集成了有源前端（AFE）技術(shù)，在不使用昂貴、專用的變壓器的情況下，可將電網(wǎng)側(cè)諧波降至低，并且還有四象限運行以及的額外好處。AFE提供了低諧波的特點，滿足了各種標(biāo)準(zhǔn)中對電流與電壓諧波的要求。這樣，就不需要進(jìn)行諧波分析或安裝網(wǎng)側(cè)濾波器。降低能耗為了實現(xiàn)能耗小化，AFE允許四象限運行，其將制動至電網(wǎng)。無功功率補(bǔ)償AFE也能提供無功功率補(bǔ)償。有了靜態(tài)無功補(bǔ)償，可以維持平滑的電網(wǎng)電壓特性，并避免了無功功率罰款。安裝、調(diào)試以及運行維護(hù)方便不需使用變壓器的直接電網(wǎng)連接技術(shù)，可以使安裝與調(diào)試工作更加快捷、方便。安裝一臺變頻器，運用ABB簡單的 “三進(jìn)三出”布線概念，只需斷開直接掛網(wǎng)運行的電纜，接至變頻器，然后將變頻器接到電機(jī)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