| PWM整流器保持高功率因数运行的方法研究 |
| |
| 引用本文： | 郑丽君,沈亚瑞,宋建成. PWM整流器保持高功率因数运行的方法研究[J]. 工矿自动化, 2014, 0(4): 68-72 |
| |
| 作者姓名： | 郑丽君 沈亚瑞 宋建成 |
| |
| 作者单位： | 太原理工大学电气与动力工程学院;煤矿装备与安全控制山西省重点实验室;山东东营供电公司; |
| |
| 基金项目： | 山西省青年自然科学基金项目(2011021015-1);山西省科技创新重点团队资助项目(2012011001) |
| |
| 摘 要： | 针对煤矿井下电压波动严重时影响稳压电源的单位功率因数等问题,提出采用可变输出直流电压法来控制PWM整流器的直流侧电压,以保证PWM整流器处于高功率因数运行的工作状态;详细分析了直流侧电压的选取及交流侧输入电压大范围波动对交流侧输入电流及功率因数的影响,介绍了可变输出直流电压法的控制原则及软件实现。试验结果表明,在电压波动情况下,可变输出直流电压法不仅可使PWM整流器系统稳定,而且可以保持整流器的高功率因数运行状态。
|
| 关 键 词： | PWM整流器 稳压电源 高功率因数 电压波动 可变输出直流电压法 |
Research of method of maintaining high power factor for PWM rectifier |
| |
| Abstract: | In view of problem that serious voltage fluctuation underground may affect unit power factor of power supply,variable output DC voltage method was proposed to control DC side voltage of PWM rectifier,so as to ensure the PWM rectifier working with high power factor.Selection of DC side voltage and influence of fluctuating of AC side input voltage in a wide range on AC side input current and power factor were analyzed.Control principle and software implementation of variable output DC voltage method were introduced respectively.The test results show that the PWM rectifier with variable output DC voltage control method can work stably and always achieve high power factor under voltage fluctuations. |
| |
| Keywords: | PWM rectifier regulated power supply high power factor voltage fluctuation variable output DC voltage method |
| 本文献已被 CNKI 等数据库收录！ |
