EDT 25.2-1 FREQUENCY CONVERTER DRIVES 1KW THREE PHASE

Modern frequency converters transform any given threephase robust nature and broad popularity of the three-phase standard motor have played a major role in the success enjoyed by electronic drive technology with frequency converters. The higher demands placed on drives due to rapid advances in process automation means that more and more motors are controlled by frequency converters. Thanks to needs-based open-loop speed control, today it is possible to save substantial amounts of energy in pumps and air-conditioning systems.

Training objectives:

• Putting the system into operation (computer-aided)
• Programming basic functions:
  Setting the setpoint, rotation direction, starting function, operating frequency, limiting values, nominal voltage, nominal current, nominal frequency, power factor etc.
• Investigating the operating response
• Measuring the power and rms values
• Load experiments
• Recording the speed/torque characteristic in motor operation (1/3 quadrants)
• Optimization of the U/f characteristic
• Compensation of the stator resistance
• Field weakening control
• Brake chopper operation