuit is connected with DC main power supply;One end of the first sawtooth capacitor is connected with the output of the first sawtooth rise circuit, the input of the first sawtooth fall circuit and the sawtooth output control module, and the other end of the first sawtooth capacitor is grounded;The input of the second sawtooth rise circuit is connected with the DC main power supply and the controller, and the output of the second sawtooth rise circuit is connected with the second sawtooth capacitor;The input of the second sawtooth fall circuit is connected with the controller and the second sawtooth capacitor, and the output of the second sawtooth fall circuit is connected with DC main power supply;One end of the second sawtooth capacitor is connected with the output of the second sawtooth rise circuit, the input of the second sawtooth fall circuit and the sawtooth output control module, and the other end of the second sawtooth capacitor is grounded.One end of the direct current main power source is connected with the input end of the first sawtooth rising circuit, the output end of the first sawtooth falling circuit, the input end of the second sawtooth rising circuit and the output end of the second sawtooth falling circuit respectively, and the other end of the direct current main power source is grounded, for providing energy for the first sawtooth rising circuit and the second sawtooth rising circuit; the input end of the sawtooth output control module is connected with the first sawtooth capacitor and the second sawtooth capacitor, the output end of the sawtooth output control module is connected with the load, for outputting the inverter power sawtooth source; one end of the load is connected with the output end of the sawtooth output control module, and the other end of the load is grounded.

[0006] According to an embodiment of the present application, the first driving pulse and the fourth driving pulse are 180° different, and the second driving pulse and the third driving pulse are 180° different.

[0007] According to an embodiment of the present application, the first sawtooth rising circuit, the first sawtooth falling circuit, the second sawtooth rising circuit and the second sawtooth falling circuit are inverter circuits.

[0008] According to an embodiment of the present application, the inverter circuit comprises two power tubes, one inductor and two diodes.

[0009] According to an embodiment of the present application, the sawtooth output control module comprises a power tube.

[0010] According to an embodiment of the present application, the controller comprises a field programmable gate array chip.

[0011] According to the second aspect of the present application, a control method of the inverter power sawtooth source device is also provided, which is applied to the inverter power sawtooth source device, and the control method comprises: operation 1, starting the direct current main power supply and the auxiliary power supply, and entering operation 2; operation 2, the controller generates periodic five-way synchronous pulse first driving pulse, second driving pulse, third driving pulse, fourth driving pulse and fifth driving pulse distributed at appropriate time intervals, and enters operation 3; operation 3, when the synchronous pulse first driving pulse arrives, the first sawtooth rising circuit and the second sawtooth falling circuit start working at the same time, and energy transfer is performed; the first sawtooth rising circuit of the first inverter sawtooth module works under the control of the synchronous pulse first driving pulse set by the controller, and the energy of the direct current main power supply starts to be transferred and stored to the first sawtooth rising circuit at the pulse rising edge, the controller outputs the pulse falling edge to end the energy transfer according to the preset energy of the system, and enters operation 4; the working of the first sawtooth falling circuit of the first inverter sawtooth module is maintained; the working of the second sawtooth rising circuit of the second inverter sawtooth module is maintained; the second sawtooth falling circuit of the second inverter sawtooth module is started by the controller, the energy is transferred back to the direct current main power supply, and the second sawtooth capacitor is discharged; the working of the sawtooth output control module is maintained; operation 4, when the synchronous pulse second driving pulse and the fifth driving pulse arrive, the first sawtooth rising circuit, the first sawtooth falling circuit and the sawtooth output control module start working at the same time, and energy transfer is performed, and the remaining parallel working states are maintained; the first sawtooth rising circuit of the first inverter sawtooth module is started by the controller, the energy is transferred to the first sawtooth capacitor, and the rising edge of the first inverter power sawtooth signal is formed; when the energy of the first sawtooth rising circuit is completely transferred to the first sawtooth capacitor, operation 5 is entered; the working of the first sawtooth falling circuit of the first inverter sawtooth module is maintained; the working of the second sawtooth rising circuit of the second inverter sawtooth module is maintained; the second sawtooth rising circuit of the second inverter sawtooth module works under the control of the synchronous pulse second driving pulse set by the controller, the energy of the second sawtooth capacitor starts to be transferred and stored to the second sawtooth falling circuit at the pulse rising edge, the controller outputs the pulse falling edge to end the energy transfer according to the preset energy of the system; the sawtooth output control module works under the control of the synchronous pulse fifth driving pulse set by the controller, and outputs the inverter power sawtooth source, when the output inverter power sawtooth source reaches the set width, the controller starts the output control; operation 5, when the synchronous pulse third driving pulse and the fifth driving pulse arrive, the first sawtooth falling circuit, the second sawtooth rising circuit and the sawtooth output control module start working at the same time, and energy transfer is performed, and the remaining parallel working states are maintained; the working of the first sawtooth rising circuit of the first inverter sawtooth module is maintained;The first sawtooth falling circuit of the first inverter sawtooth module works under the control of the controller setting the third driving pulse of the synchronization pulse, and the energy of the first sawtooth capacitor starts to be transferred and stored to the first sawtooth falling circuit at the rising edge of the pulse, and when the energy of the first sawtooth capacitor is completely transferred to the first sawtooth falling circuit, operation 6 is entered; the second sawtooth rising circuit of the second inverter sawtooth module is started by the controller, and the energy is transferred to the second sawtooth capacitor to form the rising edge of the second inverter power sawtooth wave signal; the working of the second sawtooth falling circuit of the second inverter sawtooth module is kept; the sawtooth output control module works under the control of the controller setting the fifth driving pulse of the synchronization pulse, and outputs the inverter power sawtooth source, and when the inverter power sawtooth source reaches the set width, the controller starts to stop the output control; operation 6: the fourth driving pulse of the synchronization pulse arrives, and the first sawtooth falling circuit and the second sawtooth rising circuit start to work simultaneously, and energy transfer is performed; the working of the first sawtooth rising circuit of the first inverter sawtooth module is kept; the first sawtooth falling circuit of the first inverter sawtooth module is started by the controller, and the energy is transferred back to the direct-current main power supply, and the first sawtooth capacitor is discharged, and the operation 2 is returned; the second sawtooth rising circuit of the second inverter sawtooth module works under the control of the controller setting the fourth driving pulse of the synchronization pulse, and the energy of the direct-current main power supply starts to be transferred and stored to the second sawtooth rising circuit at the rising edge of the pulse, and the controller outputs the falling edge to end the energy transfer according to the preset energy of the system; the working of the second sawtooth falling circuit of the second inverter sawtooth module is kept; and the working of the sawtooth output control module is kept.

