CN104953920A - SRM (switched reluctance motor) power topological structure for realizing full-voltage bipolar control - Google Patents
SRM (switched reluctance motor) power topological structure for realizing full-voltage bipolar control Download PDFInfo
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- CN104953920A CN104953920A CN201510395156.9A CN201510395156A CN104953920A CN 104953920 A CN104953920 A CN 104953920A CN 201510395156 A CN201510395156 A CN 201510395156A CN 104953920 A CN104953920 A CN 104953920A
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Abstract
The invention discloses an SRM (switched reluctance motor) power topological structure for realizing full-voltage bipolar control. The structure comprises a DC (direct current) power supply V, a power supply filter capacitor C, (n+1) pairs of power switch tubes and one N-phase SRM, wherein the n<th> pair of power switch tubes comprises a power switch tube Sn1 and a power switch tube Sn2, and an emitter of the power switch tube Sn1 and a collector of the power switch tube Sn2 are connected at an electric contact Pn; the positive pole of the DC power supply V is connected with a collector of the power switch tube Sn1, the negative pole of the DC power supply V is connected with an emitter of the power switch tube Sn2, and the power supply filter capacitor C is connected between the positive and negative poles of the DC power supply V in parallel; two ends of an n<th>-phase winding of the SRM are connected with the electric contact Pn and an electric contact P(N+1) respectively. With the adoption of the topological structure, the problems that existing N-phase bridge type power topological structures control N-phase SRMs and whole bus voltage cannot be loaded on each phase winding, accordingly, the efficiency is low, the speed is slower and the like are solved.
Description
Technical field
The present invention relates to a kind of switched reluctance machines power topology realizing total head Bipolar control, belong to motor manufacturing and control technology.
Background technology
Along with the development of power electronic device technology, microelectric technique and automatic control technology, the rise in price especially caused by rare earth permanent-magnetic material export restrictions, the application of switched reluctance machines will be more and more extensive.On the other hand, under the special operation environment that some deep spaces, deep-sea, day and night temperature are large, the magnetic property of permanent magnet is unstable, is unfavorable for the application of magneto in above-mentioned field.And switched reluctance machines is as a kind of electro-magnetic motor, its rotor folds into double-salient-pole structure by ordinary silicon steel disc pressure, on rotor both without permanent magnet also without winding, stator only has centralized winding coil, according to " magnetic resistance is minimum " principle work.Switched reluctance machines manufacture is simple, cost is low, structure is firm, volume is little, lightweight, heat radiation is convenient.In industrial governing system field, demonstrate powerful competitiveness, also held out broad prospects in electric automobile, household electrical appliance, textile machine, electric drive etc.But, an important technology bottleneck of limit switch reluctance motor governing system further genralrlization application as shown in Figure 1, the every phase winding of asymmetric bridge power converter topology of existing three-phase switch reluctance machine adopts two main switches, two unhurried current diodes, more than ordinary three-phase synchronous power inverter six electric power unhurried current diodes.Therefore, complexity and the cost of power converter of switch reluctance motor is added.In addition, power converter of switch reluctance motor there is no a unified standard, cannot large-scale production, and these all considerably increase development cost and the hardware cost of power converter of switch reluctance motor.In recent years, there is scholar to propose power topological transformation device as shown in Figure 2 to replace asymmetric bridge power converter, solve that traditional three-phase switch reluctance machine asymmetric bridge power converter power topology is complicated, cost is high, without unified standard and cannot the shortcoming of large-scale production.But, adopt the power topology control switch reluctance motor shown in Fig. 2 also can bring other shortcoming, such as only to load half busbar voltage on every phase winding of switched reluctance machines, the shortcoming such as cause current-rising-rate di/dt to diminish, speed responsive is restricted, overload capacity is poor, efficiency is low.
Summary of the invention
Goal of the invention: in order to overcome the deficiencies in the prior art, the invention provides a kind of switched reluctance machines power topology realizing total head Bipolar control, to replace original three-phase bridge power topology, make the power converter of switch reluctance motor based on Bipolar control can realize loading in busbar voltage total head to every phase winding.
Technical scheme: for achieving the above object, the technical solution used in the present invention is:
Realize a switched reluctance machines power topology for total head Bipolar control, comprise DC power supply V, power filtering capacitor C, (N+1) to power switch pipe and a N phase switch reluctance motor SRM; N-th pair of power switch pipe comprises power switch tube S
n1and power switch tube S
n2, power switch tube S
n1emitter and power switch tube S
n2collector electrode be connected on electric contact P
n, n=1,2 ..., N, (N+1); The positive pole of DC power supply V connects power switch tube S simultaneously
n1collector electrode, the negative pole of DC power supply V connects power switch tube S simultaneously
n2emitter, power filtering capacitor C is connected in parallel between the positive and negative polarities of DC power supply V; The two ends of n-th phase winding of switched reluctance machines SRM respectively with electric contact P
nwith electric contact P
(N+1)connect.
Switched reluctance machines power topology of the present invention, can realize (N+1) individual brachium pontis that total head Bipolar control needs.Under now N-phase electric machine can be operated in total head Bipolar current control mode, and under (N+1) phase motor can also be operated in half pressure Bipolar current control mode.
