WO2012122882A1 - Fast discharging circuit for direct-current bus of anti-explosive converter - Google Patents

Fast discharging circuit for direct-current bus of anti-explosive converter Download PDF

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Publication number
WO2012122882A1
WO2012122882A1 PCT/CN2012/071509 CN2012071509W WO2012122882A1 WO 2012122882 A1 WO2012122882 A1 WO 2012122882A1 CN 2012071509 W CN2012071509 W CN 2012071509W WO 2012122882 A1 WO2012122882 A1 WO 2012122882A1
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WO
WIPO (PCT)
Prior art keywords
controllable switch
switch device
bus
current bus
circuit
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Application number
PCT/CN2012/071509
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French (fr)
Chinese (zh)
Inventor
陈寄园
孟军
郑忠明
车前里
阎鑫昌
鲁俊
娄聪
何晓然
Original Assignee
辽宁荣信防爆电气技术有限公司
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Publication of WO2012122882A1 publication Critical patent/WO2012122882A1/en

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/10—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers
    • H02H7/12—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers
    • H02H7/122—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for converters; for rectifiers for static converters or rectifiers for inverters, i.e. dc/ac converters

Definitions

  • the invention relates to the technical field of DC demand discharge after the device is powered off, and the DC bus fast discharge circuit of the explosion-proof converter. Background technique
  • the DC bus voltage is discharged by the voltage equalizing resistor or the low-resistance circuit on the auxiliary power board. Because the impedance of the discharge circuit is large, the discharge time will be long, which often affects the equipment. The maintenance time cannot meet the site requirements. Moreover, since the resistor is always connected to both ends of the DC bus, the resistor has a large volume and a large heat generation, which brings inconvenience to the installation and heat dissipation of the system, especially in a coal mine environment, the device needs to be in the device. The stored energy is as low as 0.2 mJ in 15 minutes. Summary of the invention
  • the object of the present invention is to provide a rapid discharge circuit for a DC bus of an explosion-proof converter, which is characterized by slow discharge of a conventional explosion-proof converter, large power value of a discharge resistor, large heat generation, large volume, and the like.
  • the discharge resistor is used to realize the rapid discharge of the DC bus.
  • the resistor has a strong short-time overload capability, and the discharge resistor with smaller power, smaller volume and smaller resistance can be selected, so that the system has higher work. Stability and reliability, safety; Increased system maintenance and repair efficiency, reduced equipment size and reduced system cost.
  • Explosion-proof converter DC bus fast discharge circuit including control power supply, controllable switch type device, power discharge resistor,
  • RCD RC absorption circuit the control power supply is connected with the control end of the controllable switch device, and the power discharge resistor is connected in series with the contact switch of the controllable switch device and connected to the DC bus plate with large capacitance support that needs to be discharged. Both positive and negative ends; RCD RC absorption loop is connected to both ends of the contact switch of the controllable switch type device. After the system is powered off, by controlling the power-on and power-off of the control terminal of the controllable switch device, the contact switch of the controllable switch device is controlled to be turned on and off, thereby achieving the opening and closing of the discharge resistor, thereby achieving rapid implementation. Discharge.
  • the controllable switch type device is a relay, a contactor, or a thyristor.
  • the advantage of the invention is that -
  • the energy stored in the DC bus voltage can be quickly reduced to less than 0.2mJ in 15 minutes.
  • Fig. 1 is a schematic structural view of a DC bus rapid discharge circuit of an explosion-proof converter.
  • J-controllable switch device control terminal K-controllable switch device contact switch R-power discharge resistor C-capacitor R1-resistor C1-capacitor D1-diode 1-controllable switch device 2- DC capacitor and bus bar plate for DC support
  • Explosion-proof converter DC bus fast discharge circuit including control power (including AC and DC), controllable switching device 1, power discharge resistor R, RCD RC absorption circuit.
  • Controllable Switching Devices 1 Selectable relays, contactors, thyristors, etc.
  • the control power supply is connected to the control terminal J of the controllable switching device, and the power discharge resistor R is connected in series with the contact switch K of the controllable switching device and is connected to the positive DC bus plate with the large capacitance C support to be discharged. Negative ends.
  • the RCD resistance-capacitance absorption circuit is composed of a resistor R1, a diode D1, and a capacitor C1. After the resistor R1 is connected in parallel with the diode D1, it is connected in series with the capacitor C1 and connected to the contact switch K of the controllable switching device to absorb the electromagnetic interference of the breaking.
  • the working principle of the invention is as follows: After the system is powered off, the rapid discharge of the DC bus capacitor C is realized by the switching of the contact switch K of the controllable switching device in the control loop and by the power discharge resistor R.
  • the working voltage ranges from 0V to 2KV. Its main function: After the system is powered off, the DC bus capacitor is quickly discharged, so that the energy stored in the DC bus capacitor can be as low as 0.2mJ in 15 minutes.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

