Inductively stored energy type pulse power supply capable of quickly cutting off load tail wave

Abstract

The application discloses an inductance energy storage type pulse power supply capable of quickly cutting off load tail waves, and belongs to the technical field of electromagnetic emission, which comprises a primary power supply module, an intermediate energy storage module and a load module which are connected in parallel with each other; the intermediate energy storage module comprises a first inductor L1 and a second inductor L2 which are connected in series with the same name end; a fifth thyristor T5 is further connected in parallel between the primary power supply module and the load module, the anode of the T5 is connected to the positive output end of the primary power supply module, and the cathode of the T5 is connected to the connection end of the L1 and the L2; the primary power supply module provides pulse current to the load module through the intermediate energy storage module, and the T5 is turned on when a set charging target is reached, the primary power supply module charges the L2, the magnetic flux of the L2 is increased to generate a reverse voltage in the load module, and thus the tail wave current of the load module is cut off. The load tail wave current can be quickly cut off, so that the load tail wave current is prevented from burning the muzzle of an electromagnetic emitter.

Description

Technical Field

[0001] This invention belongs to the field of electromagnetic emission technology, and more specifically, relates to an inductive energy storage pulse power supply that can quickly cut off load tail waves. Background Technology

[0002] The primary application of pulsed power supplies is electromagnetic launching. By controlling electrical energy, projectiles can be precisely accelerated within the barrel, resulting in uniform force on the projectile during acceleration, facilitating the integration of precision guidance systems. Electromagnetic railguns operate with extremely short projectile acceleration times, typically only a few milliseconds, yet require a massive amount of energy from the power supply. Conventional power supplies cannot meet this demand, usually necessitating the storage of primary energy in an intermediate energy storage system, followed by instantaneous release of the energy, controlled by a power regulator to adapt to the load requirements. In pulsed power supplies, inductive energy storage is the optimal choice.

[0003] Existing inductive energy storage pulsed power supplies used for electromagnetic launch suffer from excessively long pulse widths in their pulse current tails. At the moment the armature leaves the barrel, a significant current still flows through the inductor, often causing muzzle arcing, resulting in energy loss and potentially muzzle burns. Furthermore, the wasted energy significantly reduces the launch efficiency of the device. Therefore, limiting the load tail current is of paramount importance for the entire electromagnetic launch system. Summary of the Invention

[0004] In response to the deficiencies and improvement needs of existing technologies, this invention provides an inductive energy storage pulse power supply that can quickly cut off load tail waves. Its purpose is to solve the problem of muzzle burn in electromagnetic launchers by increasing the load current shutdown circuit to quickly cut off the load tail wave current.

[0005] To achieve the above objectives, according to one aspect of the present invention, an inductor-based pulse power supply capable of rapidly interrupting load tailwaves is provided, characterized in that it comprises a primary power module, an intermediate energy storage module, and a load module; the intermediate energy storage module includes a first inductor L1 and a second inductor L2 connected sequentially between the positive and negative output terminals of the primary power module, with the same-name terminals of the first inductor L1 and the second inductor L2 connected in series in the forward direction; the load module is connected in parallel across the two ends of the second inductor L2, and a fifth thyristor T5 is also connected across the primary power module and the load module, the anode of the fifth thyristor T5 being connected to the positive output terminal of the primary power module, and the cathode of the fifth thyristor T5 being connected to the connection terminal of the first inductor L1 and the second inductor L2; the primary power module provides pulse current to the load module through the intermediate energy storage module, and turns on the fifth thyristor T5 when a set charging target is reached, charging the second inductor L2, thereby increasing the magnetic flux of the second inductor L2 to generate a reverse voltage in the load module, thereby interrupting the tailwave current of the load module.

[0006] Furthermore, it also includes a reverse current loop module connected in parallel with the intermediate energy storage module; when the primary power module charges the intermediate energy storage module, the reverse current loop module is used to apply reverse voltage to the primary power module when the charging current reaches a preset value, so as to shut off the charging circuit between the primary power module and the intermediate energy storage module.

[0007] Furthermore, the reverse current circuit module includes a second thyristor T2 and a switching capacitor C connected in series. t Furthermore, the cathode of the second thyristor T2 is connected to the positive output terminal of the primary power module.