[0012] According to a third aspect of the present application, a control device of an inverter power sawtooth source device is provided, and the control device comprises a processor and a memory, and the memory stores at least one instruction, which is loaded and executed by the processor to implement the operations performed by the control method according to the second aspect.

[0013] According to a fifth aspect of the present application, an inverter is provided, and the inverter comprises the inverter unit.

[0014] The embodiment of the present application realizes the alternate output of the inverter power sawtooth source by two inverter sawtooth modules and the output of the continuous inverter power sawtooth source by the rising edge of the inverter power sawtooth wave signal of the two inverter sawtooth modules, guarantees the charging and discharging of the sawtooth capacitor in the positive and negative half cycles of the driving pulse, improves the output power of the inverter power sawtooth source, realizes the soft switching conduction of the two inverter sawtooth modules, reduces the switching loss, reduces the cost, and improves the stability of the inverter power sawtooth source output.

[0015] It should be understood that the teachings of the present application do not require all the beneficial effects described above to be achieved, but specific technical solutions can achieve specific technical effects, and other embodiments of the present application can also achieve beneficial effects not mentioned above. BRIEF DESCRIPTION OF DRAWINGS

[0016] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when read in conjunction with the accompanying drawings, in which:

[0017] In the drawings, identical or corresponding reference signs refer to identical or corresponding parts.

[0018] Figure 1 A circuit schematic diagram of the inverter power sawtooth source device of the embodiment of the present application is shown;

[0019] Figure 2 A structural block diagram of the inverter sawtooth module of the inverter power sawtooth source device of the embodiment of the present application is shown;

[0020] Figure 3 A circuit schematic diagram of the first inverter sawtooth module of the inverter power source device of the embodiment of the present application is shown;

[0021] Figure 4 A corresponding relationship diagram of the driving pulse of the inverter sawtooth module, the inverter power sawtooth wave signal of the sawtooth capacitor, and the inverter power sawtooth source of the embodiment of the present application is shown;

[0022] Figure 5 A corresponding relationship diagram of the driving pulse of the inverter sawtooth module and the inverter power sawtooth wave signal of the sawtooth capacitor of the embodiment of the present application is shown;

[0023] Figure 6The corresponding relation diagram of the driving pulse of the sawtooth output control module and the inverter power sawtooth source is shown. DETAILED DESCRIPTION

[0024] The principles and spirits of the present application will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present application, and do not limit the scope of the present application in any way. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0025] The technical solutions of the present application will be further described in detail below with reference to the drawings and specific embodiments.

[0026] Figure 1 The circuit schematic diagram of the inverter power sawtooth source device of the embodiment of the present application is shown.

[0027] Reference Figure 1The inverter power sawtooth source device 10 comprises an auxiliary power supply Ea, a controller Kp, a first inverter sawtooth module M1, a second inverter sawtooth module M2, a direct current main power supply Ep, a sawtooth output control module Ks and a load Rs, the first inverter sawtooth module M1 comprises a first sawtooth rising circuit Sr1, a first sawtooth capacitor and a first sawtooth falling circuit Sd1, the second inverter sawtooth module M2 comprises a second sawtooth rising circuit Sr2, a second sawtooth capacitor and a second sawtooth falling circuit Sd2; the auxiliary power supply Ea is connected with the controller Kp and is used for supplying power to the controller Kp; the output end of the controller Kp is connected with the input end of the first sawtooth rising circuit Sr1, the input end of the first sawtooth falling circuit Sd1, the input end of the second sawtooth rising circuit Sr2 and the input end of the second sawtooth falling circuit Sd2 respectively and is used for outputting a first driving pulse to the first sawtooth rising circuit Sr1, a second driving pulse to the second sawtooth falling circuit Sd2, a third driving pulse to the first sawtooth falling circuit Sd1 and a fourth driving pulse to the second sawtooth rising circuit Sr2; the output end of the controller Kp is also connected with the sawtooth output control module Ks and is also used for outputting a fifth driving pulse to the sawtooth output control module Ks simultaneously in the case of the second driving pulse to the second sawtooth falling circuit Sd2 and is used for outputting the fifth driving pulse to the sawtooth output control module Ks in the case of the third driving pulse to the first sawtooth falling circuit Sd1; wherein the first driving pulse, the second driving pulse, the third driving pulse, the fourth driving pulse and the fifth driving pulse are synchronous pulses; the first driving pulse, the second driving pulse, the third driving pulse, the fourth driving pulse and the fifth driving pulse are synchronous pulses generated by the controller Kp periodically at a set time interval; the input end of the first sawtooth rising circuit Sr1 is connected with the direct current main power supply Ep and the output end of the controller Kp, the output end of the first sawtooth rising circuit Sr1 is connected with the first sawtooth capacitor; the input end of the first sawtooth falling circuit Sd1 is connected with the output end of the controller Kp and the first sawtooth capacitor, the output end of the first sawtooth falling circuit Sd1 is connected with the direct current main power supply Ep; one end of the first sawtooth capacitor is connected with the output end of the first sawtooth rising circuit Sr1, the input end of the first sawtooth falling circuit Sd1 and the sawtooth output control module Ks, the other end of the first sawtooth capacitor is grounded; the input end of the second sawtooth rising circuit Sr2 is connected with the direct current main power supply Ep and the controller Kp, the output end of the second sawtooth rising circuit Sr2 is connected with the second sawtooth capacitor; the input end of the second sawtooth falling circuit Sd2 is connected with the controller Kp and the second sawtooth capacitor, the output end of the second sawtooth falling circuit Sd2 is connected with the direct current main power supply Ep; one end of the second sawtooth capacitor is connected with the output end of the second sawtooth rising circuit Sr2, the input end of the second sawtooth falling circuit Sd2 and the sawtooth output control module Ks, the other end of the second sawtooth capacitor is grounded.One end of the direct current main power supply Ep is connected with the input end of the first sawtooth rising circuit Sr1, the output end of the first sawtooth falling circuit Sd1, the input end of the second sawtooth rising circuit Sr2 and the output end of the second sawtooth falling circuit Sd2 respectively, and the other end of the direct current main power supply Ep is grounded, for providing energy for the first sawtooth rising circuit Sr1 and the second sawtooth rising circuit Sr2; the input end of the sawtooth output control module Ks is connected with the first sawtooth capacitor and the second sawtooth capacitor, the output end of the sawtooth output control module Ks is connected with the load Rs, for outputting the inverter power sawtooth source; one end of the load Rs is connected with the output end of the sawtooth output control module Ks, and the other end of the load Rs is grounded.

