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More and more electric vehicles have been used in China, and many charging station has been built in China. Due to the reactive power loss caused by charging devices, the method to measure the power consumed by charging device is critical for power company.Based on impact loads generated by electric vehicles to the grid in fast charging mode, this paper studies the energy measurement method of electric...
This paper elaborates on the output filter of the high power shunt Active Power Filter (APF). Aimed to reduce the switching ripple produced by APF itself injecting into the power grid, a scheme applying high-pass filter capacitor branch at the grid side is proposed. Based on the model of the output filter, design principle and process of it is provided and the relevant parameters of the high-pass...
Shunt Active Power Filter (APF) is a good solution to eliminate current-type harmonics generated by nonlinear load. Challenges exist in realization of large power and high compensation precision simultaneously due to the limited capacity of semiconductor devices, thermal management, high slew rate of compensation current, low switching frequency and phase lag of digital control loop etc. This paper...
The DC-bus voltage self-regulating of Hybrid Active Power Filter (HAPF) is not only critical to compensation performance, but also to the safe operation. Traditional controller, e.g. P or PI, has disadvantages for these applications. Regarding the popular shunt HAPF with passive and active filters in serial connected, this paper presents a novel controller for the DC-bus voltage self-maintaining....
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