[0008] Furthermore, it also includes: an energy self-recovery module connected between the first node and the second node, for recovering the conversion capacitor C. t The energy; wherein, the first node is the connection terminal of the first inductor L1 and the second inductor L2, and the second node is the connection terminal of the second thyristor T2 and the switching capacitor C. t The connection point.

[0009] Furthermore, the energy self-recovery module includes a third thyristor T3 and an adjusting inductor L connected in series. C And the adjusted inductor L C The other end is connected to the first node, and the cathode of the third thyristor T3 is connected to the second node.

[0010] Furthermore, the primary power module includes a primary energy storage capacitor C connected in series. s and the first thyristor T1; the primary energy storage capacitor Cs The positive terminal is connected to the anode of the first thyristor T1, and the cathode of the first thyristor T1 is the positive output terminal of the primary power supply module. The primary energy storage capacitor C s The negative terminal is the negative output terminal of the primary power module.

[0011] Furthermore, it also includes the primary energy storage capacitor C. s A parallel voltage polarity recovery module is used to restore the primary energy storage capacitor C. s Voltage polarity.

[0012] Furthermore, the voltage polarity recovery module includes a sixth thyristor T6 and a conversion inductor L connected in series. t The conversion inductor L t The other end is connected to the primary energy storage capacitor C s The positive electrode of the sixth thyristor T6 is connected to the primary energy storage capacitor C. s The negative electrode.

[0013] Furthermore, the load module includes a fourth thyristor T4 and a load connected in series, with the cathode of the fourth thyristor T4 connected to the cathode of the fifth thyristor T5, and the other end of the load connected to the negative output terminal of the primary power module.

[0014] According to another aspect of the invention, an electromagnetic transmitter is provided, which uses an inductive energy storage pulse power supply that can quickly cut off load tail waves as described above for electromagnetic transmission.

[0015] In summary, the above-described technical solutions conceived in this invention can achieve the following beneficial effects:

[0016] (1) This invention has found that the pulse current of the inductive energy storage type pulse power supply has an excessively long tail pulse width. The tail current in the inductor after the armature leaves the barrel will cause muzzle burn and energy waste. Based on this problem, an inductive energy storage type pulse power supply that can quickly cut off the load tail current is proposed. The load current shutdown circuit is added to quickly cut off the load tail current. At the same time, the remaining energy of the launch is recovered and utilized, reducing the probability of muzzle arc and muzzle burn. The voltage self-recovery rate of the pre-charge capacitor is improved, thereby improving the power supply's ability to launch repeatedly. It has the advantages of high launch efficiency and strong repeatability.

[0017] (2) The design of the energy self-recovery module can effectively utilize the current of the second inductor L2 at the end of the discharge to recover the remaining energy of the previous transmission and use it for the next transmission, thereby improving the energy utilization efficiency, improving the overall circuit discharge efficiency, and saving transmission costs.

[0018] (3) Through circuit design and control, the primary energy storage capacitor C s and conversion capacitor C t Both methods can achieve high voltage self-recovery rates, reducing the capacitor pre-charging time during continuous discharge, which is beneficial for continuous operation of electromagnetic emission; utilizing the primary energy storage capacitor C s As a primary power source, compared to a structure that uses a DC generator as the primary power source, it is smaller in size, lower in cost, easier to obtain, and does not affect power performance.

[0019] (4) The pulse width of the load current waveform can be adjusted by changing the triggering time of the fifth thyristor T5, which makes the circuit operation more flexible and controllable. Attached Figure Description

[0020] Figure 1 The circuit topology of an inductor-based pulse power supply capable of rapidly truncating load tail waves is provided in an embodiment of the present invention.

[0021] Figure 2 for Figure 1 The waveform diagram of the first inductor current and the second inductor current during the charging and discharging process of the power supply is shown.

[0022] Figure 3 for Figure 1 The diagram shows the waveform of the load current during the charging and discharging process of the power supply.

[0023] Figure 4 for Figure 1 The diagram shows the waveforms of the capacitor voltage and the switching capacitor voltage during the charging and discharging process of the power supply.

[0024] Figure 5 for Figure 1 The diagram shows the voltage waveforms across the first thyristor during the charging and discharging process of the power supply.

[0025] Figure 6 This is another circuit topology diagram of an inductive energy storage pulse power supply that can quickly cut off load tail waves, provided in an embodiment of the present invention.

