" [" shape modular stator-sectional rotor switched reluctance motor
Technical field
The present invention relates to that a kind of " [" shape modular stator-sectional rotor switched reluctance motor belongs to the switched reluctance machines field of electric machinery.
Background technology
Stators for Switched Reluctance Motors and rotor are salient-pole structure, and wherein stator core tooth is wound with concentrated winding on extremely, and rotor is simple solid lamination, no permanent magnetic material and winding.This simple in structure firm, reliability and durability, and switched Reluctance Motor Control is flexible, and fault-tolerant ability is strong, has advantages such as High Temperature And Velocity adaptability, is fit to be applied to fields such as advanced aircraft, automobile and naval vessel.
The winding of switched reluctance machines is extremely gone up around stator core tooth, because winding space is less relatively, winding operation is difficult for automation, and the coiling quality is difficult for guaranteeing, thereby has limited motor properties.And the wind resistance when the salient-pole structure rotor makes high-speed cruising is big, oil cooling but under the condition resistance during high-speed cruising bigger.In order to reduce wind (oil) resistance, can increase rotor slot wedge or packing in rotor, though it is obvious to reduce the effect of wind (oil) resistance,, also increased the complexity of rotor structure to the requirement height of technology.
Three-phase 6/4 structure of present research in the world, the on-off reluctance motor with sectional rotor of three-phase 12/8 structure, rotor is a cylindrical structural, wind (oil) resistance in the time of can obviously reducing the rotor high-speed operation, but each winding of stator that full groove distributes must be crossed over a plurality of stator tooths, each winding overlaps at stator end, and the end of the whole winding of motor is very big, has reduced the utilance of winding and has increased the end benefit of motor, also reduce simultaneously the reliability of motor, made the overall performance of motor reduce.Barrie professor C.Mecrow of University of Newcastle has proposed a kind of monodentate winding sectional rotor switched reluctance motor (SRM) of three-phase 12/10 structure, its characteristics are that stator adopts big or small toothing, each winding of stator no longer adopts full groove distributed winding but directly on each stator canine tooth, make each winding no longer cross over a plurality of stator tooths, the end winding does not have overlapping, winding overhang is little, improved the utilance of winding, but the rotor number of poles that they are many relatively, not only make rotor strength reduce, and revolution step pitch number increases, and the power inverter switching frequency increases, thereby increased the cost of motor and controller.
Summary of the invention
It is big to the present invention seeks to propose a kind of winding winding space, is easy to the automation coiling, and wind during high-speed cruising (oil) resistance is little, the novel switched reluctance motor of low cost of manufacture.
The present invention adopts following technical scheme for achieving the above object:
" [" shape modular stator-sectional rotor switched reluctance motor of the present invention, the rotor core piece and the non-magnetic rotor cover that comprise modular stator core piece, stator winding, segmentation, it is characterized in that: modular stator core piece is " [" shape, stator winding is wrapped on the yoke of modular stator core piece, the rotor core piece of segmentation is embedded in the non-magnetic rotor cover, forms the cylindrical structural rotor.
Of the present invention " major advantage of [" shape modular stator-sectional rotor switched reluctance motor:
(1), stator winding is wrapped on the yoke of modular stator core piece, the winding winding space is big, more number of turns can improve the magnetomotive force of motor.
(2), each modular stator core piece winding separately, winding operation is easy to automation, and can guarantee the consistency of each winding of motor, thereby ensures motor properties.
(3), modular rotor core piece is embedded in the non-magnetic rotor cover, forms the cylindrical structural rotor, wind (oil) resistance during the rotor high-speed operation is little.
(4), saved the yoke part of regular tap reluctance motor radial stator, so of the present invention " [" shape modular stator-sectional rotor switched reluctance motor core material consumption is few, and stator core piece modularization, whole motor low cost of manufacture.
Description of drawings
Fig. 1 is " the axial cross section magnetic line of force schematic diagram of [" shape modular stator-sectional rotor switched reluctance motor, a number in the figure title: 1, stator core piece, 2, stator winding, 3, the rotor core piece, 4, non-magnetic rotor cover of the present invention.
Fig. 2 is three-phase 6/4 structure of the present invention " schematic diagram of [" shape modular stator-sectional rotor switched reluctance motor, a number in the figure title: 1, stator core piece, 2, stator winding, 3, the rotor core piece, 4, non-magnetic rotor cover.
Fig. 3 is of the present invention four 8/6 structure " schematic diagram of [" shape modular stator-sectional rotor switched reluctance motor, number in the figure titles: 1, stator core piece, 2, stator winding, 3, the rotor core piece, 4, non-magnetic rotor cover mutually.
Fig. 4 is three-phase 12/8 structure of the present invention " schematic diagram of [" shape modular stator-sectional rotor switched reluctance motor, a number in the figure title: 1, stator core piece, 2, stator winding, 3, the rotor core piece, 4, non-magnetic rotor cover.
