Title:
Power conditioner
Document Type and Number:
Japanese Patent JP6195507
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a power conditioner having a protection function by which the occurrence of breakdown or failure of internal elements is prevented with a simple and inexpensive configuration even when erroneous connection occurs in installation work of a power generation system using an external DC power source, and an erroneous connection state is reported to allow secure repair.SOLUTION: An input terminal part 10 and an input end of a converter 11 are connected via a parallel circuit of a series circuit of a backflow prevention element 19 and a current limitation element 20 and opening/closing means 21, and a first voltage sensor 22 and a second voltage sensor 23 are provided. When external line connection to the input terminal part is terminated and a power source of the power conditioner is turned on, control means 17 controls the converter and an inverter 12 into an inoperative state without closing the opening/closing means and, if the absence of erroneous connection is determined on the basis of respective measurement values of the first voltage sensor and the second voltage sensor, closes the opening/closing means to perform such control that the converter and the inverter start respective conversion operations.
Inventors:
Naoki Nishio
Ryo Numakura
Ryo Numakura
Application Number:
JP2013240263A
Publication Date:
September 13, 2017
Filing Date:
November 20, 2013
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02J3/38; H02H11/00; H02J7/35; H02M7/48
Domestic Patent References:
| JP2011160560A | ||||
| JP2011095915A | ||||
| JP9322435A | ||||
| JP7322484A | ||||
| JP51040439Y1 | ||||
| JP2013150431A |
Foreign References:
| CN102403888A | ||||
| CN102055184A | ||||
| US20040109272 | ||||
| US20020057078 | ||||
| WO2007110913A1 |
Attorney, Agent or Firm:
Hiroaki Sakai
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