NDLI: Generalized active power decoupling method for H-bridge with minimum voltage and current stress

Content Provider	IEEE Xplore Digital Library
Author	Runruo Chen Sisheng Liang Peng, F.Z.
Copyright Year	2014
Description	Author affiliation: Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA (Runruo Chen; Sisheng Liang; Peng, F.Z.)
Abstract	Single-phase PWM rectifier, grid connected PV inverter system, static synchronous compensator (STATCOM) all can be implemented by an H-bridge inverter and a large electrolytic dc capacitor to absorb the ripple power pulsating at twice the line frequency (2ω ripple power). This paper proposed a generalized active power decoupling method for H-bridge with minimum voltage and current stress. By adding another phase leg to control an ac capacitor, the 2ω ripple power can be absorbed by the capacitor and theoretically 2ω ripples to the dc capacitor can be eliminated completely. The H-bridge and the addition phase leg can be analyzed together as an unbalanced three phase system. By adopting SVPWM control and choosing the optimum ac capacitance and the capacitor voltage reference, the voltage and current stress of the switches can be minimized to the same as the conventional H-bridge. The size of capacitor is reduced by 10 times compared to the conventional H-bridge system. Simulation and experimental results are shown to prove the effectiveness of the proposed active power decoupling method.
Starting Page	4421
Ending Page	4427
File Size	2185096
Page Count	7
File Format	PDF
ISBN	9781479957767
DOI	10.1109/ECCE.2014.6953726
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2014-09-14
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Capacitors Rectifiers Pulse width modulation Inverters Automatic voltage control Stress
Content Type	Text
Resource Type	Article

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