Control circuit for reducing temperature of frequency converter

The utility model relates to the technical field of vector frequency converters, and discloses a control circuit for reducing the temperature of a frequency converter, which comprises a temperature signal input end TEMP, an IGBT temperature control circuit, an IGBT drive circuit, an output end OUTW...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	SUN CHANG, SHI DONGYUAN, JIN WANSHUN
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 THEREOF 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 utility model relates to the technical field of vector frequency converters, and discloses a control circuit for reducing the temperature of a frequency converter, which comprises a temperature signal input end TEMP, an IGBT temperature control circuit, an IGBT drive circuit, an output end OUTW + and an output end OUTW-, the IGBT temperature control circuit comprises a resistor R1, an optocoupler PC1, a resistor R2, a resistor R3, an NPN triode Q1, a relay RY1, a relay RY2, a diode D1, a diode D2, an adjusting resistor R10 and an adjusting resistor R13. According to the application, when the frequency converter operates normally, the driving resistor of the IGBT is the driving resistor in the IGBT driving circuit, when the temperature of the frequency converter is too high, the main control chip sends a TEMP signal to the optocoupler PC1, after the optocoupler PC1 is switched on, the NPN triode Q1 is switched on, and when the temperature of the frequency converter is too high, the NPN triode Q1 is switche