2012年2月24日 · Here we will discuss about the speed control of wound rotor induction motor using variation of rotor resistance. Traditionally, rotor resistance was varied by incorporating a variable rheostat in series with the motor’s three-phase winding. However, this method was problematic and economically unfeasible.

Rotor Resistance Control is also one of the methods by which we can control the speed of the Induction motor. The speed of the wound induction motor can be controlled by connecting an external resistance in the rotor circuit through slip rings.

2018年5月26日 · In Rotor Resistance Control method, the rotor circuit resistance is varied by connecting a variable external resistance for speed control of induction motor. This method is only applicable for slip ring or wound rotor induction motor (WRIM). As rotor winding terminals are not available in Squirrel Cage Induction Motor,

Compared to conventional Rotor Resistance Control of Induction Motor, static rotor resistance control has several advantages such as smooth and stepless control, fast response, less maintenance, compact size, simple closed-loop control and rotor resistance remains balanced between the three phases for all operating points.

resistance and controls the wound rotor induction motor speed. PSIM9.1.1 is used for the simulation purpose and validates the results in open loop as well as closed loop control of three phase induction motor.

Closed loop control for static rotor resistance control For satisfying the transient and steady state performance of induction motors, a closed loop control is normally used. The IGBT chopper circuit allows the external rotor resistance to be varied statistically and steplessly, and provides a

ABSTRACT:In this paper, we study the control algorithms of induction electromotor with wound rotor by the change of active resistance in rotor circuit. For the equations in per-units, we use nominal active values of current and voltage in stator windings.

In this topic, you study Rotor Resistance Control of Induction Motor. For an induction motor working at or near full-load slip, the torque and slip are related approximately as. For a given torque, therefore, the slip at which the motor works is proportional to the rotor resistance.

Rotor Resistance Starter in Three-Phase Induction Motor - In a rotor resistance starter, a star connected variable resistance is connected in the rotor circuit through slip-rings. The full voltage is applied to the stator windings. The connection arrangement of the rotor resistance starter is shown in the figure.

Rotor Resistance Control of Induction Motor: Speed-torque curves for Rotor Resistance Control of Induction Motor are given in Fig. 6.50. While maximum torque is independent of rotor resistance, speed at which the maximum torque