CN1885687A - Transverse magnetic field permanent-magnet synchronous motor with rotor magnetic pole three-sided wall type structure - Google Patents

Abstract

The invention discloses a transverse magnetic field permanent magnet synchronous motor with a rotor magnetic pole three-wall structure, which belongs to the field of permanent magnet motors. The stator is made of U-shaped silicon steel sheets, forming a U-shaped iron core with the same number of pole pairs as the motor, which is evenly distributed along the circumference and fixed on the casing; the stator winding is a ring coil structure, placed in the slot of the U-shaped iron core of the stator The bottom of the rotor; each phase of the rotor has two magnetic pole rings, the positions of the magnetic poles on the two magnetic pole rings are staggered with each other, and the electric angle difference is 180 degrees to form the main magnetic pole. Rotor structure. The invention has the advantages that the stator can adopt a simple U-shaped lamination structure, and the rotor adopts a three-wall magnetic accumulation structure, which is easy to manufacture, reduces stator core loss, increases air gap flux density, and improves motor performance.

Description

A transverse magnetic field permanent magnet synchronous motor with a three-wall structure of rotor poles

technical field

The invention belongs to the field of permanent magnet motors, in particular to a transverse magnetic field permanent magnet synchronous motor with a rotor magnetic pole three-wall structure.

Background technique

Existing transverse magnetic field permanent magnet motors are mainly divided into two types: planar type and magnetism-concentrating type. The flat type has a simple structure, but has a low air-gap magnetic density and poor performance. The magnetic-concentration structure has a higher air-gap magnetic density and better performance, but the stator structure generally adopts an inner and outer double stator structure, or a three-dimensional stator core structure, which is more complicated and increases the difficulty and cost of manufacturing.

Contents of the invention

The purpose of the present invention is to solve the problem that the stator structure is relatively complicated in the existing magnetism-concentrating type transverse magnetic field permanent magnet motor. On the basis of the structure, the structure of the stator core is simplified, the manufacturing process is simplified, and the performance of the motor is improved.

The transverse magnetic field permanent magnet synchronous motor with three walls of the rotor pole structure designed by the present invention comprises a U-shaped stator core, an annular stator winding, a three-wall rotor permanent magnet pole, a rotor core, a rotor bracket, a rotating shaft, a bearing, and a casing. The reason is: the stator is made of U-shaped silicon steel sheets, forming a U-shaped iron core with the same number of pole pairs as the motor, which is evenly distributed along the circumference and fixed on the casing; the stator winding is a ring coil structure, placed on the stator U-shaped iron core The bottom of the groove; each phase of the rotor has two magnetic pole rings, and the positions of the magnetic poles on the two magnetic pole rings are staggered with each other, with a difference of 180 degrees in electrical angle, forming the main magnetic pole; The entire rotor structure.

Each phase of the motor is independent of each other without magnetic circuit coupling. The number of phases is m, and m can be increased according to the requirement of output torque. The value of m is a positive integer ranging from 3 to 9.

The stator teeth of each phase of the motor have an electrical angle difference of 2π/m.

The phases of the motor are independent of each other without magnetic circuit coupling, and the output torque of the motor can be increased by increasing the number of phases m of the motor, as long as the stator teeth of each phase differ by 2π/m in electrical angle.

The invention has the advantages that the stator can adopt a simple U-shaped lamination structure, and the rotor adopts a three-wall magnetic accumulation structure, which is easy to manufacture, reduces stator core loss, increases air gap flux density, and improves motor performance.

Description of drawings

Fig. 1 is a schematic diagram of the axial stator and rotor structure of the transverse magnetic field permanent magnet motor with the three-wall structure of the rotor magnetic poles of the present invention.

Fig. 2 is a radial schematic diagram of the rotor of the transverse magnetic field permanent magnet motor with three walls of the rotor magnetic pole structure of the present invention.

Fig. 3 is a diagram showing the relationship between U-shape of the stator and the position of the stator windings of the transverse magnetic field permanent magnet motor with the three-wall structure of the rotor magnetic poles of the present invention.

