Patent ID: 8971058
Filing Date: 2015-03-03
Classification: H02M,Y02B

Abstract:
1. A high-efficiency high step-up ratio direct current converter with an interleaved soft-switching mechanism, comprising: a voltage-multiplier circuit comprising two isolating transformers, two main switches disposed on a primary side of the two isolating transformers, four diodes disposed on a secondary side of the two isolating transformers and four capacitors disposed on the secondary side of the two isolating transformers, configured to boost a voltage of a direct-current power to a desired voltage value; and an active clamping circuit, electrically connected to the voltage-multiplier circuit, comprising two active clamp switches and a clamp capacitor to lower a voltage surge of the two main switches so that the two main switches and the two active clamp switches can be soft switched on; wherein a step-up ratio of the direct current converter satisfies: where V