基于STM32单片机的单相并网逆变研究

摘要

采用STM32单片机对并网逆变器进行控制。为了并网逆变器运行时，输出电流与电网电压同频同相，功率因数接近1，使用滞环控制法对输出电流进行控制。实验表明通过调整给定电流的相位，可使并网输出电流与电网电压准确同步。并网输出电流曲线在最值附近比其他地方明显要粗。性能优秀的STM32单片机非常适合用在逆变器中。%Single phase grid-connected inverter is controlled by STM32 SCM. When the inverter is connected with the Grid, in order to the frequency and the phase of the output current is as will as the Grid voltages' and the power factor is nearly 1, the output current is controlled used the hysteresis control. The result show that the accurate synchronism of the output current phase between the Grid voltage phase will appear by means of changing the phase of the set up current. The curve of the output current wave is wider obviously in the nearby maximum or minimum position than others position. It is very fit that the perfect STM32 SCM is used in the inverter.