[0028] Specifically, the first drive pulse, the second drive pulse, the third drive pulse and the fourth drive pulse are four synchronous pulses periodically distributed by the controller Kp according to the set time interval, and the four synchronous pulses are timed by the same clock, so that after the controller Kp sends the four pulses into the corresponding circuits respectively, each circuit will work in the time when the corresponding drive pulse is at high level to control the charging and discharging of the two sawtooth capacitors of the two inverter sawtooth modules respectively to stagger the output of the inverter power sawtooth wave signals without affecting each other. Moreover, the controller outputs the fifth drive pulse to the sawtooth output control module Ks at the same time when the second drive pulse is output to the second sawtooth falling circuit Sd2 to make the sawtooth output control module Ks obtain the rising edge of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1, and the controller outputs the fifth drive pulse to the sawtooth output control module Ks at the same time when the third drive pulse is output to the first sawtooth falling module Sd1 to make the sawtooth output control module Ks obtain the rising edge of the second inverter power sawtooth wave signal of the second sawtooth capacitor Vc2, and finally the sawtooth output control module Ks outputs the inverter power sawtooth source composed of the rising edge of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1 and the rising edge of the second inverter power sawtooth wave signal of the second sawtooth capacitor Vc2.

[0029] In an embodiment of the present application, the first drive pulse and the fourth drive pulse are 180° apart, and the second drive pulse and the third drive pulse are 180° apart.

[0030] In an embodiment of the present application, the first sawtooth rising circuit, the first sawtooth falling circuit, the second sawtooth rising circuit and the second sawtooth falling circuit are inverter circuits.

[0031] Specifically, the first sawtooth rising circuit Sr1, the first sawtooth falling circuit Sd1, the second sawtooth rising circuit Sr2 and the second sawtooth falling circuit Sd2 are all the same inverter circuit, which can control the charging and discharging of the first sawtooth capacitor Vc1 and the second sawtooth capacitor Vc2 by controlling the charging inductance in the inverter circuit after receiving the drive pulse sent by the controller.

[0032] Figure 2 The structural block diagram of the inverter sawtooth module of the inverter power sawtooth source device is shown.

[0033] In an embodiment of the present application, the inverter circuit can include two power tubes, one inductor and two diodes.

[0034] Specifically, referring to Figure 2 , the first sawtooth rising circuit can include an inductor L11, a switch S11, a switch S12, a diode D11 and a diode D12. When the switch S11 and the switch S12 are simultaneously turned on, a loop can be formed with the inductor branch, and the inductor L11 stores energy. When the switch S11 and the switch S12 are simultaneously turned off, a loop is formed with the inductor branch, the diode D11 and the diode D12, and the process of charging the first sawtooth capacitor Vc1 to absorb the energy of the inductor L11 forms a sawtooth rising wave. The first sawtooth falling circuit can include an inductor L12, a switch S13, a switch S14, a diode D13 and a diode D14. When the switch S13 and the switch S14 are simultaneously turned on, the first sawtooth capacitor Vc1 releases energy through the switch S13 and the switch S14 to form a loop with the inductor branch. At this time, the inductor L12 stores the energy released by the first sawtooth capacitor Vc1, and the process of discharging the first sawtooth capacitor Vc1 forms a sawtooth falling wave. When the switch S13 and the switch S14 are simultaneously turned off, a loop is formed with the inductor branch, the diode D13 and the diode D14 to release the energy stored in the inductor L12 back to the DC main power Ep. This cycle is repeated.

[0035] Further, the working principles of the second sawtooth rising circuit Sr2 and the second sawtooth falling circuit Sd2 are the same as described above. The two inverter sawtooth modules are staggered and connected in parallel. Finally, the first inverter power sawtooth wave signal rising wave of the first sawtooth capacitor Vc1 and the second inverter power sawtooth wave signal rising wave of the second sawtooth capacitor Vc2 are connected in parallel and output to the sawtooth output control module Ks.

[0036] In an embodiment of the present application, the inverter sawtooth module includes two power tubes, one inductor and two power tubes capable of realizing forward conduction and reverse blocking.

[0037] Figure 3 The circuit principle diagram of the first inverter sawtooth module of the inverter power source device is shown.

[0038] Referring to Figure 3The first sawtooth rising circuit of the first inverter sawtooth module M1 comprises a power tube S11, a power tube S12, a diode D11, a diode D12 and an inductor L11; the first sawtooth falling circuit of the first inverter sawtooth module M1 comprises a power tube S13, a power tube S14, a diode D13, a diode D14 and an inductor L12, wherein the drain of the power tube S11 is connected with a direct current main power supply, the gate of the power tube S11, the gate of the power tube S12, the gate of the power tube S13 and the gate of the power tube S14 are connected with a controller signal output end, the source of the power tube S11 is connected with the cathode of the diode D11 and one end of the inductor L11, the anode of the diode D11 is grounded, the other end of the inductor L11 is connected with the anode of the diode D12 and the drain of the power tube S12, the source of the power tube S12 is grounded, the cathode of the diode D12 is connected with the input end of a sawtooth capacitor Vc1, the drain of the power tube S13 and the input end of a sawtooth output control module Ks, the source of the power tube S13 is connected with the cathode of the diode D13 and one end of the inductor L12, the anode of the diode D13 is grounded, the other end of the inductor L12 is connected with the anode of the diode D14 and the drain of the power tube S14, the source of the power tube S14 is grounded, and the cathode of the diode D14 is connected with the direct current main power supply.

[0039] Further, the circuit principle diagram of the second inverter sawtooth module M2 is the same as that of the first inverter sawtooth module.

[0040] It should be noted that the first sawtooth rising circuit Sr1, the first sawtooth falling circuit Sd1, the second sawtooth rising circuit Sr2 and the second sawtooth falling circuit Sd2 are not specifically limited, the first sawtooth rising circuit Sr1 can be any inverter circuit capable of charging the first sawtooth capacitor Vc1 according to the driving pulse output by the controller, the first sawtooth falling circuit Sd1 can be any inverter circuit capable of discharging the first sawtooth capacitor Vc1 according to the driving pulse output by the controller, the second sawtooth rising circuit Sr2 can be any inverter circuit capable of charging the first sawtooth capacitor Vc1 according to the driving pulse output by the controller, and the second sawtooth falling circuit Sr2 can be any inverter circuit capable of discharging the first sawtooth capacitor Vc1 according to the driving pulse output by the controller.

[0041] Figure 4 The corresponding relationship diagram of the driving pulse of the inverter sawtooth module, the inverter power sawtooth wave signal of the sawtooth capacitor and the inverter power sawtooth source of the embodiment of the application is shown.

