CN218678586U

CN218678586U - Self-starting permanent magnet synchronous motor rotor assembly

Info

Publication number: CN218678586U
Application number: CN202221932454.9U
Authority: CN
Inventors: 李洪磊; 艾运军; 王云志
Original assignee: Taizhou Wangfa Electromechanical Co ltd
Current assignee: Taizhou Wangfa Electromechanical Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2023-03-21
Anticipated expiration: 2032-07-22

Abstract

The utility model provides a self-starting PMSM rotor assembly belongs to motor technical field. The permanent magnet synchronous motor solves the problems that the existing permanent magnet synchronous motor can be started only by externally arranging a current control system, the starting is slow, and the working efficiency of the motor is influenced. This self-starting PMSM rotor assembly, this rotor assembly include transmission shaft and rotor piece, and the rotor piece is a plurality of quantity and stromatolite setting in proper order, and a plurality of cast aluminium gib grooves have been seted up along its orbit to rotor piece periphery, and the shaft hole is seted up at the rotor piece middle part, and this rotor piece is located and is equipped with a plurality of groups magnet steel groove unit between shaft hole and the cast aluminium gib groove, and a plurality of groups magnet steel groove unit distribute around shaft hole circumference, and each magnet steel groove unit comprises a plurality of magnet steel single slots, and is adjacent the magnet steel single slot interval is seted up and is not each other communicate. The utility model discloses a rotor plate's improvement in the motor makes permanent magnet synchronous motor reach efficient, with low costs, can low-voltage start and the fast advantage of start-up speed.

Description

Self-starting permanent magnet synchronous motor rotor assembly

Technical Field

The utility model belongs to the technical field of the motor, a PMSM is related to, in particular to self-starting PMSM rotor assembly.

Background

The starting and running of the permanent magnet synchronous motor are formed by the interaction of magnetic fields generated by a stator winding, a rotor cage winding and a permanent magnet.

As is well known, when a permanent magnet synchronous motor is stationary, current needs to be supplied to a stator winding from the outside to generate a stator rotating magnetic field, the stator rotating magnetic field rotates relative to a rotor to generate current in a cage winding to form a rotor rotating magnetic field, and the rotor starts to rotate at an accelerated speed from the stationary state due to asynchronous torque generated by interaction between the stator rotating magnetic field and the rotor rotating magnetic field.

From the above, the permanent magnet synchronous motor needs to be externally provided with a current control system to start, and the starting is slow, so that the working efficiency of the motor is influenced.

Disclosure of Invention

The utility model aims at the above-mentioned problem that exists among the prior art, provide a self-starting PMSM rotor assembly, through the improvement to rotor plate structure in the rotor assembly, make PMSM reach efficient, with low costs, can low-voltage start and the fast effect of start-up speed.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a self-starting PMSM rotor assembly, this rotor assembly includes transmission shaft and rotor piece, its characterized in that, the rotor piece be a plurality of quantity and stromatolite setting in proper order, rotor piece periphery set up a plurality of cast aluminium conducting bar grooves along its orbit, rotor piece middle part set up the shaft hole, and this rotor piece is located and is equipped with a plurality of groups magnet steel groove unit, a plurality of groups between shaft hole and the cast aluminium conducting bar groove the magnet steel groove unit distributes around shaft hole circumference, each the magnet steel groove unit comprises a plurality of magnet steel single grooves, and is adjacent the magnet steel single groove interval is seted up and is not mutually linked together, all is provided with the magnet steel in every magnet steel single groove.

In the self-starting permanent magnet synchronous motor rotor assembly, a plurality of fixing holes are formed between the shaft hole and the magnetic steel groove unit.

In the self-starting permanent magnet synchronous motor rotor assembly, each group of the magnetic steel single grooves in the magnetic steel groove units are two, and the two magnetic steel single grooves are located on the same horizontal line.

In the self-starting permanent magnet synchronous motor rotor assembly, the outer port of the magnetic steel single groove is provided with an end edge reinforcing groove in an extending mode, and the end edge reinforcing groove is obliquely arranged relative to the magnetic steel single groove.

Compared with the prior art, the self-starting permanent magnet synchronous motor rotor assembly has the following advantages:

1. the cost is saved, an external current control system is not required to be arranged, and the self-starting of the motor is realized;

2. the motor has high starting efficiency and quick starting, and realizes low-voltage starting.

