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MANAGEMENT, MODELING, AUTOMATION
Model of switch-controlled PWM structure for analysis of pulse voltage converters with arbitrary topology
S. A. Amelin, M. A. Amelina, S. V. Drozdetsky, I. V. Yakimenko National Research University “Moscow Power Engineering Institute”,
Smolensk, Russian Federation
Abstract:
The article considers the problems of analyzing DC-DC voltage converters and analyzes the advantages, disadvantages, as well as the scope of full switched and averaged continuous
models of the converters. The feasibility of using the complex of two models (full switch model
and averaged continuous model) for analyzing their operation is proved. The general approach to
the construction of continuous models of DC-DC voltage converters based on state-space averaging
method is considered. Disadvantages of the averaged models using a classic approach are shown.
The relevance of the development of universal continuous models of DC-DC converters is substantiated. The possibility of creating such models using averaged models of PWM switching structure
included in the DC-DC voltage converter is shown. Analyzed the typical structure of the switchmode power supply with feedback. An averaged model of the switching structure is proposed, basing on which continuous models of DC-DC converters with any topology can be built. The processes occurring in this switching structure in the mode of continuous and discontinuous choke current are analyzed. A method for constructing continuous models of the main types of DC-DC voltage converters based on switching structure averaged model is proposed. The adequacy of continuous models obtained by this method has been proven. The results of modeling transients on the
continuous and full switch models for inverting voltage regulator are demonstrated. The possibility
of accounting in the model of active resistances of switches and cumulative choke is shown. The
possibility of using the proposed model to obtain the open loop transfer functions is demonstrated,
in particular, the characteristics of the duty factor - output voltage. These transfer functions can be
used to synthesize control system compensating circuits of the switch-mode power supply. The
possibility of using a single generalized averaged model of the switching structure to build continuous models of converters with complex topology using both the Voltage Mode and Current Mode
is shown. This creates prerequisites for developing a universal averaged continuous model for DCDC converter based on this principle.
Keywords:
switch-mode power supply, state-space averaging, pulse-width modulator, DC-DC converter, Voltage Mode, Current Mode.
Received: 22.06.2021
Citation:
S. A. Amelin, M. A. Amelina, S. V. Drozdetsky, I. V. Yakimenko, “Model of switch-controlled PWM structure for analysis of pulse voltage converters with arbitrary topology”, Vestn. Astrakhan State Technical Univ. Ser. Management, Computer Sciences and Informatics, 2021, no. 4, 45–57
Linking options:
https://www.mathnet.ru/eng/vagtu692 https://www.mathnet.ru/eng/vagtu/y2021/i4/p45
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Abstract page: | 74 | Full-text PDF : | 103 | References: | 11 |
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