INVERTER DEVICE AND MOTOR DEVICE INCLUDING THE SAME

The present invention relates to an inverter device that converts power from a power source and drives a motor, the inverter device comprising: an inverter circuit having a switching element; a drive circuit that switches on/off of the switching element; and a control unit for controlling the drive...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SHIMAZU SATOSHI, NAKADA YUHI
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROL OR REGULATION THEREOF CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER CONVERSION OR DISTRIBUTION OF ELECTRIC POWER ELECTRICITY GENERATION
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Beschreibung
Zusammenfassung:	The present invention relates to an inverter device that converts power from a power source and drives a motor, the inverter device comprising: an inverter circuit having a switching element; a drive circuit that switches on/off of the switching element; and a control unit for controlling the drive circuit, the control unit having a rotational speed calculation unit for calculating the minimum rotational speed of the motor on the basis of the power supply voltage, and the control unit terminating the fail-safe control when the rotational speed of the motor is less than the minimum rotational speed after the fail-safe control has been executed. 本发明涉及一种逆变器装置，该逆变器装置对来自电源的功率进行转换并驱动电动机，该逆变器装置包括：具有开关元件的逆变器电路；切换所述开关元件的通断的驱动电路；以及对该驱动电路进行控制的控制部，该控制部具有根据电源电压来计算该电动机的最小转速的转速运算部，该控制部在执行了故障安全控制之后，当该电动机的转速小于所述最小转速时，结束故障安全控制。