A control method and device for permanently magnetic brushless motor

A technology of permanent magnet brushless motor and control method, applied in the direction of single motor speed/torque control, current controller, electronic commutator, etc. The effect of real-time and reliability
CN1964179AInactive Publication Date: 2007-05-16SHANGHAI HAOKONG INFORMATION TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SHANGHAI HAOKONG INFORMATION TECH
Publication Date
2007-05-16
Estimated Expiration
Not applicable · inactive patent

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Abstract

The disclosed control method for permanent-magnet brushless motor comprises: using a current function table to convert torque signal from controller into a given current signal; setting the output duty ratio of the given current and feedback current after passing a current regulator for PWM control; using a synchronous PWM signal generator to determine PWM sequence and action time according to all of the duty ratio and current conversion advance angle and current HALL signal for the weak magnetic control. This invention is high real-time and reliable, and can achieve system requirement on stability and dynamic regulation.
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Description

Technical field:

[0001] The invention relates to the technical field of electric vehicles, in particular to a permanent magnet brushless motor control method and device suitable for electric vehicles. Background technique:

[0002] Cars are one of the most important means of transportation in the world, but the dwindling of oil resources and the pollution of fuel vehicles to the environment have become urgent problems to be solved in automotive applications; the research and development of non-polluting, low-noise electric vehicles has become a global trend Already on the rise, the replacement of fuel vehicles by electric vehicles is the development direction of the automobile industry in the 21st century.

[0003] Electric vehicles put forward higher and more complex requirements for their power devices than usual: frequent start / stop, fast speed up / down, high torque output when climbing at low speeds, low torque output during high-speed economical driving, and high energy ...

Claims

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