Question

For the SCR motor speed controller shown in Figure 11.57, sketch the waveforms for the gate current and the motor current as a function of time for firing angles of $30^{\circ}$ and $160^{\circ}$.

   For the SCR motor speed controller shown in Figure 11.57, sketch the waveforms for the gate current and the motor current as a function of time for firing angles of $30^{\circ}$ and $160^{\circ}$.

Essentials of Electrical and Computer Engineering

Essentials of Electrical and Computer Engineering

David V. Kerns, Jr.,… 1st Edition

Chapter 11, Problem 63

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Step 1

The SCR is triggered by a gate current at a specific firing angle, which controls the amount of power delivered to the motor. The firing angle (α) determines when in the AC cycle the SCR is turned on. Show more…

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For the SCR motor speed controller shown in Figure 11.57, sketch the waveforms for the gate current and the motor current as a function of time for firing angles of $30^{\circ}$ and $160^{\circ}$.

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