rotor circuit meaning in Hindi

Examples

1. Doubly fed electric machines use the slip rings to supply external power to the rotor circuit, allowing wide-range speed control.
2. Motor speed can be changed because the torque curve of the motor is effectively modified by the amount of resistance connected to the rotor circuit.
3. First, as the rotor circuit is controlled by a power electronics converter, the induction generator is able to both import and export reactive power.
4. In wound rotor motors, rotor circuit connection through slip rings to external resistances allows change of speed-torque characteristics for acceleration control and speed control purposes.
5. Active crowbars are commonly used to protect the frequency converter in the rotor circuit of ride through the fault and quickly continue the operation even during the voltage dip.
6. By shaping the bars to change the resistance of the winding portions in the interior and outer parts of the cage, effectively a variable resistance is inserted in the rotor circuit.
7. Certain types of variable-speed drives recover slip-frequency power from the rotor circuit and feed it back to the supply, allowing wide speed range with high energy efficiency.
8. Liquid rheostats were sometimes used in large ( thousands of kilowatts / horsepower ) wound rotor motor drives, to control the rotor circuit resistance and so the speed of the motor.
9. A converter can be fed from the rotor circuit and return the slip-frequency power that would otherwise be wasted back into the power system through an inverter or separate motor-generator.
10. In a WRIM, the rotor winding is made of many turns of insulated wire and is connected to slip rings on the motor shaft . An external resistor or other control devices can be connected in the rotor circuit.