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High-power IGBT drive protection circuit applied to wind power generation

A technology for driving protection circuits and driving circuits, applied in emergency protection circuit devices, wind power generation, output power conversion devices, etc., can solve the problems of long order cycle and high price, achieve safe and reliable driving, reduce costs, reduce Effect of component and circuit complexity

Inactive Publication Date: 2011-07-13
北京科诺伟业科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Foreign IGBT drive products are not only expensive but also have a long order cycle

Method used

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  • High-power IGBT drive protection circuit applied to wind power generation
  • High-power IGBT drive protection circuit applied to wind power generation
  • High-power IGBT drive protection circuit applied to wind power generation

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Embodiment Construction

[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0022] Such as figure 1 As shown, the present invention is mainly composed of a power supply circuit 1 , a drive circuit 2 and an overcurrent protection circuit 3 . The circuit composed of these three parts controls the normal on-off of IGBT4 and the protection of IGBT4 under the condition of over-current. The power supply circuit 1 outputs the positive and negative bias voltage required for turning on and off the IGBT4 and the power required for the operation of other components. The drive circuit 2 receives a control signal from the outside, and the power supply circuit 1 provides positive and negative bias voltages. The drive circuit 2 outputs a drive signal to the gate of the IGBT4 to control the IGBT4 to be turned on and off. The overcurrent protection circuit 3 is connected to the collector and the emitter of the IGBT4, and judges wheth...

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PUM

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Abstract

The invention discloses a high-power insulated gate bipolar translator (IGBT) drive protection circuit applied to wind power generation, which comprises a power circuit (1), a driving circuit (2) and an overcurrent protection circuit (3), wherein the power circuit (1) is connected with the driving circuit (2) and the overcurrent protection circuit (3) and outputs positive and negative bias voltage to connect and disconnect the IGBT (4); the driving circuit (2) outputs a driving signal to the grid of the IGBT (4) and controls the connection and disconnection of the IGBT (4); and the overcurrent protection circuit (3) is connected with a collector and an emitter of the IGBT (4), judges whether the IGBT (4) is overcurrent by detecting voltage between the collector and the emitter, controls adriving point of the driving circuit under the overcurrent condition, controls the disconnection of the IGBT (4), and transmits a fault signal through a pulse transformer in the power circuit (1).

Description

technical field [0001] The invention relates to a high-power IGBT drive protection circuit, in particular to a high-power IGBT drive protection circuit used in a converter of a wind power generation system. Background technique [0002] Insulated gate bipolar transistor (Insulated gate bipolar transistor, IGBT) is widely used in power electronic devices due to its advantages of voltage control, large input impedance, low driving power, simple control circuit, low switching loss, fast on-off speed and high operating frequency. widely used. However, IGBT, like other power electronic devices, its application also depends on circuit conditions and switching environment. Therefore, the driving and protection circuit of IGBT is the difficulty and focus of circuit design, and is the key joint for the operation of the whole device. [0003] Wind energy, as a clean and non-polluting renewable energy with large-scale development and utilization prospects, has been widely valued by c...

Claims

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Application Information

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IPC IPC(8): H02M1/08H02H7/20
CPCY02E10/76
Inventor 林资旭赵懿
Owner 北京科诺伟业科技股份有限公司
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