Digital Implementation of Space Vector Pulse Width Modulation Technique Using 8-bit Microcontroller
Digital Implementation of Space Vector Pulse Width Modulation Technique Using 8-bit Microcontroller
复制标题
用8位单片机数字实现空间矢量脉宽调制技术
DOI：
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发表时间：
2013
期刊：
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通讯作者：
Marwan Badran
中科院分区：
文献类型：
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作者：
W. Faris;A. M. Tahir;Marwan Badran
几十年来，电力驱动器被用来控制感应电动机的速度。新一代的电力驱动器基于高速功率晶体管，如IGBT和MOSFET。电力驱动的主要部分是逆变器，它使用功率晶体管桥作为DC到AC转换器。由于该逆变器的输出是高频方波，因此需要高速微控制器来产生适当的开关序列。各种开关技术用于产生PWM信号，该PWM信号用于确定输出电压的幅度和频率。本文介绍了用8位单片机实现空间矢量脉宽调制（SVPWM）技术在三相逆变器中的数字化实现。该系统采用8位PIC16F877A微控制器产生SVPWM信号，触发逆变器MOSFET桥的栅极。逆变器包括一个低通LC滤波器，用于提供正弦波形输出。实验结果表明，该系统能够产生所需频率的三相正弦波信号。© IDOSI Publications，2013.
For several decades, electric drives were used to control the speed of induction motors. The new generations of electric drives are based on high speed power transistors, like IGBT and MOSFET. The main part of electric drive is the inverter which works as DC to AC converter using a power transistor bridge. Since the output of this inverter is a high frequency square wave, a high speed microcontroller is needed to produce the proper switching sequence. Various switching techniques are used to generate PWM signal which is used to determine the amplitude and the frequency of the output voltage. This paper describes the digital implementation of Space Vector Pulse Width Modulation (SVPWM) technique using 8-bit microcontroller for three-phase inverter. The proposed system uses 8-bit PIC16F877A microcontroller to generate SVPWM signal needed to trigger the gates of MOSFET bridge of the inverter. The inverter includes a low-pass LC-filter which is used to give a sine waveform output. The experimental results show the ability of the proposed system to generate a three-phase sine wave signal with desired frequency. © IDOSI Publications, 2013.