High-power-density amplifier and system thereof

Abstract

The invention relates to a high-power-density amplifier and a system thereof. The amplifier comprises a control module, a first power module and a second power module, the control module is electrically connected with the signal generation module, the first power module and the second power module are both electrically connected with the control module, the control module outputs a first control signal based on a signal output by the signal generation module, and the control module outputs a second control signal based on the signal output by the signal generation module; the first control signal is used for controlling the first power module and the second power module to output first voltage; the second control signal is used for controlling the first power module and the second power module to output a second voltage. According to the amplifier, the amplification function of the amplifier is realized by adopting one control module, the volume space occupied by a plurality of control modules can be released, the released volume space can be used for integrating more power units to improve the power density of the amplifier, and the integration level of the amplifier is also improved.

Description

Technical Field

[0001] The present disclosure relates to the technical field of amplifiers, and in particular to a high power density amplifier and a system thereof. Background Art

[0002] A power amplifier is a device that can keep the waveform of a signal unchanged, amplify the amplitude of the signal proportionally, and achieve high power output. With the development of various electrical industries, the power levels of the electrical environments and electrical equipment used are getting higher and higher, so a higher power amplifier is needed to support their simulation and control.

[0003] In the prior art, multiple amplifiers are usually connected in parallel to increase the power of the entire amplifier system. However, since multiple amplifiers are connected in parallel, the entire amplifier system is not stable enough, and the volume and weight of the entire amplifier system will increase, thereby increasing the space cost of the amplifier system. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a high power density amplifier and a system thereof.

[0005] The present disclosure provides an amplifier with high power density, comprising: a control module, a first power module and a second power module; the input end of the first power module and the input end of the second power module are both electrically connected to the power module, the output end of the first power module and the output end of the second power module are both electrically connected to the energy-demanding device, and the control module is electrically connected to the signal generating module; the first control end of the first power module is electrically connected to the first output end of the control module, and the second control end of the first power module is electrically connected to the second output end of the control module; the first control end of the second power module is electrically connected to the second output end of the control module, and the second control end of the second power module is electrically connected to the first output end of the control module; wherein the first output end of the control module outputs a first control signal based on the signal output by the signal generating module; the second output end of the control module outputs a second control signal based on the signal output by the signal generating module; the first control signal is used to control the first power module and the second power module, and output a first voltage to the energy-demanding device based on the output voltage of the power module; the second control signal is used to control the first power module and the second power module, and output a second voltage to the energy-demanding device based on the output voltage of the power module.

[0006] Optionally, the first power module includes a first upper switch unit and a first lower switch unit; the second power module includes a second upper switch unit and a second lower switch unit; the first upper switch unit is electrically connected to the first lower switch unit in parallel, and the second upper switch unit is electrically connected to the second lower switch unit in parallel; the input end of the first upper switch unit, the input end of the first lower switch unit, the input end of the second upper switch unit, and the input end of the second lower switch unit are all electrically connected to the power module; the output end of the first upper switch unit and the output end of the second upper switch unit are both electrically connected to the energy-demanding device, and the output end of the first lower switch unit and the output end of the second lower switch unit are electrically connected to the energy-demanding device. The output ends of the elements are electrically connected to the energy-demanding equipment; the control end of the first upper switch unit and the control end of the second lower switch unit are electrically connected to the first output end of the control module, and the control end of the second upper switch unit and the control end of the first lower switch unit are electrically connected to the second output end of the control module; wherein, the first upper switch unit and the second lower switch unit output a first voltage to the energy-demanding equipment based on the first control signal output by the control module and the output voltage of the power module; the second upper switch unit and the first lower switch unit output a second voltage to the energy-demanding equipment based on the second control signal output by the control module and the output voltage of the power module.

[0007] Optionally, the switch unit includes at least one switch element group; the switch element group includes a driver and at least two switch elements; the control ends of the at least two switch elements are electrically connected to the output ends of the driver, the first ends of the at least two switch elements are electrically connected to the power supply module, the second ends of the at least two switch elements are electrically connected to the energy-demanding equipment, and the control end of the driver is electrically connected to the control module; wherein the driver is used to control the conduction and disconnection of the at least two switch elements according to the control signal output by the control module.

[0008] Optionally, the switching element is a MOS tube; the gate of the MOS tube is electrically connected to the output end of the driver, the first pole of the MOS tube is electrically connected to the power module, and the second pole of the MOS tube is electrically connected to the energy-demanding device.

[0009] Optionally, it also includes a filtering module; the first input end of the filtering module is electrically connected to the output end of the first upper switch unit and the output end of the second upper switch unit, the second input end of the filtering module is electrically connected to the output end of the first lower switch unit and the output end of the second lower switch unit, and the output end of the filtering module is electrically connected to the energy-demanding device.

