【摘要】 介绍不间断电源(UPS)逆变器的基本原理、系统构成及特点,分析一种用于UPS中单相电源逆变器的新的控制策略———引入电压反馈误差代替传统的输出电容电流反馈.该控制方法除了具有闭环反馈控制方法的特点外,还具有输出波形质量好、动态响应速度快、没有任何误操作和拒动作的优点.实验结果表明该控制策略的有效性.更多还原

【Abstract】 The authors introduce in detail the basic concept of uninterruptible power supply(UPS), the system component and its features.The authors also analyze a new control strategy with capacitor voltage error feedback for the single-phase voltage source UPS inverter. In this control scheme, only the capacitor voltage needs to be sensed as a control variable. Except for the basic features of feedback control strategy, the scheme offers many features for the UPS applications such as lower harmonics component, fast dynamic response, errorless operation, and non-refusal action. Experiment results show that this control strategy is effective.更多还原