论文部分内容阅读
1.前言 在工业自动化控制发展的今天,计算机被广泛采用,同时对高性能后备电源的要求越来越高,特别在通信领域,对后备电源的输出波形失真度、稳压精度及可靠性等指标有较为严格的规定。 目前市场上常见的不间断电源有如图1a、b所示的方波输出型和正弦波输出型二种。方波输出的后备电源控制转换简单,价格也低,但是输出电压中含有大量的高次谐波,极易对仪器产生不良的影响。正弦波输出型的电源,采用SPWM调制技
1. Preface The development of industrial automation and control today, the computer is widely used, while higher and higher requirements for backup power backup, especially in the field of communications, backup power output waveform distortion, voltage regulation accuracy and reliability Indicators have more stringent requirements. The common uninterruptible power supply on the market today is the square wave output type and the sine wave output type shown in Figure 1a, b. The square wave output of the backup power control conversion is simple, the price is low, but the output voltage contains a large number of higher harmonics, easy to produce adverse effects on the instrument. Sine wave output type power supply, using SPWM modulation technology