DC Motor Speed Control - Rushabh Vanara

DC Motor Speed Control using Chopper Circuit

Adjust the Duty Cycle slider to observe how PWM (Pulse Width Modulation) affects the average output voltage and motor speed.

0 RPM

Duty Cycle (δ): 0.50

Load Torque (T_L): 1.0 N-m

Avg Output Voltage (V_a)110 V

Back EMF (E_b)0 V

Armature Current (I_a)0 A

1. Average Armature Voltage (V a): V a = δ \times V s V a = 0.5 \times 220 = 110 V 2. Steady State Angular Speed (ω): Using formula: ω = [V a - (T L \cdotR a /K)] / [K + (B\cdotR a /K)] ω = [110 - (1.0 \cdot 1.8 / 1.1)] / [1.1 + (0.15 \cdot 1.8 / 1.1)] ω = [110 - 1.63] / [1.1 + 0.245] ω = 80.57 rad/s 3. Convert to RPM: N = (ω \times 60) / 2π N = (80.57 \times 60) / 6.28 = 769 RPM