VTF880 series activ 0 e front end
关键词：
VTF880 series active front end
VTF880-RFcan be used as both a rectifier and an inverter, operating in four quadrant mode. Adopting IGBTand SPWMmode, it can control the size and phase of ACpower, and make the ACinput wave close to sine wave through various filtering and energy storage links in the front end. The power factor is adjustable positive and negative with a midpoint of 1. When the braking energy on the motor side returns through the inverter, the DCbus voltage increases, It can make the phase of the ACinput wave opposite to the power supply voltage, achieve regenerative power generation operation, and feed back the regenerative energy to the AC power grid to meet the control requirements of high-performance inverters.
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