[0042] Reference Figure 4 , Figure 4It can be seen that the driving pulse of the inverter sawtooth module and the corresponding relationship of the inverter power sawtooth source. Specifically, in the first sawtooth rising module Sr1, when the pulse width of the first driving pulse is small, the energy of the direct current main power Ep to the inductor L11 is small, at this time the amplitude of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1 is low; when the pulse width of the first driving pulse is large, the energy of the direct current main power Ep to the inductor L11 is large, at this time the amplitude of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1 is high, thus the size of the energy stored in the inductor L11 can be controlled by changing the pulse width of the first driving pulse. In the first sawtooth falling module Sd2, it can be seen that the size of the inductor L12 affects the speed of the discharge of the first sawtooth capacitor Vc1 to the inductor L12, thus the degree of the falling of the first inverter power sawtooth wave signal of the first sawtooth capacitor can be controlled by changing the pulse width of the third driving pulse, when the energy of the first sawtooth capacitor Vc1 is large, the pulse width of the third driving pulse is increased, so that the energy of the first sawtooth capacitor Vc1 can be completely transferred to the inductor L12, when the energy of the first sawtooth capacitor Vc1 is small, the pulse width of the third driving pulse is reduced, so that the energy of the first sawtooth capacitor Vc1 can be completely transferred to the inductor L12, the loss of the power tube is reduced and the efficiency is improved.

[0043] Further, in the second sawtooth rising circuit Sr2 and the second sawtooth falling circuit Sd2, the principle of the action of the second driving pulse and the fourth driving pulse is the same as described above.

[0044] Thus, the two-way inverter sawtooth modules are staggered and connected in parallel, in the positive and negative half cycles of the driving pulse, the charging and discharging of the sawtooth capacitor are independent and do not affect each other.

[0045] Figure 5 The corresponding relationship diagram of the driving pulse of the inverter sawtooth module and the inverter power sawtooth wave signal of the sawtooth capacitor is shown.

[0046] In an embodiment of the present application, the first driving pulse includes at least pulse signal PWM1 and pulse signal PWM2, the second driving pulse includes at least pulse signal PWM7 and pulse signal PWM8, the third driving pulse includes at least pulse signal PWM3 and pulse signal PWM4, and the fourth driving pulse includes at least pulse signal PWM5 and pulse signal PWM6; wherein the first driving pulse controls the first sawtooth rising circuit Sr1 to work when pulse signal PWM1 and pulse signal PWM2 are both high, the second driving pulse controls the second sawtooth falling circuit Sd2 to work when pulse signal PWM1 and pulse signal PWM2 are both high, the third driving pulse controls the first sawtooth falling circuit Sd1 to work when pulse signal PWM3 and pulse signal PWM4 are both high, and the fourth driving pulse controls the second sawtooth rising circuit Sr1 to work when pulse signal PWM5 and pulse signal PWM6 are both high.

[0047] Reference Figure 5 As can be seen, the relationship between the driving pulse of the two-way inverter sawtooth module and the inverter power sawtooth source, specifically, pulse signal PWM1 is a driving pulse for controlling the switch S11 of the first sawtooth rising module Sr1, and pulse signal PWM2 is a driving pulse for controlling the switch S12; when the pulse width of pulse signal PWM1 and pulse signal PWM2 is small, the energy of the direct current main power source Ep to the inductor L11 is small, at this time, the amplitude of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1 is low; when the pulse width of pulse signal PWM1 and pulse signal PWM2 is large, the energy of the direct current main power source Ep to the inductor L11 is large, at this time, the amplitude of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1 is high, thus the size of the energy stored in the inductor L11 can be controlled by changing the pulse width of pulse signal PWM1 and pulse signal PWM2. Correspondingly, the energy of the first sawtooth capacitor Vc1 is controlled by the energy of the inductor L11, and the energy of the inductor L11 is controlled by the pulse width of pulse signal PWM1 and pulse signal PWM2. Figure 4 As can be seen, the size of the inductor L12 affects the speed of discharging the sawtooth capacitor Vc1 to the inductor L12, thus the degree of sawtooth falling of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1 is controlled by changing the pulse width of pulse signal PWM3 and pulse signal PWM4; when the energy of the sawtooth capacitor Vc1 is large, the pulse width of pulse signal PWM3 is increased, so that the energy of the first sawtooth capacitor Vc1 can be completely transferred to the inductor L12; when the energy of the first sawtooth capacitor Vc1 is small, the pulse width of pulse signal PWM3 is reduced, so that the energy of the first sawtooth capacitor V1 can be completely transferred to the inductor L12, the loss of the MOS tube is reduced, and the efficiency is improved.

[0048] Further, in the second sawtooth rising circuit Sr2 and the second sawtooth falling circuit Sd2, the principle of pulse signal PWM5-PWM8 is the same as above.

[0049] Thus, the two inverter sawtooth modules are staggered in parallel, and under the action of the driving pulse, the charging and discharging of the sawtooth capacitor are independent and do not affect each other.

[0050] In an embodiment of the present application, the sawtooth output control module Ks comprises a power tube.

[0051] Specifically, the sawtooth output control module Ks is composed of a power tube, and under the control of the controller Kp, the fifth driving pulse can be output simultaneously with the second driving pulse output by the controller Kp to obtain the rising edge of the first inverter power sawtooth wave signal of the first sawtooth capacitor, and the fifth driving pulse can be output simultaneously with the third driving pulse output by the controller Kp to obtain the rising edge of the second inverter power sawtooth wave signal of the second sawtooth capacitor to obtain the inverter power sawtooth source.

[0052] Figure 6 The correspondence between the driving pulse of the sawtooth output control module of the embodiment of the present application and the inverter power sawtooth source is shown.

[0053] In an embodiment of the present application, the fifth driving pulse comprises pulse signals PWM9 and PWM10, the pulse signal PWM9 is used to control the sawtooth output control module Ks to obtain the rising edge of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1 when it is at high level, and the pulse signal PWM10 is used to control the sawtooth output control module Ks to obtain the rising edge of the second inverter power sawtooth wave signal of the second sawtooth capacitor Vc2 when it is at high level.

