阅读说明：本技术 一种具有能量回收的电感储能脉冲电源 (Inductance energy storage pulse power supply with energy recovery ) 是由 李海涛 刘晓辉 李震梅 张存山 胡元潮 左星宇 梁晓宇 于 2019-12-16 设计创作，主要内容包括：一种具有能量回收的电感储能脉冲电源,属于脉冲功率技术领域。包括一次侧和二次侧,一次侧和二次侧之间通过高温超导脉冲变压器耦合,其特征在于：所述的负载包括负载电阻和负载电感,负载、开关与副边绕组电感的两端形成放电回路；在二次侧的放电回路中还连接有能量回收电路,能量回收电路的储能电容、可控开关与负载形成续流回路。在本用于脉冲电源剩余能量回收的电路中,通过设置能量回收电路,并通过能量回收电路中的储能电感、可控开关与负载形成续流回路,通过续流回路回收剩余能量,为下一个充放电周期的电流提供了续流,同时增加放电电流陡度,缩短了放电时间。(An inductance energy storage pulse power supply with energy recovery belongs to the technical field of pulse power. Including once side and secondary side, through high temperature superconducting pulse transformer coupling between once side and the secondary side, its characterized in that: the load comprises a load resistor and a load inductor, and a discharge loop is formed by the load, the switch and two ends of the secondary winding inductor; and the energy recovery circuit is also connected in the discharge loop of the secondary side, and an energy storage capacitor, a controllable switch and a load of the energy recovery circuit form a follow current loop. In this a circuit for pulse power supply residual energy retrieves, through setting up energy recuperation circuit to form the afterflow return circuit through energy storage inductance, controllable switch and the load in the energy recuperation circuit, retrieve the residual energy through the afterflow return circuit, provide the afterflow for the electric current of next charge-discharge cycle, increase the discharge current steepness simultaneously, shortened the discharge time.)

1. The utility model provides an inductance energy storage pulse power supply with energy recuperation, includes once side and secondary side, passes through the coupling of high temperature superconducting pulse transformer between once side and the secondary side, is provided with the DC voltage source that is used for charging high temperature superconducting pulse transformer's primary winding inductance at once side, is provided with load, its characterized in that in the secondary side: the load comprises a load resistor and a load inductor, and the load is connected with the switch in series and then connected to two ends of a secondary winding inductor of the high-temperature superconducting pulse transformer to form a discharge loop;

and an energy recovery circuit is also connected in the discharge loop of the secondary side, in the energy recovery circuit, an energy storage capacitor, a controllable switch and an energy storage inductor are connected in series and then connected to two ends of the secondary winding inductor, and a diode is further arranged, wherein one end of the diode is connected with a load, and the other end of the diode is connected between the energy storage capacitor and the controllable switch, so that the load, the energy storage inductor and the controllable switch form a follow current loop.

2. The inductive energy storage pulsed power supply with energy recovery as claimed in claim 1, characterized in that: and a buffer inductor is also connected in series in the discharge loop of the secondary side, one end of the buffer inductor is connected with the synonym end of the secondary side winding, and the other end of the buffer inductor is simultaneously connected with a load and an energy recovery circuit.

3. The inductive energy storage pulsed power supply with energy recovery as claimed in claim 1, characterized in that: and a diode is also connected in series in the discharge loop of the secondary side, the cathode of the diode is connected with the dotted terminal of the secondary side winding, and the anode of the diode is simultaneously connected with the switch and the energy recovery circuit.

4. The inductive energy storage pulsed power supply with energy recovery as claimed in claim 1, characterized in that: the primary side is provided with a power switch, a direct-current voltage source, a primary winding inductor and the power switch are connected in series to form a charging loop, and a bridge circuit for leakage inductance energy recovery and feedback charging is connected in parallel between the dotted terminal and the non-dotted terminal of the primary winding inductor.

5. The inductive energy storage pulsed power supply with energy recovery as claimed in claim 4, characterized in that: the bridge circuit comprises a pulse capacitor, two diodes and two controllable switches, wherein the first diode and the first controllable switch are connected in series to form a first loop connected in parallel to the primary winding of the high-temperature superconducting pulse transformer, the second controllable switch and the second diode are connected in series to form a second loop connected in parallel to the primary winding of the high-temperature superconducting pulse transformer, one end of the pulse capacitor is connected between the diode and the controllable switch of the first loop, and the other end of the pulse capacitor is connected between the controllable switch and the diode of the second loop.

