The electric charging technology of electric vehicles has obtained increasingly extensive concerns by virtue of its potential powerful advantages. This paper respectively designs the software and hardware of the wireless charging system of electric vehicles, and then sets up the physical circuit and prototype to verify by the wireless charging experiment in the case of alignment and deviation of 15cm on the primary and secondary siding panel. The results show that the transmission power factor of the wireless system in the case of alignment and deviation is greater than 0.997, the highest efficiency from the power grid to the load is as high as 90%, and the wireless charging system operates stably.
Abstract. In recent years, the installed capacity of wind-driven power is increasing continuously in China, but the main measure for long-distance transmission with wind power integration now is series capacitive compensation due to the inverse distribution of wind energy resources and load center in China. However, similar to the thermal generator set, the sub-synchronous oscillation phenomenon may also occur in the wind generation set when the power is transmitted via the fixed series compensated line or HVDC system.This article will discuss how to suppress similar problems in the large-scale wind farms using SVG according to the experience of some Chinese power plants to suppress the sub-synchronous resonance using SVC and SVG in the past two years.
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