[0026] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein:

[0027] 1 is the primary power supply module, 2 is the intermediate energy storage module, 3 is the load module, 4 is the reverse current circuit module, 5 is the energy self-recovery module, and 6 is the voltage polarity recovery module. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention. Furthermore, the technical features involved in the various embodiments of this invention described below can be combined with each other as long as they do not conflict with each other.

[0029] In this invention, the terms "first," "second," etc. (if present) in the invention and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0030] Figure 1 The circuit topology diagram of an inductive energy storage pulse power supply capable of rapidly truncating load tail waves is provided in an embodiment of the present invention. (See also...) Figure 1 , combined Figures 2-5 This paper provides a detailed description of the inductive energy storage pulse power supply that can quickly cut off the load tailwave in this embodiment.

[0031] The inductor-based pulse power supply capable of quickly cutting off load tailwaves includes a primary power module 1, an intermediate energy storage module 2, and a load module 3. The intermediate energy storage module 2 includes a first inductor L1 and a second inductor L2 connected sequentially between the positive and negative output terminals of the primary power module, with the same-name terminals of the first inductor L1 and the second inductor L2 connected in series in the same direction.

[0032] The load module 3 is connected in parallel across the two ends of the second inductor L2, and a fifth thyristor T5 is also connected across the primary power supply module 1 and the load module 3. The anode of the fifth thyristor T5 is connected to the positive output terminal of the primary power supply module 1, and the cathode of the fifth thyristor T5 is connected to the connection terminal of the first inductor L1 and the second inductor L2.

[0033] The working principle of the inductor energy storage pulse power supply that can quickly cut off the tail wave of the load is as follows: the primary power module 1 provides pulse current to the load module 3 through the intermediate energy storage module 2, and turns on the fifth thyristor T5 when the set charging target is reached. After the fifth thyristor T5 is turned on, the primary power module 1 charges the second inductor L2, which increases the magnetic flux of the second inductor L2 to generate a reverse voltage in the load module 3, thereby cutting off the tail wave current of the load module 3.

[0034] According to an embodiment of the present invention, the primary power module 1 includes a primary energy storage capacitor C connected in series. s And the first thyristor T1. Primary energy storage capacitor C s The positive terminal is connected to the anode of the first thyristor T1, and the cathode of the first thyristor T1 is the positive output terminal of the primary power supply module. The primary energy storage capacitor C s The negative terminal is the negative output terminal of the primary power module. The primary energy storage capacitor C... sIt is a pulse capacitor.

[0035] According to an embodiment of the present invention, the load module 3 includes a fourth thyristor T4 and a load connected in series, wherein the cathode of the fourth thyristor T4 is connected to the cathode of the fifth thyristor T5, and the other end of the load is connected to the negative output terminal of the primary power supply module 1. The fourth thyristor T4 and the fifth thyristor T5 jointly control the on-time and off-time of the load current.

[0036] Preferably, the inductive energy storage pulse power capable of rapidly truncating load tailwaves also includes a reverse current circuit module 4 connected in parallel with the intermediate energy storage module 2. The reverse current circuit module 4 includes a second thyristor T2 and a switching capacitor C connected in series. t Furthermore, the cathode of the second thyristor T2 is connected to the positive output terminal of the primary power module.

[0037] When the primary power module 1 charges the intermediate energy storage module 2, the reverse current circuit module 4 is used to apply reverse voltage to the primary power module 1 when the charging current reaches a preset value, so as to shut off the charging circuit between the primary power module 1 and the intermediate energy storage module 2.

[0038] Preferably, the inductor-based pulse power capable of rapidly truncating load tailwaves further includes an energy self-recovery module 5 connected between the first node and the second node, wherein the first node is the connection terminal of the first inductor L1 and the second inductor L2, and the second node is the second thyristor T2 and the switching capacitor C. t The connection point.

[0039] The energy self-recovery module 5 includes a third thyristor T3 and an adjusting inductor L connected in series. C And adjust the inductor L C The other end is connected to the first node, and the cathode of the third thyristor T3 is connected to the second node. The energy self-recovery module 5 is used to restore the conversion capacitor C. t The energy, and the secondary peak value of the load current.

