Title:
SOLAR POWER GENERATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2019/208474
Kind Code:
A1
Abstract:
The present invention adjusts the output of a plurality of solar cell strings in accordance with the power consumption of a load device or similar and the intensity of sunlight. The voltage of a low potential line LL is a reference potential. The voltage of a high potential line LH is a DC voltage of a high potential compared to the reference potential. Solar cell strings 11-14 output voltages to the high potential line LH. When the voltage of the high potential line LH is, for example, 410V or less, a control unit 100 outputs a PWM signal VP1. The PWM signal VP1 is a pulse wave having a duty ratio that increases in accordance with a decrease in the voltage of the high potential line LH and decreases in accordance with an increase in said voltage. PWM signals VP2-VP4 are each the same type of pulse wave as the PWM signal VP1. Following the PWM signal VP1, the control unit 100 outputs each of the PWM signals VP2-VP4 when the sequentially preceding PWM signal is at or above a prescribed duty ratio. The opening and closing of switches SW1-SW4 are individually controlled by each PWM signal VP1-VP4.
More Like This:
Inventors:
HANEDA MASAJI (JP)
Application Number:
PCT/JP2019/016955
Publication Date:
October 31, 2019
Filing Date:
April 22, 2019
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD (JP)
International Classes:
H02J1/00; H02J1/12; H02J3/38; H02S10/00
Foreign References:
| JP2017060345A | 2017-03-23 | |||
| JP2014067259A | 2014-04-17 |
Attorney, Agent or Firm:
KOJIMA Takiro (JP)
Download PDF: