An electric vehicle steering motor control system and method

Abstract

The invention relates to the technical field of motor control, in particular to a steering motor control system and method for an electric vehicle. Main processor and first logic processing circuit: if the high-voltage inverter module is faultless, the high-voltage inverter module is driven to provide three-phase high-voltage power; if the high-voltage inverter module is faulty, the high-voltage inverter module is prohibited from supplying power, and the The second logic processing circuit sends the high-voltage inverter module drive enable signal, and the second logic processing circuit: after receiving the enable signal sent by the second logic processing circuit, and the low-voltage inverter module has no fault, it provides three-phase low-voltage power to the steering motor. , High voltage drive board, low voltage drive board, high voltage inverter module, low voltage inverter module. It can effectively detect various faults of the high-voltage inverter, and continue to supply power when a fault occurs, ensuring the reliability of the motor operation. The hardware logic circuit is used to realize the power supply switching, the response is fast, and the design difficulty is low.

Description

technical field [0001] The invention relates to the technical field of motor control, in particular to an electric vehicle steering motor control system and method. Background technique [0002] With the continuous development of electric vehicles, people have higher requirements for the safety of electric vehicles. The steering motor controller is the core safety component of an electric vehicle. The high-voltage power part of the existing steering motor controller has a relatively high failure rate. If the steering motor controller has a high-voltage fault, phase current fault, temperature fault, IGBT Short-circuit faults, low-voltage faults, etc., the steering motor controller does not fully detect the faults, or only stops the UVW three-phase voltage output when a fault is detected, and reports the fault to the VCU through the CAN bus, and displays the fault through the instrument. This may result in loss of the steering assistance function and the vehicle's driving dir...

AI Technical Summary

Problems solved by technology

This may result in the loss of the steering assistance function and the vehicle's driving direction may deviate, which may cause danger

Therefore, due to the lack of detection mechanism and protection mechanism of the motor controller, the life safety of the driver and passengers may be endangered.

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