基于单片机PWM的交流电压可控补偿器

AC Voltage Controllable Compensator Based on SCM PWM

消除电源电压波动对动力、照明等用电系统的不良影响以及对电加热炉、大规模照明系统等进行功率闭环时序控制等,均需进行电压调节。因此,研究实现大功率、高可靠性、高动态性能、低谐波、低成本、无级调压技术具有非常重要的意义。补偿式调压技术在市电电压上叠加同、反相位的正弦波补偿电压可实现电压幅值的正负调节。此处基于单片机的PWM功能,设计了一种EPWM斩波补偿式调压装置。实验结果表明该装置具有动态性能高、谐波含量低、成本低等特点,具有很高的应用价值。

In order to eliminate the adverse effects of voltage fluctuations on electric drive system, lighting and other electrical system, and control the electric heater system, large-scale lighting systems etc, all require regulating the voltage.Therefore,it＇s very important to achieve the technology of the large power,high reliability,high dynamic performance, low harmonics, low cost and no-class regulator.To plus same-phase or anti-phase sine wave compensate voltage on power supply can achieve positive and negative regulation.Based on the PWM function of single chip microcomputer, a chopper compensate EPWM device is designed.The experiments show that this device has the feature of dynamic structure, high performance, low harmonic content and so on, so it has great value in applications.