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HAIT Journal of Science and Engineering B Volume 2, Issues 3-4, pp. 426-451 © 2005 Holon Academic Institute of Technology | ||||
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A new dynamic discrete model of DC-DC PWM converters
Boris Axelrod, Yefim Berkovich*, and Adrian Ioinovici
Department of Electrical and Electronics Engineering, | Holon Academic Institute of Technology, 52 Golomb Str., Holon 58102, Israel *Corresponding author: berkovich@hait.ac.il Received 31 May 2005, accepted 20 July 2005
| A discrete dynamic models of open- and closed-loop DC-DC PWM buck- and boost-converters are discussed. The discrete model, as compared with a continuous one, has the following advantages: it provides more exact voltage and current values in view of their pulsating character, and is more adequate for the analysis of converters with digital control devices. The discrete model is obtained by s- and z-transformations of the basic equations set of the converter over a switching cycle. The theoretical results are confirmed by SPICE and Simulink simulation results and agree with the experimental results on a laboratory prototype.
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