Title:
POWER CONDITIONER AND METHOD FOR CONTROLLING SAME
Document Type and Number:
WIPO Patent Application WO/2015/141319
Kind Code:
A1
Abstract:
A power conditioner has: a first DCDC converter receiving the battery voltage of a battery unit as an input and stepping up the battery voltage; a DCAC inverter receiving the output voltage of the first DCDC converter as an input, converting the output voltage to an AC voltage in a single-phase three-wire system, and outputting the AC voltage; a DC link portion shared by the first DCDC converter and the DCAC inverter and having a configuration in which a high-side capacitor disposed on the positive side of the battery unit and a low-side capacitor disposed on the negative side of the battery unit are connected in series, with the connection point between the high-side capacitor and the low-side capacitor being directly connected to the N-phase of the single-phase three-wires; and a second DCDC converter receiving the battery voltage as an input and stepping up or stepping down the battery voltage to control the voltage across the ends of the low-side capacitor to a voltage half the voltage across the ends of the DC link portion.
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Inventors:
SHINADA YOUSUKE (JP)
Application Number:
PCT/JP2015/053295
Publication Date:
September 24, 2015
Filing Date:
February 05, 2015
Export Citation:
Assignee:
NEC CORP (JP)
International Classes:
H02M3/155; H02J3/32; H02M7/48
Foreign References:
| JPH10234185A | 1998-09-02 | |||
| JP2002199588A | 2002-07-12 | |||
| JP2001069767A | 2001-03-16 | |||
| JP2001197757A | 2001-07-19 |
Attorney, Agent or Firm:
MIYAZAKI, Teruo et al. (JP)
Akio Miyazaki (JP)
Akio Miyazaki (JP)
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