NDLI: Design and implementation of inverter in dynamic voltage restorer based on Selective Harmonic Elimination PWM

Content Provider	IEEE Xplore Digital Library
Author	Yanlei Zhao
Copyright Year	2008
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Shandong Univ. of Technol., Jinan (Yanlei Zhao)
Abstract	The selective harmonic elimination PWM (SHEPWM) based on Walsh transform converts nonlinear transcendental equations in the Fourier domain to linear algebraic ones. Under appropriate initial condition, the piecewise linear relation between fundamental voltage amplitude and switching angles is obtained, so voltage regulation and harmonic elimination can be realized online. Thus, the technique highly suits to the inverter of dynamic voltage restorer (DVR). In the paper, the sameness and the difference between switch angles distribution of SHEPWM and of centroid PWM (CPWM) are summarized, and, according to the relationship between both PWM modes, a new method to solve SHE equation in Walsh domain is proposed. Based on the feature of harmonic distribution of the SHEPWM pulses, the paper presents design principle of inverter filter. The experimental result of 200 kVA DVR using SHEPWM indicates that the inverter can effectively restrain the harmonics and has good dynamic performance in all the range of output voltage.
Starting Page	2239
Ending Page	2244
File Size	593341
Page Count	6
File Format	PDF
ISBN	9787900714138
DOI	10.1109/DRPT.2008.4523783
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-04-06
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	DRPT
Subject Keyword	Pulse width modulation inverters Pulse width modulation Power harmonic filters Switches Fourier transforms Nonlinear equations Piecewise linear techniques Voltage control Difference equations Pulse inverters Walsh function Centriod PWM Dynamic Voltage Restorer Inverter Selective Harmonic Elimination PWM
Content Type	Text
Resource Type	Article

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