| 无交流电压传感器的PWM整流器的直接功率控制 |
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| 引用本文： | 赵葵银,杨青,唐勇奇. 无交流电压传感器的PWM整流器的直接功率控制[J]. 广东输电与变电技术, 2008, 0(3): 6-8 |
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| 作者姓名： | 赵葵银 杨青 唐勇奇 |
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| 作者单位： | 湖南工程学院 |
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| 摘 要： | 直接功率控制(DPC)动态响应比电压定向控制(VOC)要快,提出了一种无交流电压传感器的三相电压型PWM整流器基于虚拟电网磁链的直接功率控制策略.由于通过估计虚拟磁链来计算功率,因此可省略网侧电压传感器,该控制结构为直流输出电压外环,功率控制内环节.仿真结果表明,系统可达到单位功率因数,电流畸变小,具有良好的动静态性能,方案切实可行.
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| 关 键 词： | PWM整流器 直接功率控制 无传感器 单位功率因数 |
Direct Power Control of Three-phase PWM Rectifier without AC Sensor |
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| Zhao Kuiyin,Yang Qing,Tang Yongqi. Direct Power Control of Three-phase PWM Rectifier without AC Sensor[J]. Guangdong Power Transmission Technology, 2008, 0(3): 6-8 |
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| Authors: | Zhao Kuiyin Yang Qing Tang Yongqi |
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| Affiliation: | Zhao Kuiyin Yang Qing Tang Yongqi Hunan Institute of Engineering |
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| Abstract: | The dynamic performance of direct power control(DPC)is better than the voltage oriented control.Based on direct power control tactics of magnetism link in dummy power grid,three-phase PWM rectifier without AC sensor is proposed.By estimation of dummy magnetism link to calculate power,so the voltage sensors could be omitted in grid side.The control system has Closed-loop voltage controller in outer loop and closed-loop power controller inner loop.Results of simulation verify that the system can guarantees unity power factor,less current aberrance,it has good dynamic and static performances as well as.This scheme is feasible. |
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| Keywords: | PWM rectifier Direct power control Without sensor Unity power factor |
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