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A series resonant dc-dc converter operates with a dc input voltage of V = 550 V. The converter supplies 30 kV to a load. The de load power varies over the range 5 kW to 25 kW. It is desired to operate the power transistors with zero-voltage switching. The maximum feasible switching frequency is 50 kHz. An isolation transformer having a 1:n turns ratio is connected in series with the tank network. The peak tank capacitor voltage should be no greater than 2000 V, referred to the primary. (а) Derive expressions for the peak tank capacitor voltage and peak tank inductor current. (b) Select values for the tank inductance, tank capacitance, and turns ratio, such that the given spec- ifications are met. Attempt to minimize the peak tank inductor current, while maximizing the worst-case minimum switching frequency.

A series resonant dc-dc converter operates with a dc input voltage of V = 550 V. The converter supplies 30 kV to a load. The de load power varies over the range 5 kW to 25 kW. It is desired to operate the power transistors with zero-voltage switching. The maximum feasible switching frequency is 50 kHz. An isolation transformer having a 1:n turns ratio is connected in series with the tank network. The peak tank capacitor voltage should be no greater than 2000 V, referred to the primary. (а) Derive expressions for the peak tank capacitor voltage and peak tank inductor current. (b) Select values for the tank inductance, tank capacitance, and turns ratio, such that the given spec- ifications are met. Attempt to minimize the peak tank inductor current, while maximizing the worst-case minimum switching frequency.

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
Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...
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A series resonant de-dc converter operates with a dc input voltage of V = 550 V. The converter supplies 30 kV to a load. The de load power varies over the range 5 kW to 25 kW. It is desired to operate the power transistors with zero-voltage switching. The maximum feasible switching frequency is 50 kHz. An isolation transformer having a 1:n turns ratio is connected in series with the tank network. The peak tank capacitor voltage should be no greater than 2000 V, referred to the primary. (a) Derive expressions for the peak tank capacitor voltage and peak tank inductor current. (b) Select values for the tank inductance, tank capacitance, and turns ratio, such that the given spec- ifications are met. Attempt to minimize the peak tank inductor current, while maximizing the worst-case minimum switching frequency.
Transcribed Image Text:A series resonant de-dc converter operates with a dc input voltage of V = 550 V. The converter supplies 30 kV to a load. The de load power varies over the range 5 kW to 25 kW. It is desired to operate the power transistors with zero-voltage switching. The maximum feasible switching frequency is 50 kHz. An isolation transformer having a 1:n turns ratio is connected in series with the tank network. The peak tank capacitor voltage should be no greater than 2000 V, referred to the primary. (a) Derive expressions for the peak tank capacitor voltage and peak tank inductor current. (b) Select values for the tank inductance, tank capacitance, and turns ratio, such that the given spec- ifications are met. Attempt to minimize the peak tank inductor current, while maximizing the worst-case minimum switching frequency.
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