Elliptical restoration based single-phase dynamic voltage restorer for source power factor correction
作者： Jian Ye , Hoay Beng Gooi , Benfei Wang , Yuanzheng Li , Yun Liu
DOI: 10.1016/J.EPSR.2018.10.011
关键词: Voltage 、 Phase (waves) 、 Control theory 、 Compensation (engineering) 、 Computer science 、 Focus (optics) 、 Voltage source 、 Power factor 、 Trajectory 、 Line (electrical engineering)
摘要: Abstract The dynamic voltage restorer (DVR) can compensate the load by injecting a series in distribution line. However, conventional compensating methods only focus on and DVR itself. power factor correction (PFC) at source side has seldom been considered. This paper aims correcting (PF) using an elliptical restoration based method via single-phase (DVR). Specifically, virtual impedance is used to describe active reactive components of injected voltage. centrifugal angle are utilized formulate compensation trajectory. When changes from 0° 90°, will follow Thus smooth changeover be achieved during switching. phase with current proper control It means that PFC proposed method. A laboratorial prototype validate experimental results verify unity PF maintained seamless state transition.
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