Unlock instant, AI-driven research and patent intelligence for your innovation.

High reliability three-phase AC motor and motor driving system

A three-phase AC, reliable technology, applied in the control system, motor control, single motor speed/torque control, etc., can solve the problem that the motor drive system cannot operate normally, and achieve simple and easy control, low noise, and high efficiency. small magnetic effect

Inactive Publication Date: 2009-02-18
HARBIN INST OF TECH
View PDF0 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem in the existing motor system that the entire motor drive system cannot operate normally due to the phase failure of the armature winding, the present invention provides a high-reliability three-phase AC motor and a motor drive system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • High reliability three-phase AC motor and motor driving system
  • High reliability three-phase AC motor and motor driving system
  • High reliability three-phase AC motor and motor driving system

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0011] Embodiment 1: The high-reliability three-phase AC motor described in this embodiment is composed of a stator and a rotor, wherein the stator includes a casing, an armature core, and an armature winding; the rotor includes a permanent magnet, a permanent magnet yoke, and a rotating shaft; Armature core pitch τ t The pole distance τ from the permanent magnet p Satisfy the relation 6τ t =(6±1)τ p ; The armature winding is a multi-phase symmetrical concentrated winding, each phase winding is composed of several coils connected in series, each coil is wound on a tooth of the armature core, the number of teeth of the armature core is 6n, and on the 2i-1th tooth The coil on the 2ith tooth is wound in reverse; the coil on the 6j+1 tooth is reversely connected to each other, and the coil on the 6j+1 tooth is A-phase winding, and the coil on the 6j+2 tooth is reversely connected to each other. Phase winding, the coils on the 6j+3 teeth are reversely connected to each other to ...

specific Embodiment approach 2

[0013] Embodiment 2: The difference between this embodiment and the high-reliability three-phase AC motor described in Embodiment 1 is that an insulating, Heat insulation sheet 21.

[0014] The insulation and heat insulation sheets 21 added in this embodiment can ensure a good insulation and heat insulation effect between the two coils in each slot on the armature core, making the motor run more reliably.

specific Embodiment approach 3

[0015] Embodiment 3: The high-reliability three-phase AC motor drive system described in this embodiment is composed of the high-reliability three-phase AC motor 20 described in Embodiment 1 or 2 and two three-phase drive controllers 30. The output current signal parameters of the two three-phase drive controllers 30 are identical, and the A, B, and C phase output terminals of a three-phase drive controller 30 are respectively connected to the A-phase winding and B-phase windings of the three-phase AC motor 20 with high reliability. The winding is connected to the C-phase winding, and the A, B, and C-phase output terminals of the other three-phase drive controller 1 are respectively connected to the A-phase winding, B-phase winding, and C-phase winding of the high-reliability three-phase AC motor 20 .

[0016] In this embodiment, two three-phase drivers with identical output current signal parameters are used to drive the motor, wherein the driving currents of the A-phase windi...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

Provided is a high-reliability three phase ac motor and a drive system thereof, belonging to motor and control field. The invention solves the problem that the whole drive system of the existing motor system can not run normally due to armature winding phase failure. For the motor of the invention, the relation of the tooth pitch Taut of an armature core and the pole pitch Taup of a permanent magnet is that as follows: 6Taut = (6+ / -1)Taup; the motor has multi-phase symmetric concentrated winding, 6n armature core teeth, wherein the coil of the 6j+1 tooth being A phase after seriesopposing, the coil of the 6j+2 tooth being A phase after seriesopposing, coil of the 6j+3 tooth being B phase after seriesopposing, coil of the 6j+4 tooth being B phase after seriesopposing, the coil of the 6j+5 tooth being C phase after seriesopposing, the coil of the 6j+6 tooth being C phase after seriesopposing. The motor drive system of the invention uses the existing three-phase driver with two identical parameters, and the A, B, C phase output ends of two three-phase drive controllers are connected to the A, B, C, A, B, C phase windings of the motor.

Description

technical field [0001] The invention relates to a three-phase AC motor and a motor drive system, belonging to the field of motors and their control. Background technique [0002] Since the permanent magnet synchronous motor not only has the advantages of simple structure, high power density, reliable operation, and convenient maintenance of the AC motor, but also has the characteristics of high operating efficiency, no excitation loss and good speed regulation performance of the DC motor, it is widely used in today's national economy. Applications in various fields are becoming more and more popular. In military, aviation, aerospace and other fields, a variety of high-performance aircraft such as missiles, helicopters, fighter jets, and unmanned aerial vehicles are gradually being replaced by electromechanical actuators (EMA for short), which are called "electromechanical actuators" in aviation. ) to replace the hydraulic transmission mechanism of the active aircraft. Comp...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/14H02K1/27H02K3/18H02K3/28H02P6/08H02P29/028
Inventor 寇宝泉贵献国李立毅
Owner HARBIN INST OF TECH