近年来，光伏发电技术有了广泛的应用，随着我国新能源法的颁布，光伏发电系统在我国拥将有更广阔的发展空间。为了将太阳能电池组件产生的直流电或者蓄电池释放的直流电转化为负载需要的交流电，逆变电源成为光伏发电系统的重要组成部分，其性能对光伏系统的应用产生较大影响。 本文采用“推挽电路+高频升压+全桥逆变”的逆变电源设计方案，有助于降低系统体积并提高系统效率。整个设计分为硬件和软件两部分，其中硬件分为直流升压环节和逆变环节。在直流升压环节，采用电压电流双反馈，可以避免高频变压器磁偏饱和问题，同时增加了系统稳定性和动态响应速度，控制器使用电流型控制芯片UC3846。文中还详细讨论了高频变压器的设计，滤波元器件参数选择等。在逆变环节，本文采用IPM集成功率模块，简化了驱动电路设计。由于IPM自带欠压保护、短路保护功能，增加了系统抗干扰能力。控制芯片采用价格便宜、性能优越的51系列单片机AT89C51，结合单相SPWM生成芯片SA838和A/D转换芯片ADC0809生成SPWM波并监控系统状态。在软件设计中，采用PI控制算法计算控制调制幅度值，控制调节开关管的导通和关断时间发生变化，使输出电压稳定在220V。 最后，论文给出了调试与实验结果，验证了本文所采用的逆变思想的可实现性，且控制电路简单，结构紧凑，在一定程度上降低了成本，提高了可靠性。

In recent years, photovoltaic power technology has widespread application, along with our country new energy law enacted. Photovoltaic power system will have broader development space in our county. The inverter supply is highly concerned as one of crucial parts functioned in the PV system. The fundamental function of the inverter supply is designed to transform DC from solar or battery module into AC for the requisitions of loads. Therefore, an inverter by using the “push-pull circuit+high frequency trnasformer+single phase full bridge inverter” design proposal is developed, which help to reduce system volume and increase system efficiency. The entire system consists of hardware and software designed, hardware divides into DC-DC part and DC-AC part. In DC-DC design part, this article uses the voltage feedback and current feedback, avoids the high-frequency transformer magnetic bias saturated question, at the same time increases the system stability and the dynamic speed of response. The controller is UC3846 current mode control chip. This paper also discusses the high-frequency transformer design, the filter components parameters choices in detail. In DC-AC design part the Integrated Power Module is used, which can simplify the drive circuit design. The system antijmaming ability is increased because IPM has under-voltgae protection and short circuit protection built-in. The control chip is inexpensive, superior peorfmrnace 51 series controller AT89C51, combining with single-phase SPWM producer and A/D convertor ADC0809 produces theSPWM wave and monitors system condition. In the aspect of software design, the calculation of controlling amplitude modulation value is fulfilled with the PI control algorithm. Specifically, the on/off shifting time of regulating switch is manipulated associated with the requirement of output voltage stabilization at 220V. Finally, the debug process and researching results are systematically presented and the feasibility of invert strategy is successfully verified as well. Hence, it is proved that the cost of photovoltaic power generation is reduced significantly; furthermore, the reliability is reinforced by the scientifically designed circuits and structures.