CN219247502U

CN219247502U - Pulse capacitor charge-discharge control circuit

Info

Publication number: CN219247502U
Application number: CN202223262014.XU
Authority: CN
Inventors: 韩永森; 王梓霖; 赵晨光
Original assignee: Harbin University of Science and Technology
Current assignee: Harbin University of Science and Technology
Priority date: 2022-12-06
Filing date: 2022-12-06
Publication date: 2023-06-23
Anticipated expiration: 2032-12-06

Abstract

The utility model relates to a pulse capacitor charge-discharge control circuit. The circuit consists of a main circuit and a control circuit, wherein the main circuit consists of a high-voltage direct-current power supply, a charging resistor, a normally closed auxiliary contact and a normally open auxiliary contact of a contactor, a pulse capacitor, a time-varying load and the like. The control circuit comprises a master switch, a delay relay, a contactor, an energizing delay closed contact switch and the like. The control circuit part delay relay is connected with the contactor in parallel and is connected with the positive electrode, the other end of the delay relay is connected with the negative electrode, the delay relay controls the on-off of the contactor through the delay closed contact switch, the on-off of the contactor can control the on-off of the normally closed normally open auxiliary contact, so that the main circuit can realize the simultaneous switching of the charging circuit and the discharging circuit, and the working state of the main circuit is changed. The utility model can realize the cyclic charge and discharge of the main circuit by setting the working time of the delay relay, and has the advantages of quick response speed, low cost and long service life in the charge and discharge process.

Description

Pulse capacitor charge-discharge control circuit

Technical Field

The utility model relates to the technical field of pulse capacitors, in particular to a charge and discharge control circuit of a pulse capacitor.

Background

The pulse capacitor is used as a core element of a pulse power technology, has the characteristics of high power density, high charge and discharge speed and the like, and is also an important device required by researching electromagnetic ejection equipment; when the pulse capacitor is in a working state of cyclic charge and discharge for a long time, aging phenomenon can occur to influence the performance and the service life of the pulse capacitor; therefore, repeated charge and discharge tests are performed on the pulse capacitor, and the method becomes an effective means for researching the service life and aging characteristics of the pulse capacitor.

The current pulse capacitor control circuit is mainly a common switch or a thyristor switch; the common switch has short service life and slow charge-discharge response speed, and can not perform cyclic charge-discharge control; the thyristor has high cost and is easy to damage; aiming at the defects of a common switch and a thyristor switch, the utility model provides a pulse capacitor charge-discharge control circuit based on a delay relay.

Disclosure of Invention

In order to overcome the defects of the existing pulse capacitor charge-discharge circuit control device, the pulse capacitor charge-discharge control circuit is provided.

The utility model adopts the technical scheme that: a charge-discharge control circuit of pulse capacitor comprises a main circuit and a control circuit; the main circuit part comprises a high-voltage direct-current power supply, a charging resistor, a pulse capacitor, a normally closed auxiliary contact and a normally open auxiliary contact controlled by a contactor, a time-varying resistor and a time-varying inductor; the high-voltage direct current power supply E of the initial stage of the main circuit part is connected with the charging resistor and the normally closed auxiliary contact in series and is connected with the pulse capacitor to form a charging loop; when the contactor is electrified, the normally closed auxiliary contact is opened, the normally open auxiliary contact is closed, and at the moment, the pulse capacitor, the time-varying resistor and the time-varying inductor form a discharge loop; the control circuit comprises a main switch SB, a delay relay, an electrifying delay closing switch, a contactor and the like; the time relay of the control circuit part is connected with the contactor in parallel, one end of the time relay is connected with the positive electrode, and the other end of the time relay is connected with the negative electrode; the power-on delay closing switch is connected with the contactor in series to control the on-off of the contactor; the normally closed auxiliary contact and the normally open auxiliary contact of the contactor are connected with the main circuit to control the switching of the charging and discharging process of the main circuit.

Preferably, the circuit comprises a contactor and a delay relay, wherein the contactor is used for controlling the on-off of a normally closed auxiliary contact and a normally open auxiliary contact in the main circuit, and the delay relay is used for controlling the on-off of the contactor.