[0010] Optionally, the filtering module includes a first inductor, a second inductor and a first capacitor; the first end of the first inductor is electrically connected to the output end of the first upper switch unit and the output end of the second upper switch unit, and the second end of the first inductor is electrically connected to the first end of the first capacitor; the first end of the second inductor is electrically connected to the output end of the first lower switch unit and the output end of the second lower switch unit, and the second end of the second inductor is electrically connected to the second end of the first capacitor; the first end of the first capacitor is electrically connected to the first input end of the energy-demanding device, and the second end of the first capacitor is electrically connected to the second input end of the energy-demanding device.

[0011] Optionally, it also includes a voltage stabilizing module; the input end of the voltage stabilizing module is electrically connected to the power module, the first output end of the voltage stabilizing module is electrically connected to the input end of the first power module, and the second output end of the voltage stabilizing module is electrically connected to the input end of the second power module.

[0012] Optionally, the voltage stabilizing module includes a first resistor, a second resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor and a seventh capacitor; the first end of the first resistor is electrically connected to the first output end of the power supply module, the second end of the first resistor is electrically connected to the second end of the second resistor, and the first end of the second resistor is electrically connected to the second output end of the power supply module; the first end of the first resistor is also electrically connected to the input end of the first power module, and the first end of the second resistor is also electrically connected to the input end of the second power module; the first resistor is electrically connected in parallel to the second capacitor, the third capacitor and the fourth capacitor, and the second resistor is electrically connected in parallel to the fifth capacitor, the sixth capacitor and the seventh capacitor.

[0013] The present disclosure also provides a high-power density amplifier system, including a power supply module, an energy-demanding device, a power supply grid, a signal generating module and any of the above high-power density amplifiers; the power supply module is electrically connected to the power supply grid, the power supply module is electrically connected to a first input terminal of the amplifier and a second input terminal of the amplifier, the first output terminal of the amplifier and the second output terminal of the amplifier are electrically connected to the energy-demanding device, and the control terminal of the amplifier is also electrically connected to the signal generating module; wherein the power supply module converts the three-phase AC voltage provided by the power supply grid into a DC voltage, and the amplifier converts the DC voltage output by the power supply module into a first voltage and a second voltage based on a signal output by the signal generating module.

[0014] Optionally, the signal generating module includes a simulation unit; the simulation unit is electrically connected to the first control end of the amplifier and the second control end of the amplifier; the simulation unit outputs a simulation signal to the first control end of the amplifier and the second control end of the amplifier, and the amplifier converts the DC voltage received from the power supply module into a first voltage and a second voltage based on the simulation signal.

[0015] The present disclosure provides a high power density amplifier and its system. The present disclosure is provided with a first power module and a second power module with high power density in the amplifier, and the control module is used to uniformly control them. The control module outputs a first control signal and a second control signal according to the signal output by the signal generating module, and the first power module and the second power module output a first voltage to the energy-demanding device according to the first control signal, and output a second voltage to the energy-demanding device according to the second control signal, thereby realizing the output of the signal amplified by the signal output by the signal generating module to the energy-demanding device. Therefore, the present disclosure can realize the amplification function of the amplifier by only using one control module, and there is no need to set a control module for each power module for separate control, thereby releasing the volume space occupied by multiple control modules, and the released volume space can be used to integrate and set more power units to improve the power density of the amplifier, thereby realizing the improvement of the integration of the amplifier while also increasing the power density of the amplifier. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments of the present invention are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A schematic diagram of the structure of a high power density amplifier provided in an embodiment of the present disclosure.

[0018] Figure 2 A schematic diagram of the structure of a preferred high power density amplifier provided in an embodiment of the present disclosure.

[0019] Figure 3 A schematic diagram of the structure of a high power density amplifier system provided in an embodiment of the present disclosure.

[0020] Figure 4 Schematic diagram of a signal generated by a signal generation module provided in an embodiment of the present disclosure DETAILED DESCRIPTION

[0021] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present invention. However, it is obvious to those skilled in the art that the present invention can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present invention by illustrating examples of the present invention.

[0022] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0023] Figure 1 A schematic diagram of a high power density amplifier provided by an embodiment of the present disclosure is shown in FIG. Figure 1 As shown, the amplifier includes: a control module 100, a first power module 200 and a second power module 300; the input end 201 of the first power module 200 and the input end 301 of the second power module 300 are both electrically connected to the power module 400, the output end 202 of the first power module 200 and the output end 302 of the second power module 300 are both electrically connected to the energy-demanding device 500, and the control module 100 is electrically connected to the signal generating module 600; the first control end 203 of the first power module 200 is electrically connected to the first output end 101 of the control module 100, the second control end 204 of the first power module 200 is electrically connected to the second output end 102 of the control module 100; the first control end 303 of the second power module 300 is electrically connected to the The second output terminal 102 is electrically connected, and the second control terminal 304 of the second power module 300 is electrically connected to the first output terminal 101 of the control module 100; wherein, the first output terminal 101 of the control module 100 outputs a first control signal based on the signal output by the signal generating module 600; the second output terminal 102 of the control module 100 outputs a second control signal based on the signal output by the signal generating module 600; the first control signal is used to control the first power module 200 and the second power module 300, and output a first voltage to the energy-demanding device 500 based on the output voltage of the power supply module 400; the second control signal is used to control the first power module 200 and the second power module 300, and output a second voltage to the energy-demanding device 500 based on the output voltage of the power supply module 400.

