FRENIC4400 Series Medium-to-large capacity DC link inverters

Drive and Factory Automation | AC Drives (Medium Voltage)

The Frenic 4400 Series is a Three-level PWM Inverter. Using three-level pulse-width modulation (PWM) control with output voltage at 800 V AC, a single unit rated capacity of 1200 kVA is achieved and a drastic reduction in the output current harmonics. An Insulated Gate Bipolar Transistor (IGBT) device configuration ensures faster control response, lower power loss and a simplified inverter control circuit. It allows precision control ranging from + or -0.01% to a torque control of + or -5%. Weak field control that constantly monitors magnetic flux makes it possible to ensure smooth high-speed operations. In addition, optional features such as observer control (impact drop compensation, shaft torsional vibration suppression), speed control autotuning, and plant control software (mechanical loss setting, torque forcing fixed position stop control) are available to be built in.

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