Self-Excited Shunt DC Motor Calculator

Calculate key parameters for a self-excited shunt DC motor.

The motor is modeled using:
Field Current: \( I_f = \frac{V}{R_f} \)
Effective Flux: \( \phi = k_f \times I_f \)
Back EMF: \( E_b = V – I_a R_a \)
Motor Speed: \( \omega = \frac{E_b}{k \phi} \)
Developed Torque: \( T = k \phi I_a \)

* Enter values in SI units.

Step 1: Enter Motor Parameters

Supply Voltage, \( V \) (V):

Example: 220 V

Shunt Field Resistance, \( R_f \) (Ω):

Example: 1000 Ω

Armature Resistance, \( R_a \) (Ω):

Example: 0.5 Ω

Armature Current, \( I_a \) (A):

Example: 10 A

Motor Constant, \( k \) (V/(rad/s·Wb)):

Example: 0.05 V/(rad/s·Wb)

Flux Constant, \( k_f \) (Wb/A):

Example: 0.0005 Wb/A

Step 1: Enter Motor Parameters

Calculated Motor Parameters