基于超级电容器储能系统的统一电能质量调节器分析研究

2011 4th International Conference on Power Electronics Systems and Applications Pub Date : 2011-06-08 DOI:10.1109/PESA.2011.5982933

Zhou Hailiang, Wan Jianru, Yuan Chen-hu, Li Shuchao

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引用次数: 5

摘要

为了扩大统一电能质量调节器(UPQC)的补偿能力，抑制电力调节时的电网电流波动，提出了一种改进的UPQC拓扑结构。超级电容器具有功率密度高、静电容量大、循环寿命长等优点，与双向DC/DC变换器组合，与DC-link并联组成储能系统，保持直流电压恒定，也可作为备用UPS使用。基于状态空间法建立了dq坐标系下调制器的低频数学模型，并采用非锁相环补偿检测方法。并给出了电压电流补偿的控制策略和超级电容器的能量管理方案。该结构为UPQC提供了一种新的拟合方式，仿真结果表明了该结构的可行性。

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Analytical research on unified power quality conditioner based on super capacitors energy storage system

To extend the compensation ability of unified power quality conditioner (UPQC) and suppress the grid current fluctuation at the time of power regulation, a kind of improved UPQC topological structure is proposed. With advantages of high power density, large electrostatic capacity and long cycle life, super capacitors are combined with bidirectional DC/DC converter to compose the energy storage system in parallel with DC-link to keep DC voltage constant and to be used also as a spare UPS. Low frequency mathematical model of the conditioner under dq coordinates based on state-space method is built and non-PLL compensation detecting method is applied. In addition, both the control strategy of voltage and current compensation and energy management schemes of super capacitors are given. This structure provides a new fitting way for UPQC and simulation results show clearly the feasibility.

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2011 4th International Conference on Power Electronics Systems and Applications

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