Equivalent Circuit Diagram Of Induction Motor

But the drop in stator impedance value and power dissipated due to stator resistance.

Equivalent circuit diagram of induction motor. Transformer equivalent circuit is the electrical circuit representation of equations describing the behavior of transformer. The basic design and construction of a linear induction motor is similar to a three phase induction motor although it does not look like a conventional induction motorif we cut the stator of a polyphase induction motor and lay on a flat surface it forms the primary of the linear induction motor system. From the above expression of speed of main induction motor we can say that the speed in cascade operation of induction motor is equivalent to the speed of a single motor having p 1 p 2 poles. The power flow diagram of an induction motor is shown below.

Since in this scheme the torque of both main and auxiliary motors are in the same direction this method is called cumulatively cascaded. An induction motor or asynchronous motor is an ac electric motor in which the electric current in the rotor needed to produce torque is obtained by electromagnetic induction from the magnetic field of the stator winding. Theory of no load test of induction motor. Consider the per phase equivalent circuit diagram in fig.

Linear induction motor design. The impedance of magnetizing path of induction motor is large enough to obstruct flow of current. Single phase three phase ac circuits magnetic circuits. Nocelectrical machines video syllabus.

In fact equivalent circuit of any electrical device is necessary for its performance analysis and to find any scope of further design modification. Before jumping into the equivalent circuit a few concepts are useful. It is simply the circuit representation of the equation describing the performance of the device. Power flow diagram and losses of induction motor power flow diagram of induction motor explains the input given to the motor the losses occurring and the output of the motor.

The rotor can never. Introduction to electrical machines i. An induction motors rotor can be either wound type or squirrel cage type. Induction motors are asynchronous.

Induction motor per phase equivalent circuit. Therefore small current is applied to the machine due to which there is a fall in the stator impedance value and rated voltage is applied across the magnetizing branch. An induction motor can therefore be made without electrical connections to the rotor. The equivalent circuit of a transformer consists of a combination of resistance inductance capacitance voltage etc.

Equivalent circuit of a transformer the equivalent circuit diagram of any device can be quite helpful in the pre determination of the behavior of the device under the various condition of operation. The input power given to an induction motor is in the form of three phase voltage and currents. The stator magnetic field rotates at the motors synchronous speed n s. The stator part of the equivalent circuit together with the magnetising branch can be replaced by a thevenin equivalent circuit.