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CN108934185B 逆变器装置及电动机的轻负荷判定方法 有权

逆变器装置及电动机的轻负荷判定方法
摘要：
逆变器装置(1)具备：电力转换部(10)，其生成对电动机(3)进行驱动的交流电压；负荷检测部(21)，其对电动机(3)的负荷进行检测；以及运转控制部(20)，其基于在通常运转模式下电动机(3)加速中由负荷检测部检测出的负荷即加速动作时负荷、以及在与通常运转模式不同的数据设定模式下电动机加速中由负荷检测部检测出的负荷即判定基准数据，对电动机(3)是否为轻负荷状态进行判定，在电动机(3)为轻负荷状态的情况下以使得电动机(3)的运转速度成为第1速度的方式对电力转换部(10)进行控制，在电动机(3)不是轻负荷状态的情况下以使得电动机的运转速度成为比第1速度慢的第2速度的方式对电力转换部(10)进行控制。
摘要（英）：

An inverter device (1) comprises an electric power conversion part (10) that generates an AC voltage that drives a motor (3), a load detection unit (21) that detects the load on the motor (3), and a driving control unit (20). The driving control unit (20): determines whether the motor (3) is in a light load state on the basis of an acceleration operation load, which is the load detected by the load detection unit during acceleration of the motor (3) in a normal driving mode, and determination reference data, which is the load detected by the load detection unit during acceleration of the motor in a data setting mode, which is different from the normal driving mode; controls the electric power conversion part (10) such that the driving speed of the motor (3) reaches a first speed when the motor (3) is in a light load state; and controls the electric power conversion part (10) such that the driving speed of the motor reaches a second speed that is lower than the first speed when the motor (3) is not in a light load state.

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