[0040] Inductive energy storage pulse power that can quickly truncate load tail waves also includes a primary energy storage capacitor C. s The parallel voltage polarity recovery module 6 is used to restore the primary energy storage capacitor C. s The voltage polarity. The voltage polarity recovery module 6 includes a sixth thyristor T6 and a conversion inductor L connected in series. t ; Converting inductance L t The other end is connected to the primary energy storage capacitor C s The positive terminal of the sixth thyristor T6 is connected to the primary energy storage capacitor C. s The negative electrode.

[0041] Preferably, the first inductor L1 and the second inductor L2 are strongly coupled, and the inductance value of the first inductor L1 is larger than that of the second inductor L2. The specific value can be calculated based on the expected charging current. The coupling coefficient between L1 and L2 should be as large as possible. A higher coupling coefficient results in lower leakage inductance, higher energy utilization, and a larger peak load current. Simultaneously, the lower the resistance of the inductors, the better, as this helps reduce heat loss in the inductor coils and thus improves the energy utilization efficiency of the power supply. C With L t The resistance value should be as small as possible, and the inductance value should be determined according to the requirements. C The smaller, C t The shorter the duration of the discharge phase, the larger the peak value of the secondary current, but the turn-off voltage of T3 also increases accordingly. Therefore, the inductance value should be selected appropriately. t The smaller the value, the shorter the polarity recovery phase of the capacitor voltage, and the faster the current flows through L. t The higher the current, the greater the current should be, ensuring it does not exceed the current-carrying capacity of T3. C S The capacitor value should be selected based on the actual situation and circuit requirements. t The capacitor value should be selected based on the overall circuit settings.

[0042] In an inductive energy storage pulse power supply that can quickly cut off load tail waves, C S Pre-charging is required, and the pre-charging voltage should be sufficient to charge the intermediate energy storage module to the set value. t Pre-charging is required, and the charging voltage should be greater than the primary power module voltage at the end of inductor charging; otherwise, T1 may fail to turn off. To ensure reliable turn-off of T1, a fast recovery thyristor is recommended for T1. Pulse thyristors can be selected for T2, T3, T4, T5, and T6. The current-carrying capacity and withstand voltage of each thyristor should both exceed the maximum possible current and the maximum possible voltage. Specific values ​​can be determined through simulation analysis.

[0043] by Figure 1 Taking the circuit topology shown as an example, the working process of the inductor-type pulse power supply that can quickly cut off the load tailwave in this embodiment can be divided into the following ten stages. Before setting up operation, the primary energy storage capacitor C s and conversion capacitor C t Pre-charging is complete.

[0044] The first stage is the inductor charging stage.

[0045] After the first thyristor T1 is turned on, the primary energy storage capacitor C SThe first inductor L1 and the second inductor L2 are charged. When the current flowing through the first inductor L1 and the second inductor L2 rises to a preset value, the second thyristor T2 is triggered to conduct, and the first stage ends.

[0046] The second stage is the shutdown stage.

[0047] Conversion capacitor C t It has a pre-charge voltage, which should be greater than the primary energy storage capacitor C at the end of the first stage. S The voltage. Therefore, after the second thyristor T2 is turned on, the switching capacitor C... t The current rapidly increases to the charging current of the first inductor L1 and the second inductor L2, the current of the first thyristor T1 crosses zero and turns off, and the second stage ends.

[0048] The third stage is the inductor continuing to charge.

[0049] After the second stage is completed, the switching capacitor C t The remaining voltage continues to charge the first inductor L1 and the second inductor L2, causing the current in the first inductor L1 and the second inductor L2 to continue to rise until the switching capacitor C... t All the energy is released. At this point, the current flowing through the first inductor L1 reaches its peak, and the third stage ends.

[0050] The fourth stage is the converter stage.

[0051] Conversion capacitor C t When the plate voltage drops to zero, the switching capacitor C t The charging of the first inductor L1 and the second inductor L2 has now ended. At this point, the first inductor L1 and the second inductor L2 supply power to the switching capacitor C. t Reverse charging. The decrease in magnetic flux linkage in the second inductor L2 causes a turn-on voltage to be applied to the fourth thyristor T4, thus triggering T4 to conduct and allowing current to flow through the load branch. According to the principle of magnetic flux conservation, the current in the first inductor L1 decreases rapidly, while the current in the second inductor L2 increases rapidly. (Conversion capacitor C) t The leakage inductance energy of the first inductor L1 is absorbed until the current of the second thyristor T2 crosses zero and is turned off, at which point the fourth stage ends.