[0054] Specifically, referring to Figure 6 It can be seen that the correspondence between the driving pulse of the sawtooth output control module Ks and the inverter power sawtooth source, the pulse signal PWM9 is used to control the sawtooth output control module Ks to obtain the rising edge of the first inverter power sawtooth wave signal of the first sawtooth capacitor Vc1, and the pulse signal PWM10 is used to control the sawtooth output control module Ks to obtain the rising edge of the second inverter power sawtooth wave signal of the second sawtooth capacitor Vc2. Further, referring to Figure 6When the pulse width of the pulse signal PWM9 output by the controller Kp to the sawtooth output control module Ks is large, the power tube of the sawtooth output control module Ks is turned on for a long time, and the amplitude of the inverter power sawtooth source output is large; when the pulse width of the pulse signal PWM9 output by the controller Kp to the sawtooth output control module Ks is small, the power tube of the sawtooth output control module Ks is turned on for a short time, and the amplitude of the inverter power sawtooth source output is small, thereby the amplitude adjustment of the inverter power sawtooth source can be realized by changing the pulse signal PWM9 and the pulse signal PWM10 output by the controller Kp. Moreover, the pulse signal PWM9 and the pulse signal PWM10 are complementary pulses output alternately, which can make the sawtooth output control module Ks work alternately to output continuous and stable inverter power sawtooth source, and make the power tube of the sawtooth output control module Ks be in the zero-voltage turn-on and zero-voltage turn-off state, so that the soft switching conduction of the sawtooth output control module Ks can be realized, the switching loss is small, the output efficiency of the inverter power sawtooth source is high, and the output of the inverter power sawtooth source is continuous and stable.

[0055] In an embodiment of the present application, the auxiliary power supply is used for the working power supply of the controller, the auxiliary power supply management chip adopts TOP258GN produced by PI Company, the auxiliary power supply adopts flyback converter topology structure, and a TL431-based optocoupler isolated secondary feedback circuit is adopted in the feedback circuit design of the auxiliary power supply circuit, so that the auxiliary power supply has a higher stable output.

[0056] It should be noted that the auxiliary power supply is not specifically limited in the present application, and any auxiliary power supply capable of realizing the functions required by the auxiliary power supply of the present application belongs to the protection scope of the present application.

[0057] In an embodiment of the present application, the controller comprises a field programmable gate array chip.

[0058] Specifically, the controller is used for outputting stable and reliable high-frequency pulse signals, and the controller control chip can adopt a field programmable gate array chip with good stability, strong anti-interference ability and fast running speed, and specifically can adopt a field programmable gate array chip with a model of EP4CE6E22C8N of Altera Company. It should be noted that the controller is not specifically limited in the present application, and any controller capable of realizing the functions required by the controller of the present application belongs to the protection scope of the present application.

[0059] In an embodiment of the present application, before outputting the first driving pulse, the second driving pulse, the third driving pulse, the fourth driving pulse and the fifth driving pulse, the controller is further configured to output stable and reliable first high-frequency pulse signal, second high-frequency pulse signal, third high-frequency pulse signal, fourth high-frequency pulse signal and fifth high-frequency pulse signal, and isolate and amplify the first high-frequency pulse signal, the second high-frequency pulse signal, the third high-frequency pulse signal, the fourth high-frequency pulse signal and the fifth high-frequency pulse signal to obtain the first driving pulse, the second driving pulse, the third driving pulse, the fourth driving pulse and the fifth driving pulse. Thus, the band load capacity of the high-frequency pulse signal is enhanced to better drive the power tube of the inverter sawtooth module and the sawtooth output control module Ks.

[0060] In an embodiment of the present application, the energy of the inverter sawtooth module is obtained from the direct-current main power supply, so that the frequency of the inverter power sawtooth source is the same as the frequency of the high-frequency pulse signal output by the controller, and the distortion degree of the inverter power sawtooth source can be reduced.

[0061] Based on the above inverse variable power sawtooth source output device, the application also provides a control method of the inverse variable power sawtooth source device, the control method is applied to the above inverse variable power sawtooth source device, and the control method comprises the following operations: operation 1: the direct current main power supply and the auxiliary power supply are turned on, and operation 2 is entered; operation 2: the controller generates periodic five-way synchronous pulse first driving pulse, second driving pulse, third driving pulse, fourth driving pulse and fifth driving pulse distributed at appropriate time intervals, and operation 3 is entered; operation 3: the synchronous pulse first driving pulse arrives, the first sawtooth rising circuit and the second sawtooth falling circuit start working at the same time, and energy transfer is performed; the first sawtooth rising circuit of the first inverse variable sawtooth module works under the control of the controller set synchronous pulse first driving pulse, and the energy of the direct current main power supply starts to be transferred and stored to the first sawtooth rising circuit at the pulse rising edge, the controller outputs the pulse falling edge to end the energy transfer according to the preset energy of the system, and operation 4 is entered; the working of the first sawtooth falling circuit of the first inverse variable sawtooth module is maintained; the working of the second sawtooth rising circuit of the second inverse variable sawtooth module is maintained; the second sawtooth falling circuit of the second inverse variable sawtooth module is started by the controller, the energy is transferred back to the direct current main power supply, and the second sawtooth capacitor is discharged; the working of the sawtooth output control module is maintained; operation 4: the synchronous pulse second driving pulse and the fifth driving pulse arrive, the first sawtooth rising circuit, the first sawtooth falling circuit and the sawtooth output control module start working at the same time, and energy transfer is performed, and the remaining parallel working states are maintained; the first sawtooth rising circuit of the first inverse variable sawtooth module is started by the controller, the energy is transferred to the first sawtooth capacitor, and the rising edge of the first inverse variable power sawtooth wave signal is formed; when the energy of the first sawtooth rising circuit is completely transferred to the first sawtooth capacitor, operation 5 is entered; the working of the first sawtooth falling circuit of the first inverse variable sawtooth module is maintained; the working of the second sawtooth rising circuit of the second inverse variable sawtooth module is maintained; the second sawtooth rising circuit of the second inverse variable sawtooth module works under the control of the controller set synchronous pulse second driving pulse, and the energy of the second sawtooth capacitor starts to be transferred and stored to the second sawtooth falling circuit at the pulse rising edge, the controller outputs the pulse falling edge to end the energy transfer according to the preset energy of the system; the sawtooth output control module works under the control of the controller set synchronous pulse fifth driving pulse, and the inverse variable power sawtooth source is outputted, when the output inverse variable power sawtooth source reaches the set width, the controller starts to stop the output control; operation 5: the synchronous pulse third driving pulse and the fifth driving pulse arrive, the first sawtooth falling circuit, the second sawtooth rising circuit and the sawtooth output control module start working at the same time, and energy transfer is performed, and the remaining parallel working states are maintained; the working of the first sawtooth rising circuit of the first inverse variable sawtooth module is maintained; the first sawtooth falling circuit of the first inverse variable sawtooth module works under the control of the controller set synchronous pulse third driving pulse, and the energy of the first sawtooth capacitor starts to be transferred and stored to the first sawtooth falling circuit at the pulse rising edge, when the energy of the first sawtooth capacitor is completely transferred to the first sawtooth falling circuit, operation 6 is entered;The second sawtooth rising circuit of the second inverter sawtooth module is started by the controller, energy is transferred to the second sawtooth capacitor, and a rising edge of the second inverter power sawtooth wave signal is formed; the working of the second sawtooth falling circuit of the second inverter sawtooth module is maintained; the sawtooth output control module works under the control of the controller setting the fifth driving pulse of the synchronization pulse, and outputs the inverter power sawtooth source; when the inverter power sawtooth source reaches the set width, the controller starts to stop the output control; operation 6: the fourth driving pulse of the synchronization pulse arrives, the first sawtooth falling circuit and the second sawtooth rising circuit start working respectively, and energy transfer is performed; the working of the first sawtooth rising circuit of the first inverter sawtooth module is maintained; the first sawtooth falling circuit of the first inverter sawtooth module is started by the controller, energy is transferred back to the direct current main power supply, the first sawtooth capacitor is discharged, and the operation 2 is returned; the second sawtooth rising circuit of the second inverter sawtooth module works under the control of the controller setting the fourth driving pulse of the synchronization pulse, and the energy of the direct current main power supply at the rising edge of the pulse starts to be transferred and stored to the second sawtooth rising circuit; the controller outputs the falling edge of the pulse to end the energy transfer according to the preset energy of the system; the working of the second sawtooth falling circuit of the second inverter sawtooth module is maintained; and the working of the sawtooth output control module is maintained.

