Why the equivalent circuit of an induction motor is necessary?
The Equivalent Circuit of an Induction motor enables the performance characteristics which are evaluated for steady-state conditions. An induction motor is based on the principle of induction of voltages and currents. The voltage and current are induced in the rotor circuit from the stator circuit for the operation.
How do you find the equivalent circuit of an induction motor?
Calculation of Power of Equivalent Circuit
- Find Zf and Zb.
- Find stator current which is given by Stator voltage/Total circuit impedance.
- Then find the input power which is given by.
- Power Developed (Pg) is the difference between forward field power and backward power.
- The rotor copper loss is given by- slip × Pg.
What is the equivalent circuit of induction motor?
The equivalent circuit of an induction motor is similar to a transformer equivalent circuit because the energy is transferred from stator to rotor is essential as a transformer operation from primary to the secondary winding. An equivalent circuit enables the performance characteristics of the induction motor.
How does the mechanical power developed by the induction motor be represented in equivalent circuit?
The rotor e.m.f. in the equivalent circuit now depends only on the transformation ratio K (= E2/E1). Therefore; induction motor can be represented as an equivalent transformer connected to a variable-resistance load RL given by eq. The power delivered to RL represents the total mechanical power developed in the rotor.
What are the main parts of induction motor?
Parts of Induction Motors
- Stator. The stator is the stationary portion of the motor and delivers a rotating magnetic field to interact with the rotor.
- Rotor. The rotor is the central component of the motor, and is fixed to the shaft.
- Shaft. The motor shaft is fixed within the rotor, and rotates with it.
- Bearings.
- Casing.