[0052] The fifth stage is the inductive discharge stage.

[0053] After the second thyristor T2 is turned off, the second inductor L2 continues to discharge to the load, following the first-order discharge law of RL during this stage. When the load current drops to a specified value or reaches a specified time, the third thyristor T3 is triggered to conduct, and the fifth stage ends.

[0054] The sixth stage is the capacitor discharge stage.

[0055] After the third thyristor T3 is turned on, the switching capacitor Ct The collected leakage inductance energy is discharged to the load through the third thyristor T3. This generates a second peak in the load current. When the current in the third thyristor T3 crosses zero, the thyristor is turned off under reverse voltage, and the sixth stage ends.

[0056] The seventh stage is the inductive discharge stage.

[0057] After the third thyristor T3 is turned off, the second inductor L2 continues to discharge to the load. When the load current drops to a specified value or reaches a specified time, the fifth thyristor T5 is triggered to conduct, and the seventh stage ends.

[0058] The eighth stage is the load current shutdown stage.

[0059] After the fifth thyristor T5 is turned on, the primary energy storage capacitor C S As the second inductor L2 is charged, its magnetic flux increases. According to the law of electromagnetic induction, this will generate a reverse voltage in the load branch. This voltage reduces the load current to zero, turning off the fourth thyristor T4, and ending the eighth stage.

[0060] The ninth stage is the inductor energy recovery stage.

[0061] After the fourth thyristor T4 is turned off, the fifth thyristor T5 remains on due to the freewheeling effect of the inductor. The second inductor L2 supplies power to the primary energy storage capacitor C. S Charging. When the current in the second inductor L2 drops to zero, the fifth thyristor T5 turns off, at which point the primary energy storage capacitor C... S The ninth stage ends when a voltage with the opposite polarity to the initial charging voltage is applied.

[0062] The tenth stage is the capacitor voltage polarity recovery stage.

[0063] The sixth thyristor T6 is triggered to conduct, and the capacitor, which serves as the primary power supply, first supplies power to the conversion inductor L. t Charging, then being converted by inductor L t Reverse charging. When the conversion inductor L t When the current drops to zero, the sixth thyristor T6 turns off, and the tenth stage ends.

[0064] Combination Figures 2-5 The changes in current and voltage of the relevant devices during the above-mentioned working process are explained.

[0065] Before 7.7ms, the circuit is in the inductor charging phase, and the current flowing through L1 and L2 gradually increases, such as... Figure 2 As shown, at the same time, C S The voltage gradually decreases, such as Figure 5 As shown, the other parts are isolated from the circuit due to the presence of the thyristor, and the parameters remain unchanged.

[0066] At 7.7ms, T2 is triggered to turn on, and the circuit enters the turn-off phase. At this time, T1 is turned off due to reverse voltage. Figure 5 As shown. Afterwards, the currents in L1 and L2 continued to rise, as... Figure 2 As shown, C t Voltage drop, such as Figure 4 As shown.

[0067] At 8.1ms, the currents in L1 and L2 rise to their peak values ​​and begin to decrease. Because the magnetic flux through L2 decreases, T4 experiences a positive voltage and conducts upon receiving the trigger signal, connecting the load branch to the loop. Figure 3 As shown, the circuit enters the commutation stage. Due to the principle of magnetic flux compression, the current in L2 rises rapidly at this time, while the current in L1 falls rapidly, as shown... Figure 2 As shown, leakage inductance energy enters C t This causes the capacitor to have a reverse voltage, such as Figure 4 As shown.

[0068] At 8.75ms, the current in L1 decreases to 0, such as Figure 2 As shown, when T2 is turned off, the circuit enters the inductor discharge stage. The current through L2 and the load current reach their maximum values ​​and then gradually decrease, as... Figure 2 , Figure 3 As shown.

[0069] At 9.7ms, T3 is triggered to conduct, and the circuit enters the capacitor discharge stage. t The collected leakage inductance energy is discharged to the load through T3, C t From reverse voltage to forward voltage, such as Figure 4 As shown. Simultaneously, the load current generates a secondary peak, such as... Figure 3 As shown.

[0070] At 10.5ms, the current of T3 drops to zero and is turned off, C t Return to positive voltage and remain stable, such as Figure 4 As shown. The circuit returns to the inductor discharge phase, L2 and the load current reach their maximum values ​​and then gradually decrease, as shown. Figure 2 , Figure 3 As shown.

