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Field Programmable Gate Array-Based Pulse-Width Modulation for Single Phase Active Power Filter

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Author(s): N. A. Rahim | Z. Islam

Journal: American Journal of Applied Sciences
ISSN 1546-9239

Volume: 6;
Issue: 9;
Start page: 1742;
Date: 2009;
Original page

Keywords: Active power filter | PWM | FPGA | power quality

ABSTRACT
Problem statement: The design and implementation of a sinusoidal Pulse-Width Modulation (PWM) generator for a single-phase hybrid power filter is presented. Approach: The PWM was developed in an Altera® Flex 10 K Field Programmable Gate Array (FPGA) and the modulation index was selected by calculating the DC bus voltage of the active filter through a digital controller, by Proportional-Integral-Derivative (PID) technique. Results: Experiment results showed the proposed active power filter topology to be capable of compensating the load current and the voltage harmonic, up to IEC limit. Conclusion: The implemented PWM generator using an FPGA required less memory usage while providing flexible PWM patterns whether same phase, lagging, or leading, the reference voltage signal.
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