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Coiled multi-phase motor and its control method

A multi-phase motor and control method technology, which is applied in the direction of AC motor control, shape/style/structure of winding conductors, control system, etc. characteristics, the effect of expanding the speed range and improving the efficiency

Active Publication Date: 2019-01-29
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems of low efficiency and insufficient fault-tolerant operation capacity of traditional structure motors in low-speed and light-load working areas, and provides a winding group multi-phase motor and its control method

Method used

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  • Coiled multi-phase motor and its control method
  • Coiled multi-phase motor and its control method
  • Coiled multi-phase motor and its control method

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specific Embodiment approach 1

[0015] Specific implementation mode one: the following combination figure 1 and figure 2 Describe the present embodiment, the winding set type polyphase motor described in the present embodiment includes three sets of armature windings, and the three sets of armature windings are arranged on the stator core; each set of armature windings includes m-phase windings, and m is An integer greater than or equal to 3; the corresponding phase windings of the three sets of armature windings are wound on the stator core 4 at intervals in sequence;

[0016] The three sets of armature windings are high-speed winding 1, medium-speed winding 2 and low-speed winding 3. The three sets of armature windings have the same rated power and different rated speeds; the neutral points of the three sets of armature windings are independently drawn out.

[0017] The m-phase windings of each set of armature windings adopt a star connection method, in which the positive poles of each phase winding are ...

specific Embodiment approach 2

[0027] Specific implementation mode two: the following combination Figure 1 to Figure 4 Describe this embodiment, the control method of the winding group multi-phase motor described in this embodiment, it realizes based on the winding group multi-phase motor, such as image 3 As shown, the control method controls the motor through the main controller and three sub-controllers. The three sub-controllers are respectively a high-speed controller, a medium-speed controller and a low-speed controller, correspondingly controlling the high-speed winding 1 and the medium-speed winding 2 and the working state of the low-speed winding 3;

[0028] The main controller detects the power demand of the load, and distributes the speed and torque commands to the high-speed controller, medium-speed controller and low-speed controller according to the speed and torque requirements of the load, and the three sub-controllers then distribute the corresponding armature windings. The current comman...

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Abstract

The invention relates to a winding-set-type multiphase motor and a control method thereof and belongs to the technical field of structures and control of multiphase motors. The winding-set-type multiphase motor and the control method thereof are used for solving the problems of motors with the traditional structures that the efficiency is relatively low in low-speed and light-load working areas and the fault-tolerant running capability is insufficient. The motor comprises three sets of armature windings, wherein each set of armature windings comprises m phase windings, and corresponding phase windings of the three sets of armature windings are sequentially wound on stator cores in a spaced manner; the three sets of armature windings separately are a high-speed winding, a medium-speed winding and a low-speed winding and are the same in rated power and different in rated speed of revolution; neutral points of the three sets of armature windings are independently led out separately. The control method comprises the steps of controlling the motor through a master controller and three sub-controllers, and using the three sub-controllers, i.e., a high-speed controller, a medium-speed controller and a low-speed controller to correspondingly control the working condition of the high-speed winding, the working condition of the medium-speed winding and the working condition of the low-speed winding, so as to enable the motor to drive a load to rotate in an efficiency-optimal state. The invention relates to a novel motor structure and control thereof.

Description

technical field [0001] The invention relates to a winding group multi-phase motor and a control method thereof, and belongs to the technical field of multi-phase motor structure and control. Background technique [0002] Three-phase, six-phase, twelve-phase or fifteen-phase motors are often used in existing electric drive and electric propulsion systems, all of which have the same winding design, the rated operating point of the motor is uniquely determined, and the efficiency of the motor is high near the rated point, but at low speed The efficiency in the light-load working area is relatively low, and the advantages of electric drive and electric propulsion systems cannot be fully utilized in low-speed and light-load applications with long working hours. Contents of the invention [0003] The object of the present invention is to solve the problems of low efficiency and insufficient fault-tolerant operation capability of the traditional structure motor in the low-speed a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K3/28H02P25/22
CPCH02K3/28H02P25/22
Inventor 崔淑梅赵天旭匡志
Owner HARBIN INST OF TECH