【摘要】 本文阐述了变流器负载实验中的能量回馈装置的设计及参数测试,该系统主要由直流电源、多路SPWM调制、H桥驱动、AC/DC变流器、MSP430单片机系统、LCD12864显示等功能电路组成。在电路系统设计中,能量回馈装置的电源由直流方式供电,变流器进行加负载试验时,逆变器将进行DC-AC转换,且输出50Hz、25V±0.25V、2A的单相正弦交流电;其输出通过连接单元与整流电路相连,整流器实现AC-DC转换,并将信号反馈至能量回馈装置的电源输入端口,与供电电源一起给装置电路供电,从而达到电路系统的节能目的。更多还原

【Abstract】 The paper describes the design and parameter test of the energy feedback device in the load experiment of converter. The system is mainly composed of DC power supply, multi-channel SPWM modulation,H-bridge drive, AC/DC converter, MSP430 single-chip computer system, LCD12864 display and other functional circuits. In the design of circuit system, the power supply of energy feedback device is supplied by DC mode. When the converter carries out load test, the DC-AC conversion will be carried out, and the single-phase sinusoidal AC of 50 Hz, 25 V, 2 A will be output. Its output is connected with the rectifier circuit through the connection unit, the rectifier realizes AC-DC conversion, and the signal is fed back to the input end of the device,together with the power supply. Power is supplied to the circuit so that the energy-saving purpose of the circuit system can be realized through the energy feedback device.更多还原