| 无电网电压传感器三电平PWM整流器研究 |
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| 引用本文： | 王峰,何至源,郑旺,刘海宁.无电网电压传感器三电平PWM整流器研究[J].电力电子技术,2012,46(1):29-31. |
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| 作者姓名： | 王峰 何至源 郑旺 刘海宁 |
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| 作者单位： | 1. 中国矿业大学,江苏徐州,221008
2. 江苏省电力传动与自动控制工程技术研究中心,江苏徐州,221116 |
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| 摘 要： | 在大功率三电平整流器应用中,为降低成本、提高性能,研究了一种无电网电压传感器三电平PWM整流器。在分析其数学模型的基础上,采用三电平SVPWM简化算法,将传统两电平电压空间矢量控制算法应用于三电平,并结合一种新颖的虚拟磁链观测器,提出了基于虚拟电网磁链定向的三电平PWM整流器矢量控制策略,在双三电平变频器系统中对其进行实验研究。实验结果表明,该三电平PWM整流器可较好地稳定直流母线电压,提高整流器功率因数,并具有良好的动静态特性。
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| 关 键 词： | 整流器 无传感器 虚拟磁链 |
Research on Three-level PWM Rectifier Without Line Voltage Sensors |
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| WANG Feng
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HE Zhi-yuan
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ZHENG Wang
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LIU Hai-ning.Research on Three-level PWM Rectifier Without Line Voltage Sensors[J].Power Electronics,2012,46(1):29-31. |
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| Authors: | WANG Feng HE Zhi-yuan ZHENG Wang LIU Hai-ning |
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| Affiliation: | 1.China University of Mining and Technology,Xuzhou 221008,China) |
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| Abstract: | In order to reduce the costs and improve the performance of three-level rectifier in the high-power applica-tions,a three-level PWM rectifier without line voltage sensors is researched.Based on the mathematical model of three-level PWM rectifier,the simplified SVPWM algorithm for three-level is adopted which applys the traditional two-level voltage space vector control algorithm,and the novel virtual flux observer is given,the virtual line flux ori-ented vector control strategy is proposed and the experiment is conducted in the dual three-level inverter system.The experimental results show the three-level PWM rectifier can improve the stability of the DC bus voltage,the power factor of rectifier and has good steady and dynamic characteristics. |
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| Keywords: | rectifier sensorless virtual flux |
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