Title:
電力変換装置
Document Type and Number:
Japanese Patent JP5779530
Kind Code:
B2
Abstract:
An inverter includes an inverter device, a current detection unit, an edge conversion unit, and an edge determination unit. The inverter device outputs three-phase alternating currents to drive an AC motor. The current detection unit detects at least two phases from among the three-phase output currents from the inverter device. The edge conversion unit converts the currents detected by the current detection unit into edges. The edge determination unit determines a phase loss based on the edges converted at the edge conversion unit. The edge determination unit compares the converted edges with each other, and detects loss of at least one phase.
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Inventors:
Takuya Sugimoto
Yusuke Arao
Yusuke Arao
Application Number:
JP2012066526A
Publication Date:
September 16, 2015
Filing Date:
March 23, 2012
Export Citation:
Assignee:
Hitachi Industrial Equipment Systems Co., Ltd.
International Classes:
H02P7/292; G01R29/18; H02H3/253; H02H3/34; H02H7/122; H02M7/48
Domestic Patent References:
| JP2012005257A | ||||
| JP10243551A | ||||
| JP2010041830A | ||||
| JP2001309669A | ||||
| JP2009017665A | ||||
| JP2005201461A |
Attorney, Agent or Firm:
Manabu Inoue
Yuji Toda
Shigemi Iwasaki
Yuji Toda
Shigemi Iwasaki
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