IGBT (insulated gate bipolar transistor) driver, signal processing method, motor control system and vehicle

A driving signal and driver technology, applied in the direction of control driving, vehicle components, electric vehicles, etc., can solve problems such as complex processing circuits, and achieve the effect of reducing circuit components, increasing safety and reliability, and reducing PCB area.

Active Publication Date: 2011-06-01
BYD CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention adopts the input signal processing circuit with CPLD as the core, and overcomes the problem that the processing circuit is too complicated to be composed of separate logic devices
[0005] However, the circuit improvement of the above-mentioned driver only involves the improvement of a single driver, and currently in many applications, it involves the simultaneous use of multiple IGBTs, such as figure 1 As shown, the simultaneous

Method used

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  • IGBT (insulated gate bipolar transistor) driver, signal processing method, motor control system and vehicle
  • IGBT (insulated gate bipolar transistor) driver, signal processing method, motor control system and vehicle
  • IGBT (insulated gate bipolar transistor) driver, signal processing method, motor control system and vehicle

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Embodiment Construction

[0023] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0024] see figure 2 , figure 2 Describes an IGBT driver taking a three-phase bridge circuit as an example. The IGBT driver includes an IGBT drive signal input circuit, a drive signal isolation circuit, and a multi-IGBT output circuit connected in sequence; the IGBT drive signal generated by the IGBT drive signal input circuit , applied to the IGBT output circuit through the driving signal isolation circuit, so as to drive each IGBT in the multi-IGBT output circuit for signal output.

[0025] Among them, the multi-IGBT output circuit takes a three-phase bridge circuit as an example. In the three-phase bridge circuit, the upper bridge and lower bridge of the three phases A, B, and C have their own output signal processing channels, power modules and faults. detection unit.

[0026] In the front stage of the three-phase bridge c...

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Abstract

The invention discloses an IGBT (insulated gate bipolar transistor) driver, a signal processing method, a motor control system and a vehicle. The IGBT driver comprises an IGBT driving signal input circuit, a driving signal isolating circuit and a multi-IGBT output circuit which are connected in sequence, wherein the IGBT driving signals generated by the IGBT driving signal input circuit are addedto the multi-IGBT output circuit via the driving signal isolating circuit so as to drive each IGBT in the multi-IGBT output circuit to output signals. The IGBT driver also comprises a power source isolating circuit, wherein the power source isolating circuit comprises isolated output circuits individually corresponding to the IGBTs and a common output circuit corresponding to the whole of multiple IGBTs. The invention has the beneficial effects of achieving whole drive of multiple IGBTs and reducing the PCB area of the drive and protection circuit.

Description

technical field [0001] The present invention relates to IGBT driving, and specifically relates to an IGBT driver, a signal processing method, a motor control system and a vehicle. Background technique [0002] The function of the IGBT (Insulated Gate Bipolar Transistor, insulated gate bipolar transistor) drive circuit is to convert the switching signal from the microcontroller into a drive signal with sufficient power to ensure that the IGBT is turned on and off reliably. At the same time, the IGBT drive circuit also provides safe electrical isolation for the voltage between the microcontroller and the power transistors. In addition, in order to ensure that the IGBT is correctly and effectively protected when an overcurrent or short circuit fault occurs, the protection function is generally integrated into the drive circuit. Therefore, the performance of the IGBT driver is directly related to the reliability of the entire inverter system. The specific performance is mainly...

Claims

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Application Information

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IPC IPC(8): H03K3/021B60L15/00
Inventor 杨广明卢文
Owner BYD CO LTD
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