Title:
POWER SUPPLY SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/208045
Kind Code:
A1
Abstract:
Provided is a power supply system. By means of cascading output ends of power supplies or DC-to-DC units, an output voltage is improved, a current between the power supplies or the DC-to-DC units and DC-to-AC units is reduced, and the problems of the cost and loss of cables from the power supplies or the DC-to-DC units to the DC-to-AC units are solved. In addition, the power supply system provided by the embodiments of the present application can also reduce the number of cables from the power supplies or the DC-to-DC units to the DC-to-AC units by means of cascading the output ends of the power supplies or the DC-to-DC units and cascading inputs of the DC-to-AC units, thereby reducing system cost. Furthermore, in the power supply system provided by the embodiments of the present application, the inputs of the DC-to-AC units are cascaded, and outputs thereof are isolated from each other, such that the specification of a power conversion device can be lowered. The problems of the specifications of power conversion devices in the current industry being insufficient and the high cost thereof are solved. Moreover, the power supply system provided in some embodiments can also solve the problem of potential induced degradation (PID) caused by a negative voltage of a battery panel to earth when the system operates.
Inventors:
ZHANG YANZHONG (CN)
GAO YONGBING (CN)
WANG XUN (CN)
HUEMPFNER ROLAND (CN)
GAO YONGBING (CN)
WANG XUN (CN)
HUEMPFNER ROLAND (CN)
Application Number:
PCT/CN2020/085212
Publication Date:
October 21, 2021
Filing Date:
April 16, 2020
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H02J3/38; H02M3/00; H02M5/00
Domestic Patent References:
| WO2019130375A1 | 2019-07-04 |
Foreign References:
| CN109167390A | 2019-01-08 | |||
| CN102244382A | 2011-11-16 | |||
| CN109802426A | 2019-05-24 |
Attorney, Agent or Firm:
SHENPAT INTELLECTUAL PROPERTY AGENCY (CN)
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