CN201750389U

CN201750389U - Speed regulation system of switched reluctance motor

Info

Publication number: CN201750389U
Application number: CN201020268693XU
Authority: CN
Inventors: 李成; 董毅鹏
Original assignee: WEIFANG KUANGYUAN ELECTRICAL APPLIANCE CO Ltd
Current assignee: WEIFANG KUANGYUAN ELECTRICAL APPLIANCE CO Ltd
Priority date: 2010-07-23
Filing date: 2010-07-23
Publication date: 2011-02-16
Anticipated expiration: 2020-07-23

Abstract

The utility model discloses a speed regulation system of a switched reluctance motor and is characterized in that: the system includes the switched reluctance motor, a position sensor, a controller, and a power inverter which are electrically connected with one another in turn; and the position sensor is fixed in a cavity of a rear end cover of the switched reluctance motor. Through regulating a turn-on angle, a turn-off angle, voltage, and current of the switched reluctance motor, mechanical characteristics based on different load requirements can be obtained; the control is simple and flexible; and soft start and four-quadrant operation can be realized easily. In addition, the switched reluctance motor has the advantages of simple structure, low cost, and reliable operation and is suitable for various severe and high temperature even strong vibration environments; moreover, a speed regulation range is wide, and high efficiency can be achieved at a wide range of rotating speed and power.

Description

SRD

Technical field

The utility model relates to a kind of electric motor system, specifically, relates to a kind of SRD.

Background technology

Motor is commonly called as motor, is a kind of electric energy to be changed into mechanical energy, and can re-uses mechanical energy and produce kinetic energy, is used for driving the electric equipment of other devices.The speed of motor is changeless, but in actual use, will therefore carry out the frequency conversion transformation and be necessary with lower or higher speed operation sometimes.Current widely used frequency-conversion and speed-regulation motor changes equipment input voltage frequency by frequency converter, reaches the purpose of energy-saving speed regulating.Though frequency-conversion and speed-regulation motor can be realized speed governing, narrow because of its speed adjustable range, efficient is low, specific volume power is little, so that its speed adjusting performance is relatively poor, obtain the governor control characteristics close with DC motor, needs to adopt complicated vector control system.In addition, the cost of frequency-conversion and speed-regulation motor is higher, poor reliability.

Summary of the invention

The technical problems to be solved in the utility model is to overcome above-mentioned defective, provide that a kind of cost is low, speed-regulating range width, control flexibly, reliable operation, in the rotating speed of broadness and power bracket, all have high efficiency SRD.

For addressing the above problem, the technical scheme that the utility model adopted is:

A kind of SRD, it is characterized in that: this system comprises switched reluctance motor, position transducer, controller and power inverter, and they are electrically connected according to the order of switched reluctance motor-position transducer-controller-power inverter-switched reluctance motor; Described position transducer is fixed in the cavity of rear end cap of switched reluctance motor.

Say further:

Described switched reluctance motor comprises laminated stator, lamination armature, winding, front end housing, rear end cap and arbor, and winding is wrapped on the laminated stator, and it goes out the outer circumferential side that spool is located at rear end cap; Front end housing is by the front end of screw at laminated stator, from front end encapsulation laminated stator and lamination armature; Rear end cap is by the rear end of screw at laminated stator, from rear end encapsulation laminated stator and lamination armature; Running through riveted joint on the lamination armature has at least one rivet, and also running through riveted joint on the laminated stator has at least one rivet; Arbor is connected with lamination armature by bearing; Be provided with micro slide in the cavity of rear end cap, micro slide is sleeved on the arbor of lamination armature rear end; Position transducer is fixed on the micro slide.

Described position transducer is a hall element sensor.

Turn-on angle, the pass angle of rupture, the voltage and current of the utility model by adjusting switched reluctance motor, can obtain the mechanical property of different loads requirement, control is simple, flexible, can easily realize soft start and four quadrant running, and, because this is a kind of control mode of pure logic, is easy to intellectuality.In addition, switched reluctance motor is simple in structure, cost is low, and reliable operation can be applicable to various abominable, high temperature even strong motion environment, and speed-regulating range width all has high efficiency in the rotating speed of broadness and power bracket.

The utility model is described in further detail below in conjunction with the drawings and specific embodiments.

Description of drawings

Fig. 1 is the connection block diagram of SRD described in the utility model;

Fig. 2 is the structural representation of switched reluctance motor in the utility model.

Among the figure: the 1-rear end cap; The 2-position transducer; The 3-micro slide; The 4-arbor; The 5-bearing; The 6-front end housing; The 7-screw; The 8-rivet; The 9-lamination armature; The 10-laminated stator; The 11-screw; 12-goes out spool.

Embodiment

Embodiment:

A kind of SRD, as shown in Figure 1, comprise switched reluctance motor, position transducer, controller and power inverter, they are electrically connected according to the order of switched reluctance motor-position transducer-controller-power inverter-switched reluctance motor.

As shown in Figure 2, described switched reluctance motor comprises laminated stator 10, lamination armature 9, winding, front end housing 6, rear end cap 1 and arbor, and winding is wrapped on the laminated stator 10, and it goes out the outer circumferential side that spool 12 is located at rear end cap 1.

Front end housing 6 is fixed on the front end of laminated stator 10 by screw 7, from front end encapsulation laminated stator 10 and lamination armature 9; Rear end cap 1 is fixed on the rear end of laminated stator 10 by screw 11, from rear end encapsulation laminated stator 10 and lamination armature 9; Running through riveted joint on the lamination armature 9 has at least one rivet 8, and also running through riveted joint on the laminated stator 10 has at least one rivet; Arbor is connected with lamination armature 9 by bearing 5; Be provided with micro slide 3 in the cavity of rear end cap 1, micro slide 3 is sleeved on the arbor 4 of lamination armature 9 rear ends; Position transducer 2 is fixed on the micro slide 3.In the present embodiment, what position transducer 2 was selected for use is hall element sensor.

The utility model operation principle is as follows:

Electric energy is input to switched reluctance motor by power inverter, and switched reluctance motor connects load, and provides power for it.Controller is according to the relative position information between detected stator of position transducer and the rotor, in conjunction with given action command (forward or reverse), and the main switch element of corresponding stator phase winding in the actuating switch reluctance motor.There is electric current to flow through in the corresponding phase winding, produces magnetic field.Magnetic field always is tending towards " magnetic resistance minimum " and the magnetoresistive electromagnetic torque that produces, makes rotor turn to " extremely to the utmost point " position.When rotor forwarded the rotor magnetic pole that is attracted to and coincides (equilbrium position) mutually with stator is excitatory, electromagnetic torque disappeared.At this moment, controller is according to new positional information, when stator and rotor are about to reach the equilbrium position, gives an order to power inverter, turn-offs the main switch element of current phase, and next phase of conducting, then rotor can rotate to next equilbrium position again; Like this, controller is pressed certain control logic main switch of the corresponding phase winding of turn-on and turn-off continuously according to corresponding positional information, just can produce the continuous same electromagnetic torque that turns to, and makes rotor operation continuously under certain rotating speed; Control the switching moment of each phase winding and the size of winding current according to certain control strategy again, just system is moved in the best condition.

Claims

1. SRD, it is characterized in that: this system comprises switched reluctance motor, position transducer, controller and power inverter, and they are electrically connected according to the order of switched reluctance motor-position transducer-controller-power inverter-switched reluctance motor; Described position transducer (2) is fixed in the cavity of rear end cap (1) of switched reluctance motor.

2. SRD according to claim 1, it is characterized in that: described switched reluctance motor comprises laminated stator (10), lamination armature (9), winding, front end housing (6), rear end cap (1) and arbor, winding is wrapped on the laminated stator (10), and it goes out the outer circumferential side that spool (12) is located at rear end cap (1); Front end housing (6) is fixed on the front end of laminated stator (10) by screw (7), from front end encapsulation laminated stator (10) and lamination armature (9); Rear end cap (1) is fixed on the rear end of laminated stator (10) by screw (11), from rear end encapsulation laminated stator (10) and lamination armature (9); Running through riveted joint on the lamination armature (9) has at least one rivet (8), and also running through riveted joint on the laminated stator (10) has at least one rivet; Arbor is connected with lamination armature (9) by bearing; Be provided with micro slide (3) in the cavity of rear end cap (1), micro slide (3) is sleeved on the arbor (4) of lamination armature (9) rear end; Position transducer (2) is fixed on the micro slide (3).

3. SRD according to claim 2 is characterized in that: described position transducer (2) is a hall element sensor.