FRENIC4400 Series Medium-to-large capacity DC link inverters (weight: ≈ Kg)
Features
Three-level PWM inverter
Using three-level pulse-width modulation (PWM) control with output voltage at 800 V AC, we have achieved a single unit rated capacity of 1200 kVA, and have also drastically reduced the output current harmonics.
Adoption of IGBT
We have adopted a Insulated Gate Bipolar Transistor (IGBT) device configuration for a faster control response, lower loss and more simplified inverter control circuit.
FRENIC4400 Series Medium-to-large capacity DC link inverters
Features
Three-level PWM inverter
Using three-level pulse-width modulation (PWM) control with output voltage at 800 V AC, we have achieved a single unit rated capacity of 1200 kVA, and have also drastically reduced the output current harmonics.
Adoption of IGBT
We have adopted a Insulated Gate Bipolar Transistor (IGBT) device configuration for a faster control response, lower loss and more simplified inverter control circuit.
Outstanding control performance
? High-speed control response
A fast response equal to or greater than a DC motor is achieved by driving with a serialized, fully enclosed squirrel-cage induction motor using Fuji Electric's own unique transvector control method.
? High-precision control
Digital control using a microprocessor and digital signal processor enables highly accurate control that is unaffected by temperature or aging changes.
Speed control: ±0.01%
Torque control: ±5%
? Wide range of speed control
Total digital control enables speed control in a wide range.
1?1000
? Weak-field control
Using control that constantly monitors magnetic flux makes it possible to ensure smooth high-speed operation by weak-field control.
? High-performance control (Option)
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.