The losses in electric drive systems is/are
Right Answer is:
All of the above
LOSSES IN AN ELECTRICAL DRIVE SYSTEM
Energy conservation in an electrical drive is achieved by the reduction of losses in its various parts. Typical losses include the following:
- Electrical transmission losses: These losses depend on the drive power factor and harmonics in the line current.
- Conversion losses in the power modulator (or converter): The semiconductor converter usually has low conversion losses.
- Electric motor losses to convert electric power into mechanical power: These are determined by choice of the motor (quality of its design and selection of right rating) and quality of supply (voltage variations, unbalance, frequency variations, and harmonics).
- Mechanical losses:- It is part of the transmission system such as bearings, gears, clutches, and belts.
- Losses in the load: A load in a machine is required to perform a specified task such as fan, pump, and train.
- Losses caused by throttling or by other means that control material flow by absorbing or bypassing excess output.
- Mechanical transmission losses, such as friction losses to move material from one location to another. Losses in the pipeline carrying fluid are one such example.
The efficient operation of an electrical drive, with minimum consumption of energy, requires that the drive and the driven machinery (or load) operate efficiently. This calls for the careful design of both electrical and mechanical systems. Only those measures are considered here which can lead to the efficient operation of electric drive systems.