集成了有源前端（AFE）技术，在不使用昂贵、专用的变压器的情况下，可将电网侧谐波降至低，并且还有四象限运行以及的额外好处。AFE提供了低谐波的特点，满足了各种标准中对电流与电压谐波的要求。这样，就不需要进行谐波分析或安装网侧滤波器。降低能耗为了实现能耗小化，AFE允许四象限运行，其将制动至电网。无功功率补偿AFE也能提供无功功率补偿。有了静态无功补偿，可以维持平滑的电网电压特性，并避免了无功功率罚款。安装、调试以及运行维护方便不需使用变压器的直接电网连接技术，可以使安装与调试工作更加快捷、方便。安装一台变频器，运用ABB简单的 “三进三出”布线概念，只需断开直接挂网运行的电缆，接至变频器，然后将变频器接到电机上即可
The active front end (AFE) technology is integrated, which can minimize the harmonics on the grid side without using expensive and dedicated transformers, and has the additional benefits of four quadrant operation and reactive power compensation.
AFE provides low harmonic characteristics and meets the requirements of current and voltage harmonics in various standards. In this way, there is no need to carry out harmonic analysis or install network side filters.
Reduce energy consumption
To minimize energy consumption, AFE allows four quadrant operation, which feeds back braking energy to the grid.
Reactive power compensation
AFE can also provide reactive power compensation. With static reactive power compensation, the smooth voltage characteristics of the power grid can be maintained and the reactive power penalty can be avoided.
Convenient installation, commissioning, operation and maintenance
The direct grid connection technology without transformer can make the installation and commissioning work faster and more convenient. Install a frequency converter, using ABB's simple "three in and three out" wiring concept, just disconnect the cable that is directly connected to the network, connect it to the frequency converter, and then connect the frequency converter to the motor
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