期刊名称：International Journal of Soft Computing & Engineering
电子版ISSN：2231-2307
出版年度：2014
卷号：4
期号：1
页码：9-14
出版社：International Journal of Soft Computing & Engineering
摘要：The steps of process of generated PWM are implemented by using a microcontroller 89c51 and using personal computer (PC). In this project the unipolar modulation technique is presented to overcome many problems. The generated pulses are fed to six pulses at bridge inverter consist of six (MOSFET) transistors. The fundamental operation of PWM is depending upon mathematical relationships between the voltage and the frequency (V/ F) constant value, this relationship gives low harmonics that takes place the modulation process. The control signal of PWM inverters is generated by comparing a reference sinusoidal waveform and triangular waveform of modulating signal. The dc link is constant value, and modulation index is variable according to the varying output voltage of the inverter.
