Abstract
Permanent magnet synchronous motors are the main power output components of electric vehicles. Once a failure occurs, it will affect the vehicle’s power, stability, and safety. While as a complex field-circuit coupling system composed of machine-electric-magnetic-thermal, the permanent magnet synchronous motor of electric vehicle has various operating conditions and complicated condition environment. There are various forms of failure, and the signs of failure are crossed or overlapped. Randomness, secondary, concurrency, and communication characteristics make it difficult to diagnose faults. Based on the research of a list of related references, this article reviews the methods of intelligent fault diagnosis for electric vehicle permanent magnet synchronous motors. The research status and development trend of fault diagnosis are analyzed. It provides theoretical basis for motor fault diagnosis and health management in multi-variable working conditions and multi-physics environment.
Highlights
Faced with the shortage of energy and environmental pollution, the development and use of new energy vehicles has become an important way to ensure China’s energy security and transform low-carbon economy. ‘‘Made in China 2025’’ and ‘‘Technology Roadmap for Energy Saving and New Energy Vehicles’’ point out that new energy vehicles will gradually become mainstream products of automobiles, and the automobile industry will initially realize electrification transformation in the 15 years
Compared with other machinery, the permanent magnet synchronous motor has the characteristics of large power density, complicated operating conditions, narrow installation space, and poor heat dissipation environment
The results showed that auxiliary classifier to generate the anti-network (ACGAN) could generate a large amount of reliable data
Summary
Faced with the shortage of energy and environmental pollution, the development and use of new energy vehicles has become an important way to ensure China’s energy security and transform low-carbon economy. ‘‘Made in China 2025’’ and ‘‘Technology Roadmap for Energy Saving and New Energy Vehicles’’ point out that new energy vehicles will gradually become mainstream products of automobiles, and the automobile industry will initially realize electrification transformation in the 15 years. Permanent magnet synchronous motor has the advantages of high efficiency, small volume, high power density, and wide speed regulation range It has a wide range of applications in electric vehicles. Compared with other machinery, the permanent magnet synchronous motor has the characteristics of large power density, complicated operating conditions, narrow installation space, and poor heat dissipation environment. Faults such as rotor eccentricity, permanent magnet loss, phase loss operation, and winding interturn short circuit may be more likely occur.[4] Once a fault occurs, it will affect the power, stability, and safety of the vehicle. Studying the fault mechanism and diagnosis method of permanent magnet synchronous motor under multi-variable conditions and complex environment has important scientific significance and application value for improving the safety, reliability, and economy of electric vehicles
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