The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 13, 2022
Filed:
Dec. 14, 2018
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Takaaki Hayashi, Tokyo, JP;
Yusuke Arao, Tokyo, JP;
Hitachi Industrial Equipment Systems Co., Ltd., Tokyo, JP;
Abstract
A power conversion device includes a function of improving safety of a system by making a dynamical setting for a safety function operation at a time of detecting an abnormality in a system operation or a diagnosis error in accordance with a condition of the system at a time of the abnormality. A power conversion system includes a power conversion device main body configured to drive a motor and a safety function unit configured to execute a safety function. The safety function unit outputs a safety function operation instruction signal when receiving a safety request signal, and the power conversion device main body controls the motor by the safety function operation instruction signal. The safety function unit monitors a state of the motor, and, in a case where the state of the motor exceeds a predetermined range, executes a threshold-value-excess post-process by a safety function operation selected in advance.