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A DSP based SVPWM control for utility interactive inverters used in alternate energy systems

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3 Author(s)
W. Shireen ; Houston Univ., TX, USA ; S. Vanapalli ; H. Nene

This paper presents a DSP based algorithm to control inverters used in interfacing alternate energy systems with the electric utility. Since a constant and ripple free DC bus voltage is not ensured at the output of alternate energy sources, the main aim of the proposed algorithm is to make the output of the inverter immune to the fluctuations in the DC input voltage. In this paper a modified space vector pulse width modulation (SVPWM) technique is proposed which will maintain the quality of the AC output of the inverter, regardless of the ripple present at the inverter input. The principle is explained qualitatively and extensive experiments have been carried out to verify and validate the proposed algorithm. A 16-bit fixed-point C2000 family DSP from Texas Instruments was used as the controller to implement the proposed control algorithm.

Published in:

Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06.

Date of Conference:

19-23 March 2006