Title:
電動機制御装置及び熱交換器ユニット
Document Type and Number:
Japanese Patent JP6887529
Kind Code:
B2
Abstract:
Provided are an electric motor control device and a heat exchanger unit equipped with the electric motor control device. The electric motor control device has: a power conversion device that supplies three-phase voltage to a plurality of electric motors; a switching device that electrically connects or disconnects at least the power conversion device and the electric motors except one electric motor; and a control unit that controls the operations of the power conversion device and the switching device. When switching from a state in which two or more electric motors are operating to a single-operation state in which only a set electric motor, which is a single motor that has been set, operates, the control unit reduces the rotational speeds of the two or more operating electric motors and then brings the switching device into an off-state.
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Inventors:
Toshinori Asai
Shinsaku Kusube
Kazunori Sakahirobe
Yasuhiko Wada
Takahiko Kobayashi
Shinsaku Kusube
Kazunori Sakahirobe
Yasuhiko Wada
Takahiko Kobayashi
Application Number:
JP2019567424A
Publication Date:
June 16, 2021
Filing Date:
January 23, 2018
Export Citation:
Assignee:
Mitsubishi Electric Corporation
International Classes:
H02P5/46
Domestic Patent References:
| JP2007259554A | ||||
| JP2001286175A | ||||
| JP1172087A | ||||
| JP6189596A |
Attorney, Agent or Firm:
Patent Business Corporation Kisa Patent Trademark Office