A fast discharging circuit for a direct-current bus of an anti-explosive converter is provided. The circuit comprises a control power supply, a controllable switch device(1),a power discharge resistor(R) and an RCD(R1,C1,D1)resistance-capacitance absorbing loop, wherein the control power supply is connected with the control end of the controllable switch device, the power discharge resistor is connected in series with the controllable switch device and then is connected in parallel with a direct current bus(2) which is required to be supported by a high capacitance, and the RCD(R1,C1,D1) resistance-capacitance absorbing loop is connected in parallel with the controllable switch device. After a system is powered down, quick discharge of a capacitor(c) of the direct current bus(2) is realized by controlling the on and off the controllable switch device(1). The circuit can quickly reduce the energy stored in the capacitor of the direct current bus.

Description

防爆变流器直流母线快速放电电路 技术领域  Explosion-proof converter DC bus fast discharge circuit
本发明涉及设备断电后直流需放电技术领域， 防爆变流器直流母线快速放电电路。 背景技术  The invention relates to the technical field of DC demand discharge after the device is powered off, and the DC bus fast discharge circuit of the explosion-proof converter. Background technique
传统的防爆变流器断电后是靠均压电阻或辅助电源板上的低阻回路来实现直流母线电 压放电的， 由于该放电回路的阻抗较大， 所以放电时间会很长， 常影响设备的维护时间， 不 能满足现场要求。 而且由于该电阻是一直并接在直流母线两端， 所以该电阻体积较大， 发热 量较大， 给系统的安装及散热方面带来不便， 特别是在煤矿井下环境下， 设备需要将设备中 的储存的能量在 15分钟内低至 0.2mJ以下。 发明内容  After the traditional explosion-proof converter is powered off, the DC bus voltage is discharged by the voltage equalizing resistor or the low-resistance circuit on the auxiliary power board. Because the impedance of the discharge circuit is large, the discharge time will be long, which often affects the equipment. The maintenance time cannot meet the site requirements. Moreover, since the resistor is always connected to both ends of the DC bus, the resistor has a large volume and a large heat generation, which brings inconvenience to the installation and heat dissipation of the system, especially in a coal mine environment, the device needs to be in the device. The stored energy is as low as 0.2 mJ in 15 minutes. Summary of the invention
本发明的目的是针对现有防爆变流器放电缓慢、 放电电阻功率值大、 发热量大、 体积大 等一些不足， 提供了一种防爆变流器直流母线快速放电电路， 采用断电投切放电电阻的方式 来实现直流母线的快速放电，利用电阻具有很强的短时过载能力的特点，可以选用功率较小， 体积较小， 阻值较小的放电电阻， 使系统具有较高的工作稳定性和可靠性、 安全性； 增强了 系统的维护和维修效率， 减小了设备的体积， 降低了系统成本。  The object of the present invention is to provide a rapid discharge circuit for a DC bus of an explosion-proof converter, which is characterized by slow discharge of a conventional explosion-proof converter, large power value of a discharge resistor, large heat generation, large volume, and the like. The discharge resistor is used to realize the rapid discharge of the DC bus. The resistor has a strong short-time overload capability, and the discharge resistor with smaller power, smaller volume and smaller resistance can be selected, so that the system has higher work. Stability and reliability, safety; Increased system maintenance and repair efficiency, reduced equipment size and reduced system cost.
为实现上述目的， 本发明通过以下技术方案实现：  To achieve the above object, the present invention is achieved by the following technical solutions:
防爆变流器直流母线快速放电电路， 包括控制电源、 可控开关类器件、 功率放电电阻、 Explosion-proof converter DC bus fast discharge circuit, including control power supply, controllable switch type device, power discharge resistor,
