基于DSP 56F801的正弦波输出DC/AC电源

DC/AC Power Supply Based on DSP 56F801 with Sinusoidal Output

介绍了一个用于UPS和可再生能源的小功率DC/AC电源的设计。该电源由高频DC/DC环节和SPWM DC/AC环节组成。由UC3846控制的DC/DC环节采用具有变压器的推挽电路.实现低压直流到高压直流的变换并克服变压器的偏磁。基于MOTOROLA的DSP芯片56F801实现DC/AC环节的SPWM信号发生、输出交流电压调节和整个电源的监测和保护。该电源具有体积小,逆变效率高,波形质量好的优点。

The design of a DC/AC sine-wave power supply, composed of a high frequency DC/DC and a SPWM DC/AC, is presented. The DC/DC that is isolated push-pull topology and controlled by an UC3846 performs low/high DC voltage transformation and avoids magnetic unbalance. The DSP chip of Motorola＇s 56F801 realizes the generation of SPWM driving signal, output AC voltage regulation, supervision and protection of the whole unit. The merits in compactness, efficiency and wavefom quality are achieved.