Alternative Approach to Analysis and Design of Series Resonant Converter at Steady State
| Autor: | Mohammad Ebrahimi, Sayed Ali Khajehoddin, Mohammad Daryaei |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Optimal design
Series (mathematics) Laplace transform Differential equation 020208 electrical & electronic engineering 02 engineering and technology Nonlinear system Control and Systems Engineering Control theory Duty cycle 0202 electrical engineering electronic engineering information engineering Waveform Electrical and Electronic Engineering Mathematics Voltage |
| Zdroj: | IEEE Transactions on Industrial Electronics. 66:4424-4435 |
| ISSN: | 1557-9948 0278-0046 |
| DOI: | 10.1109/tie.2018.2860536 |
| Popis: | In this paper, new steady-state analysis is proposed for a series resonant converter (SRC) that provides closed-form expressions for converter waveforms. Using the proposed analysis, explicit equations are obtained to design the converter components. It is shown that an SRC can be modeled through a nonlinear differential equation with discontinuous inputs. A Laplace-based theorem (LBT) is provided to obtain the steady-state analytic solution of the resonant converter differential equations. Using the LBT, a flowchart is proposed to analyze the converter where the nonlinearity of differential equation is removed by defining intermediate variables. The variable duty ratio SRC is analyzed using the proposed flowchart. Accurate, closed-form, and explicit equations for converter waveforms, voltage gain, current phase lag, zero voltage switching, and discontinuous conduction mode boundaries are derived. The proposed analysis is compared with conventional methods and its accuracy is validated through simulations and experimental results. Moreover, using the proposed method, a novel procedure is provided for the optimal design of the converter and is compared with conventional design approaches. |
| Databáze: | OpenAIRE |
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