RCD 阻容吸收回路， 控制电源与可控开关类器件的控制端相连接， 功率放电电阻与可控开 关类器件的触点开关串联后并接于需要放电的含大电容支撑的直流母线极板的正负两端； RCD 阻容吸收回路并接于可控开关类器件触点开关的两端。 系统断电后， 通过控制可控开 关类器件控制端的得电和失电， 从而控制可控开关类器件触点开关接通和断开， 从而实现放 电电阻的接通和断开， 从而实现快速放电。 RCD RC absorption circuit, the control power supply is connected with the control end of the controllable switch device, and the power discharge resistor is connected in series with the contact switch of the controllable switch device and connected to the DC bus plate with large capacitance support that needs to be discharged. Both positive and negative ends; RCD RC absorption loop is connected to both ends of the contact switch of the controllable switch type device. After the system is powered off, by controlling the power-on and power-off of the control terminal of the controllable switch device, the contact switch of the controllable switch device is controlled to be turned on and off, thereby achieving the opening and closing of the discharge resistor, thereby achieving rapid implementation. Discharge.
所述的可控开关类器件为继电器、 接触器、 或晶闸管。  The controllable switch type device is a relay, a contactor, or a thyristor.
与传统的变流器断电后的直流母线电压放电回路相比， 本发明的优点是- Compared with the DC bus voltage discharge circuit after the traditional converter is powered off, the advantage of the invention is that -
1 ) 能快速的将直流母线电压所储存的能量在 15分钟内低至 0.2mJ以下。 1) The energy stored in the DC bus voltage can be quickly reduced to less than 0.2mJ in 15 minutes.
2) 具有较高的工作稳定性和可靠性、 安全性。  2) It has high work stability, reliability and safety.
3 ) 增强系统的维护和维修效率。  3) Enhance system maintenance and repair efficiency.
减小了设备的体积， 降低了系统成本。 附图说明 Reduces the size of the device and reduces system cost. DRAWINGS
图 1是防爆变流器直流母线快速放电电路的结构示意图。  Fig. 1 is a schematic structural view of a DC bus rapid discharge circuit of an explosion-proof converter.
图中： J-可控开关类器件的控制端 K-可控开关类器件的触点开关 R-功率放电电阻 C-电容 R1-电阻 C1-电容 D1-二极管 1-可控开关类器件 2-做直流支撑的直流电容和母 线极板 具体实施方式  In the figure: J-controllable switch device control terminal K-controllable switch device contact switch R-power discharge resistor C-capacitor R1-resistor C1-capacitor D1-diode 1-controllable switch device 2- DC capacitor and bus bar plate for DC support
见图 1， 防爆变流器直流母线快速放电电路， 包括控制电源（包括交流和直流）、可控开 关类器件 1， 功率放电电阻 R、 RCD阻容吸收回路。 可控开关类器件 1可选择继电器、 接触 器、 晶闸管等。 控制电源与可控开关类器件的控制端 J相连接， 功率放电电阻 R与可控开关 类器件的触点开关 K串联后并接于需要放电的含大电容 C支撑的直流母线极板的正负两端。  See Figure 1. Explosion-proof converter DC bus fast discharge circuit, including control power (including AC and DC), controllable switching device 1, power discharge resistor R, RCD RC absorption circuit. Controllable Switching Devices 1 Selectable relays, contactors, thyristors, etc. The control power supply is connected to the control terminal J of the controllable switching device, and the power discharge resistor R is connected in series with the contact switch K of the controllable switching device and is connected to the positive DC bus plate with the large capacitance C support to be discharged. Negative ends.
RCD阻容吸收回路由电阻 Rl、 二极管 Dl、 电容 C1组成。 电阻 R1与二极管 D1并联 后， 与电容 C1串联，并接于可控开关类器件的触点开关 K两端， 用于吸收开断的电磁干扰。  The RCD resistance-capacitance absorption circuit is composed of a resistor R1, a diode D1, and a capacitor C1. After the resistor R1 is connected in parallel with the diode D1, it is connected in series with the capacitor C1 and connected to the contact switch K of the controllable switching device to absorb the electromagnetic interference of the breaking.
本发明的工作原理是： 系统断电后， 通过控制回路中可控开关类器件的触点开关 K的通 断以及借助功率放电电阻 R来实现直流母线电容 C的快速放电。工作电压范围在 0V至 2KV， 其主要功能： 系统断电后 ， 实现直流母线电容的快速放电， 从而实现直流母线电容所储存 的能量在 15分钟内低至 0.2mJ以下。  The working principle of the invention is as follows: After the system is powered off, the rapid discharge of the DC bus capacitor C is realized by the switching of the contact switch K of the controllable switching device in the control loop and by the power discharge resistor R. The working voltage ranges from 0V to 2KV. Its main function: After the system is powered off, the DC bus capacitor is quickly discharged, so that the energy stored in the DC bus capacitor can be as low as 0.2mJ in 15 minutes.

