Invention Grant
- Patent Title: Method of changing an operation mode of a frequency converter based on temperature conditions, and a frequency converter having a changeable mode of operation based on temperature conditions
- Patent Title (中): 基于温度条件改变变频器的工作模式的方法，以及基于温度条件具有可变操作模式的变频器
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Application No.: US11637798Application Date: 2006-12-13
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Publication No.: US08238131B2Publication Date: 2012-08-07
- Inventor: Ari Hedemäki , Vesa Tiihonen
- Applicant: Ari Hedemäki , Vesa Tiihonen
- Applicant Address: FI Helsinki
- Assignee: ABB Oy
- Current Assignee: ABB Oy
- Current Assignee Address: FI Helsinki
- Agency: Buchanan Ingersoll & Rooney PC
- Priority: FI20055684 20051220
- Main IPC: H05K7/20
- IPC: H05K7/20 ; H02M5/00
Abstract:
A method in connection with a frequency converter and a frequency converter, the frequency converter being arranged for periodic recurrent use. The method comprises steps for generating and storing in a memory an average heating of a power semiconductor of the frequency converter, caused by one loading period, determining a temperature limit from the generated heating and the highest allowed temperature of the power semiconductor, determining the temperature of the power semiconductor in the frequency converter, and changing the operation mode of the frequency converter when the temperature of the power semiconductor exceeds the temperature limit when transferring to a loading period.
Public/Granted literature
- US20110141787A1 Method in frequency converter, and frequency converter Public/Granted day:2011-06-16
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