Problem 4.4: A 200-hp, three-phase, 60-Hz, six-pole, 1150-rpm, 0.90-pf induction motor operates with a VFD connected to 480-V lines. The VFD design has CSI fed from a dc link. If the motor needs to runs at half the rated speed, determine (a) the rectifier firing delay angle and (b) the VFD output voltage at the motor terminals.

Q: A separately excited DC motor rated at 200 V, 900 rpm, 160 A, has an armature resistance of 0.065 ,…

A: We have been given an separately excited DC motor, Rated Voltage = 200 V Speed (N) = 900 rpm Current…

Q: A 6060-HzHz induction motor is needed to drive a load at approximately 840rpm. a) Determine the…

A: Note:- Both parts a and b are same,so solving only one.

Q: What are the key design considerations that need to be taken into account while designing a Flyback…

A: When designing a Flyback Converter or a Push-Pull Converter for a specific electrical power…

Q: A 3-phase 6-pulse converter is operated from a three-phase delta- connected 230 V, 50 Hz supply to…

A:

Speed control of motor

Speed control by DC motor-speed controller is required to realize variable speed drive. Whenever a motor drives a particular load, it is called drive, and variable speed drive refers to a load requiring variable speed. All this is obtained by a DC motor speed controller.