Novel brushless ringless starter for wound rotor motor

Abstract

The invention relates to a novel brushless ringless starter for a wound rotor motor. The brushless ringless starter is composed of a motor mounting shaft sleeve, a key slot, a starting component mounting nut, a positioning bolt and a starting component, wherein the inside of the starting component is provided with a sliding bar, an insulating sleeve and a spring; the insulating sleeve, a centrifugal pole plate, a contact head, a wire sliding module, the spring, a wire slideway and a binding post are connected by screws; a resistor slideway module, the spring, a resistor slideway and a resistor are connected by wires; both the wire slideway and the resistor slideway are installed on the inner wall of the cylindrical iron core in a uniform insulation mode; the insulating layer on the outer wall of the iron core winds around the resistor wire, and is insulated with the shell of the starting component; one end of the resistor is connected with the shell; the inner wall of the shell is provided with the contact head; the top of the starting component mounting bolt is provided with a vacuum valve; the inside of the starting component is vacuumized to form a vacuum chamber; the centrifugal pole plate slides in the vacuum chamber under the action of the centrifugal force of the motor; the spring is reset; and when in use, the shaft sleeve is installed on the motor shaft, the sleeve nut is arranged on the starting component, the motor lead is correspondingly connected to the screw at the binding post of the starting component, and the starter can be started after confirming to be errorless.

Description

Technical field [0001] The invention relates to a starting device for a wire-wound rotor motor, in particular to enable the wire-wound rotor motor to realize brushless and loopless starting operation. Background technique [0002] At present, there are two forms of brushless and ringless starters for wire wound rotor motors. A kind of liquid resistance starting, the volume is heavy and easy to leak, the starting short circuit has a large impact current, and the control cabinet is easy to trip. The second is the frequency-sensitive rheostat starter. After starting, the frequency-sensitive winding and the motor coil run in series, causing potential damage to the motor winding. The light-load starting speed is too fast, and the heavy load is difficult to start, and the manufacturing power is limited. Contents of the invention [0003] The present invention provides a novel brushless and ringless starter for a wire-wound rotor motor to avoid the above-mentioned shortcomings o...

AI Technical Summary

Problems solved by technology

A kind of liquid resistance starting, the volume is heavy and easy to leak, the starting short circuit has a large impact current, and the control cabinet is easy to trip

The second is the frequency-sensitive rheostat starter. After starting, the frequency-sensitive winding runs in series with the motor coil, causing potential damage to the motor winding. The starting speed of the light load is too fast, and the heavy load is difficult to start, and the manufacturing power is limited.

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