DSC-Based Generation of Sinusoidal PWM Signals with the Least Number of Variables for Single-, Two- and Three-Phase Inverters.

Document Type : Research Studies

Authors

1 Electrical Engineering and Computer Control Department., College of Engineering & Text., AAST., Alexandria., Egypt.

2 Electrical Engineering and Computer Control Department, College of Engineering & Text., AAST., Alexandria., Egypt.

Abstract

Inverters are the backbone of many applications such as adjustable speed drives (ASD), uninterruptible power supplies (UPS) and active power filters (APF). Although they have traditionally been controlled with analog circuits, digital control of inverters is now preferred. This paper covers theoretical and experimental aspects related to the implementation of a Digital Signal Controller (DSC) based true Sinusoidal Pulse Width (SPWM) signals with the minimum number of variables. The technique is applied for single, two- and three-phase inverters covering both bipolar and unipolar modes of operation. A simulation analysis is also carried out, then the resultant experimental and simulated waveforms were verified, slowing the proposed algorithm advantages of so need for external analog circuits, no storing of wave patterns, flexible adaptation with any inverter number of liaises, and only single variable is manipulated, that is the fundamental frequency (fm).
 

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