| 引用本文: | 胡存刚,邓娜,张云雷,王群京,罗方林.三电平有源中点钳位型微网储能变流器直流侧中点电压优化控制策略[J].控制理论与应用,2017,34(8):1092~1103.[点击复制] |
| HU Cun-gang,Deng Na,Zhang Yun-lei,Wang Qun-jing,Luo Fang-lin.Optimal control strategy of neutral-point potential for three-level active neutral-point-clamped microgrid energy storage converter[J].Control Theory and Technology,2017,34(8):1092~1103.[点击复制] |
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| 三电平有源中点钳位型微网储能变流器直流侧中点电压优化控制策略 |
| Optimal control strategy of neutral-point potential for three-level active neutral-point-clamped microgrid energy storage converter |
| 摘要点击 2627 全文点击 2793 投稿时间：2016-05-12 修订日期：2016-12-30 |
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| DOI编号 10.7641/CTA.2017.60317 |
| 2017,34(8):1092-1103 |
| 中文关键词 微网储能 变流器 有源中点钳位 中点电压平衡 特定谐波消除 |
| 英文关键词 microgrid energy storage power converters active neutral point clamped neutral-point potential balancing selective harmonic elimination |
| 基金项目 国家自然科学基金项目(51307002), 安徽省高校自然科学研究重大项目(KJ2016SD02)资助. |
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| 中文摘要 |
| 对三电平有源中点钳位型微网储能变流器的直流侧中点电压平衡优化控制策略进行了研究. 由于三电平
半周期对称特定谐波消除脉宽调制方法(selected harmonic elimination pulse width modulation, SHEPWM)方程具有
无数组解, 且每组解对应的开关状态矢量不同. 研究了特定谐波消除脉宽调制方法方程不同的解对应的开关状态矢
量及其对中点电压的影响. 提出在每个周期动态选择合适的解使中点电压趋于平衡的控制策略. 该控制策略在消除
特定低次谐波的同时, 有效的控制了直流侧中点电压波动, 因此提高了微网储能变流器并网输出电能质量和降低了
对输出滤波器的设计要求. 最后搭建了三电平微网储能变流器仿真模型和实验平台对所提出的控制策略进行验证,
实验结果表明了该控制策略的有效性. |
| 英文摘要 |
| An optimal control strategy of the neutral point potential (NP) balancing for the three-level active neutral
point clamped (3L-ANPC) micro grid energy storage converter is proposed in this paper. Due to the three-level half-wave
symmetric selected harmonic elimination pulse width modulation (SHEPWM) equation has multiple solutions, and the
corresponding switch state vectors of different solutions are different. The switching state vectors of the SHEPWM equation
and their influences on the NP are studied. The NP balancing can be effectively controlled by choosing appropriate solutions
in every fundamental period. The proposed control strategy can eliminate specific low order harmonics and also effectively
control the fluctuation of NP. Therefore, the grid-connected output power quality is improved and the requirement of the
output filter is reduced. Finally, the simulation model and experimental platform of three-level active neutral point clamped
micro grid energy storage converter are built to verify the proposed control strategy. The simulation and experimental
results are provided to verify the effectiveness of the proposed control strategy. |