TY - GEN
T1 - Four quadrant voltage sag/swell compensation with interphase quasi-Z-source AC-AC topology
AU - Lei, Qin
AU - Peng, Fang Z.
PY - 2011
Y1 - 2011
N2 - This paper proposes a new type of interphase voltage sag/swell compensator based on voltage-fed quasi-Z-source ac-ac converter to implement a four quadrant voltage injection. By PWM duty-ratio control, the converter performs as a "solid-state transformers" to provide a larger range of output ac voltage with buck-boost, reversing or maintaining phase angle, reducing in-rush and harmonic current, reducing passive component ratings, and improving reliability. The injected voltage amplitude can vary in a large range and its phase angle can vary in the whole 2π range due to the circuit features. Compared to conventional parallel series back to back dynamic compensator, the quasi-Z-source converter has smaller capacitor and inductor requirement, and also smaller switch voltage and current stress. The theory analysis can be divided into three parts: basic circuit analysis; passive component stress and switch stress comparison to conventional topology; voltage sag/swell compensation strategy. Simulation and laboratory test are also carried out on a prototype to validate the theory analysis.
AB - This paper proposes a new type of interphase voltage sag/swell compensator based on voltage-fed quasi-Z-source ac-ac converter to implement a four quadrant voltage injection. By PWM duty-ratio control, the converter performs as a "solid-state transformers" to provide a larger range of output ac voltage with buck-boost, reversing or maintaining phase angle, reducing in-rush and harmonic current, reducing passive component ratings, and improving reliability. The injected voltage amplitude can vary in a large range and its phase angle can vary in the whole 2π range due to the circuit features. Compared to conventional parallel series back to back dynamic compensator, the quasi-Z-source converter has smaller capacitor and inductor requirement, and also smaller switch voltage and current stress. The theory analysis can be divided into three parts: basic circuit analysis; passive component stress and switch stress comparison to conventional topology; voltage sag/swell compensation strategy. Simulation and laboratory test are also carried out on a prototype to validate the theory analysis.
UR - http://www.scopus.com/inward/record.url?scp=79955748445&partnerID=8YFLogxK
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U2 - 10.1109/APEC.2011.5744873
DO - 10.1109/APEC.2011.5744873
M3 - Conference contribution
AN - SCOPUS:79955748445
SN - 9781424480845
T3 - Conference Proceedings - IEEE Applied Power Electronics Conference and Exposition - APEC
SP - 2013
EP - 2019
BT - 2011 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011
T2 - 26th Annual IEEE Applied Power Electronics Conference and Exposition, APEC 2011
Y2 - 6 March 2011 through 10 March 2011
ER -