CN101478215A - Switch reluctance motor used for open-phase and fault-tolerance - Google Patents
Switch reluctance motor used for open-phase and fault-tolerance Download PDFInfo
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- CN101478215A CN101478215A CNA2008101565441A CN200810156544A CN101478215A CN 101478215 A CN101478215 A CN 101478215A CN A2008101565441 A CNA2008101565441 A CN A2008101565441A CN 200810156544 A CN200810156544 A CN 200810156544A CN 101478215 A CN101478215 A CN 101478215A
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- 238000004804 winding Methods 0.000 claims abstract description 82
- 239000003990 capacitor Substances 0.000 claims abstract description 3
- 230000010349 pulsation Effects 0.000 abstract description 9
- 230000000630 rising effect Effects 0.000 abstract description 3
- 230000002950 deficient Effects 0.000 description 10
- 238000004088 simulation Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
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Abstract
The invention discloses a switch magnetic resistance electric motor for default phase and fault-tolerance, which comprises a stator, a rotor without winding, and a power inverter main circuit. The power inverter main circuit comprises an asymmetrical half-bridge circuit, a power supply and a storage capacitor; the winding below each stator is led out to form a phase winding, and each phase winding is connected with the phase asymmetrical half-bridge circuit corresponding to the power inverter main circuit. The individual phase windings are connected with a current during self induced rising stage. Therefore the connection model of windings is changed to ensure that the average torque output by the switch magnetic resistance electric motor is more than that output by the electric motor of the normal connection model of windings during default phase run, the output torque pulsation is reduced and the default phase and fault-tolerance capacity of the electric motor system is improved.
Description
Technical field
The present invention relates to the switched reluctance machines that is used for the phase-lacking fault-tolerant operation in motor driven systems field.
Background technology
Switched reluctance machines is the heterogeneous structure motor, and a little less than the alternate coupling, when open-phase fault took place, motor allowed phase-lacking fault-tolerant operation work.As 6/4 structure and 12/8 structure switch magnetic resistance motor is three phase electric machine, lacks one when moving mutually, because this no longer exerts oneself mutually, and when incentive condition is constant, 2/3 when the output average torque is about operate as normal; When lacking two-phase operation, 1/3 when the output average torque is about operate as normal; 8/6 structure switch magnetic resistance motor is four phase motors, lacks one when moving mutually, because this no longer exerts oneself mutually, and when incentive condition is constant, 3/4 when the output average torque is about operate as normal; When lacking two-phase operation, 1/2 when the output average torque is about operate as normal; The main difficulty that exists during the switched reluctance machines phase-deficient operation is that motor is difficult to starting, and after the phase shortage running, its output average torque must reduce, and torque pulsation simultaneously must become big.
Summary of the invention
The technical problem to be solved in the present invention is to propose a kind of effective switched reluctance machines that turns round when phase shortage.
A kind of switched reluctance machines that is used for phase-lacking fault-tolerant, comprise stator, no wound rotor and power inverter main circuit, the power inverter main circuit is made of asymmetry half-bridge circuit, power supply and storage capacitor, winding under each stator salient poles is drawn and is constituted a phase winding, corresponding phase asymmetry half-bridge circuit connection in each phase winding and the power inverter main circuit.
A kind of phase-lacking fault-tolerant switched reluctance machines drive system that is used for of the present invention still has higher average torque output when the motor phase-lacking fault-tolerant moves, less torque pulsation has improved electric system phase-lacking fault-tolerant ability.
Description of drawings
Fig. 1: (a) embodiment of the invention switched reluctance machines axial, cross-sectional view,
(b) embodiment of the invention Stators for Switched Reluctance Motors winding connection mode;
Fig. 2: the embodiment of the invention 12/8 structure switch magnetic resistance motor is with 12 phase asymmetrical half-bridge power converter circuit schematic diagrams.