[0024] Specifically, when the first control terminal 203 of the first power module 200 and the second control terminal 304 of the second power module 300 receive the first control signal from the first output terminal 101 of the control module 100, the first power module 200 and the second power module 300 turn on some of the internal switch tubes and turn off some of the internal switch tubes, so that the first power module 200 and the second power module 300 output the first voltage to the energy-demanding device 500 based on the output voltage of the power module 400. When the second control terminal 204 of the first power module 200 and the first control terminal 303 of the second power module 300 receive the second control signal from the second output terminal 102 of the control module 100, the first power module 200 and the second power module 300 turn on some of the internal switch tubes and turn off some of the internal switch tubes, so that the first power module 200 and the second power module 300 output the second voltage to the energy-demanding device 500 based on the output voltage of the power module 400. The control module 100 outputs a first control signal and a second control signal respectively through a first output terminal 101 of the control module 100 and a second output terminal 102 of the control module 100 according to the signal output by the signal generating module 600, so that the waveforms of the first voltage and the second voltage output by the amplifier are consistent with the signal output by the signal generating module 600, thereby amplifying the output signal of the signal generating module 600.

[0025] The present disclosure sets a first power module 200 and a second power module 300 with high power density in the amplifier, and controls them uniformly through the control module 100. The control module 100 outputs a first control signal and a second control signal according to the signal output by the signal generating module 600, and the first power module 200 and the second power module 300 output a first voltage to the energy-demanding device 500 according to the first control signal, and output a second voltage to the energy-demanding device 500 according to the second control signal, thereby realizing outputting a signal amplified from the signal output by the signal generating module 600 to the energy-demanding device 500. Therefore, the present disclosure can realize the amplification function of the amplifier by only using one control module 100, and there is no need to set a control module for each power module for separate control, thereby releasing the volume space occupied by multiple control modules, and the released volume space can be used to integrate and set more power units to improve the power density of the amplifier, thereby realizing the improvement of the integration of the amplifier while also increasing the power density of the amplifier.

[0026] In some embodiments, the first power module includes a first upper switch unit and a first lower switch unit; the second power module includes a second upper switch unit and a second lower switch unit.

[0027] The first upper switch unit is electrically connected in parallel with the first lower switch unit, and the second upper switch unit is electrically connected in parallel with the second lower switch unit; the input end of the first upper switch unit, the input end of the first lower switch unit, the input end of the second upper switch unit and the input end of the second lower switch unit are all electrically connected to the power module; the output end of the first upper switch unit and the output end of the second upper switch unit are both electrically connected to the energy-demanding equipment, and the output end of the first lower switch unit and the output end of the second lower switch unit are both electrically connected to the energy-demanding equipment; the control end of the first upper switch unit and the control end of the second lower switch unit are both electrically connected to the first output end of the control module, and the control end of the second upper switch unit and the control end of the first lower switch unit are both electrically connected to the second output end of the control module.

[0028] The first upper switch unit and the second lower switch unit output a first voltage to the energy-demanding device based on the first control signal output by the control module and the output voltage of the power module; the second upper switch unit and the first lower switch unit output a second voltage to the energy-demanding device based on the second control signal output by the control module and the output voltage of the power module.

[0029] Specifically, when the control end of the first upper switch unit and the control end of the second lower switch unit receive the first control signal from the first output end of the control module, the first upper switch unit and the second lower switch unit are turned on, and the second upper switch unit and the first lower switch unit are turned off, so that the first upper switch unit and the second lower switch unit output the first voltage to the energy-demanding device based on the output voltage of the power module. When the control end of the second upper switch unit and the control end of the first lower switch unit receive the second control signal from the second output end of the control module, the second upper switch unit and the first lower switch unit are turned on, and the first upper switch unit and the second lower switch unit are turned off, so that the second upper switch unit and the first lower switch unit output the second voltage to the energy-demanding device based on the output voltage of the power module. The control module outputs the first control signal and the second control signal through the first output end and the second output end of the control module respectively according to the signal output by the signal generating module, so that the waveforms of the first voltage and the second voltage output by the amplifier are consistent with the signal output by the signal generating module, thereby realizing the amplification of the signal output by the signal generating module.

[0030] The present disclosure uses only one control module to control the on and off of the first upper switch unit, the second upper switch unit, the first lower switch unit, and the second lower switch unit, so as to convert the output voltage provided by the power supply module into a voltage signal consistent with the output signal fluctuation of the signal generating module, thereby realizing the amplification function of the amplifier, and there is no need to set a control module for each switch unit for separate control, thereby releasing the volume space occupied by multiple control modules, and the released volume space can be used to integrate and set more power units to improve the power density of the amplifier, thereby realizing the improvement of the integration of the amplifier while also increasing the power density of the amplifier. In addition, the amplification function of the amplifier is realized by using a switch-type control method, which can effectively reduce the switching loss, avoid the heating problem of the switch unit, and effectively improve the power of the amplifier.

