FPDN medium power drive inverters
FPDN medium power inverters are power and electronics devices made in IGBT transistor technology with vector or scalar control mode, designed to power asynchronous motors and frequency speed control with speed measurement it the encoder. They can work in control systems used in drive technology.
Due to the option of parallel operation it is possible to connect outputs of several inverters to increase power or build of systems operating in redundancy. The inverters, depending on their versions, may be equipped with an input rectifier, DC connection line, their own battery, and the switch of power source in the rectifier input.
INVERTERS FUNCTIONALITY AND FEATURES DEPENDING ON THE WAY OF STEERING
SCALAR STEERING (U/F=CONST)
- Speed control, the opportunity to put the speed from the outside
- Reverse operation
- Maintenance of starting time, the time of relapse, dynamic speed changes
- Ability to work with frequencies above 50 Hz within the range acceptable for machines according to IEC 60034-1
- Ability to control the size inflicted as subordinate (pressure, flow, liquid level, etc.).
- Working with passive filters (between the inverter and the motor)
- Compensation of voltage drop across the stator resistance for low speeds
FOC VECTOR CONTROL (FIELD ORIENTED CONTROL)
- Accurate, fast and decoupled control of flux and torque machine
- Rated torque over a wide rpm range
- Used in drives with high requirements of regulatory speed with quick-load
- Work with encoder (position sensor shaft)
CORE SET-UPS OF INVERTERS
- A. Inverter powered from DC line
- B. Inverter with rectifier diode
- C. Inverter with controlled rectifier (may inhibit the return of power to the grid, four quadrants mode)