[0062] Specifically, the control method for the inverter power sawtooth source device specifically includes the following operations:

[0063] Operation 1: the direct current main power supply Ep and the auxiliary power supply Ea are turned on, and operation 2 is entered;

[0064] Operation 2: the controller Kp generates five synchronization pulses, i.e., a first driving pulse, a second driving pulse, a third driving pulse, a fourth driving pulse and a fifth driving pulse, which are periodically distributed at appropriate time intervals, and operation 3 is entered;

[0065] Operation 3: the first driving pulse of the synchronization pulse arrives, the first sawtooth rising circuit Sr1 and the second sawtooth falling circuit Sd2 start working respectively, and energy transfer is performed, and the remaining parallel working states are maintained;

[0066] The first sawtooth rising circuit Sr1 of the first inverter sawtooth module M1 works under the control of the controller Kp setting the first driving pulse of the synchronization pulse, the energy of the direct current main power supply Ep at the rising edge of the pulse starts to be transferred and stored to the first sawtooth rising circuit Sr1, the controller outputs the falling edge of the pulse to end the energy transfer according to the preset energy of the system, and operation 4 is entered;

[0067] The working of the first sawtooth falling circuit Sd1 of the first inverter sawtooth module M1 is maintained;

[0068] The working of the second sawtooth rising circuit Sr2 of the second inverter sawtooth module M2 is maintained;

[0069] The second sawtooth falling circuit Sd2 of the second inverter sawtooth module M2 is started by the controller to transfer energy back to the DC main power Ep, and the second sawtooth capacitor Vc2 is discharged;

[0070] The operation of the sawtooth output control module Ks is maintained;

[0071] Operation 4: The second driving pulse and the fifth driving pulse arrive synchronously, the first sawtooth rising circuit Sr1, the second sawtooth falling circuit Sd2, and the sawtooth output control module Ks start working simultaneously, energy transfer is performed, and the remaining parallel working states are maintained;

[0072] The first sawtooth rising circuit Sr1 of the first inverter sawtooth module M1 is started by the controller Kp to transfer energy to the first sawtooth capacitor Vc1, forming a rising edge of the first inverter power sawtooth wave signal; when the first sawtooth rising circuit Sr1 has completely transferred energy to the first sawtooth capacitor Vc1, operation 5 is entered;

[0073] The operation of the first sawtooth falling circuit Sd1 of the first inverter sawtooth module M1 is maintained;

[0074] The operation of the second sawtooth rising circuit Sr2 of the second inverter sawtooth module M2 is maintained;

[0075] The second sawtooth rising circuit Sd2 of the second inverter sawtooth module M2 works under the control of the controller Kp set by the second driving pulse of the synchronization pulse, and the energy of the second sawtooth capacitor Vc2 starts to be transferred and stored to the second sawtooth falling circuit Sd2 at the rising edge of the pulse; the controller outputs a falling edge to end the energy transfer according to the preset energy of the system;

[0076] The sawtooth output control module Ks works under the control of the controller set by the fifth driving pulse of the synchronization pulse, and outputs an inverter power sawtooth source; when the output inverter power sawtooth source reaches the set width, the controller Kp starts to stop outputting control;

[0077] Operation 5: The third driving pulse and the fifth driving pulse arrive synchronously, the first sawtooth falling circuit Sd1, the second sawtooth rising circuit Sr2, and the sawtooth output control module Ks start working simultaneously, energy transfer is performed, and the remaining parallel working states are maintained;

[0078] The operation of the first sawtooth rising circuit Sr1 of the first inverter sawtooth module M1 is maintained;

[0079] The first sawtooth falling circuit Sd1 of the first inverter sawtooth module M1 works under the control of the controller set by the third driving pulse of the synchronization pulse, and the energy of the first sawtooth capacitor Vc1 starts to be transferred and stored to the first sawtooth falling circuit Sd1 at the rising edge of the pulse; when the first sawtooth capacitor Vc1 has completely transferred energy to the first sawtooth falling circuit Sd1, operation 6 is entered;

[0080] The second sawtooth rising circuit Sr2 of the second inverter sawtooth module M2 is started by the controller Kp, and energy is transferred to the second sawtooth capacitor Vc2 to form a rising edge of the second inverter power sawtooth wave signal;

[0081] The working of the second sawtooth falling circuit Sd2 of the second inverter sawtooth module M2 is maintained;

[0082] The sawtooth output control module Ks works under the control of the controller setting the fifth driving pulse of the synchronization pulse, and outputs the inverter power sawtooth source. When the output inverter power sawtooth source reaches the set width, the controller Kp starts the stop output control.

[0083] Operation 6: The fourth driving pulse of the synchronization pulse arrives, and the first sawtooth falling circuit Sd1 and the second sawtooth rising circuit Sr2 start working respectively, and energy transfer is performed, and the remaining parallel working states are maintained.