[0031] In some embodiments, the switch unit includes at least one switch element group; the switch element group includes a driver and at least two switch elements; the control ends of at least two switch elements are electrically connected to the output ends of the driver, the first ends of at least two switch elements are electrically connected to the power module, the second ends of at least two switch elements are electrically connected to the energy-demanding device, and the control end of the driver is electrically connected to the control module; wherein the driver is used to control the conduction and disconnection of at least two switch elements according to the control signal output by the control module.

[0032] Exemplarily, the switch unit includes a first switch element group and a second switch element group, the control end of the first switch element group and the control end of the second switch element group are electrically connected to the control module, the first end of the first switch element group and the first end of the second switch element group are electrically connected to the power supply module, and the second end of the first switch element group and the second end of the second switch element group are electrically connected to the energy-demanding device.

[0033] The switch element group includes a driver, a first switch element, a second switch element and a third switch element. The first output end of the driver is electrically connected to the control end of the first switch element, the second output end of the driver is electrically connected to the control end of the second switch element, the third output end of the driver is electrically connected to the control end of the third switch element, the first end of the first switch element, the first end of the second switch element and the first end of the third switch element are all electrically connected to the power module, and the second end of the first switch element, the second end of the second switch element and the second end of the third switch element are all electrically connected to the energy-demanding device. When the control end of the driver receives a control signal from the control module, the driver outputs a driving signal to the control end of the first switch element, the control end of the second switch element and the control end of the third switch element, so that the first switch element, the second switch element and the third switch element are turned on, thereby realizing the conduction of the switch unit, so that the output voltage output by the power module is output to the energy-demanding device through the switch unit. The present disclosure adopts a plurality of switch elements in parallel to form a switch unit, which increases the integration of the entire power module and effectively improves the power density of the amplifier.

[0034] It should be noted that the switch unit includes a first switch element group and a second switch element group. The switch element group includes a first switch element, a second switch element and a third switch element, which are all examples. The specific switch element group and the number of switch elements are set according to actual conditions and are not specifically limited here.

[0035] In some embodiments, the switch element is a MOS tube; the gate of the MOS tube is electrically connected to the output end of the driver, the first electrode of the MOS tube is electrically connected to the power module, and the second electrode of the MOS tube is electrically connected to the energy-demanding device.

[0036] Exemplarily, the switch element group includes a driver, a first MOS tube, a second MOS tube and a third MOS tube, the first output end of the driver is electrically connected to the gate of the first MOS tube, the second output end of the driver is electrically connected to the gate of the second MOS tube, the third output end of the driver is electrically connected to the gate of the third MOS tube, the first pole of the first MOS tube, the first pole of the second MOS tube and the first pole of the third MOS tube are all electrically connected to the power module, and the second pole of the first MOS tube, the second pole of the second MOS tube and the second pole of the third MOS tube are all electrically connected to the energy-demanding device. When the gate of the driver receives a control signal from the control module, the driver outputs a driving signal to the gate of the first MOS tube, the gate of the second MOS tube and the gate of the third MOS tube, so that the first MOS tube, the second MOS tube and the third MOS tube are turned on, thereby realizing the conduction of the switch unit, so that the output voltage output by the power module is output to the energy-demanding device through the switch unit. The present disclosure adopts a plurality of MOS tubes in parallel to form a switch unit, which increases the integration of the entire power module and effectively improves the power density of the amplifier.

[0037] It should be noted that the switch element group including the first MOS tube, the second MOS tube and the third MOS tube are all examples, and the specific number of MOS tubes is set according to actual conditions and is not specifically limited here.

[0038] In some embodiments, the amplifier also includes a filtering module; the first input end of the filtering module is electrically connected to the output end of the first upper switch unit and the output end of the second upper switch unit, the second input end of the filtering module is electrically connected to the output end of the first lower switch unit and the output end of the second lower switch unit, and the output end of the filtering module is electrically connected to the energy-demanding device.

[0039] Specifically, when the control end of the first upper switch unit and the control end of the second lower switch unit receive the first control signal from the first output end of the control module, the first upper switch unit and the second lower switch unit are turned on, the second upper switch unit and the first lower switch unit are turned off, the output voltage of the power module is converted into a first voltage through the first upper switch unit and the second lower switch unit, the filter module filters the first voltage to filter out the abnormal voltage in the first voltage, and finally outputs the first voltage to the energy-demanding device. When the control end of the first lower switch unit and the control end of the second upper switch unit receive the second control signal from the second output end of the control module, the first lower switch unit and the second upper switch unit are turned on, the second lower switch unit and the first upper switch unit are turned off, the output voltage of the power module is converted into a second voltage through the first lower switch unit and the second upper switch unit, the filter module filters the second voltage to filter out the abnormal voltage in the second voltage, and finally outputs the second voltage to the energy-demanding device, thereby making it possible for the amplified signal finally output to the energy-demanding device to not be affected by the abnormal voltage, so that the energy-demanding device can receive the most accurate voltage signal.

