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发明授权
CN1988305B 变频器中使用的方法及变频器 有权 转让

变频器中使用的方法及变频器
摘要：
一种与变频器相关的方法及变频器，变频器设置为周期性反复使用。该方法包括如下步骤：产生并在存储器中存储由一个载荷周期造成的变频器中的功率半导体平均升温(heating)、由功率半导体所产生的升温和最高容许温度确定温度限额、确定变频器中功率半导体的温度，以及当功率半导体温度超过温度限额时改变变频器的工作模式，这时转换到载荷周期。
摘要（英）：

A method related to a frequency converter and a frequency converter are provided, the frequency converter is 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 temperatureof the power semiconductor exceeds the temperature limit when transferring to a loading period.

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