6. Inductive energy storage pulsed power supply with energy recovery according to claim 1 or 5, characterized in that: the controllable switch is a thyristor.

Technical Field

An inductance energy storage pulse power supply with energy recovery belongs to the technical field of pulse power.

Background

The pulse power technology is an emerging subject, and mainly researches how to economically and reliably store energy and effectively transfer the stored energy to a load, so that the pulse power technology has the characteristics of high voltage, large current, high power and strong pulse. Pulse power technology has been developed over half a century and has used a large amount of application space in the more than a dozen of fields of modern science and technology, and pulse power technology has become the basis of electromagnetic weaponry, particularly in the field of electromagnetic emissions. The pulse power technology is an important component in the modern high and new technology field, the application space of the pulse power technology is gradually expanded from the national defense technology and the high and new technology field to the civil industry field, and the pulse power technology gradually plays an increasingly large role in the civil and industrial fields.

In the pulse power technology, a capacitor or an inductor is generally adopted as an energy storage element, wherein the capacitor is relatively mature as the energy storage element, but the capacitor has the defect of low energy storage density. Compared with capacitive energy storage, inductive energy storage has higher energy storage density and faster discharge speed, and has important significance for realizing light weight, miniaturization and modularization of the pulse power supply. However, after the discharge of the inductive energy storage pulse power supply is finished, more residual energy is left in the inductive coil, and occupies a large part of proportion in the total energy, so that the utilization efficiency of the energy is influenced.

When the pulse power supply using the inductor as the energy storage element is applied to the field of electromagnetic emission, after the electromagnetic orbital cannon emits, if the residual energy is excessive, an electric arc can be generated on an emission orbit, and the electromagnetic emission speed and the emission orbit distance are influenced. The remaining energy recovery circuits are less studied at this stage.

In the technical scheme, the inductive energy storage type pulse power supply circuit structure for electromagnetic emission is provided in Chinese patent with the application number of 201710639713.6 and the patent name of 'pulse power supply circuit, pulse power supply, electromagnetic emission device and control method of pulse power supply circuit', and residual energy is collected and used in the next period through energy conversion capacitor multiplexing, so that the utilization rate of energy is improved. However, the circuit current conversion process is more complicated and the control complexity is higher in the technical scheme; the load in design is an assumed pure resistance load, and only residual energy recovery of the circuit inductance and the leakage inductance thereof can be realized, but residual energy in the inductive load cannot be recovered.

In the technical scheme disclosed in chinese patent with the application number of 201810064971.0 and the patent name of "a multi-module mode superconducting energy storage repetition frequency pulse power supply", the residual energy can be recovered and applied in the next charge-discharge cycle, and a follow current can be formed before the charging command of the next charge-discharge cycle comes through the unidirectional controllable branch and the unidirectional conducting branch. However, the technical problems of slow circuit blocking process and slow discharge current gradient exist in the technical scheme, so that the discharge time is influenced.

Therefore, the pulse power supply capable of increasing the gradient of the discharge current and reducing the blocking time is designed, and has important significance for shortening the track distance and improving the launching speed of the electromagnetic gun.

Disclosure of Invention

The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the energy recovery circuit is arranged, the follow current loop is formed by the energy storage inductor, the controllable switch and the load in the energy recovery circuit, the residual energy is recovered through the follow current loop, follow current is provided for the next charging and discharging period, the discharging current gradient is increased, and the discharging time is shortened.

The technical scheme adopted by the invention for solving the technical problems is as follows: this inductance energy storage pulse power supply with energy recuperation, including once side and secondary side, through the coupling of high temperature superconducting pulse transformer between once side and the secondary side, be provided with the DC voltage source that is used for charging high temperature superconducting pulse transformer's primary winding inductance on once side, be provided with the load in the secondary side, its characterized in that: the load comprises a load resistor and a load inductor, and the load is connected with the switch in series and then connected to two ends of a secondary winding inductor of the high-temperature superconducting pulse transformer to form a discharge loop;

and an energy recovery circuit is also connected in the discharge loop of the secondary side, in the energy recovery circuit, an energy storage capacitor, a controllable switch and an energy storage inductor are connected in series and then connected to two ends of the secondary winding inductor, and a diode is further arranged, wherein one end of the diode is connected with a load, and the other end of the diode is connected between the energy storage capacitor and the controllable switch, so that the load, the energy storage inductor and the controllable switch form a follow current loop.