[0040] In some embodiments, the filtering module includes a first inductor, a second inductor and a first capacitor; the first end of the first inductor is electrically connected to the output end of the first upper switch unit and the output end of the second upper switch unit, and the second end of the first inductor is electrically connected to the first end of the first capacitor; the first end of the second inductor is electrically connected to the output end of the first lower switch unit and the output end of the second lower switch unit, and the second end of the second inductor is electrically connected to the second end of the first capacitor; the first end of the first capacitor is electrically connected to the first input end of the energy-demanding device, and the second end of the first capacitor is electrically connected to the second input end of the energy-demanding device.

[0041] Specifically, the cutoff frequency of the LC filter circuit composed of the first inductor and the first capacitor is Where L1 is the inductance of the first inductor, and C is the capacitance of the first capacitor. The cutoff frequency of the LC filter circuit composed of the second inductor and the first capacitor is Wherein L2 is the inductance value of the second inductor, and C is the capacitance value of the first capacitor. According to the output frequency provided by the amplifier required by the energy-demanding device, the values ​​of the first inductor, the second inductor and the capacitor can be adjusted to ensure that the output frequency value meets the requirements of the energy-demanding device.

[0042] In some embodiments, the amplifier also includes a voltage stabilizing module; the input end of the voltage stabilizing module is electrically connected to the power module, the first output end of the voltage stabilizing module is electrically connected to the input end of the first power module, and the second output end of the voltage stabilizing module is electrically connected to the input end of the second power module.

[0043] Specifically, the output voltage of the power supply module is output to the input end of the first power module and the input end of the second power module after the voltage stabilization operation of the voltage stabilizing module, so that when the first power module and the second power module output high power, the DC voltage received by the first power module and the second power module is stable and the fluctuation of the amplifier output waveform is reduced.

[0044] In some embodiments, the voltage stabilizing module includes a first resistor, a second resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor and a seventh capacitor; the first end of the first resistor is electrically connected to the first output end of the power module, the second end of the first resistor is electrically connected to the second end of the second resistor, and the first end of the second resistor is electrically connected to the second output end of the power module; the first end of the first resistor is also electrically connected to the input end of the first power module, and the first end of the second resistor is also electrically connected to the input end of the second power module; the first resistor is electrically connected in parallel with the second capacitor, the third capacitor and the fourth capacitor, and the second resistor is electrically connected in parallel with the fifth capacitor, the sixth capacitor and the seventh capacitor.

[0045] Exemplarily, the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor and the seventh capacitor are all electrolytic capacitors. When the amplifier outputs high power, the output waveform is not a DC waveform and has abnormal fluctuations, which leads to unstable voltage on the DC side of the amplifier. Therefore, it is necessary to set a sufficiently large capacitor on the DC side of the amplifier for voltage stabilization. Electrolytic capacitors are generally used as large-capacitance voltage-stabilizing capacitors because of their excellent capacitance-to-volume ratio. However, the withstand voltage of electrolytic capacitors is usually not high enough, so the total withstand voltage is increased by series connection. The capacitance calculation formula of electrolytic capacitors is:

[0046]

[0047] Where, C0 is the capacitance of the electrolytic capacitor, P out is the output power, V i is the bus voltage, aV iis the allowable ripple value. Since the capacitance and internal resistance of the electrolytic capacitor are not uniform, and the characteristics of the electrolytic capacitor will change over time, before inputting voltage to the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor and the seventh capacitor, a first resistor and a second resistor are connected in series to ensure that each capacitor in series can evenly divide the voltage. Since the resistance of the resistor selected by the first resistor and the second resistor is too large, the voltage dividing performance between the first resistor and the second resistor will be poor. If the resistance of the resistor selected by the first resistor and the second resistor is too small, the current passing through the voltage dividing resistor will be too large and it will be difficult to dissipate heat. Therefore, when selecting the first resistor and the second resistor, it is necessary to consider the current flowing through the resistor, that is, Where R is the resistance of the first resistor and the second resistor, and Ic is the leakage current of each capacitor. Therefore, when selecting the first resistor and the second resistor, it is necessary to select according to the above formula, and select the resistors that meet the above formula as the first resistor and the second resistor. In addition, the present disclosure adopts the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor and the seventh capacitor in parallel, which increases the capacitance while reducing the total equivalent impedance, and can avoid the heating problem of the capacitor. Compared with the solution of using a single large capacitance resistor, the present disclosure adopts multiple groups of small capacitance capacitors in parallel to rationally arrange the internal space.