[0084] The working of the first sawtooth rising circuit Sr1 of the first inverter sawtooth module M1 is maintained;

[0085] The first sawtooth falling circuit Sd1 of the first inverter sawtooth module M1 is started by the controller Kp, and energy is transferred back to the direct-current main power supply Ep, and the first sawtooth capacitor Vc1 is discharged, and the operation 2 is returned.

[0086] The second sawtooth rising circuit Sr2 of the second inverter sawtooth module M2 works under the control of the controller setting the fourth driving pulse of the synchronization pulse, and the energy of the direct-current main power supply Ep at the rising edge of the pulse starts to be transferred and stored to the second sawtooth rising circuit Sr2. The controller outputs the falling edge of the pulse to end the energy transfer according to the preset energy of the system.

[0087] The working of the second sawtooth falling circuit Sd2 of the second inverter sawtooth module M2 is maintained;

[0088] The working of the sawtooth output control module Ks is maintained.

[0089] Thus, the inverter power sawtooth source device and the control method of the embodiment of the application realize the inverter power sawtooth output through the staggered parallel connection of the direct-current main power supply, two inverter sawtooth modules with the same function, a sawtooth output control module and a controller. The inverter sawtooth module is composed of a sawtooth rising circuit, a sawtooth falling circuit and a sawtooth capacitor. The sawtooth rising circuit and the sawtooth falling circuit can be a boost type or a buck type inverter circuit, and can control the charging inductance to realize the charging and discharging of the sawtooth capacitor. The sawtooth output control module is composed of a power tube, and under the control of the controller, on the one hand, the staggered output of the double sawtooth inverter modules can be realized, and on the other hand, the amplitude and the duty cycle of the inverter power sawtooth source can be adjusted by controlling the conduction time of the power tube.

[0090] Similarly, based on the control method of the inverter power sawtooth source device above, the application also provides a control device of the inverter power sawtooth source device, the control device comprising a processor and a memory, the memory storing at least one instruction, the instruction being loaded and executed by the processor to realize the operations performed by the control method of the inverter power sawtooth source device above.

[0091] Similarly, based on the inverter power sawtooth source device above, the application also provides an inverter unit, comprising the inverter power sawtooth source device above.

[0092] Similarly, based on the inverter power sawtooth source device above, the application also provides an inverter, comprising the inverter unit above.

[0093] It should be noted that, in this document, the terms "comprising", "containing", or any other variant thereof are intended to cover non-exclusive inclusions, so that a process, method, article, or device that includes a list of elements not only includes those elements, but also includes other elements not explicitly listed, or inherent to such a process, method, article, or device. Without more limitations, the element defined by the statement "comprising a" does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0094] In several embodiments provided by the application, it should be understood that the disclosed devices and methods can be implemented in other ways. The device embodiments described above are only illustrative, for example, the division of the units is only a logical functional division, and actual implementation can have another division mode, such as: multiple units or components can be combined, or can be integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the various components shown or discussed can be through some interface, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0095] The units described above as separate components can or can not be physically separated, and the components shown as units can or can not be physical units; they can be located in one place or distributed on multiple network units; some or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0096] In addition, each functional unit in each embodiment of the application can be integrated into one processing unit, or each unit can be a separate unit, or two or more units can be integrated into one unit; the integrated unit can be realized in the form of hardware or hardware plus software functional unit.

[0097] Those skilled in the art can understand that all or part of the operations of the above-mentioned method embodiments can be completed by program instruction related hardware, the above-mentioned program can be stored in a computer readable storage medium, and the program executes the operations including the above-mentioned method embodiments when executed; and the above-mentioned storage medium includes a mobile storage device, a read only memory (ROM), a magnetic disc or an optical disc and various storage medium capable of storing program codes.

[0098] Alternatively, the above-mentioned integrated unit of the present application can be stored in a computer readable storage medium if it is realized in the form of a software function module and sold or used as an independent product. Based on such understanding, the technical solutions of the embodiments of the present application can be embodied in the form of a software product, and the computer software product is stored in a storage medium, includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the methods described in the embodiments of the present application. The above-mentioned storage medium includes a mobile storage device, a ROM, a magnetic disc or an optical disc and various storage medium capable of storing program codes.

[0099] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. An inverter power saw tooth source apparatus, characterized by, The device comprises an auxiliary power supply, a controller, a first inverter sawtooth module, a second inverter sawtooth module, a direct current main power supply, a sawtooth output control module and a load, the first inverter sawtooth module comprises a first sawtooth rising circuit, a first sawtooth capacitor and a first sawtooth falling circuit, the second inverter sawtooth module comprises a second sawtooth rising circuit, a second sawtooth capacitor and a second sawtooth falling circuit; The auxiliary power supply is connected with the controller and is used to power the controller; The output end of the controller is connected with the input end of the first sawtooth rising circuit, the input end of the first sawtooth falling circuit, the input end of the second sawtooth rising circuit and the input end of the second sawtooth falling circuit respectively and is used to output a first driving pulse to the first sawtooth rising circuit, a second driving pulse to the second sawtooth falling circuit, a third driving pulse to the first sawtooth falling circuit and a fourth driving pulse to the second sawtooth rising circuit; the output end of the controller is also connected with the sawtooth output control module and is also used to output a fifth driving pulse to the sawtooth output control module simultaneously in the case of outputting the second driving pulse to the second sawtooth falling circuit and is used to output a fifth driving pulse to the sawtooth output control module in the case of outputting the third driving pulse to the first sawtooth falling circuit; wherein the first driving pulse, the second driving pulse, the third driving pulse, the fourth driving pulse and the fifth driving pulse are synchronous pulses; the first driving pulse, the second driving pulse, the third driving pulse, the fourth driving pulse and the fifth driving pulse are synchronous pulses generated by the controller periodically at a set time interval; The input end of the first sawtooth rising circuit is connected with the direct current main power supply and the output end of the controller, and the output end of the first sawtooth rising circuit is connected with the first sawtooth capacitor; The input end of the first sawtooth falling circuit is connected with the output end of the controller and the first sawtooth capacitor, and the output end of the first sawtooth falling circuit is connected with the direct current main power supply; One end of the first sawtooth capacitor is connected with the output end of the first sawtooth rising circuit, the input end of the first sawtooth falling circuit and the sawtooth output control module, and the other end of the first sawtooth capacitor is grounded; The input end of the second sawtooth rising circuit is connected with the direct current main power supply and the controller, and the output end of the second sawtooth rising circuit is connected with the second sawtooth capacitor; The input end of the second sawtooth falling circuit is connected with the controller and the second sawtooth capacitor, and the output end of the second sawtooth falling circuit is connected with the direct current main power supply; One end of the second sawtooth capacitor is connected with the output end of the second sawtooth rising circuit, the input end of the second sawtooth falling circuit and the sawtooth output control module, and the other end of the second sawtooth capacitor is grounded. One end of the direct current main power source is connected with the input end of the first sawtooth rising circuit, the output end of the first sawtooth falling circuit, the input end of the second sawtooth rising circuit and the output end of the second sawtooth falling circuit respectively, and the other end of the direct current main power source is grounded, for providing energy for the first sawtooth rising circuit and the second sawtooth rising circuit; The input end of the sawtooth output control module is connected with the first sawtooth capacitor and the second sawtooth capacitor, and the output end of the sawtooth output control module is connected with the load, for outputting the inverter power sawtooth source; One end of the load is connected with the output end of the sawtooth output control module, and the other end of the load is grounded.

2. The apparatus of claim 1, wherein, The first driving pulse and the fourth driving pulse are different by 180°, and the second driving pulse and the third driving pulse are different by 180°.

3. The apparatus of claim 1, wherein, The first sawtooth rising circuit, the first sawtooth falling circuit, the second sawtooth rising circuit and the second sawtooth falling circuit each comprise two power tubes, one inductor and two diodes.

4. The apparatus of claim 1, wherein, The sawtooth output control module comprises a power tube.

5. The apparatus of claim 1, wherein, The controller comprises a field programmable gate array chip.

6. A control method of an inverter power saw tooth source apparatus, characterized by, The inverter power sawtooth source device based on any one of claims 1-5 comprises a control method, which comprises the following steps: Operation 1: the direct current main power source and the auxiliary power source are turned on, and operation 2 is entered; Operation 2: the controller generates periodic five-way synchronous pulses, i.e. the first driving pulse, the second driving pulse, the third driving pulse, the fourth driving pulse and the fifth driving pulse, which are distributed at appropriate time intervals, and operation 3 is entered; Operation 3: the first driving pulse arrives, and the first sawtooth rising circuit and the second sawtooth falling circuit start working at the same time, and energy transfer is performed; The first sawtooth rising circuit of the first inverter sawtooth module works under the control of the first driving pulse of the controller, and the energy of the direct current main power source starts to be transferred and stored to the first sawtooth rising circuit at the rising edge of the pulse, and the controller outputs the falling edge of the pulse to end the energy transfer according to the preset energy of the system, and operation 4 is entered; The working of the first sawtooth falling circuit of the first inverter sawtooth module is maintained; The working of the second sawtooth rising circuit of the second inverter sawtooth module is maintained; The second sawtooth falling circuit of the second inverter sawtooth module is started by the controller, and the energy is transferred back to the direct current main power source, and the second sawtooth capacitor is discharged; The working of the sawtooth output control module is maintained; Operation 4: the second driving pulse and the fifth driving pulse arrive, and the first sawtooth rising circuit, the first sawtooth falling circuit and the sawtooth output control module start working at the same time, and energy transfer is performed, and the remaining parallel working states are maintained; The first sawtooth rising circuit of the first inverter sawtooth module is started by the controller, and the energy is transferred to the first sawtooth capacitor, and the rising edge of the first inverter power sawtooth wave signal is formed; when the energy of the first sawtooth rising circuit is completely transferred to the first sawtooth capacitor, operation 5 is entered; The working of the first sawtooth falling circuit of the first inverter sawtooth module is maintained; The working of the second sawtooth rising circuit of the second inverter sawtooth module is maintained; The working of the second sawtooth falling circuit of the second inverter sawtooth module is maintained; The second sawtooth rising circuit of the second inverter sawtooth module works under the control of the controller setting the second driving pulse of the synchronization pulse, and the energy of the second sawtooth capacitor starts to be transferred and stored to the second sawtooth falling circuit at the pulse rising edge; the controller outputs the pulse falling edge to end the energy transfer according to the preset energy of the system; The sawtooth output control module works under the control of the controller setting the fifth driving pulse of the synchronization pulse, and outputs the inverter power sawtooth source; when the output inverter power sawtooth source reaches the set width, the controller starts the stop output control; Operation 5: The third driving pulse and the fifth driving pulse of the synchronization pulse come, the first sawtooth falling circuit, the second sawtooth rising circuit and the sawtooth output control module start to work respectively, and the energy transfer is performed, and the remaining parallel working states are kept; The working of the first sawtooth rising circuit of the first inverter sawtooth module is kept; The first sawtooth falling circuit of the first inverter sawtooth module works under the control of the controller setting the third driving pulse of the synchronization pulse, and the energy of the first sawtooth capacitor starts to be transferred and stored to the first sawtooth falling circuit at the pulse rising edge; when the energy of the first sawtooth capacitor is completely transferred to the first sawtooth falling circuit, operation 6 is entered; The second sawtooth rising circuit of the second inverter sawtooth module is started by the controller, and the energy is transferred to the second sawtooth capacitor to form the rising edge of the second inverter power sawtooth wave signal; The working of the second sawtooth falling circuit of the second inverter sawtooth module is kept; The sawtooth output control module works under the control of the controller setting the fifth driving pulse of the synchronization pulse, and outputs the inverter power sawtooth source; when the output inverter power sawtooth source reaches the set width, the controller starts the stop output control; Operation 6: The fourth driving pulse of the synchronization pulse comes, and the first sawtooth falling circuit and the second sawtooth rising circuit start to work respectively, and the energy transfer is performed; The working of the first sawtooth rising circuit of the first inverter sawtooth module is kept; The first sawtooth falling circuit of the first inverter sawtooth module is started by the controller, and the energy is transferred back to the direct-current main power supply, and the first sawtooth capacitor is discharged, and operation 2 is returned to; The second sawtooth rising circuit of the second inverter sawtooth module works under the control of the controller setting the fourth driving pulse of the synchronization pulse, and the energy of the direct-current main power supply starts to be transferred and stored to the second sawtooth rising circuit at the pulse rising edge; the controller outputs the pulse falling edge to end the energy transfer according to the preset energy of the system; The working of the second sawtooth falling circuit of the second inverter sawtooth module is kept; The working of the sawtooth output control module is kept.

7. A control device for an inverter power saw tooth source device, characterized by, The control device comprises a processor and a memory, and at least one instruction is stored in the memory, the instruction is loaded and executed by the processor to realize the operation performed by the control method in claim 6.

8. An inverter unit characterized by comprising: The inverter unit comprises the inverter power sawtooth source device in any one of claims 1-5.

9. An inverter, characterized by comprising: The inverter comprises the inverter unit in claim 8.

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