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For unipolar PWM switching, assume a positive load current (io > 0). Which combinations of switches and diodes could be conducting during the intervals in which the output voltage is zero (v.-0)? Identify all cases and indicate the values of vAN and VBN for each case.

For unipolar PWM switching, assume a positive load current (io > 0). Which combinations of switches and diodes could be conducting during the intervals in which the output voltage is zero (v.-0)? Identify all cases and indicate the values of vAN and VBN for each case.

Introductory Circuit Analysis (13th Edition)
Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
Section: Chapter Questions
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2. In the ideal full bridge DC-DC converter shown in Figure 1, the input voltage is Va=250V and the switching frequency is f=100kHz. The bridge is controlled to provide an average output voltage Vo-200V.
Transcribed Image Text:2. In the ideal full bridge DC-DC converter shown in Figure 1, the input voltage is Va=250V and the switching frequency is f=100kHz. The bridge is controlled to provide an average output voltage Vo-200V.
c) For unipolar PWM switching, assume a positive load current (io > 0). Which combinations of switches and diodes could be conducting during the intervals in which the output voltage is zero (vo=0)? Identify all cases and indicate the values of vAN and VBN for each case. ia TB+ DB+ + TA+ DA+ i, Va Vo B TA- TB- DB- DA- N Figure 1. Ideal full bridge inverter
Transcribed Image Text:c) For unipolar PWM switching, assume a positive load current (io > 0). Which combinations of switches and diodes could be conducting during the intervals in which the output voltage is zero (vo=0)? Identify all cases and indicate the values of vAN and VBN for each case. ia TB+ DB+ + TA+ DA+ i, Va Vo B TA- TB- DB- DA- N Figure 1. Ideal full bridge inverter
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