Claims

权 利 要 求 书 Claim
1、 防爆变流器直流母线快速放电电路， 其特征在于， 包括控制电源、 可控开关类器件、 功率放电电阻、 RCD 阻容吸收回路， 控制电源与可控开关类器件的控制端相连接， 功率放 电电阻与可控开关类器件的触点开关串联后并接于需要放电的含大电容支撑的直流母线极 板的正负两端； RCD阻容吸收回路并接于可控开关类器件触点开关的两端。 1. Explosion-proof converter DC bus fast discharge circuit, which is characterized in that it comprises a control power supply, a controllable switch device, a power discharge resistor, an RCD RC absorption circuit, and a control power supply connected to a control end of the controllable switch device. The power discharge resistor is connected in series with the contact switch of the controllable switch device, and is connected to the positive and negative ends of the DC bus bar plate with large capacitance support that needs to be discharged; the RCD RC absorption circuit is connected to the controllable switch device. Point the ends of the switch.
2、 根据权利要求 1所述的防爆变流器直流母线快速放电电路， 其特征在于， 所述的可 控开关类器件为继电器、 接触器、 或晶闸管。  2. The explosion-proof converter DC bus fast discharge circuit according to claim 1, wherein the controllable switch device is a relay, a contactor, or a thyristor.
3、 根据权利要求 1或 2所述的防爆变流器直流母线快速放电电路， 其特征在于， 所述 防爆变流器直流母线快速放电电路的放电时间满足煤炭安全规程规定， 设备在 15分钟内将 储能电容的能量放至 0.2mJ以下。  3. The DC bus rapid discharge circuit of the explosion-proof converter according to claim 1 or 2, wherein the discharge time of the DC bus rapid discharge circuit of the explosion-proof converter meets the requirements of the coal safety regulations, and the device is within 15 minutes. Put the energy of the storage capacitor below 0.2mJ.
PCT/CN2012/071509 2011-03-16 2012-02-23 Fast discharging circuit for direct-current bus of anti-explosive converter WO2012122882A1 (en)

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Application Number Priority Date Filing Date Title
CN2011100637533A CN102130449A (en) 2011-03-16 2011-03-16 Direct current bus quick discharge circuit of explosion-proof converter
CN201110063753.3 2011-03-16

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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102130449A (en) * 2011-03-16 2011-07-20 辽宁荣信防爆电气技术有限公司 Direct current bus quick discharge circuit of explosion-proof converter
JP2012231556A (en) * 2011-04-25 2012-11-22 Aisin Aw Co Ltd Discharge control circuit
CN102629753B (en) * 2012-04-06 2014-12-31 东南电梯股份有限公司 Externally hung capacitor discharging device special for explosion-proof elevator frequency converter
CN103312127B (en) * 2013-06-21 2015-04-08 天津华宁电子有限公司 Quick discharging and indicating device for explosion-proof frequency converter for mines
CN114221422B (en) * 2022-02-18 2022-07-15 宁德时代新能源科技股份有限公司 Battery pack charging system, control method, control device, battery pack charging unit, and storage medium

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843533A (en) * 1986-01-15 1989-06-27 Square D Company Transient ride-through AC inverter
CN1980517A (en) * 2005-12-02 2007-06-13 超人集团有限公司 High-voltage residual-electricity automatic quick discharging circuit
CN102130449A (en) * 2011-03-16 2011-07-20 辽宁荣信防爆电气技术有限公司 Direct current bus quick discharge circuit of explosion-proof converter
CN201985522U (en) * 2011-03-16 2011-09-21 辽宁荣信防爆电气技术有限公司 DC bus rapid discharge circuit for anti-explosion current transformer

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2462612Y (en) * 2000-12-25 2001-11-28 福州大学 Flexible buffering converter with power feeding characteristic
US7463473B2 (en) * 2007-04-18 2008-12-09 Honeywell International, Inc. Resonance field discharge
CN101281225B (en) * 2008-05-15 2010-12-29 国网电力科学研究院 Special high-tension current inductor transient characteristics tester
JP5339965B2 (en) * 2009-03-02 2013-11-13 株式会社アルバック AC power supply for sputtering equipment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4843533A (en) * 1986-01-15 1989-06-27 Square D Company Transient ride-through AC inverter
CN1980517A (en) * 2005-12-02 2007-06-13 超人集团有限公司 High-voltage residual-electricity automatic quick discharging circuit
CN102130449A (en) * 2011-03-16 2011-07-20 辽宁荣信防爆电气技术有限公司 Direct current bus quick discharge circuit of explosion-proof converter
CN201985522U (en) * 2011-03-16 2011-09-21 辽宁荣信防爆电气技术有限公司 DC bus rapid discharge circuit for anti-explosion current transformer

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
CHEN XIANGFU ET AL.: "IGBT Absorber", JOURNAL OF SHIJIAZHUANG RAILWAY INSTITUTE, vol. 10, September 1997 (1997-09-01), pages 101 - 104 *

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