The utility model relates to an energy feedback type electronic load, wherein the input terminal adopts an access mode with large current and single channel, and the main circuit mainly comprises an DC/DC conversion circuit, an DC/AC inverter circuit and an AC filtering output circuit. The DC/DC conversion circuit with phase shifted full bridge circuit to control the DC input, and the DC input voltage, in order to adapt to the current input, the switching device comprising a plurality of MOSFET parallel composition; between DC/DC conversion circuit and DC/AC inverter circuit are connected through DC bus; single-phase full bridge inverter circuit to control AC output current the DC/AC inverter circuit to stabilize the DC bus voltage and AC current with unit power factor power feedback, DC/AC inverter adopts IGBT module as the power device; AC filter circuit using LC low-pass filter circuit to eliminate the harmonics of DC/AC inverter output current, improve grid power quality.
【技术实现步骤摘要】
【技术保护点】
一种电能回馈型电子负载,其特征在于,电子负载包括DC/DC转换电路、DC/AC逆变电路和交流滤波电路,其中:DC/DC转换电路的正极输入端经直流接触器(ZJ)接直流输入正极端子,DC/DC转换电路的负极输入端通过导线接直流输入负极端子;DC/DC转换电路的输出端和DC/AC逆变电路的输入端通过直流母线连接,直流支撑电容(C)跨接在直流母线正、负极之间;DC/AC逆变电路的输出端与交流滤波电路的输入端连接,交流滤波电路的输出端通过继电器(K1、K2)与交流电网连接。
【技术特征摘要】
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