Abstract: A power conversion apparatus includes an electrical circuit including a heat source, a heat pipe cooler in which a refrigerant is enclosed, the heat pipe cooler configured to cool the heat source, a freeze determiner configured to determine whether the refrigerant is frozen, and an output limiter configured to limit output when the freeze determiner determines that the refrigerant is frozen.
Type:
Application
Filed:
December 23, 2014
Publication date:
April 23, 2015
Applicant:
TOSHIBA MITSUBISHI-ELECTRIC IND. SYSTEMS CORP.
Abstract: There is provided a driving apparatus of an electric motor for a reduction roll that can improve maximization of rolling performance and a speed decrease amount by making maximal use of torque that various electric motors can generate during material entry.
Type:
Application
Filed:
August 3, 2006
Publication date:
October 29, 2009
Applicant:
TOSHIBA MITSUBISHI-ELECTRIC IND. SYSTEMS CORP.