Fig. 4 is a schematic diagram of the three-phase thirty-pole radial structure of the transverse magnetic field permanent magnet motor with the three-wall structure of the rotor magnetic poles of the present invention.

Figure 5 shows a schematic diagram of the structure of a magnetic pole of the rotor.

Detailed ways

The invention proposes a transverse magnetic field permanent magnet synchronous motor with a rotor magnetic pole three-wall structure, which is proposed to solve the complicated stator structure in the existing magnetic concentration type transverse magnetic field permanent magnet motor. The present invention will be described below in conjunction with the accompanying drawings.

1 includes U-shaped stator core 5, annular stator winding 7, three-wall rotor permanent magnet poles 6, 10, 11; rotor cores 3, 4, 12, rotor bracket 2, rotating shaft 9, and bearing 1. The stator 5 is made of U-shaped silicon steel sheets, forming a U-shaped iron core with the same number of pole pairs as the motor, which is evenly distributed along the circumference and fixed on the casing 8; the stator winding 7 is a ring coil structure, placed in the stator U-shaped The bottom of the core slot (as shown in Figure 3); each phase of the rotor has two magnetic pole rings, and the positions of the magnetic poles on the two magnetic pole rings are staggered with each other, with an electrical angle difference of 180 degrees, forming the main magnetic pole, and the rotor magnetic pole and the iron core are glued together The entire rotor structure is formed on the rotor non-magnetically conductive support 2 .

Figure 2 shows a radial view of the rotor of one phase. The permanent magnet blocks 6, 10, and 11 constitute a three-wall magnetic pole structure and divide the rotor core into three parts: 3, 4, and 12.

Figure 3 shows the positional relationship between the stator U-shaped iron core 5 and the stator winding 7 of the motor

FIG. 4 is a schematic diagram of the three-phase thirty-pole radial structure of the transverse magnetic field permanent magnet motor with three walls of the rotor magnetic pole structure of the present invention. The stator winding 7 is a ring coil structure, which is placed at the bottom of the U-shaped iron core slot of the stator; each phase of the rotor has two magnetic pole rings, and the positions of the magnetic poles on the two magnetic pole rings are interlaced with each other, and the electric angle difference is 180 degrees to form the main magnetic pole. The non-magnetically conductive support 2 is fixed on the rotating shaft 9 .

FIG. 5 is a schematic diagram of the structure of one magnetic pole of the rotor, which is composed of permanent magnet blocks 6 , 10 , and 11 .

Claims (4)

1. focused transverse magnetic field permagnetic synchronous motor, comprise shell, U-shaped stator core, annular stator winding, three-sided wall type rotor permanent magnetism magnetic pole, rotor core, rotor field spider, rotating shaft, bearing, it is characterized in that: stator forms for the U-shaped silicon steel plate packing, form the same number of U-iron heart of number of pole-pairs with motor, evenly distribute along circumference, be fixed on the shell; Stator winding is a toroidal coil structure, places the bottom of stator U-shaped core slots; Each has two pole rings mutually rotor, and the position of magnetic pole on two pole rings is interlaced, and mutual deviation 180 degree electrical degrees constitute main pole, and rotor magnetic pole and iron core are bonded on the non-magnetic conduction support of rotor, constitute whole rotor structure.

2. focused transverse magnetic field permagnetic synchronous motor according to claim 1 is characterized in that: the rotor permanent magnetism magnetic pole is the U-shaped three-sided wall type magnetism-collected structure that 3 permanent magnets constitute.

3. focused transverse magnetic field permagnetic synchronous motor according to claim 1 is characterized in that: separate between each phase of described motor, there is not the magnetic circuit coupling, and its number of phases is m, and m can increase according to the needs of output torque, and the m value is 3～9 positive integer.

4. focused transverse magnetic field permagnetic synchronous motor according to claim 1 is characterized in that: stator tooth mutual deviation 2 π/m electrical degree between each phase of described motor.

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