Abstract

The design of hybrid electric vehicle drive motor is based on the premise of meeting the electric requirement. As the power generation and the regenerative braking are in operation state, it can not charge the battery when the normal generating voltage of motor is lower than that of the battery. In view of the problem, the hybrid electric vehicle driving motor control system is designed. In this system, the boost operation of pulse-width modulation (PWM) method of half controlled rectifier is used to improve the power voltage, as the speed is the main measure of the feedback current and voltage. The fuzzy PID control strategy can optimize the frequency and duty cycle of PWM pulse width, and then with the generating efficiency is greatly improved. The power generation principle, control strategy and software implementation are analyzed in the paper, and its rationality is verified by experiments.

Highlights

  • Hybrid electric vehicle (HEV) is the mainstream of the development of electric vehicles as it combines many advantages of the traditional fuel vehicle and pure electric vehicle [1] and the development of battery is the bottleneck issue

  • parallel hybrid electric vehicle (PHEV) ensures the coordination of the internal combustion power source and the electric power source, so it can achieve the best energy distribution

  • The control system optimizes the frequency and duty cycle of the pulse-width modulation (PWM) pulse width by a fuzzy PID control strategy

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Summary

Introduction

Hybrid electric vehicle (HEV) is the mainstream of the development of electric vehicles as it combines many advantages of the traditional fuel vehicle and pure electric vehicle [1] and the development of battery is the bottleneck issue. The investment of the parallel hybrid electric vehicle (PHEV) is much more than other forms at home and abroad [2]. The running car motor, as the electromotor and engine, is used. As the main control chip, DSP [3-4] (TMS320F2812) is the core design of the motor digital system. It is the most powerful and the strongest real-time system, and its highspeed can achieve the complex control strategy and make the cost reduction. Current detect upper computer serial communication control condition throttle reset

Power operation control analysis
Power Operation Control Strategy
Experimental results
Conclusions
Full Text
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