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ELECTRICAL DRIVES DRIVE TECHNOLOGY
Load behaviour of drives
Direct starting or starting with a soft starter of an asynchronous motor under load (E2.5.4.2)
The first experiments perform investigations of the behaviour of an asynchronous motor 230/400 V with direct start and direct rotation in the network. Starting the resistors contradicts the current efficiency guidelines. Thyristor-controlled soft starters have been developed for these motors, which can reduce motor voltage without a loss of power.
Objectives
Mains feedback with direct start with and without load
Mains feedback with direct rotation with and without load
Mechanical load of the driven working machine
Start with soft starters
Optimisation of the soft starter
Measurements are performed by the Machine Test CASSY
* additionally recommended
The pictured experiment stand is not included in this equipment. It can be added on request for an extra charge.
* additionally recommended
The pictured experiment stand is not included in this equipment. It can be added on request for an extra charge.
Electrical Drives Drive Technology
Load behaviour of drives
E2.5.4.3
Starting of large flywheel masses with slip-ring motor
The heavy start is left to the slip-ring rotors. The starting current can be reduced to the nominal current by switching through the resistors in the rotor circuit. In this experiment, the manual rotor starter is available for the heavy start.
Objectives
Mains feedback with heavy start
Mechanical load of the driven working machine
Optimisation of a start control
Energy requirement for direct start of an asynchronous motor
Energy requirement for soft start of an asynchronous motor
