CN202190196U

CN202190196U - Permanent magnet motor adopting novel structure

Info

Publication number: CN202190196U
Application number: CN2011203112693U
Authority: CN
Inventors: 徐荣祖
Original assignee: Wuxi New Great Power Electrical Machine Co Ltd
Current assignee: Wuxi New Great Power Electrical Machine Co Ltd
Priority date: 2011-08-25
Filing date: 2011-08-25
Publication date: 2012-04-11
Anticipated expiration: 2021-08-25

Abstract

The utility model discloses a permanent magnet motor adopting a novel structure, which comprises a shaft, a housing and a permanent magnet motor winding in the housing, wherein the permanent magnet motor winding comprises a permanent magnet rotor arranged on the shaft and a permanent magnet stator corresponding to the permanent magnet rotor; the housing is also internally provided with a starting winding, and the starting winding comprises a starting excitation rotor arranged on the shaft and a starting excitation stator corresponding to the starting excitation rotor; the permanent magnet motor is connected with a power supply control system, so that the starting winding is firstly powered on to drive the permanent magnet rotor to rotate, then the permanent magnet motor winding is powered on, simultaneously, the starting winding is powered off, so that the permanent magnet rotor and the starting excitation rotor simultaneously rotate to start the permanent magnet motor, and starting current can be controlled under the twice of the rated current; and the power supply control system replaces a transducer for starting the permanent magnet motor, so that the cost is saved. Compared with the prior art, the permanent magnet motor has the advantages that the starting is easy, and the cost is low.

Description

A kind of magneto that adopts new structure

Technical field

The utility model relates to a kind of motor, relates in particular to a kind of magneto that adopts new structure.

Background technology

The Nd-Fe-Bo permanent magnet material that last century, the eighties was come out causes extensive concern both domestic and external with its superior magnetic property, compares with traditional asynchronous machine; Adopt the rare-earth permanent-magnet electric machine of neodymium iron boron as excitation source, it is all improving a lot aspect efficient, the power factor (PF), and energy-saving effect is fairly obvious; It is a kind of up-and-coming energy-efficient product; At present the single-machine capacity of rare-earth permanent-magnet electric machine is to large scale development, and is very big but weak point is the starting current of rare-earth permanent-magnet electric machine, is generally 8～9 times of rated current; Corresponding problem is to need the more powerful transformer of configuration with it, makes cost also rise thereupon.

Chinese patent publication number CN 201252453Y discloses a kind of dual rotor permanent magnetic motor; Through p-m rotor being installed on arbor and being started excitation rotor; And correspondence is provided with permanent-magnet stator and starts the excitation stator; Start p-m rotor simultaneously and start excitation rotor, starting excitation rotor can give bigger moment of torsion of arbor moment, thereby reaches the starting current that reduces p-m rotor.This way has following shortcoming: when former starting current was a relative smaller value, utilization the method can realize reducing starting current, but when former starting current itself is just big, and starting p-m rotor simultaneously is very difficult realization with starting excitation rotor; The frequency converter that uses costs an arm and a leg, and cost is higher.

The utility model content

The purpose of the utility model is to address the above problem provides a kind of magneto that adopts new structure, has to start easily and the low advantage of cost.

The purpose of the utility model is to realize through following technical scheme:

A kind of magneto that adopts new structure; Comprise the magneto winding in arbor and housing and the housing, said magneto winding comprises p-m rotor and the corresponding with it permanent-magnet stator that is arranged on the arbor, also is provided with the startup winding in the said housing; Said startup winding comprises startup excitation rotor and the corresponding with it startup excitation stator that is arranged on the arbor; Said magneto connects an electric power supply control system, makes to start winding energising earlier, drives the p-m rotor rotation; Give the energising of magneto winding again, start the winding outage simultaneously.

Said p-m rotor all adopts the cast aluminium iron core with the startup excitation rotor.

The beneficial effect of the utility model is: give earlier through electric power supply control system to start the winding energising, make to start the excitation rotor rotation, drive p-m rotor and rotate; Subsequently, the energising of magneto winding starts the winding outage simultaneously; Make p-m rotor and startup excitation rotor rotate in the lump, accomplish the startup of magneto, starting current can be controlled in below the twice of rated current; And electric power supply control system has substituted the frequency converter that magneto starts, and has practiced thrift cost.Contrast prior art, this magneto have the easy and low advantage of cost of startup.

Description of drawings

According to accompanying drawing and embodiment the utility model is done further explain below.

Fig. 1 is the described a kind of structural representation that adopts the magneto of new structure of the utility model.

Among the figure:

1, housing; 2, arbor; 3, p-m rotor; 4, permanent-magnet stator; 5, start excitation rotor; 6, start the excitation stator; 7, electric power supply control system.

Embodiment

Among the embodiment as shown in Figure 1; The described a kind of magneto that adopts new structure of the utility model; Comprise arbor 2 and housing 1; The magneto winding is set in the housing 1 and starts winding, the magneto winding comprises p-m rotor 3 and the corresponding with it permanent-magnet stator 4 that is arranged on the arbor 2, starts winding and comprises startup excitation rotor 5 and the corresponding with it startup excitation stator 6 that is arranged on the arbor 2; And p-m rotor 3 all adopts the cast aluminium iron core with startup excitation rotor 5, and magneto connects an electric power supply control system 7.

Give the energising of startup winding earlier through electric power supply control system 7, make to start excitation rotor 5 rotations, drive p-m rotor 3 rotates; Subsequently, the energising of magneto winding starts the winding outage simultaneously; Make p-m rotor 3 and startup excitation rotor 5 rotate in the lump, accomplish the startup of magneto, starting current can be controlled in below the twice of rated current; And electric power supply control system 7 has substituted the frequency converter that magneto starts; Practiced thrift cost, the contrast prior art, this magneto has the easy and low advantage of cost of startup.

Claims

1. magneto that adopts new structure; Comprise the magneto winding in arbor (2) and housing (1) and the housing (1), said magneto winding comprises p-m rotor (3) and the corresponding with it permanent-magnet stator (4) that is arranged on the arbor (2), and it is characterized in that: said housing also is provided with the startup winding in (1); Said startup winding comprises startup excitation rotor (5) and the corresponding with it startup excitation stator (6) that is arranged on the arbor (2); Said magneto connects an electric power supply control system (7), makes to start winding energising earlier, drives p-m rotor (3) rotation; Give the energising of magneto winding again, start the winding outage simultaneously.

2. a kind of magneto that adopts new structure according to claim 1 is characterized in that: said p-m rotor (3) and startup excitation rotor (5) all adopt the cast aluminium iron core.