Fig. 3: instantaneous torque when motor normally moves and average torque simulation result figure;
Fig. 4: instantaneous torque and average torque simulation result figure when the normal three-phase connection of 12/8 structure switch magnetic resistance motor winding lacks first phase winding A operation;
Fig. 5: instantaneous torque and average torque simulation result figure when embodiment of the invention motor lacks first phase winding A1 operation;
Fig. 6: instantaneous torque and average torque simulation result figure when the normal three-phase connection of 12/8 structure switch magnetic resistance motor winding lacks the first phase winding A and second phase winding B operation;
Fig. 7: instantaneous torque and average torque simulation result figure when embodiment of the invention motor lacks the first phase winding A1, the 4th phase winding A2 operation.
Embodiment
As shown in Figure 1, be example with 12/8 structure switch magnetic resistance motor.
Described 12/8 structure switch magnetic resistance motor, comprise stator, no wound rotor and power inverter main circuit, stator and rotor all are salient-pole structure, be embedded with armature winding under the stator salient poles, the first stator salient poles winding a1 draws and constitutes the first phase winding A1, the second stator salient poles winding b1 draws and constitutes the second phase winding B1, the 3rd stator salient poles winding c1 draws and constitutes third phase winding C1, the 4th stator salient poles winding a2 draws and constitutes the 4th phase winding A2, the 5th stator salient poles winding b2 draws and constitutes the 5th phase winding B2, the 6th stator salient poles winding c2 draws and constitutes the 6th phase winding C2, the 7th stator salient poles winding a3 draws and constitutes the 7th phase winding A3, the 8th stator salient poles winding b3 draws and constitutes the 8th phase winding B3, the 9th stator salient poles winding c3 draws and constitutes the 9th phase winding C3, the tenth stator salient poles winding a4 draws and constitutes the tenth phase winding A4, the 11 stator salient pole winding b4 draws and constitutes the 11 phase winding B4, the 12 stator salient poles winding c4 draws and constitutes the tenth two-phase winding C4.
As shown in Figure 2, motor has 12 phase windings, the first phase winding A1 connects the first phase asymmetry half-bridge circuit, the second phase winding B1 connects the second phase asymmetry half-bridge circuit, third phase winding C1 connects the third phase asymmetry half-bridge circuit, the 4th phase winding A2 connects the 4th phase asymmetry half-bridge circuit, the 5th phase winding B2 connects the 5th phase asymmetry half-bridge circuit, the 6th phase winding C2 connects the 6th phase asymmetry half-bridge circuit, the 7th phase winding A3 connects the 7th phase asymmetry half-bridge circuit, the 8th phase winding B3 connects the 8th phase asymmetry half-bridge circuit, the 9th phase winding C3 connects the 9th phase asymmetry half-bridge circuit, the tenth phase winding A4 connects the tenth phase asymmetry half-bridge circuit, and the 11 phase winding B4 connects the 11 phase asymmetry half-bridge circuit, and the tenth two-phase winding C4 connects the tenth two-phase asymmetry half-bridge circuit.
When one broke down mutually, this no longer exerted oneself mutually, and other phase operate as normal have 11 phase operate as normal this moment, under the constant situation of incentive condition, when the output average torque is about operate as normal 11/12 of average torque; When appointing a two-phase to break down, this two-phase is no longer exerted oneself, and other phase operate as normal have 10 phase operate as normal this moment, under the constant situation of other conditions, when the output average torque is about operate as normal 10/12 of average torque.
Utilize JAMG software to set up the FEM (finite element) model of 12/8 structure switch magnetic resistance motor field road coupling, under the equal incentive condition, the torque characteristics of analogue system when normal operation and phase-deficient operation.
Instantaneous torque and average torque simulation result figure when Fig. 3 normally moves for motor, average torque was 1.74Nm when motor normally moved.
Instantaneous torque and average torque simulation result figure when lacking the first phase winding A operation when Fig. 4 is the normal three-phase connection of motor windings, dotted line represents on average to export torque among the figure, is 1.12Nm.
Output torque when Fig. 5 lacks the first phase winding A1 for the present invention 12/8 structure switch magnetic resistance motor embodiment, dotted line represents on average to export torque among the figure, is 1.61Nm.
Comparison diagram 4 and Fig. 5 as can be known, when the present invention 12/8 structure switch magnetic resistance motor embodiment lacks an average output torque ratio three when moving mutually and is connected lack one mutually the average output torque of operation increase, and the output torque pulsation reduces.
