The JN APF 30A~150A series active filters are three-level, high-power density power electronic products independently developed by Jinneng Power Technology Co., Ltd., with fully independent intellectual property rights applied to suppress power harmonics and dynamic reactive power compensation. The product technology has reached the leading level in China, and the product series includes specifications of 30A, 50A, 75A, 100A, and 150A; Equipped with harmonic compensation, reactive power compensation, and three-phase imbalance compensation functions, it can be flexibly configured as a single or mixed mode compensation method, and can be widely applied to improve the power quality of 0.4KV power supply systems.