Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Masahiro Hiraga0
Tomoya Kamezawa0
Satoshi Ibori0
Jiangming Mao0
Masayuki Hirota0
Date of Patent
March 8, 2011
0Patent Application Number
120399790
Date Filed
February 29, 2008
0Patent Primary Examiner
Patent abstract
For applications in a facility where a power conversion apparatus is frequently started and stopped, a power conversion apparatus and a power cycle longevity estimation method are provided which improve an ease of use of the facility. The power conversion apparatus comprises power conversion circuits to supply ac power of variable voltage and variable frequency, a detection circuit to detect a temperature of the power semiconductor in the power conversion circuits, and a computation device to calculate a power cycle longevity of the power semiconductor based on a maximum temperature rise detected by the detection circuit.
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