Instantaneous torque and average torque simulation result figure when lacking the first phase winding A and the second phase winding B operation when Fig. 6 is the normal three-phase connection of motor windings, dotted line represents on average to export torque among the figure, is 0.504Nm.
Output torque when Fig. 7 lacks the first phase winding A1, the 4th phase winding A2 for the present invention 12/8 structure switch magnetic resistance motor embodiment 1.Dotted line represents on average to export torque among the figure, is 1.50Nm.
Comparison diagram 6 and Fig. 7 as can be known, the average output torque of the scarce two-phase operation when the average output torque ratio three when the present invention 12/8 structure switch magnetic resistance motor embodiment lacks two-phase operation is connected increases, and the output torque pulsation reduces.
For 6/4 structure switch magnetic resistance motor, the winding of each utmost point is drawn formation one phase winding, each phase winding passes to electric current by the corresponding circuitry phase connection work of asymmetrical half-bridge power inverter in the rising stage of each phase winding self-induction, and motor has 6 phase windings like this.When incentive condition is constant, 5/6 of output average torque when the output average torque of motor when scarce one moves mutually is about normal operation, 4/6 of output average torque when the output average torque of motor when lacking two-phase operation is about normal the operation, the output average torque of motor when phase-deficient operation during than normal three-phase winding connection mode the output average torque during phase-deficient operation increase, the torque pulsation when phase-deficient operation during than normal three-phase winding connection mode the torque pulsation during phase-deficient operation reduce.
For 8/6 structure switch magnetic resistance motor, the winding of each utmost point is drawn formation one phase winding, each phase winding passes to electric current by the corresponding circuitry phase connection work of asymmetrical half-bridge power inverter in the rising stage of each phase winding self-induction, and motor has 8 phase windings like this.When incentive condition is constant, 7/8 of output average torque when the output average torque of motor when scarce one moves mutually is about operate as normal, motor when the output average torque that lacks two phase times is about operate as normal 6/8, the output average torque of motor when phase-deficient operation during than the normal four phase winding modes of connection output average torque during phase-deficient operation increase, the torque pulsation when phase-deficient operation during than the normal four phase winding modes of connection torque pulsation during phase-deficient operation reduce.
Claims (1)
1. a switched reluctance machines that is used for phase-lacking fault-tolerant comprises stator, no wound rotor and power inverter main circuit, the power inverter main circuit is made of asymmetry half-bridge circuit, power supply and storage capacitor, it is characterized in that: the winding under each stator salient poles is drawn and is constituted a phase winding, corresponding one asymmetry half-bridge circuit connection mutually in each phase winding and the power inverter main circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101565441A CN101478215A (en) | 2008-09-28 | 2008-09-28 | Switch reluctance motor used for open-phase and fault-tolerance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101565441A CN101478215A (en) | 2008-09-28 | 2008-09-28 | Switch reluctance motor used for open-phase and fault-tolerance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101478215A true CN101478215A (en) | 2009-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101565441A Pending CN101478215A (en) | 2008-09-28 | 2008-09-28 | Switch reluctance motor used for open-phase and fault-tolerance |
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| CN (1) | CN101478215A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242745A (en) * | 2014-08-27 | 2014-12-24 | 中国矿业大学 | Torque ripple three-level suppression method for four-phase switch reluctance motor |
| CN105356703A (en) * | 2015-10-28 | 2016-02-24 | 南京航空航天大学 | Fault tolerance system of six-phase switch reluctance motor and control method thereof |
-
2008
- 2008-09-28 CN CNA2008101565441A patent/CN101478215A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104242745A (en) * | 2014-08-27 | 2014-12-24 | 中国矿业大学 | Torque ripple three-level suppression method for four-phase switch reluctance motor |
| CN104242745B (en) * | 2014-08-27 | 2016-10-26 | 中国矿业大学 | A kind of four phase switch reluctance motor torque ripple three level suppressing method |
| CN105356703A (en) * | 2015-10-28 | 2016-02-24 | 南京航空航天大学 | Fault tolerance system of six-phase switch reluctance motor and control method thereof |
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Open date: 20090708 |