| 无直流电压传感器的单相APFC变换器 |
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| 引用本文： | 刘霞.无直流电压传感器的单相APFC变换器[J].通信电源技术,2007,24(3):28-30. |
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| 作者姓名： | 刘霞 |
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| 作者单位： | 西安文理学院机械电子工程系,陕西,西安,710065 |
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| 基金项目： | 西安文理学院校科研和教改项目 |
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| 摘 要： | 文章对一种只检测交流输入电压而不需要检测输出直流电压的简化单相PFC变换器进行了理论分析和研究。在构建控制电路时,不需要常规PFC变换器中的输出电压传感器和输入电流传感器。PFC变换器的主电路为整流电路的直流侧接一级Boost电路。在控制电路中,使用电感L、等效负载电阻Rd等电路参数产生正弦电流波形基准,输出电压直接由控制量Kd(=Ed/Ea)来调节。通过控制,可以得到恒定的直流输出电压和与交流输入电压同相位的正弦电流波形。仿真结果证明了该变换器的可行性。
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| 关 键 词： | 交流输入电压 直流电压调节 PFC变换器 |
| 文章编号： | 1009-3664（2007）03-0028-03 |
| 收稿时间： | 2006-11-28 |
| 修稿时间： | 2006-11-28 |
DC Voltage Sensorless Single-Phase APFC Converter |
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| LIU Xia.DC Voltage Sensorless Single-Phase APFC Converter[J].Telecom Power Technologies,2007,24(3):28-30. |
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| Authors: | LIU Xia |
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| Abstract: | It theoretically analyzed and studied a simple DC voltage sensorless single APFC converter by detecting an AC line voltage in the paper. Both DC voltage and AC current sensors used in the conventional PFC converter are not required to construct the control system. The converter circuit with a boost chopper circuit in the DC side from a rectifier circuit is used as the main PFC. In the control system, the circuit parameters such as a series inductance L and equivalent load resistance value Rd are used to generate the sinusoidal current waveform. The DC voltage is directly controlled by the command input signal Kd(=Ed/Ea)for the boost chopper circuit. The sinusoidal current waveform in phase with the AC line voltage can be obtained. The feasibility of the proposed control system is verified by simulation. |
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| Keywords: | ac line voltage dc voltage regulation PFC converter |
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