Preferably, a buffer inductor is further connected in series in the discharge loop of the secondary side, one end of the buffer inductor is connected with the synonym end of the secondary side winding, and the other end of the buffer inductor is simultaneously connected with the load and the energy recovery circuit.

Preferably, a diode is further connected in series in the discharge circuit on the secondary side, a cathode of the diode is connected to the same-name end of the secondary winding, and an anode of the diode is connected to the switch and the energy recovery circuit at the same time.

Preferably, a power switch is arranged on the primary side, the direct-current voltage source, the primary winding inductor and the power switch are connected in series to form a charging loop, and a bridge circuit for leakage inductance energy recovery and feedback charging is connected in parallel between the dotted terminal and the non-dotted terminal of the primary winding inductor.

Preferably, the bridge circuit comprises a pulse capacitor, two diodes and two controllable switches, the first diode and the first controllable switch are connected in series to form a first loop connected in parallel to the primary winding of the high-temperature superconducting pulse transformer, the second controllable switch and the second diode are connected in series to form a second loop connected in parallel to the primary winding of the high-temperature superconducting pulse transformer, one end of the pulse capacitor is connected between the diode and the controllable switch of the first loop, and the other end of the pulse capacitor is connected between the controllable switch and the diode of the second loop.

Preferably, the controllable switch is a thyristor.

Compared with the prior art, the invention has the beneficial effects that:

1. in the circuit for recovering the residual energy of the pulse power supply, the energy recovery circuit is arranged on the secondary winding, so that the residual energy of the secondary inductor of the coupling inductor and the leakage inductor thereof can be absorbed, the recovery of the residual energy in an inductive load can be realized, a follow current loop is formed by the energy storage inductor, the controllable switch and the load in the energy recovery circuit, and follow current is provided for the next charging and discharging period

2. In the discharging process, the energy storage capacitor recovers the residual energy in the inductive load through the diode, so that the high-amplitude current at the side of the load can be quickly blocked, the gradient of the discharging current is increased, and the discharging time is shortened.

Drawings

Fig. 1 is a schematic diagram of an inductive energy storage pulse power supply with energy recovery.

Fig. 2-4 are schematic diagrams illustrating the working principle of the energy recovery inductive energy storage pulse power supply.

Fig. 5 is a graph of inductive energy storage pulsed power supply load current with energy recovery.

Detailed Description

Fig. 1 to 5 are preferred embodiments of the present invention, and the present invention will be further described with reference to fig. 1 to 5.

The utility model provides an inductance energy storage pulse power supply with energy recuperation, includes once side and secondary side, in the circuit of once side, includes DC voltage source, switch, pulse capacitor, controllable switch and diode, wherein controllable switch, diode all are provided with two to constitute bridge circuit with pulse capacitor. And the secondary side comprises a diode, a controllable switch, a power switch, a buffer inductor, an energy recovery circuit and a load. The primary side and the secondary side are coupled through a high-temperature superconducting pulse transformer, and the controllable switch can be realized through a thyristor or an IGBT.

As shown in fig. 1, the positive pole of the dc voltage source Us is connected in series with the power switch S1, and then connected to the controllable switch Th1, the cathode of the diode D1, and the dotted terminal of the primary winding L1 of the high temperature superconducting pulse transformer. The negative electrode of the direct current voltage source Us is simultaneously connected with the diode D2, the anode of the controllable switch Th2 and the synonym terminal of the primary winding L1 of the high-temperature superconducting pulse transformer. The anode of the controllable switch Th1 is connected to the cathode of the diode D2, the anode of the diode D1 is connected to the cathode of the controllable switch Th2, the anode of the pulse capacitor C1 is connected between the controllable switch Th1 and the diode D2, and the cathode of the pulse capacitor C1 is connected between the diode D1 and the controllable switch Th 2.

