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New Shoot-Through Control Methods for qZSI-Based DC/DC Converters

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4 Author(s)
Roasto, I. ; Dept. of Electr. Drives & Power Electron., Tallinn Univ. of Technol., Tallinn, Estonia ; Vinnikov, D. ; Zakis, J. ; Husev, O.

Shoot-through control methods for qZSI-based dc/dc converters are presented and studied. The major goal was to increase efficiency. A new modulation technique, pulse width modulation (PWM) with shifted shoot-through, is compared with the conventional PWM shoot-through control method. The new method reduces switching frequency of bottom side transistors and inherently features partial soft switching. Previous studies have shown that the biggest drawback of PWM control with shoot-through is unequal switching frequencies of transistors. One solution to that problem could be signal swapping that has been proposed by the authors of this paper. All control methods are first simulated and then experimentally verified on a test prototype.

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Industrial Informatics, IEEE Transactions on  (Volume:9 ,  Issue: 2 )