Electric vehicle permanent magnet DC brushless motor controller and control method

A permanent magnet DC and brushless motor technology, applied in the field of power electronics, can solve problems such as inflexibility, and achieve the effects of simple hardware structure, improved efficiency, and low cost

Active Publication Date: 2017-08-22
HUBEI UNIV OF AUTOMOTIVE TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, electric motorcycle controllers are mainly divided into two types: one uses an application-specific integrated circuit, which can reduce costs and improve device reliability, but is not flexible enough

Method used

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  • Electric vehicle permanent magnet DC brushless motor controller and control method
  • Electric vehicle permanent magnet DC brushless motor controller and control method
  • Electric vehicle permanent magnet DC brushless motor controller and control method

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Experimental program
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Embodiment Construction

[0049] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0050] The motor controller mainly realizes the following functions: perform logic synthesis on various input signals, and provide various control signals for the drive circuit; generate PWM pulse width modulation signals with corresponding duty ratios, and adjust the speed of the motor; realize motor self-control by changing the driving sequence. Lock; realize overcurrent, undervoltage, overvoltage and other fault protection functions. On the premise of ensuring the normal operation of the electric vehicle, the efficiency of the motor and battery is improved and energy is saved.

[0051] 1. System structure

[0052] 1.1 Block diagram of the control system

[0053] The block diagram of the brushless DC motor control system, such as figure 1 Shown:

[0054] (1) Control unit

[0055]The main function is t...

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PUM

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Abstract

The invention discloses an electric vehicle permanent magnet DC brushless motor controller and a control method. The electric vehicle permanent magnet DC brushless motor controller comprises a control unit, a power driving unit, an inverter unit and BLDCM, a position detection unit and a signal input unit; subjects various input signals to logic synthesis in order to provide various control signals for a driving circuit; generates a PWM signal with a corresponding duty cycle in order to adjust the rotating speed of a motor, realizes motor self-locking by changing a driving timing sequence; and achieves overcurrent, undervoltage, and overvoltage fault protection functions. While guaranteeing the normal operation of an electric vehicle, the electric vehicle permanent magnet DC brushless motor controller improves the efficiency of the motor and a storage battery, saves energy, is simple in hardware structure, low in cost, perfect in function and high in reliability, and has high application and promotion values.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and relates to a permanent magnet DC brushless motor controller and a control method for an electric vehicle. Background technique [0002] The environmental pollution caused by the exhaust gas emitted by fuel vehicles, the noise pollution caused by driving, and the increasingly serious oil resource crisis all affect human survival, health and sustainable social development. With the rapid development of modern social economy, people pay more and more attention to environmental and energy issues, and human beings' awareness of environmental protection and health is also increasing. It is of far-reaching significance to develop electric motorcycles as a new energy alternative. [0003] An electric motorcycle consists of a car body, a motor, a battery and a controller. The motor is the heart of the electric motorcycle. At present, the motor of the electric motorcycle usually adopts a per...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02P6/17
Inventor 黄海波卢军程登良熊武赵熠聂向前
Owner HUBEI UNIV OF AUTOMOTIVE TECH
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