Title:
CONTROL METHOD AND CONTROL SYSTEM FOR A DISTRIBUTED POWER SOURCE ENERGY GENERATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/126822
Kind Code:
A1
Abstract:
A control method and control system for a distributed power source energy generation system The distributed power supply energy generation system comprises N sub-isolated three-port converters and N independent distributed direct-current power sources corresponding to the N sub-isolated three-port converters on a one-to-one basis, wherein N is a natural number greater than 1; an input port of each of the sub-isolated three-port converters is connected to a corresponding distributed direct-current power source, two-way ports are connected in parallel so as to form a low-voltage direct-current bus-bar, and output ports are connected in series and then access a medium-voltage direct-current power distribution network. The control method comprises: the input power of each sub-isolated three-port converter is controlled independently; the two-way ports and the output ports use a virtual resistance-based power-voltage drop control strategy; stable control of the voltage of the two-way port of each sub-isolated three-port converter and voltage equalization control on the voltage of the output port of each sub-isolated three-port converter can be realized; modular design is achieved; and a feasible technical solution can be provided for the access of a distributed power source energy generation system into a medium-voltage direct-current power distribution network.
Inventors:
SUN KAI (CN)
LU YANGJUN (CN)
WU HONGFEI (CN)
LU YANGJUN (CN)
WU HONGFEI (CN)
Application Number:
PCT/CN2017/113582
Publication Date:
July 12, 2018
Filing Date:
November 29, 2017
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
International Classes:
H02J1/12; H02M3/335
Domestic Patent References:
| WO2014047560A1 | 2014-03-27 |
Foreign References:
| CN106711994A | 2017-05-24 | |||
| CN106208715A | 2016-12-07 | |||
| CN103869872A | 2014-06-18 | |||
| CN103956894A | 2014-07-30 | |||
| CN103904638A | 2014-07-02 | |||
| CN101702523A | 2010-05-05 |
Attorney, Agent or Firm:
RUIBANG&PARTNERS (CN)
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