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Inner feedback brushless alternating current machine

A technology of AC motor and bidirectional converter, which is applied in the direction of AC motor control, single motor speed/torque control, electrical components, etc. It can solve the problems of increased cost and inconvenient use, and achieve the effect of reducing volume and cost

Active Publication Date: 2009-04-08
广东华拿东方能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned brushless motors have the common disadvantage of requiring two sets of power supplies
Because the power and voltage of the two sets of stator windings are different, especially for large AC motors, the power winding needs to be powered by a high-voltage power supply, while the control winding is generally powered by a low-voltage power supply, so the above-mentioned brushless doubly-fed motor needs to use two sets of different voltage levels Power supply, if a set of power supply is used, it needs to be equipped with a dedicated transformer, which will not only increase the cost, but also bring inconvenience to users

Method used

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  • Inner feedback brushless alternating current machine
  • Inner feedback brushless alternating current machine
  • Inner feedback brushless alternating current machine

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Embodiment Construction

[0017] In order to further illustrate the present invention, the following is a more detailed description of the internally fed brushless AC motor of the present invention in conjunction with the embodiments.

[0018] figure 1 It is a schematic diagram of the internally fed brushless AC motor of the present invention, wherein 1 is the motor stator, 2 is the rotor, 3 is the controller, and 4 is the power supply. Three sets of independent symmetrical windings are placed in the iron core slot in the motor stator 1, respectively figure 1 A for middle outgoing terminal 1 , B 1 , C 1 Indicates the power winding, with A 2 , B 2 , C 2 Denote the control winding and with A 3 , B 3 , C 3 Indicated infeed winding. The connection relationship of the winding is: the outlet terminal A of the power winding 1 , B 1 , C 1 Connect with power supply 4; control winding terminal A 2 , B 2 , C 2 Through the controller 3, and the outlet terminal A of the inner feed winding 3 , B 3 ...

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Abstract

The invention discloses an inner-feedback electrode-blending non-brush AC motor, which comprises the following three groups of individual winding: power winding, control winding and inner-feedback winding, wherein the control winding connects inner-feedback winding through controller, which changes frequency, amplitude and phase position of control winding to control rotary speed and operating condition of motor. The invention adopts inner-feedback winding as secondary coil of transformer to integrate with primary coil power winding, which reduces cost and bulk for motor.

Description

technical field [0001] The invention relates to an AC motor, in particular to an inner-fed brushless AC motor. Background technique [0002] The existing brushless doubly-fed AC motors mainly have two structural types. One is a cascaded brushless double-fed AC motor composed of two conventional wound induction motors. The stator windings of the two motors are respectively connected to the power supply, and the rotors are connected coaxially. The two rotor windings are in the same phase sequence or reverse phase sequence. The other is a single-motor brushless double-fed AC motor developed on the basis of the above-mentioned cascaded brushless double-fed AC motor. Two sets of windings with different numbers of poles are embedded on the stator core of the motor, and one set is used as a power winding. While the other set is used as the control winding, the rotor adopts a specially designed cage or reluctance rotor structure. The common advantages of the above two motors are t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/04H02K3/28H02K11/00H02P23/00H02P25/02H02P27/00H02K11/33H02P6/08
Inventor 王凤翔张凤阁王正
Owner 广东华拿东方能源有限公司