Title:
MAXIMUM POWER POINT TRACKING METHOD
Document Type and Number:
WIPO Patent Application WO/2020/029493
Kind Code:
A1
Abstract:
A maximum power point tracking method, comprising: using the average voltage of a direct current power generation device and the average inductor current in a booster circuit thereof as input parameters to calculate a power, and then outputting a control reference voltage of the direct current power generation device and adjusting the direct current power generation device; the adjustment mode comprises a rough adjustment mode, a fine adjustment mode, and a minute adjustment mode, wherein when a power variation value of the direct current power generation device is less than 0, switching from the rough adjustment mode to the fine adjustment mode; and when the power variation value is less than a power threshold, switching from the fine adjustment mode to the minute adjustment mode. The power threshold is dynamically determined according to the actual power of the direct current power generation device. A fine adjustment direction and a minute adjustment direction are each dynamically determined according to the power variation value and a voltage variation value of the direct current power generation device. A rough adjustment step length, a fine adjustment step length, and a minute adjustment step length are each dynamically determined according to an open circuit voltage value of the direct current power generation device. The maximum power point tracking method may have the same tracking effect on PV curves of a full working voltage level and a power level range, and may also prevent disturbances to directions resulting in the determination of errors.
Inventors:
LU HAIBO (CN)
XU WEIJUN (CN)
LIU TAO (CN)
HUANG MIN (CN)
FANG GANG (CN)
LU JINJUN (CN)
XU WEIJUN (CN)
LIU TAO (CN)
HUANG MIN (CN)
FANG GANG (CN)
LU JINJUN (CN)
Application Number:
PCT/CN2018/120082
Publication Date:
February 13, 2020
Filing Date:
December 10, 2018
Export Citation:
Assignee:
JIANGSU GOODWE POWER SUPPLY TECH CO LTD (CN)
International Classes:
G05F1/67
Foreign References:
| CN107918437A | 2018-04-17 | |||
| CN103019294A | 2013-04-03 | |||
| CN106681423A | 2017-05-17 | |||
| CN103488238A | 2014-01-01 | |||
| CN102163067A | 2011-08-24 | |||
| CN104104112A | 2014-10-15 | |||
| CN107491137A | 2017-12-19 | |||
| CN104104112A | 2014-10-15 |
Attorney, Agent or Firm:
SUZHOU CREATOR PATENT AND TRADEMARK AGENCY, LTD (CN)
Download PDF:
Previous Patent: METHOD FOR PREPARING METAL POWDER BY ATOMIZATION
Next Patent: PASSIVE ISLANDING DETECTION METHOD
Next Patent: PASSIVE ISLANDING DETECTION METHOD