Drawings

Fig. 1 is a schematic view of the structure of a rotor sheet.

Fig. 2 is a schematic structural diagram of the self-starting permanent magnet synchronous motor rotor assembly.

In the figure, 1, a transmission shaft; 2. a rotor sheet; 3. casting an aluminum guide bar groove; 4. a shaft hole; 5. a magnetic steel single groove; 6. a fixing hole; 7. the end edge reinforcing groove.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and fig. 2, this self-starting permanent magnet synchronous motor rotor assembly, this rotor assembly includes transmission shaft 1 and rotor piece 2, rotor piece 2 is a plurality of quantity and the setting of stromatolite in proper order, 2 peripheral edges of rotor piece have seted up a plurality of cast aluminium gib grooves 3 along its orbit, shaft hole 4 is seted up at 2 middle parts of rotor piece, and this rotor piece 2 is located and is equipped with a plurality of groups magnet steel groove unit between shaft hole 4 and the cast aluminium gib groove 3, a plurality of groups magnet steel groove unit distribute around 4 circumference in shaft hole, each magnet steel groove unit comprises a plurality of magnet steel single tank 5, adjacent magnet steel single tank 5 interval is seted up and is each other not intercommunicated, all be provided with the magnet steel in every magnet steel single tank 5.

Further saying in detail, seted up a plurality of fixed orificess 6 between shaft hole 4 and the magnet steel groove unit, 6 circumference of fixed orifices distribute, and set up the mounting in fixed orificess 6 to connect the baffle with the magnet steel location through the mounting.

In this embodiment, the magnetic steel single grooves 5 in each magnetic steel groove unit are two, and the two magnetic steel single grooves 5 are located on the same horizontal line.

In order to improve the performance of the motor, the outer port of the magnetic steel single groove 5 is extended to form an end edge reinforcing groove 7, and the end edge reinforcing groove 7 is obliquely formed relative to the magnetic steel single groove 5.

Compared with the permanent magnet synchronous motor on the market at present, the permanent magnet synchronous motor with the rotor assembly is provided; (1) The self-starting effect of the motor is realized by adopting the cast aluminum winding rotor sheet 2, an external control system can be omitted, and the cost is saved; (2) The sectional type setting of the magnetic steel single groove 5 reduces the cost condition of large-volume magnetic steel caused by the integrated magnetic steel groove, thereby improving the starting efficiency of the motor and realizing low-voltage starting.

In particular, in this instance, the self-starting permanent magnet synchronous motor with the rotor assembly is mainly applied to the field of oxygen increasing machines.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although the terms of the transmission shaft 1, the rotor plate 2, the cast aluminum guide bar groove 3, the shaft hole 4, the magnetic steel single groove 5, the fixing hole 6, the end edge reinforcing groove 7, etc. are used more frequently herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any one of the additional limitations of the present invention.

Claims

1. The utility model provides a self-starting permanent magnet synchronous motor rotor assembly, this rotor assembly includes transmission shaft (1) and rotor piece (2), its characterized in that, rotor piece (2) are a plurality of quantity and set up stromatolite in proper order, rotor piece (2) periphery set up a plurality of cast aluminium gib groove (3) along its orbit, rotor piece (2) middle part set up shaft hole (4), and this rotor piece (2) are located and are equipped with a plurality of groups magnet steel groove unit, a plurality of groups between shaft hole (4) and the cast aluminium gib groove (3) magnet steel groove unit distributes around shaft hole (4) circumference, each magnet steel groove unit comprises a plurality of magnet steel single groove (5), and is adjacent magnet steel single groove (5) interval is seted up and each other is not communicated, all is provided with the magnet steel in every magnet steel single groove (5).

2. The rotor assembly of the self-starting permanent magnet synchronous motor according to claim 1, wherein a plurality of fixing holes (6) are formed between the shaft hole (4) and the magnetic steel slot unit.

3. The rotor assembly of the self-starting permanent magnet synchronous motor according to claim 1, wherein the number of the single magnetic steel slots (5) in each set of the magnetic steel slot units is two, and the two single magnetic steel slots (5) are located on the same horizontal line.

4. The rotor assembly of the self-starting permanent magnet synchronous motor as recited in claim 1, wherein an end edge reinforcing groove (7) extends from an outer port of the single magnetic steel groove (5), and the end edge reinforcing groove (7) is inclined relative to the single magnetic steel groove (5).