| 基于DPWM1的无差拍解耦控制的三相并网逆变器 |
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| 引用本文： | 杨勇,阮毅,吴国祥,赵景波. 基于DPWM1的无差拍解耦控制的三相并网逆变器[J]. 电工技术学报, 2010, 25(10) |
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| 作者姓名： | 杨勇 阮毅 吴国祥 赵景波 |
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| 作者单位： | 苏州大学城市轨道交通学院,苏州,215021;上海大学机电工程与自动化学院,上海,200072;南通大学,南通,226019 |
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| 基金项目： | 台达环境与教育基金会《电力电子科教发展计划》资助项目(DRES2007002) |
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| 摘 要： | 针对三相并网逆变器的特点,提出了一种新的基于不连续PWM调制的无差拍解耦控制策略。和传统不加补偿的无差拍控制器相比,新的无差拍控制器在相同的采样频率下可以减少输出电流脉动和畸变,改善了三相并网逆变器的性能。分析了不同不连续PWM的特点,根据三相并网逆变器的特点,DPWM1方式被采用。采用电网电压定向矢量控制和无差拍控制,实现了三相并网逆变器的d轴电流和q轴电流的解耦控制,使d轴电流控制三相并网逆变器的有功功率,q轴电流控制三相并网逆变器的无功功率。加了控制延时补偿的无差拍控制器,具备非常快速的动态响应能力,真正实现一拍达到给定值。实验结果验证了该方案的可行性和正确性。
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| 关 键 词： | 不连续PWM 无差拍 电网电压定向 解耦控制 |
Deadbeat Decoupling Control of Three-Phase Grid-Connected Inverters Based on DPWM1 |
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| Yang Yong Ruan Yi Wu Guoxiang Zhao Jingbo. Deadbeat Decoupling Control of Three-Phase Grid-Connected Inverters Based on DPWM1[J]. Transactions of China Electrotechnical Society, 2010, 25(10) |
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| Authors: | Yang Yong Ruan Yi Wu Guoxiang Zhao Jingbo |
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| Affiliation: | Yang Yong1 Ruan Yi2 Wu Guoxiang3 Zhao Jingbo1(1.Soochow University Suzhou 215021 China 2.Shanghai University Shanghai 200072 China 3.Nantong University Nantong 226019 China) |
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| Abstract: | The paper proposes a novel deadbeat decoupling control strategy based on discontinuous PWM(DPWM) according to the characteristics of three-phase grid-connected inverters.The new deadbeat controller can reduce the ripple and distortion of output currents at the same sampling frequency compared with traditional deadbeat controller without control time delay compensation,which will improve the performance of the three-phase grid-connected inverter.Different discontinuous PWM are analyzed and the mode of discon... |
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| Keywords: | Discontinuous PWM deadbeat grid voltage orientation decoupling control |
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