DCM forward-flyback converter integrated with a 5-order cockcroft-walton voltage multiplier: A steady-state and resonant current analysis
| Autor: | Vinicius Bernardi Fuerback, Telles Brunelli Lazzarin, Matheus Schramm Dall'Asta |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
Leakage inductance Flyback converter business.industry Buck converter 020208 electrical & electronic engineering 0211 other engineering and technologies Electrical engineering Hardware_PERFORMANCEANDRELIABILITY 02 engineering and technology law.invention Inductance Capacitor Hardware_GENERAL law Hardware_INTEGRATEDCIRCUITS 0202 electrical engineering electronic engineering information engineering Voltage multiplier Transformer business 021106 design practice & management Voltage |
| Zdroj: | 2017 Brazilian Power Electronics Conference (COBEP). |
| Popis: | This paper presents the steady state and resonant current analysis of a Forward-Flyback Voltage Multiplier operating in discontinuous conduction mode. The operation stages are approached, taking into account the resonant current. The static gain and the conditions for the operations modes are obtained. A sinusoidal approximation is proposed to represent the resonant current with respect to the number of stages, voltage multiplier capacitors and leakage inductance. The characteristics of voltage sharing among capacitors, that allows the use of small voltage components, and the high-gain with reduced turns of the transformer are verified. Bench tests were made for a 200 V/2000 V prototype, from one to five stages, highlighting the overall circuit effects for a 200 W output power. Obtained waveforms for different number of voltage multiplier stages validate the theoretical and simulated results, making this converter an alternative to isolated DC/DC systems where the output voltage must be higher than the input voltage. |
| Databáze: | OpenAIRE |
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