Voltage Control of Photovoltaic Generator in Combination With Series Reactor
Voltage Control of Photovoltaic Generator in Combination With Series Reactor
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DOI：
10.1109/tste.2011.2148181
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发表时间：
2011-10-01
影响因子：
8.8
通讯作者：
Ito, Hiroo
中科院分区：
文献类型：
--
作者：
Kakimoto, Naoto;Piao, Qin-Yun;Ito, Hiroo
本文研究了光伏发电机的电压控制。小型光伏发电机通常连接到阻抗大多为阻性的供电线路。因此，很难通过改变功率因数来抵消光伏发电引起的电压升高。本文首次提出在一条供电线路中插入串联电抗器。考虑了它的价值和作用。其次，提出了采用恒压控制和单位功率因数控制相结合的方法来降低线损。单位功率因数控制通常运行，但如果电压超过运行范围，则启动恒压控制。绘制了两个控制框图，推导了控制切换规则。给出了部分实验结果，并与仿真结果进行了比较，验证了该方法的有效性。
This paper examines voltage control of photovoltaic (PV) generators. Small PV generators are generally connected to service lines whose impedances are mostly resistive. Accordingly, it is hard to cancel voltage rise due to PV generation by changing power factor. This paper first proposes to insert a series reactor in a service line. Its value and effect are considered. Second, a combination of constant voltage control with unity power factor control is proposed to reduce line loss. The unity power factor control usually operates, but if the voltage exceeds an operating range, the constant voltage control starts. Two control block diagrams are drawn and rules for switching controls are derived. Some experimental results are demonstrated and compared with simulation results to verify its effectiveness.