[0048] It should be noted that the second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor and the seventh capacitor are electrolytic capacitors for example only. The second capacitor, the third capacitor, the fourth capacitor, the fifth capacitor, the sixth capacitor and the seventh capacitor may also be other capacitors that can achieve a voltage stabilization function, which is not specifically limited here.

[0049] Figure 2 A schematic diagram of a preferred high power density amplifier provided in an embodiment of the present disclosure is shown in FIG. Figure 2 As shown, the amplifier includes: a control module 100, a first resistor R1, a second resistor R2, a first inductor L1, a second inductor L2, a first capacitor C1, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first driver 211, a second driver 212, a third driver 213, a fourth driver 214, a fifth driver 311, a sixth driver 312, a seventh driver 313, an eighth driver 314, a first MOS tube group 221, a second MOS tube group 222, a third MOS tube group 223, a fourth MOS tube group 224, a fifth MOS tube group 321, a sixth MOS tube group 322, a seventh MOS tube group 323 and an eighth MOS tube group 324.

[0050] The first output terminal 401 of the power module 400 is electrically connected to the first end of the first resistor R1, the second end of the first resistor R1 is electrically connected to the first end of the second resistor R2, the second end of the second resistor R2 is electrically connected to the second output terminal 402 of the power module 400, the first resistor R1 is also connected in parallel with the second capacitor C2, the third capacitor C3 and the fourth capacitor C4, the second resistor R2 is also connected in parallel with the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7, the second capacitor C2 is connected in series with the fifth capacitor C5, the third capacitor C3 is connected in series with the sixth capacitor C6, and the fourth capacitor C4 is connected in series with the seventh capacitor C7; the first output terminal 401 of the power module 400 is also connected to the input terminal, The input end of the second MOS tube group 222, the input end of the third MOS tube group 223 and the input end of the fourth MOS tube group 224 are electrically connected. The second output end 402 of the power module 400 is also electrically connected to the input end of the fifth MOS tube group 321, the input end of the sixth MOS tube group 322, the input end of the seventh MOS tube group 323 and the input end of the eighth MOS tube group 324. The output end of the first MOS tube group 221, the output end of the second MOS tube group 222, the output end of the fifth MOS tube group 321 and the output end of the sixth MOS tube group 322 are electrically connected to the energy-consuming device 500 and the first end of the first capacitor C1 through the first inductor L1. The third MOS tube group 223 The output end of the fourth MOS tube group 224, the output end of the seventh MOS tube group 323 and the output end of the eighth MOS tube group 324 are electrically connected to the energy-demanding device 500 and the second end of the first capacitor C1 through the second inductor L2; the first driver 211 is electrically connected to the control end of the first MOS tube group 221, the second driver 212 is electrically connected to the control end of the second MOS tube group 222, the third driver 213 is electrically connected to the control end of the third MOS tube group 223, the fourth driver 214 is electrically connected to the control end of the fourth MOS tube group 224, the fifth driver 311 is electrically connected to the control end of the fifth MOS tube group 321, and the sixth driver 312 is electrically connected to the control end of the sixth MOS tube group The control end of the control module 100 is electrically connected to the control end of the first driver 211, the control end of the second driver 212, the control end of the seventh driver 313 and the control end of the eighth driver 314. The control module 100 is also electrically connected to the signal generating module 600.

[0051] Specifically, each MOS tube group is provided with three MOS tubes connected in parallel, the gates of the three MOS tubes are electrically connected to the control end of the MOS tube group, the first electrodes of the three MOS tubes are electrically connected to the input end of the MOS tube group, and the second electrodes of the three MOS tubes are electrically connected to the output end of the MOS tube group.

[0052] The first output terminal 101 of the control module 100 outputs a first control signal based on the received signal output from the signal generating module 600. The second output terminal 102 of the control module 100 outputs a second control signal based on the signal output from the signal generating module 600. The first driver 211, the second driver 212, the seventh driver 313 and the eighth driver 314 control the conduction of the first MOS tube group 221, the second MOS tube group 222, the seventh MOS tube group 323 and the eighth MOS tube group 324 based on the first control signal. The third driver 213, the fourth driver 214, the fifth driver 311 and the sixth driver 312 control the conduction of the third MOS tube group 223, the fourth MOS tube group 224, the fifth MOS tube group 321 and the sixth MOS tube group 322 based on the second control signal.

[0053] When the first driver 211, the second driver 212, the seventh driver 313 and the eighth driver 314 receive the first control signal from the first output terminal 101 of the control module 100, the first MOS tube group 221, the second MOS tube group 222, the seventh MOS tube group 323 and the eighth MOS tube group 324 are turned on, and the third MOS tube group 223, the fourth MOS tube group 224, the fifth MOS tube group 321 and the sixth MOS tube group 322 are turned off. The voltage provided by the power module 400 is output to the turned-on first MOS tube group 221, the second MOS tube group 222, the seventh MOS tube group 323 and the eighth MOS tube group 324 after being stabilized by the capacitor and the resistor, and then filtered by the first inductor L1, the second inductor L2 and the first capacitor C1 to generate the first voltage.

