Gate driving circuit board and gate driving unit and method

Abstract

The invention relates to a gate driving circuit board. The gate driving circuit board is used for driving and controlling a high-power IGBT (insulated gate bipolar transistor and comprises a CPLD (complex programmable logic device) master control chip, a primary low-voltage PCB (printed circuit board), a secondary high-voltage PCB (printed circuit board), an isolation driving transformer and a high-voltage dividing PCB. A gate driving unit in the gate driving circuit board comprises a power source module, a high-voltage dividing module, a short circuit protecting module, a fault display module, a fault feedback module, a self-checking and self-recovery module and an optical fiber starting module. The gate driving circuit board, the gate driving unit and a gate driving method provide update alternatives and optional schemes for same-specification GDU-DYTP 140 A which is commonly used in the past. Compared with imported products, the gate driving circuit board, the gate driving unit and the gate driving method reduce the cost, improve the efficiency and embody significant advantages through excellent performance and excellent service.

Description

technical field

[0001] The invention relates to a traction system, in particular to a gate drive circuit board, a gate drive unit and a driving method for controlling and monitoring the state of an IGBT in the traction system. Background technique

[0002] In the traction system, the control of VVVF inverter and chopping is mostly completed by the on-off of the high-power transistor module IGBT, so the IGBT plays a key role in this system. Efficient control and monitoring of the state of the IGBT must become the most critical part of the entire traction system.

[0003] Gate Drive Unit (GDU for short), a programmable printed circuit board used to drive and control high-power IGBT transistors, is especially widely used in traction control. In the past 10 years, domestic and foreign motor trains, subways and other vehicles have basically used mainstream traction control companies such as BOMBARDIER, SIEMENS, ALSTOM, etc. Their mature technology, stable performance and far-rea...

Examples

Embodiment Construction

[0030] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0031] like figure 1 As shown, a gate drive circuit board is used to drive and control high-power IGBT transistors, including a CPLD main control chip 5, a primary low-voltage PCB1, a secondary high-voltage PCB3, an isolation drive transformer 2, and a high-voltage divider PCB4. The PCB1 and the secondary high voltage PCB3 are connected through an isolation drive transformer 2, the CPLD main control chip 5 and the high voltage divider PCB4 are fixed on the secondary high voltage PCB3, the high voltage divider PCB4 adopts the base material S1141, and the primary low voltage The PCB1 is provided with a power interface 6, and the secondary high-voltage PCB3 is p...

technical field

[0001] The invention relates to a traction system, in particular to a gate drive circuit board, a gate drive unit and a driving method for controlling and monitoring the state of an IGBT in the traction system. Background technique

[0002] In the traction system, the control of VVVF inverter and chopping is mostly completed by the on-off of the high-power transistor module IGBT, so the IGBT plays a key role in this system. Efficient control and monitoring of the state of the IGBT must become the most critical part of the entire traction system.

[0003] Gate Drive Unit (GDU for short), a programmable printed circuit board used to drive and control high-power IGBT transistors, is especially widely used in traction control. In the past 10 years, domestic and foreign motor trains, subways and other vehicles have basically used mainstream traction control companies such as BOMBARDIER, SIEMENS, ALSTOM, etc. Their mature technology, stable performance and far-rea...

Examples

Embodiment Construction

[0030] The present invention is described in further detail now in conjunction with accompanying drawing. These drawings are all simplified schematic diagrams, which only illustrate the basic structure of the present invention in a schematic manner, so they only show the configurations related to the present invention.

[0031] like figure 1 As shown, a gate drive circuit board is used to drive and control high-power IGBT transistors, including a CPLD main control chip 5, a primary low-voltage PCB1, a secondary high-voltage PCB3, an isolation drive transformer 2, and a high-voltage divider PCB4. The PCB1 and the secondary high voltage PCB3 are connected through an isolation drive transformer 2, the CPLD main control chip 5 and the high voltage divider PCB4 are fixed on the secondary high voltage PCB3, the high voltage divider PCB4 adopts the base material S1141, and the primary low voltage The PCB1 is provided with a power interface 6, and the secondary high-voltage PCB3 is p...

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