Embodiment
Below in conjunction with accompanying drawing technical scheme of the present invention is elaborated:
It is of the present invention that " [" shape modular stator-sectional rotor switched reluctance motor can be structures such as three-phase 6/4, four phase 8/6 or three-phase 12/8, and its operation principle is identical.
It is as shown in Figure 1, of the present invention that " [" shape modular stator-sectional rotor switched reluctance motor comprises that the rotor core piece 3 of modular stator core piece 1, stator winding 2, segmentation and non-magnetic rotor overlap 4.The rotor core piece 3 of segmentation is embedded in the non-magnetic rotor cover 4, forms the cylindrical structural rotor.Modular stator core piece is that " [" shape, stator winding are wrapped on the yoke of modular stator core piece 1.Each phase winding connects by external circuit and passes to electric current in the self-induction rising stage of each phase winding, magnetic flux is successively through the yoke of stator core piece 1, the last tooth of stator core piece 1,3 of stator core piece 1 and rotor core pieces are gone up air gap, rotor core piece 3, the lower tooth of 3 following air gaps of stator core piece 1 and rotor core piece and stator core piece 1 forms the loop, and rotor is produced active force, the running of dragging motor rotor drives load running.
Figure 2 shows that three-phase 6/4 structure of the present invention " schematic diagram of [" shape modular stator-sectional rotor switched reluctance motor comprises the rotor core piece 3 of modular stator core piece 1, stator winding 2, segmentation and non-magnetic rotor cover 4.Modular stator core piece 1 is that " [" shape is formed by silicon steel plate stacking, totally 6, radially alternate 60 ° of placements, 4 rotor core pieces 3 also form by silicon steel plate stacking, and radially alternate respectively 90 ° are embedded in the non-magnetic rotor cover 4, form the cylindrical structural rotor.Twine a stator winding 2 on the yoke of each modular stator core piece 1, totally 6 stator winding 2, two stator winding 2 serial or parallel connections on two relative modular stator core pieces 1 are a phase, totally three phase windings.Each phase winding connects by external circuit and passes to electric current in the self-induction rising stage of each phase winding, magnetic flux is successively through the yoke of stator core piece 1, the last tooth of stator core piece 1,3 of stator core piece 1 and rotor core pieces are gone up air gap, rotor core piece 3, the lower tooth of 3 following air gaps of stator core piece 1 and rotor core piece and stator core piece 1 forms the loop, and rotor is produced active force, the running of dragging motor rotor drives load running.
Figure 3 shows that of the present invention four mutually 8/6 structure " schematic diagram of [" shape modular stator-sectional rotor switched reluctance motor comprises the rotor core piece 3 and the non-magnetic rotor cover 4 of modular stator core piece 1, stator winding 2, segmentation.Modular stator core piece 1 is that " [" shape is formed by silicon steel plate stacking, totally 8, radially alternate 45 ° of placements, 6 rotor core pieces 3 also form by silicon steel plate stacking, and radially alternate respectively 60 ° are embedded in the non-magnetic rotor cover 4, form the cylindrical structural rotor assembly.Twine a stator winding 2 on the yoke of each modular stator core piece 1, totally 8 stator winding 2, two stator winding 2 serial or parallel connections on two relative modular stator core pieces 1 are a phase, totally four phase windings.Each phase winding connects by external circuit and passes to electric current in the self-induction rising stage of each phase winding, magnetic flux is successively through the yoke of stator core piece 1, the last tooth of stator core piece 1,3 of stator core piece 1 and rotor core pieces are gone up air gap, rotor core piece 3, the lower tooth of 3 following air gaps of stator core piece 1 and rotor core piece and stator core piece 1 forms the loop, and rotor is produced active force, the running of dragging motor rotor drives load running.
Figure 4 shows that three-phase 12/8 structure of the present invention " schematic diagram of [" shape modular stator-sectional rotor switched reluctance motor comprises the rotor core piece 3 of modular stator core piece 1, stator winding 2, segmentation and non-magnetic rotor cover 4.Modular stator core piece 1 is that " [" shape is formed by silicon steel plate stacking, totally 12, radially alternate 30 ° of placements, 8 rotor core pieces 3 also form by silicon steel plate stacking, and radially alternate respectively 45 ° are embedded in the non-magnetic rotor cover 4, form the cylindrical structural rotor assembly.Twine a stator winding 2 on the yoke of each modular stator core piece 1, totally 12 stator winding 2, be separated by on the circumference four stator winding 2 on four modular stator core pieces 1 of 90 °, serial or parallel connection or two strings two also are connected to a phase, totally three phase windings.Each phase winding connects by external circuit and passes to electric current in the self-induction rising stage of each phase winding, magnetic flux is successively through the yoke of stator core piece 1, the last tooth of stator core piece 1,3 of stator core piece 1 and rotor core pieces are gone up air gap, rotor core piece 3, the lower tooth of 3 following air gaps of stator core piece 1 and rotor core piece and stator core piece 1 forms the loop, and rotor is produced active force, the running of dragging motor rotor drives load running.