[0054] When the third driver 213, the fourth driver 214, the fifth driver 311 and the sixth driver 312 receive the second control signal from the second output terminal 102 of the control module 100, the first MOS tube group 221, the second MOS tube group 222, the seventh MOS tube group 323 and the eighth MOS tube group 324 are turned off, and the third MOS tube group 223, the fourth MOS tube group 224, the fifth MOS tube group 321 and the sixth MOS tube group 322 are turned on. The voltage provided by the power module 400 is output to the turned-on third MOS tube group 223, the fourth MOS tube group 224, the fifth MOS tube group 321 and the sixth MOS tube group 322 after being stabilized by the capacitor and the resistor, and then filtered by the first inductor L1, the second inductor L2 and the first capacitor C1 to generate the second voltage.

[0055] The control module 100 outputs a first control signal and a second control signal respectively through a first output terminal 101 of the control module 100 and a second output terminal 102 of the control module 100 according to the signal output by the signal generating module 600, so that the waveforms of the first voltage and the second voltage output by the amplifier are consistent with the signal output by the signal generating module 600, thereby amplifying the output signal of the signal generating module 600.

[0056] Figure 3 A schematic diagram of a high power density amplifier system provided by an embodiment of the present disclosure is shown in FIG. Figure 3 As shown, the high power density amplifier system includes a power supply module 400, an energy-demanding device 500, a signal generating module 600, a power supply grid 700 and any high power density amplifier 800 as above; the power supply module 400 is electrically connected to the power supply grid 700, the power supply module 400 is electrically connected to a first input terminal 801 of the amplifier 800 and a second input terminal 802 of the amplifier 800, a first output terminal 803 of the amplifier 800 and a second output terminal 804 of the amplifier 800 are electrically connected to the energy-demanding device 500, and a control terminal 805 of the amplifier 800 is also electrically connected to the signal generating module 600; wherein, the power supply module 400 converts the three-phase AC voltage provided by the power supply grid 700 into a DC voltage, and the amplifier 800 converts the DC voltage output by the power supply module 400 into a first voltage and a second voltage based on the signal output by the signal generating module 600.

[0057] Specifically, the signal generating module 600 generates a first signal and a second signal. Figure 4 A schematic diagram of a signal generated by a signal generation module provided in an embodiment of the present disclosure, such as Figure 4 As shown, the first signal and the second signal are both high-frequency square waves, the phase difference between the first signal and the second signal is 180°, and in order to avoid the bridge arm shoot-through phenomenon, a dead time is left between the first signal and the second signal.

[0058] The amplifier 800 converts the DC voltage output by the power module 400 into a first voltage according to the first signal output by the signal generating module 600, and converts the DC voltage output by the power module 400 into a second voltage according to the second signal output by the signal generating module 600. Since the duration of the first voltage is the same as the duration of the first signal and the duration of the second voltage is the same as the duration of the second signal, the signal generated by the signal generating module 600 is amplified.

[0059] In some embodiments, the signal generating module includes a simulation unit; the simulation unit is electrically connected to the first control end of the amplifier and the second control end of the amplifier; the simulation unit outputs a simulation signal to the first control end of the amplifier and the second control end of the amplifier, and the amplifier converts the DC voltage received from the power supply module into a first voltage and a second voltage based on the simulation signal.

[0060] Specifically, the amplifier converts the DC voltage output by the power module into a first voltage according to the first simulation signal output by the simulation unit, and converts the DC voltage output by the power module into a second voltage according to the second simulation signal output by the simulation unit. Since the duration of the first voltage is the same as the duration of the first simulation signal, and the duration of the second voltage is the same as the duration of the second simulation signal, the simulation signal provided by the simulation unit is amplified.

[0061] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0062] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A high power density amplifier, It is characterized in that include: A control module, a first power module and a second power module; The input end of the first power module and the input end of the second power module are both electrically connected to the power module, the output end of the first power module and the output end of the second power module are both electrically connected to the energy-demanding device, and the control module is electrically connected to the signal generating module; The first control end of the first power module is electrically connected to the first output end of the control module, and the second control end of the first power module is electrically connected to the second output end of the control module; the first control end of the second power module is electrically connected to the second output end of the control module, and the second control end of the second power module is electrically connected to the first output end of the control module; Wherein, the first output end of the control module outputs a first control signal based on the signal output by the signal generating module; the second output end of the control module outputs a second control signal based on the signal output by the signal generating module; the first control signal is used to control the first power module and the second power module to output a first voltage to the energy-demanding device based on the output voltage of the power module; The second control signal is used to control the first power module and the second power module to output a second voltage to the energy-demanding device based on the output voltage of the power module.

