i. the inductance value. ii. the peak-to-peak ripple in the inductor current if operating at the rated current but the battery voltage is at its minimum

Introductory Circuit Analysis (13th Edition)
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Publisher:Robert L. Boylestad
Chapter1: Introduction
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(b)ln a large battery-storage system, the rated output voltage of a battery
string is 650V (dc) and the rated current is 1200 A. The voltage can vary
in a range from 500V to 800 V. This output voltage is boosted to 900V
(dc), as an input to an inverter that interfaces with the three-phase utility
grid. A DC-DC converter with a bi-directional power capability is used.
The switching frequency is selected to be 50 kHz, and the inductor
value is selected such that the peak-to-peak ripple in the inductor
current is less than 10% of the rated battery current, with the battery
voltage at its rated value. Calculate:
i. the inductance value.
ii. the peak-to-peak ripple in the inductor current if operating at the
rated current but the battery voltage is at its minimum.
Transcribed Image Text:(b)ln a large battery-storage system, the rated output voltage of a battery string is 650V (dc) and the rated current is 1200 A. The voltage can vary in a range from 500V to 800 V. This output voltage is boosted to 900V (dc), as an input to an inverter that interfaces with the three-phase utility grid. A DC-DC converter with a bi-directional power capability is used. The switching frequency is selected to be 50 kHz, and the inductor value is selected such that the peak-to-peak ripple in the inductor current is less than 10% of the rated battery current, with the battery voltage at its rated value. Calculate: i. the inductance value. ii. the peak-to-peak ripple in the inductor current if operating at the rated current but the battery voltage is at its minimum.
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