A constant DC-capacitor voltage control based strategy for current balancer in single-phase three-wire distribution systems
A constant DC-capacitor voltage control based strategy for current balancer in single-phase three-wire distribution systems
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基于恒直流电容电压控制的单相三线配电系统电流平衡器策略
DOI：
10.1109/iecon.2011.6119334
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发表时间：
2011
期刊：
影响因子：
--
通讯作者：
T.; Seong Ryong Lee
中科院分区：
文献类型：
--
作者：
Baba;Y.; Okamoto;M.; Hiraki;E.; Tanaka;T.; Seong Ryong Lee
提出了一种基于恒定直流电容电压控制的单相三线制配电网电流均衡器控制策略。该控制策略仅使用有功功率调节器中常用的恒定直流电容电压控制模块来计算补偿电流。不需要计算块来获得无功和不平衡有功分量。因此，我们为电流平衡器提供了最简单可能的控制策略。详细讨论了该控制方法的基本原理，并利用PSIM软件进行了数字计算机仿真，验证了该方法的有效性。搭建了样机实验模型并进行了试验验证。实验结果表明，在保持负载电流不平衡的情况下，杆式配电变压器二次侧可获得功率因数为1的平衡电源电流，且功率因数滞后。
This paper proposes a constant dc-capacitor voltage control based strategy for a current balancer in single-phase three-wire distribution systems. The proposed control strategy only uses the constant dc-capacitor voltage control block commonly used in active power conditioners to calculate the compensation current. No calculation blocks to obtain the reactive and unbalanced-active components are necessary. Thus, we provide the simplest possible control strategy for the current balancer. The basic principle of the proposed control method is discussed in detail then its validity is confirmed by digital computer simulation using PSIM software. A prototype experimental model is constructed and tested. Experimental results demonstrate that balanced source currents with a power factor of unity are obtained on the secondary side of a pole-mounted distribution transformer while retaining unbalanced load current conditions with a lagging power factor.