Title:
METHOD FOR TRACKING CONTROL OF MAXIMUM POWER POINT OF SOLAR CELL AND TRACKING DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/000388
Kind Code:
A1
Abstract:
Disclosed are a method and device for tracking control of a maximum power point of a solar cell, wherein an output voltage of the solar cell is converted to a voltage required by a load via a conversion module comprising a switching unit. The control method comprises: acquiring an open-circuit voltage of the solar cell (S1); adjusting a duty cycle of the switching unit such that an output voltage of the solar cell decreases from the open-circuit voltage gradually in a first change direction (S2); if the output voltage of the solar cell is less than or equal to a predetermined voltage value, reversely adjusting the duty cycle of the switching unit, wherein the predetermined voltage value is less than the output voltage of the solar cell corresponding to the maximum power of the solar cell (S3); calculating a current output power of the solar cell; and if the current output power is less than a previous output power, determining that the previous output power is the maximum output power of the solar cell (S5). The control method can track the actual maximum power value more easily.
Inventors:
LI HONGTAO (CN)
Application Number:
PCT/CN2015/089559
Publication Date:
January 05, 2017
Filing Date:
September 14, 2015
Export Citation:
Assignee:
GD MIDEA AIR-CONDITIONING EQUIPMENT CO LTD (CN)
International Classes:
G05F1/67
Foreign References:
| CN102291050A | 2011-12-21 | |||
| CN102314190A | 2012-01-11 | |||
| CN104238625A | 2014-12-24 | |||
| EP2527948A2 | 2012-11-28 | |||
| US20100263711A1 | 2010-10-21 |
Other References:
See also references of EP 3242183A4
Attorney, Agent or Firm:
TSINGYIHUA INTELLECTUAL PROPERTY LLC (CN)
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