The dotted terminal of the secondary winding L2 of the high-temperature superconducting pulse transformer is connected with the cathode of a diode D3, the anode of a diode D3 is respectively connected with the cathode of an energy storage inductor C2 and one end of a switch S2, and the other end of the switch S2 is simultaneously connected with the anode of a diode D4 and a load resistor R_loadOne terminal of (1), a load resistance R_loadAnother end of the first and second inductors is connected in series with a load inductor L_loadAnd then the other end of the buffer inductor Lrr is connected with the synonym end of the secondary winding L2, the other end of the energy storage inductor Lr is connected with the cathode of the controllable switch Th3, and the anode of the controllable switch Th3 is connected with the anode of the energy storage inductor C2 and the cathode of the diode D4. The energy recovery circuit comprises an energy storage capacitor C2, a controllable diode Th3 and an energy storage inductor Lr, and a load resistor R_loadAnd a load inductance L_loadThe load described above is composed.

The specific working process and working principle are as follows:

step a, closing a power switch S1 to make a DC voltage source Us an inductor L₁Charging to a preset current upper limit value;

after the power switch S1 is closed, the dc voltage source Us forms a loop with the primary winding inductor L1 of the high-temperature superconducting pulse transformer through the power switch S1 and charges L1, and after the pre-charge current is reached, the charging of each set of single-module superconducting energy storage continuous pulse power supply is finished, see section "a" in the waveforms shown in fig. 2 and 5.

And step b, turning off a power switch S1 after the current in the primary winding inductor L1 reaches a preset charging current upper limit value, discharging a pulse capacitor C1 in the primary side of the high-temperature superconducting pulse transformer through diodes D1-D2 in each module by the primary winding inductor L1, recovering primary side leakage inductance energy by the pulse capacitor C1, and simultaneously enabling the pulse capacitor to play a role in limiting voltage, so that high-amplitude voltage pulses cannot occur in the primary side superconducting winding at the moment of discharging, and the power requirement of a system on the power switch is reduced.

The switch S2 is closed, and a large current pulse is generated in the secondary winding inductor L2 under the action of mutual inductance at the secondary side of the hts pulse transformer, and the large current pulse forms a discharge loop through the snubber inductor Lrr, the load, the switch S2 and the diode D3 to discharge the load, see section "B" in the waveforms shown in fig. 3 and 5.

Step c, when the load resistor R_loadAnd a load inductance L_loadWhen the current pulse amplitude reaches the maximum value and begins to decrease (see a section "C" in the waveform shown in fig. 5), the controllable switch Th3 is closed, the energy storage capacitor C2 charges the energy storage inductor Lr, the energy in the energy storage capacitor C2 is transferred to the energy storage inductor Lr, and meanwhile, the energy storage inductor Lr and the load resistor R are connected_loadA load inductor L_loadDiode D₄And controllable diode Th3 form a freewheeling circuit, see segment "D" in the waveforms shown in fig. 4 and fig. 5.

And d, after the current in the energy storage inductor Lr decays to zero in the freewheeling process, turning off the controllable switch Th3, as shown in the sections "E" and "F" in the waveform shown in fig. 5.

Step e, the switch S2 is turned off, the pulse power source finishes discharging the load, and the coupling inductor L2 and the residual energy in the load are collectively transferred to the energy storage capacitor C2 through the diodes D3 and D4, as shown in the section "G" in the waveform shown in fig. 5. If receiving the continuous work instruction, returning to the step a, and if not, executing the step f;

at step f, the operation ends, see section "H" in the waveform shown in FIG. 5.

In the working process and the working principle steps, the working state of the circuit is controlled by controlling the on-off time of different controllable switches. The on-off time of the controllable switch can be controlled by setting a single chip microcomputer program.

Meanwhile, as can be seen from the above, in the circuit for recovering surplus energy of pulse power supply of the present inventionThe energy in the energy storage capacitor C2 can be transferred to the energy storage inductor Lr, the energy storage inductor Lr and the load resistor R through the controllable diode Th3 due to the energy recovery circuit arranged on the secondary side_loadAnd a load inductance L_loadA free-wheeling loop can be formed by the diode D4 and the controllable diode Th3, so that the residual energy of the secondary side inductor of the coupling inductor and the leakage inductor thereof can be absorbed, and the residual energy in the inductive load can be recovered. As shown in fig. 5, the energy recovery circuit recovers the remaining energy to provide a follow current for the next charge-discharge cycle, and increases the gradient of the discharge current to shorten the discharge time.

The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.