Title:
POWER CONTROL DEVICE, POWER CONTROL METHOD, AND FEED SYSTEM
Document Type and Number:
WIPO Patent Application WO/2012/046549
Kind Code:
A1
Abstract:
[Objective] To provide a power control device, power control method, and feed system which are capable of performing control so as to maintain a maximum power point of a power-generating element of a solar battery and which can avoid power loss. [Solution] The present invention has: a power path switch unit (32); a voltage conversion unit (31) for converting a voltage level which is supplied via the power path switch unit and which has been generated at a power-generating element; a characteristics measurement circuit (33) for measuring the open circuit voltage of the power-generating element to obtain the maximum power point of the power-generating element on the basis of the measured open circuit voltage; a control unit (34) which outputs to the power path switch unit a path switch signal corresponding to the comparison result between the voltage of the load-side power storage element and a switch threshold, which is generated according to the magnitude relation between the voltage of the load-side power storage element and at least the maximum power point voltage of both the open circuit voltage and the maximum power point voltage of the power-generating element; wherein the power path switch unit (32), according to the power path switch signal, forms a path for connecting the power-generating element to the voltage conversion unit to connect the output to the power storage element side, or a path for directly connecting the power-generating element to the power storage element side. [Selected Figure] FIG. 1
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Inventors:
YOKOYAMA MASAYUKI (JP)
MIYASHIRO TOMOTAKA (JP)
MIYASHIRO TOMOTAKA (JP)
Application Number:
PCT/JP2011/070942
Publication Date:
April 12, 2012
Filing Date:
September 14, 2011
Export Citation:
Assignee:
SONY CORP (JP)
YOKOYAMA MASAYUKI (JP)
MIYASHIRO TOMOTAKA (JP)
YOKOYAMA MASAYUKI (JP)
MIYASHIRO TOMOTAKA (JP)
International Classes:
G05F1/67; H02J7/35
Domestic Patent References:
| WO2008018250A1 | 2008-02-14 | |||
| WO2011062088A1 | 2011-05-26 | |||
| WO2011108412A1 | 2011-09-09 |
Foreign References:
| JP2003134690A | 2003-05-09 | |||
| JPS62154122A | 1987-07-09 | |||
| JP3795370B2 | 2006-07-12 | |||
| JPS62154122A | 1987-07-09 |
Other References:
See also references of EP 2626763A4
Attorney, Agent or Firm:
KAMEYA, Yoshiaki et al. (JP)
Yoshiaki Kameya (JP)
Yoshiaki Kameya (JP)
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Claims: