摘 要水泵远程监控
本文主要介绍了利用正弦脉宽调制技术对永磁同步电动机进行恒压频比开环调速的控制器功率设计。正弦脉宽调制技术是常用的一种脉宽调制技术，用一系列脉冲宽度按正弦规律变化的脉冲代替正弦波。本文介绍了基于面积等效原理，采用查表法，利用MSP430单片机生成正弦脉宽调制（SPWM）波的方法。在功率电路中，以半桥驱动器IR2103s为驱动芯片，驱动N沟道场效应晶体管IRF540N构成逆变桥，将直流电逆变为交流电通入三相正弦永磁同步电动机。在调速中，采用分段同步调制技术对电机进行调速。在调试过程中，应用直流电动机H型主电路可逆脉宽调速的原理对原有的控制器功率电路的性能进行调试测试。 关 键 词：正弦脉宽调制；永磁同步电动机；MSP430单片机；分段同步调制
ABSTRACT
This paper described the open-loop power controller design for permanent magnet synchronous motor by using sinusoidal pulse width modulation technique. Sinusoidal pulse
width modulation technique is commonly used as a kind of pulse width modulation technology, with a series of pulsesandroid智能电视 instead of the sine wave and the width of the pulses are changing as sinusoidal楔形塞尺. Introduction was made to the method of sine pulse width modulation (SPWM) wave generated by table searching, which is based on area equivalence principle. In the power circuit, the half-bridge driver chip IR2103s was used 伞齿轮传动to drive N-channel field effect transistor IRF540N which constituted the inverter bridge so that the current fed three-phase sinusoidal permanent magnet synchronous motor. The sub-synchronous modulation technique was used to regulate the motor speed. During the commissioning process, the performance test of the original controller power circuit was with H-type main circuit DC motor reversible PWM speed control principle.
KEY WORDS: Sine pulse width modulation; Permanent magnet synchronous motor; MSP430 single chip; Sub-synchronous modulation technique
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