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High-speed motor system

A high-speed motor, AC motor technology, applied in the magnetic circuit shape/pattern/structure, the magnetic circuit static parts, the shape/pattern/structure of the winding conductor, etc., can solve the problem that the damping effect is difficult to achieve the best, increase the system volume and loss, to achieve low cost, reduce high frequency loss, suppress vibration and noise

Active Publication Date: 2013-10-02
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of reducing system vibration by using an electromagnetic damper to generate damping force. It is necessary to install an electromagnetic damper at both ends of the rotor, thus increasing the volume and loss of the system; in addition, the damping force acts on both ends of the rotor. Usually, the vibration amplitude at the middle point of the rotor axis is the largest, so the damping effect is difficult to achieve the best problem. A high-speed motor system is provided.

Method used

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specific Embodiment approach 1

[0023] Specific implementation mode one: the following combination image 3 Describe this embodiment mode, the high-speed motor system described in this embodiment mode, it comprises double-winding AC motor 1, main power converter 2 and control unit 3;

[0024] The double-winding AC motor 1 includes a stator and a rotor, the stator includes a stator core and a stator winding, the stator core is cylindrical, and the stator winding is a double-winding structure composed of a main winding and an auxiliary winding;

[0025] The lead wire of the main winding is connected to the main power converter 2;

[0026] The secondary winding leads are connected to the control unit 3 .

[0027] The two-winding AC motor 1 can be a synchronous motor, an induction motor or a reluctance motor

specific Embodiment approach 2

[0028] Specific implementation mode two: the following combination Figure 4 Describe this embodiment, this embodiment will further describe Embodiment 1, the control unit 3 includes a vibration signal processing unit, an inverter circuit and a controller,

[0029] The vibration signal processing unit receives the vibration signal output by the auxiliary winding, the data processed by the vibration signal processing unit is output to the controller, the controller outputs control instructions to the inverter circuit, and the inverter circuit outputs the control current for the auxiliary winding.

[0030] In this embodiment, the vibration signal output by the secondary winding is collected and processed by the vibration signal processing unit, and the processed signal is output to the controller, and the controller outputs corresponding control instructions to the inverter circuit according to the input data, and the inverter circuit outputs The control current is fed back to t...

specific Embodiment approach 3

[0033] Specific implementation mode three: the following combination Figure 6 to Figure 8 Describe this embodiment, this embodiment will further explain Embodiment 1, the main winding is a star structure, the number of coils of the main winding is an even number; The output terminals are connected; the secondary winding lead wire is connected to the detection signal input terminal of the control unit 3;

[0034] Control unit 3 comprises vibration signal processing unit, inverter circuit and controller,

[0035] The vibration signal processing unit receives the vibration signal of the secondary winding, the data processed by the vibration signal processing unit is output to the controller, and the controller outputs control instructions to the inverter circuit, and the output end of the inverter circuit is used as the output end of the control unit 3 .

[0036] In this embodiment, the control command output by the inverter circuit is fed back to the middle point of the coil s...

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Abstract

A high-speed motor system belongs to the field of motors. The invention solves the problems that two electromagnetic dampers are needed to be respectively mounted at two ends of a rotor to reduce the system vibration through producing damping force by adopting the electromagnetic dampers, if so, the size and the loss of the system are increased; in addition, the damping force is applied to the two ends of the rotor, but generally, the vibration amplitude of an axial intermediate point of the rotor is maximum, so that the damping effect is difficult to reach the best. The high-speed motor system comprises a duplex winding alternating current motor, a main power converter and a control unit, wherein the duplex winding alternating current motor comprises a stator and a rotor, the stator comprises a stator core and a stator winding, the stator core is cylindrical, the stator winding adopts a duplex winding structure formed by a main winding and an auxiliary winding, an outgoing line of the main winding is connected with the main power converter, and an outgoing line of the auxiliary winding is connected with the control unit.

Description

technical field [0001] The invention relates to a high-speed motor system and belongs to the field of motors. Background technique [0002] Due to the high speed and high power density of the high-speed motor, the geometric size of the motor is much smaller than that of the low-speed motor of the same power, which can effectively save materials; the high-speed motor has small moment of inertia and fast dynamic response, and can be directly connected to the load, eliminating the need for traditional The advanced mechanical transmission device can effectively reduce the vibration and noise of the system and improve the efficiency of the transmission system. Therefore, high-speed motors have become a research hotspot in the field of motors. At present, the application fields of high-speed motors are becoming more and more extensive, such as high-speed grinding machines and other processing machine tools, high-speed flywheel energy storage systems, air cycle refrigeration syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/12H02K3/04H02K3/28H02K1/16
Inventor 寇宝泉陈宇声曹海川贵献国李伟力
Owner HARBIN INST OF TECH
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