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http://dx.doi.org/10.6113/JPE.2016.16.6.2350

An Improved One Cycle Control for Active Power Filters under Non-Ideal Voltage Conditions  

Wang, Lei (College of Electrical and Power Engineering, Taiyuan University of Technology)
Ren, Chunguang (College of Electrical and Power Engineering, Taiyuan University of Technology)
Yang, Yu (Shanxi Electric Power Corporation)
Han, Xiaoqing (Shanxi Key Lab of Power System Operation and Control, Taiyuan University of Technology)
Wang, Peng (Nanyang Technological University)
Publication Information
Journal of Power Electronics / v.16, no.6, 2016 , pp. 2350-2358 More about this Journal
Abstract
The one cycle control (OCC) scheme for active power filters (APFs) has shown excellent harmonic suppression and implementation simplicity. However, its real world application is limited because the non-ideal supply voltage for APFs can influence its performance so that the source currents are still distorted after compensation. This paper proposes a modified one cycle control (MOCC) scheme to improve the performance of three-phase shunt APFs under non-ideal supply voltage conditions. In this paper a detailed mathematical derivation has been presented and the key control law of the MOCC has been developed for adaption to the non-ideal supply voltages, following the control philosophy of simplicity. A relatively simple sequence filter is introduced to extract the harmonic components of supply voltages. The modified scheme can be easily implemented. The proposed control strategy has excellent performance and a 5kVA APF hardware platform has been implemented to validate the feasibility and performance of the proposed strategy.
Keywords
Active Power Filters (APFs); Non-ideal voltage; One Cycle Control (OCC);
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