[0071] At 12.2ms, T5 is triggered to conduct, C S After T5 charges L2, C S Voltage drop, such as Figure 4 As shown, L2 rises, as Figure 2 As shown, the magnetic flux through L2 increases, causing the load branch to shut down under reverse voltage, and the load current rapidly decreases to zero, as... Figure 3 As shown.

[0072] After the previous stage ended, C SThe voltage has the opposite polarity to the initial charging voltage, such as Figure 4 As shown, the voltage needs to be reversed in preparation for the next transmission. T6 is triggered to conduct at 20ms, C... S The voltage first charges Lt, then Lt charges it in the reverse direction. Ultimately, C... S Voltage reversed, such as Figure 4 As shown.

[0073] Figure 6 Another circuit topology diagram of an inductive energy storage pulse power supply capable of rapidly truncating load tailwaves, provided in an embodiment of the present invention, is shown below. The components included in the inductive energy storage pulse power supply capable of rapidly truncating load tailwaves and the connection relationships between them are already described. Figure 6 The relevant text clearly records this, so I will not repeat it here.

[0074] Figure 6 The circuit topology shown operates in two modes: odd-numbered cycles and even-numbered cycles. During these cycles, the switching capacitor C... t The voltage polarity is opposite. T2 is triggered to turn on during odd-numbered turn-off phases, and T3 is triggered to turn on during even-numbered turn-off phases. The following explanation uses odd-numbered turn-off phases as an example. Figure 6 The working process of the circuit topology shown.

[0075] The first stage is the inductor charging stage.

[0076] After T1 is triggered to conduct, C s L1 and L2 are charged. When the current flowing through L1 and L2 rises to a certain value, T2 is triggered to turn on on an odd number of times and T3 is triggered to turn on on an even number of times, thus ending the first stage.

[0077] The second stage is the shutdown stage.

[0078] C t It has a pre-charge voltage, which should be greater than C at the end of the first stage. S The voltage. Taking an odd number of runs as an example, after T2 is turned on, C t The current rapidly increases to the charging current of L1 and L2, and the current of T1 turns off when it crosses zero, thus ending the second stage.

[0079] The third stage is the inductor continuing to charge.

[0080] After the second phase ended, C t The remaining voltage continues to charge L1 and L2, causing the current in L1 and L2 to continue to rise until C... t All the energy is released. At this point, the current flowing through L1 reaches its peak. The third stage ends.

[0081] The fourth stage is the converter stage.

[0082] Ct When the plate voltage drops to zero, C t The charging of L1 and L2 ends here. At this point, L1 and L2 supply C. t Reverse charging. The decrease in magnetic flux in L2 causes T4 to experience a turn-on voltage, triggering T4 to conduct and allowing current to flow through the load branch. According to the principle of magnetic flux conservation, the current in L1 decreases rapidly, and the current in L2 increases rapidly. C t C absorbs the leakage inductance energy of L1. t The voltage is opposite to the initial voltage until the current at T2 crosses zero and the fourth stage ends.

[0083] The fifth stage is the inductive discharge stage.

[0084] After T2 is turned off, L2 continues to discharge to the load, following the first-order discharge law of RL during this stage. When the load current drops to a specified value or reaches a specified time, T5 is triggered to turn on, ending the fifth stage.

[0085] The sixth stage is the load current shutdown stage.

[0086] After T is turned on, C S As L2 is charged, its magnetic flux increases, which, according to the law of electromagnetic induction, will generate a reverse voltage in the load branch. This voltage acts on the load branch, reducing the load current to zero, turning off T4, and ending the sixth stage.

[0087] The seventh stage is the inductor energy recovery stage.

[0088] After T4 is turned off, T5 remains on due to the freewheeling effect of the inductor. L2 supplies power to C. S Charging. When the L2 current drops to zero, T5 is turned off, at which point C... S The seventh stage ends when a voltage with the opposite polarity to the initial charging voltage is applied.

[0089] The eighth stage is the capacitor voltage polarity recovery stage.

[0090] T6 is triggered to conduct, and the capacitor serving as the primary power supply first supplies power to L. t Charged, then by L t Reverse charging. When L t When the current drops to zero, T6 is turned off, and the eighth stage ends. The circuit then enters the next cycle.

