A PWM signal is sent to a permanent magnet DC motor through an H-bridge circuit. The PWM frequency is 100 kHz, the DC voltage source is 16 volts, and the specification of the motor is given as: voltage = 16 volts, no load speed = 1500 RPM, holding torque = 2 Nm. a. Draw the voltage signal delivered to the motor when the duty cycle is 20% and 80% (at least draw for 5 periods). Calculate the speed of DC motor when the duty cycle is 20% and 80%. Estimate the output power when the duty cycle is 20% and 80%. Assume that the motor efficiency is 100%. b. C.

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A PWM signal is sent to a permanent magnet DC motor through an H-bridge circuit. The
PWM frequency is 100 kHz, the DC voltage source is 16 volts, and the specification of
the motor is given as: voltage = 16 volts, no load speed = 1500 RPM, holding torque = 2
Nm.
a.
Draw the voltage signal delivered to the motor when the duty cycle is 20% and
80% (at least draw for 5 periods).
Calculate the speed of DC motor when the duty cycle is 20% and 80%.
b.
C.
Estimate the output power when the duty cycle is 20% and 80%. Assume that
the motor efficiency is 100%.
Transcribed Image Text:A PWM signal is sent to a permanent magnet DC motor through an H-bridge circuit. The PWM frequency is 100 kHz, the DC voltage source is 16 volts, and the specification of the motor is given as: voltage = 16 volts, no load speed = 1500 RPM, holding torque = 2 Nm. a. Draw the voltage signal delivered to the motor when the duty cycle is 20% and 80% (at least draw for 5 periods). Calculate the speed of DC motor when the duty cycle is 20% and 80%. b. C. Estimate the output power when the duty cycle is 20% and 80%. Assume that the motor efficiency is 100%.
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