【摘要】 介绍了采用PWM整流电路的不间断电源的系统结构 ,分析了PWM整流电路工作原理和控制方法 ,在此基础上 ,研制了一台 30kVA不间断电源样机。实验结果表明 ,采用PWM整流电路的不间断电源具有注入电网的谐波电流小、输入功率因数接近 1等优点 ,是一种很有发展前途的不间断电源。更多还原

【Abstract】 The system configure of a UPS using high frequency PWM rectifier is introduced, and the operation principle of PWM rectifier and its control method are analyzed. A 30kVA UPS prototype is manufactured according to them. The experiment results indicate that the UPS using high frequency PWM rectifier has the characteristics of low harmonic current and high input power factor ,and has a good future.更多还原