Preferably, the delay relay is a DH48S-2Z electronic delay relay, which has a delay range of 0.1S-99 h, and can be used for arbitrarily setting asymmetric delay working time, and is provided with a group of delay reset contacts, so that the delay relay can be controlled repeatedly and circularly.

The utility model has the beneficial effects that.

The utility model provides a pulse capacitor charge-discharge control circuit which can automatically control the charge-discharge process of a pulse capacitor, and has the advantages of high response speed, low cost and long service life in the charge-discharge process.

Drawings

Fig. 1 is a main circuit diagram of a pulse capacitor charge-discharge control circuit.

Fig. 2 is a switching control circuit diagram of the pulse capacitor charge-discharge control circuit.

In the figure, a 1-high voltage direct current power supply; 2-normally closed auxiliary contacts; 3-a normally open auxiliary contact; 4-pulse capacitor; 5-time-varying resistance; 6-time-varying inductance; 7-a time delay relay; 8-energizing the delay closed switch; 9-contactor.

Detailed Description

As shown in the figure, the utility model discloses a pulse capacitor charge-discharge control circuit, which comprises a high-voltage direct-current power supply, a charge resistor, a pulse capacitor, a normally-open normally-closed auxiliary contact controlled by a contactor and a time-varying load, wherein the control circuit comprises a main switch, a delay relay, a contactor and an electrifying delay closing switch.

As shown in the figure, the delay working time of the delay relay is set in advance, so that the delay working time can meet the time requirement of the pulse capacitor in the charging and discharging process; starting a main switch SB, starting a delay relay to work, electrifying, delaying to close the switch to be in an off state, stopping electrifying the contactor, sucking the normally closed auxiliary contact, opening the normally open auxiliary contact, switching on a main circuit charging loop, switching off a discharging circuit, and charging a pulse capacitor by a high-voltage direct current power supply through a charging resistor; after the delay time set by the delay relay is reached, the electrified delay closing switch is closed, the connected contactor is electrified, the normally closed auxiliary contact is opened, the normally open auxiliary contact is attracted, the main circuit is switched, the charging circuit is opened, the discharging circuit is closed, and the pulse capacitor starts to discharge to the time-varying load; the working time of the delay relay is set in advance, so that the pulse capacitor is completely discharged after the contactor is electrified for a period of time; then the switch is turned on for a time delay to turn off again, the contactor is powered off, the normally closed auxiliary contact is attracted, and the normally open auxiliary contact is turned off; the main circuit loop is switched again, the charging loop is switched on, the power-off loop is switched off, the high-voltage direct-current power supply charges the pulse capacitor again, and the cycle is repeated in this way, so that the cycle control of the pulse capacitor charging and discharging circuit is realized.

Claims

1. A charge and discharge control circuit of a pulse capacitor is characterized in that: the circuit consists of a main circuit and a switch control circuit; the main circuit part comprises a high-voltage direct-current power supply (1), a charging resistor, a normally closed auxiliary contact (2) and a normally open auxiliary contact (3) which are controlled by a contactor, a pulse capacitor (4), a time-varying resistor (5) and a time-varying inductor (6); the high-voltage direct current power supply (1) of the initial stage of the main circuit part is connected with the charging resistor and the normally closed auxiliary contact (2) in series and is connected with the pulse capacitor (4) to form a charging loop; when the contactor (9) is electrified, the normally closed auxiliary contact (2) is opened, the normally open auxiliary contact (3) is closed, and the pulse capacitor (4), the time varying resistor (5) and the time varying inductor (6) form a discharging loop.

2. The charge-discharge control circuit of a pulse capacitor according to claim 1, wherein: the switch control circuit comprises a main switch SB, a delay relay (7), an electrifying delay closing switch (8) and a contactor (9); the control circuit part delay relay (7) is connected in parallel with the contactor (9), one end of the control circuit part delay relay is connected with the positive electrode, and the other end of the control circuit part delay relay is connected with the negative electrode; the power-on delay closing switch (8) is connected in series with the contactor (9) to control the on-off of the contactor; the normally closed auxiliary contact (2) and the normally open auxiliary contact (3) of the contactor are connected with a main circuit to control the switching of the charging and discharging processes of the main circuit.