Low-fluctuation permanent magnetic rotor of electromobile motor

A technology for electric vehicles and permanent magnet rotors, applied in electric vehicles, motors, electric components, etc., can solve the problems of reduced stator slot area, increased motor manufacturing cost, reduced output, etc., to reduce core loss, reduce torque fluctuations, The effect of reducing mechanical vibration
CN105871097AActive Publication Date: 2016-08-17SHANGHAI CHUANYE ELECTRIC MACHINE
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI CHUANYE ELECTRIC MACHINE
Publication Date
2016-08-17

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Abstract

The invention provides a low-fluctuation permanent magnetic rotor of an electromobile motor, and relates to the technical field of motors. The technical problem of reducing torque fluctuation of the motors is solved. The rotor is provided with multiple permanent magnetic units and multiple regulation holes which are in one-to-one correspondence with all the permanent magnetic units; each permanent magnetic unit comprises V-shaped permanent magnetic slots formed in the rotor and two pieces of magnetic steel embedded in the permanent magnetic slots, and each regulation hole is located between the two pieces of the magnetic steel of the corresponding permanent magnetic unit. The low-fluctuation permanent magnetic rotor is specially suitable for electromobiles to use.
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Description

technical field

[0001] The invention relates to motor technology, in particular to a low-fluctuation permanent magnet rotor technology of an electric vehicle motor. Background technique

[0002] Electric vehicles are an important way to solve energy crisis and environmental pollution. The driving motor for electric vehicles restricts the research and development and industrialization process of electric vehicles in China. Especially in the high-efficiency built-in permanent magnet synchronous motor suitable for electric vehicles, there are defects such as low power density, narrow high-speed constant power range, large torque fluctuation, low overload capacity and poor reliability, which make it difficult to meet the requirements. The driving motor for electric vehicles restricts the research and development and industrialization process of electric vehicles in China.

[0003] Cogging torque (also known as reluctance torque) is a fatal flaw in the speed control system of a...

Claims

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