A Power Compensator for EV Quick Charging in Single-Phase Three-Wire System

• Main Authors: Yong-Sheng Liao, 廖永勝
• Other Authors: Tzung-Lin Lee
• Format: Others
• Language: zh-TW
• Published: 2015
• Online Access: http://ndltd.ncl.edu.tw/handle/07883589548613409427

碩士 === 國立中山大學 === 電機工程學系研究所 === 103 === The power source supplied by the utility to the homes is single-phase three-wire　system, 220V/110V, and the limiting current depends on the current-carrying capacity of wire, the most specifications can’t afford for electric vehicle (EV) quick charging in AC level-2 80A to reduce the charging time. For residents, it must raise the current-carrying capability for quick charging. For the power company, the increasing power consumption would cause the bottleneck of power supply. Thus, this thesis uses secondary battery retired from EV as energy storage equipment. Combined with single-phase three-wire system and EV quick charging, it provides the current, which can’t afford for EVs quick charging in single-phase three-wire system, by the power compensator operating. The proposed control achieves quick charging in AC level-2 80A without changing current-carrying capacity of wire. In addition, the power compensator has active filtering function. It not only can compensate the harmonic current from the non-linear load, but also balance the source current. The simulations and laboratory experimental results verify the control strategy.