Harmonics compensation with constant DC-capacitor voltage-control-based strategy of smart charger for electric vehicles in single-phase three-wire distribution feeders under distorted source voltage and load currents conditions
Harmonics compensation with constant DC-capacitor voltage-control-based strategy of smart charger for electric vehicles in single-phase three-wire distribution feeders under distorted source voltage and load currents conditions
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源电压和负载电流畸变条件下单相三线配电馈线电动汽车智能充电机基于恒直流电容电压控制策略的谐波补偿
DOI：
10.1109/ecce.2017.8096547
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发表时间：
2017
期刊：
影响因子：
--
通讯作者：
and Masayuki Okamoto
中科院分区：
文献类型：
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作者：
Fuka Ikeda;Kei Nishikawa;Yuki Okamoto;Hiroaki Yamada;Toshihiko Tanaka;and Masayuki Okamoto
本文讨论了基于直流电容恒压控制（CDCVC）的电动汽车智能充电器在单相三线配电馈线中在源电压和负载电流畸变条件下的谐波补偿问题。详细讨论了源电压和负载电流畸变条件下基于cdcvc的谐波补偿策略的基本原理。瞬时功率流入三支脉宽调制整流器（作为SC），表明基于cdcvc的策略以统一的功率因数实现了平衡和正弦的源电流。利用PSIM软件进行了数字计算机仿真，验证了基于cdcvc的谐波补偿策略的有效性和实用性。仿真结果表明，在电动汽车电池充电和放电过程中，在极侧配电变压器二次侧均可获得功率因数为一的平衡正弦源电流，补偿了基本无功电流、不平衡有功电流和谐波电流。仿真结果还表明，基于cdcvc的SC策略能够实现源侧有功功率与负载侧有功功率的平衡。
This paper discusses the harmonics compensation of the constant dc-capacitor voltage-control (CDCVC)-based strategy of smart charger (SC) for electric vehicles (EVs) in single-phase three-wire distribution feeders (SPTWDFs) under the distorted source voltage and load currents conditions. The basic principle of the CDCVC-based harmonics compensation strategy under the distorted source voltage and load currents conditions is discussed in detail. The instantaneous power flowing into the three-leg pulse-width modulated (PWM) rectifier, which acts the SC, shows that the CDCVC-based strategy achieves balanced and sinusoidal source currents with a unity power factor. A digital computer simulation is implemented to confirm the validity and high practicability of the CDCVC-based harmonics compensation strategy using PSIM software. Simulation results demonstrate that balanced and sinusoidal source currents with a unity power factor in SPTWDFs are obtained on the secondary side of the pole-mounted distribution transformer during both the battery-charging and battery-discharging operations in EVs, compensating the fundamental reactive, unbalanced active, and harmonic currents. Simulation results also demonstrate that the CDCVC-based strategy of the SC balances the source-side active power with the load-side active power.