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Title: A novel single-phase voltage sag restorer with diode-clamped multilevel bridge
Authors: Ding, K
Cheng, KWE 
Xue, X
Divakar, BP
Wang, SX
Xu, C
Wang, DH
Keywords: Voltage sag
Power interruption
Power system
Issue Date: 2009
Publisher: Power Electronics Research Centre, The Hong Kong Polytechnic University
Source: PESA 2009 : International Conference on Power Electronic Systems and Applications : 20th-22nd May 2009, p. [1-6] How to cite?
Abstract: A novel single-phase voltage sag restorer with diode-clamped multilevel bridge is presented. In the proposed circuit, traditional two-level half bridge inverter is replaced by multilevel diode-clamped inverter, in which the dc-bus voltage is split into several levels by series-connected bulk capacitors. Although the multilevel circuit has more component count than the two-level circuit it is more suitable for high voltage applications. The restorer is bypassed under normal operating conditions and is connected to the load depending upon voltage sag detection. The switches of the inverter are controlled by PWM signals. In the paper the operation of the multilevel circuit is simulated in SABER to study the operating capability of the multilevel inverter. A comparative study between the traditional two-level circuit and the proposed multilevel circuit is provided to highlight the performance of the multilevel circuit.
ISBN: 978-988-17471-3-6
Rights: Copyright © The Hong Kong Polytechnic University 2009.
Appears in Collections:Conference Paper

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