Rotating electrical machine

A mechanical and electric technology, applied in the direction of electronic commutation motor control, mechanical equipment, electrical components, etc., can solve the problem of high manufacturing cost
CN1759527AInactive Publication Date: 2006-04-12DOLPHIN ELECTRIC HLDG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
DOLPHIN ELECTRIC HLDG
Publication Date
2006-04-12
Estimated Expiration
Not applicable · inactive patent

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Abstract

A rotating electrical machine has a housing with a shaft mounted rotatably in it. A rotor is fixed to the shaft and has a plurality of magnetic poles. A stator is positioned about the rotor and has a winding. A switch is mounted within the housing and has a first position for allowing current in one direction through the winding and a second position for allowing current in an opposite direction through the winding. A mechanical activator is movable with or by the shaft and acts on the switch to move it between the first and second positions.
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Description

technical field

[0001] The present invention relates to rotating electric machines that can be used as electric machines in which electrical energy is converted into motion or as generators in which motion is converted into electrical energy. Background technique

[0002] Two types of DC motors are known. In the first type, the DC power supply is connected to the coils wound on the rotor through contact brushes and a commutator. The rotor rotates around or within a stator in the form of one or more permanent magnets or individually energized electromagnets. A commutator is used to switch the current between the coils. In the second type, the rotor includes a number of permanent magnets and the stator includes a number of winding coils. Associated circuitry controls the switching of current between the stator coils.

[0003] The disadvantage of the first type is that the electromechanical wear of the brushes and commutator limits the lifetime of the machine to 2000 hours....

Claims

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