[0091] Figure 6 In the circuit topology shown, the capacitor charging device is located separately outside the circuit. Except for the first transmission, only the primary energy storage capacitor C needs to be charged. S Charging saves space in the charging circuit and increases energy density.

[0092] This invention also provides an electromagnetic transmitter. This electromagnetic transmitter employs... Figures 1-6 The embodiment shown uses an inductive energy storage pulse power supply that can quickly cut off the load tailwave for electromagnetic emission.

[0093] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An inductive energy storage pulse power supply capable of rapidly trunculating load tail waves, characterized in that, It includes a primary power module, an intermediate energy storage module, and a load module; The intermediate energy storage module includes a first inductor L1 and a second inductor L2 connected sequentially between the positive and negative output terminals of the primary power module, with the same-name terminals of the first inductor L1 and the second inductor L2 connected in series in the same direction. The load module is connected in parallel across the two ends of the second inductor L2, and a fifth thyristor T5 is also connected between the primary power supply module and the load module. The primary power module includes a primary energy storage capacitor C connected in series. s and the first thyristor T1, and the primary energy storage capacitor C s The parallel voltage polarity recovery module, the primary energy storage capacitor C s The positive terminal is connected to the anode of the first thyristor T1, and the cathode of the first thyristor T1 is the positive output terminal of the primary power supply module. The primary energy storage capacitor C s The negative terminal is the negative output terminal of the primary power module, and the voltage polarity recovery module is used to restore the primary energy storage capacitor C. s The voltage polarity; the anode of the fifth thyristor T5 is connected to the anode of the first thyristor T1, and the cathode of the fifth thyristor T5 is connected to the connection terminal of the first inductor L1 and the second inductor L2; the primary power module provides pulse current to the load module through the intermediate energy storage module, and turns on the fifth thyristor T5 when the set charging target is reached, and the primary power module charges the second inductor L2, so that the magnetic flux of the second inductor L2 increases to generate a reverse voltage in the load module, thereby cutting off the tail current of the load module.

2. The inductive energy storage pulse power supply capable of rapidly trunculating load tailwaves as described in claim 1, characterized in that, It also includes a reverse flow circuit module connected in parallel with the intermediate energy storage module; When the primary power module charges the intermediate energy storage module, the reverse current circuit module applies reverse voltage to the primary power module when the charging current reaches a preset value, so as to shut off the charging circuit between the primary power module and the intermediate energy storage module.

3. The inductive energy storage pulse power supply capable of rapidly trunculating load tailwaves as described in claim 2, characterized in that, The reverse circuit module includes a second thyristor T2 and a switching capacitor C connected in series. t Furthermore, the cathode of the second thyristor T2 is connected to the positive output terminal of the primary power module.

4. The inductive energy storage pulse power supply capable of rapidly trunculating load tailwaves as described in claim 3, characterized in that, Also includes: An energy self-recovery module connected between the first and second nodes is used to recover the conversion capacitor C. t The energy; wherein, the first node is the connection terminal of the first inductor L1 and the second inductor L2, and the second node is the connection terminal of the second thyristor T2 and the switching capacitor C. t The connection point.

5. The inductive energy storage pulse power supply capable of rapidly trunculating load tailwaves as described in claim 4, characterized in that, The energy self-recovery module includes a third thyristor T3 and an adjusting inductor L connected in series. C And the adjusted inductor L C The other end is connected to the first node, and the cathode of the third thyristor T3 is connected to the second node.

6. The inductive energy storage pulse power supply capable of rapidly trunculating load tailwaves as described in claim 1, characterized in that, The voltage polarity recovery module includes a sixth thyristor T6 and a conversion inductor L connected in series. t The conversion inductor L t The other end is connected to the primary energy storage capacitor C s The positive electrode of the sixth thyristor T6 is connected to the primary energy storage capacitor C. s The negative electrode.

7. The inductive energy storage pulse power supply capable of rapidly trunculating load tailwaves as described in any one of claims 1-5, characterized in that, The load module includes a fourth thyristor T4 and a load connected in series, with the cathode of the fourth thyristor T4 connected to the cathode of the fifth thyristor T5, and the other end of the load connected to the negative output terminal of the primary power module.

8. An electromagnetic transmitter, characterized in that, The electromagnetic transmitter uses an inductive energy storage pulse power supply as described in any one of claims 1-7 to perform electromagnetic transmission.

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