Motor driving circuit and oil extraction system

The utility model discloses a motor driving circuit and an oil extraction system. The motor driving circuit comprises a first switch branch, a second switch branch and a resistor branch. The first switch branch circuit is connected between the driver and the motor, the second switch branch circuit i...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	LIN JINGYING, LAN SHUAI, WANG XIAOQIN, REN YONGBO, LI WEILIN, LIU XIAOYUAN
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORSOR DYNAMO-ELECTRIC CONVERTERS CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS CONVERSION OR DISTRIBUTION OF ELECTRIC POWER DYNAMO-ELECTRIC MACHINES EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ELECTRICITY EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS FIXED CONSTRUCTIONS GENERATION MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The utility model discloses a motor driving circuit and an oil extraction system. The motor driving circuit comprises a first switch branch, a second switch branch and a resistor branch. The first switch branch circuit is connected between the driver and the motor, the second switch branch circuit is connected between the second connection point and the resistor branch circuit, a first connection point between the first switch branch circuit and the second switch branch circuit is connected with the input power supply, and the second connection point is a connection point between the first switch branch circuit and the motor. The first switch branch is used for disconnecting the driver and the motor when the voltage of the first connection point is smaller than a first preset voltage so as to stop the motor from rotating forwards. The second switch branch is used for conducting connection between the second connection point and the resistance branch when the voltage of the first connection point is smaller th