Title:
ELECTRIC-POWER SUPPLYING DEVICE
Document Type and Number:
WIPO Patent Application WO/2010/150828
Kind Code:
A1
Abstract:
An electric-power supplying device is provided with a first power-supply device and a second power-supply unit that output DC electric power to a DC-supply line, and a controlling means. The first power-supply device conducts a constant-voltage control, using a commercial power-supply. The second power-supply unit is provided with a second power-supply device that conducts ramp control, wherein the output voltage is decreased monotonously as the output current increases, and the above-mentioned output voltage is increased monotonously as the above-mentioned output current decreases. The above-mentioned controlling means outputs command values, when a measurement value (the value of the current that flows through the DC-supply line) is greater than an optimum current value (the value of the current outputted by the above-mentioned first power-supply device into the above-mentioned DC-supply line, when the conversion efficiency of the above-mentioned first power-supply device is maximum), so as to make the value of the current that the above-mentioned second power-supply unit outputs to the above-mentioned DC-supply line becomes equal to the value of the difference between the above-mentioned measurement value and the above-mentioned optimum current value. The above-mentioned second power-supply device configures the value of the above-mentioned output current to a value corresponding to the above-mentioned command value, without changing the above-mentioned output voltage, by changing the conditions of the above-mentioned ramp control.
Inventors:
KOSHIN HIROAKI (JP)
KAGAWA TAKUYA (JP)
KAGAWA TAKUYA (JP)
Application Number:
PCT/JP2010/060683
Publication Date:
December 29, 2010
Filing Date:
June 23, 2010
Export Citation:
Assignee:
PANASONIC ELEC WORKS CO LTD (JP)
KOSHIN HIROAKI (JP)
KAGAWA TAKUYA (JP)
KOSHIN HIROAKI (JP)
KAGAWA TAKUYA (JP)
International Classes:
G05F1/00; H02J1/10; H02J7/34
Foreign References:
| JP2006262549A | 2006-09-28 | |||
| JP2005224009A | 2005-08-18 | |||
| JPH0380316A | 1991-04-05 | |||
| JPH10248253A | 1998-09-14 |
Other References:
See also references of EP 2447804A4
Attorney, Agent or Firm:
NISHIKAWA, Yoshikiyo et al. (JP)
Yoshikiyo Nishikawa (JP)
Yoshikiyo Nishikawa (JP)
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