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AC link bidirectional DC-DC converter, hybrid power supply system using the same and hybrid vehicle

  • US 9,166,415 B2
  • Filed: 11/22/2006
  • Issued: 10/20/2015
  • Est. Priority Date: 11/24/2005
  • Status: Expired due to Fees
First Claim
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1. An AC link bidirectional DC-DC converter having two voltage inverters, each of said voltage inverters using semiconductor switching elements, each of said semiconductor switching elements being formed by an IGBT and an antiparallel diode, the voltage inverters having DC terminals connected to each other in series in additive polarity, a plurality of AC terminals of each of the voltage inverters being connected to a transformer, the two voltage inverters being AC-linked to each other through the transformer, by being configured such that, of the two voltage inverters, AC terminals of the voltage inverter on a negative DC terminal side are connected to a primary coil of the transformer and AC terminals of the voltage inverter on a positive DC terminal side are connected to a secondary coil of the transformer, that transmits and receives an electric power between an energy accumulation device and an external power supply, wherein:

  • the energy accumulation device is connected in parallel between a positive DC terminal and a negative DC terminal of the voltage inverter on the negative DC terminal side of the AC link bidirectional DC-DC converter, andan external voltage applied between the DC terminals of the AC link bidirectional DC-DC converter is divided by the voltage inverters, said converter being used to power hybrid vehicles.

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