2. The high power density amplifier according to claim 1, It is characterized in that The first power module includes a first upper switch unit and a first lower switch unit; the second power module includes a second upper switch unit and a second lower switch unit; The first upper switch unit is electrically connected in parallel with the first lower switch unit, and the second upper switch unit is electrically connected in parallel with the second lower switch unit; the input end of the first upper switch unit, the input end of the first lower switch unit, the input end of the second upper switch unit and the input end of the second lower switch unit are all electrically connected to the power module; the output end of the first upper switch unit and the output end of the second upper switch unit are both electrically connected to the energy-demanding device, and the output end of the first lower switch unit and the output end of the second lower switch unit are both electrically connected to the energy-demanding device; the control end of the first upper switch unit and the control end of the second lower switch unit are both electrically connected to the first output end of the control module, and the control end of the second upper switch unit and the control end of the first lower switch unit are both electrically connected to the second output end of the control module; Among them, the first upper switch unit and the second lower switch unit output a first voltage to the energy-demanding device based on the first control signal output by the control module and the output voltage of the power module; the second upper switch unit and the first lower switch unit output a second voltage to the energy-demanding device based on the second control signal output by the control module and the output voltage of the power module.

3. The high power density amplifier according to claim 2, It is characterized in that The switch unit comprises at least one switch element group; The switch element group includes a driver and at least two switch elements; The control ends of the at least two switch elements are electrically connected to the output end of the driver, the first ends of the at least two switch elements are electrically connected to the power module, the second ends of the at least two switch elements are electrically connected to the energy-demanding device, and the control end of the driver is electrically connected to the control module; The driver is used to control the on and off of the at least two switch elements according to the control signal output by the control module.

4. The high power density amplifier according to claim 3, It is characterized in that The switch element is a MOS tube; The gate of the MOS tube is electrically connected to the output end of the driver, the first electrode of the MOS tube is electrically connected to the power module, and the second electrode of the MOS tube is electrically connected to the energy-demanding device.

5. The high power density amplifier according to claim 2, It is characterized in that Also includes a filtering module; The first input end of the filter module is electrically connected to the output end of the first upper switch unit and the output end of the second upper switch unit, the second input end of the filter module is electrically connected to the output end of the first lower switch unit and the output end of the second lower switch unit, and the output end of the filter module is electrically connected to the energy-demanding device.

6. The high power density amplifier according to claim 5, It is characterized in that The filtering module includes a first inductor, a second inductor and a first capacitor; The first end of the first inductor is electrically connected to the output end of the first upper switch unit and the output end of the second upper switch unit, and the second end of the first inductor is electrically connected to the first end of the first capacitor; the first end of the second inductor is electrically connected to the output end of the first lower switch unit and the output end of the second lower switch unit, and the second end of the second inductor is electrically connected to the second end of the first capacitor; the first end of the first capacitor is electrically connected to the first input end of the energy-demanding device, and the second end of the first capacitor is electrically connected to the second input end of the energy-demanding device.

7. The high power density amplifier according to any one of claims 1 to 6, It is characterized in that It also includes a voltage regulator module; The input end of the voltage stabilizing module is electrically connected to the power module, the first output end of the voltage stabilizing module is electrically connected to the input end of the first power module, and the second output end of the voltage stabilizing module is electrically connected to the input end of the second power module.

8. The high power density amplifier according to claim 7, It is characterized in that The voltage stabilizing module includes a first resistor, a second resistor, a second capacitor, a third capacitor, a fourth capacitor, a fifth capacitor, a sixth capacitor and a seventh capacitor; The first end of the first resistor is electrically connected to the first output end of the power module, the second end of the first resistor is electrically connected to the second end of the second resistor, and the first end of the second resistor is electrically connected to the second output end of the power module; the first end of the first resistor is also electrically connected to the input end of the first power module, and the first end of the second resistor is also electrically connected to the input end of the second power module; the first resistor is electrically connected in parallel to the second capacitor, the third capacitor and the fourth capacitor, and the second resistor is electrically connected in parallel to the fifth capacitor, the sixth capacitor and the seventh capacitor.

9. A high power density amplifier system, It is characterized in that It comprises a power supply module, an energy-demanding device, a power supply grid, a signal generating module and a high power density amplifier as claimed in any one of claims 1 to 8; The power supply module is electrically connected to the power supply grid, the power supply module is electrically connected to the first input terminal of the amplifier and the second input terminal of the amplifier, the first output terminal of the amplifier and the second output terminal of the amplifier are electrically connected to the energy-demanding device, and the control terminal of the amplifier is also electrically connected to the signal generating module; The power supply module converts the three-phase AC voltage provided by the power supply grid into a DC voltage, and the amplifier converts the DC voltage output by the power supply module into a first voltage and a second voltage based on the signal output by the signal generation module.

10. The high power density amplifier system according to claim 9, It is characterized in that The signal generating module comprises a simulation unit; the simulation unit is electrically connected to the first control terminal of the amplifier and the second control terminal of the amplifier; The simulation unit outputs a simulation signal to the first control terminal of the amplifier and the second control terminal of the amplifier. The amplifier converts the DC voltage received from the power module into the first voltage and the second voltage based on the simulation signal.

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