| 单相并网逆变器的定频滞环电流控制新方法 |
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| 引用本文： | 岳舟,谭甲凡.单相并网逆变器的定频滞环电流控制新方法[J].电源技术,2010,34(1). |
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| 作者姓名： | 岳舟 谭甲凡 |
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| 作者单位： | 湖南人文科技学院,通信与控制工程系,湖南,娄底,417001 |
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| 摘 要： | 传统的滞环电流控制算法具有实现简单、动态响应快、对负载参数变化不敏感、电流跟踪误差小等优点,但也存在开关频率随电流变化率变化而波动,造成网侧滤波电感设计困难,功率模块应力及开关损耗增大的不足。通过对滞环电流控制算法的原理和开关频率波动的原因进行分析,提出了基于积分法的定频算法。利用MATLAB中的Simulink工具箱,搭建了单相光伏并网系统仿真模型,仿真结果表明,这种算法在保持滞环电流控制算法优点的同时,较好实现了滞环开关频率的稳定。
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| 关 键 词： | 单相并网逆变器 定频滞环电流控制 电压空间矢量 |
New method for constant-frequency hysteresis current control of single phase grid-connected inverter |
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| YUE Zhou,TAN Jia-fan.New method for constant-frequency hysteresis current control of single phase grid-connected inverter[J].Chinese Journal of Power Sources,2010,34(1). |
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| Authors: | YUE Zhou TAN Jia-fan |
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| Affiliation: | Department of Communication and Engineering;Hunan University of Humanities and Science and Technology;Loudi Hunan 417001;China |
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| Abstract: | As it is well known, the hysteresis control is characterized by unconditioned stability, very fast response, and good accuracy. But the basic hysteresis technique exhibits also several undesirable features, such as variable switching frequency and heavy interference among the phases in case of three-phase systems with isolated neutral. By analyzing the hysteresis current control algorithm and the reasons for switching frequency fluctuations, a new algorithm of stabilizing the switching frequency based on in... |
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| Keywords: | single phase grid-connected inverter constant frequency hysteresis current control voltage space vector |
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