Described switched reluctance machines SRM is inner rotor core or outer-rotor structure.
Described switched reluctance machines SRM is the above switched reluctance machines SRM of three-phase, i.e. N=3,4,5, For three-phase switch reluctance machine SRM, i.e. N=3; Switched reluctance machines power topology both may be used for three-phase total head Bipolar control, also may be used for four phases and partly pressed Bipolar control; When wherein arbitrary brachium pontis breaks down, remaining three brachium pontis can realize three-phase and partly press Bipolar control.
Described switched reluctance machines SRM is the switched reluctance machines of any rotor tooth socket fit, arbitrarily mode of operation.
Switched reluctance machines power topology of the present invention both may be used for Electronic control pattern, may be used for again Generation Control pattern.
Beneficial effect: the switched reluctance machines power topology realizing total head Bipolar control provided by the invention, relative to prior art, there is following advantage: 1, with the power topology of three-phase bridge shown in Fig. 2 only with compared with loading in half busbar voltage to the every phase winding of switched reluctance machines, the present invention proposes a kind of switched reluctance machines power topology realizing total head Bipolar control, can realize loading whole busbar voltages on every phase winding; 2, the present invention carry the total head Bipolar control that power conversion topologies structure both can realize N phase switch reluctance motor, (N+1) phase switch reluctance motor can be realized again and partly press Bipolar control, have height flexibility and multifunctionality; 3, the present invention is compared to bridge switch reluctance motor power topology asymmetric shown in Fig. 1, because brachium pontis single-phase on market achieves large-scale production, reduces the cost of power converter of switch reluctance motor; If 4 power topology of the present invention wherein arbitrary brachium pontis break down, remaining three brachium pontis can realize three-phase and partly press Bipolar control, compare and traditional switched reluctance machines power topology, have high reliability.
Accompanying drawing explanation
Fig. 1 is traditional asymmetric bridge circuit power topology;
Fig. 2 is three-phase bridge circuit power topology;
A kind of switched reluctance machines power topology realizing total head Bipolar control that Fig. 3 provides for embodiment;
Fig. 4 is that in embodiment, A phase winding is operated in forward excited state;
Fig. 5 is that in embodiment, A phase winding is operated in freewheeling state;
Fig. 6 is that in embodiment, A phase winding is operated in reverse excited state;
Fig. 7 is that in embodiment, B phase winding is operated in forward excited state;
Fig. 8 is that in embodiment, B phase winding is operated in freewheeling state;
Fig. 9 is that in embodiment, B phase winding is operated in reverse excited state;
Figure 10 is that in embodiment, C phase winding is operated in forward excited state;
Figure 11 is that in embodiment, C phase winding is operated in freewheeling state;
Figure 12 is that in embodiment, C phase winding is operated in reverse excited state;
Figure 13 is under in embodiment, four phase switch reluctance machine operation press Bipolar current to control half;
Figure 14 is the working condition line graph of embodiment motor when breaking down.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
Be illustrated in figure 3 a kind of switched reluctance machines power topology realizing total head Bipolar control, comprise DC power supply V, power filtering capacitor C, 8 power switch tube S 1, S2, S3, S4, S5, S6, S7, S8 and three-phase switch reluctance machine SRM; The positive pole of DC power supply V connects the collector electrode of power switch tube S 1, S2, S3, S4 simultaneously, the negative pole of power supply V connects the emitter of power switch tube S 5, S6, S7, S8 simultaneously, power filtering capacitor C is connected in the positive and negative polarities of power supply V in parallel, A phase winding one end of switched reluctance machines SRM is connected to the emitter of power switch tube S 1 and the collector electrode of power switch tube S 5 simultaneously, and the A phase winding other end of switched reluctance machines SRM is connected to the emitter of power switch tube S 4 and the collector electrode of power switch tube S 8 simultaneously; B phase winding one end of switched reluctance machines SRM is connected to the emitter of power switch tube S 2 and the collector electrode of power switch tube S 6 simultaneously, and the B phase winding other end of switched reluctance machines SRM is connected to the emitter of power switch tube S 4 and the collector electrode of power switch tube S 8 simultaneously; C phase winding one end of switched reluctance machines SRM connects the emitter of power switch tube S 3 and the collector electrode of power switch tube S 7 simultaneously, and the C phase winding other end of switched reluctance machines SRM is connected to the emitter of power switch tube S 4 and the collector electrode of power switch tube S 8 simultaneously.
The operation principle of above-mentioned switched reluctance machines power topology is: switched reluctance machines SRM is powered by Bipolar current, namely can think can also be just negative by the exciting current of switched reluctance machines SRM winding.Compared with traditional asymmetric bridge power topological structure, this case structure can also reverse excitation.
When power switch tube S 1, S8 conducting, the A phase winding forward excitation of switched reluctance machines SRM, current direction as shown in Figure 4.When power switch tube S 1, S8 turn off, the A phase winding circuit of switched reluctance machines SRM as shown in Figure 5.When power switch tube S 4, S5 conducting, the reverse excitation of A phase winding of switched reluctance machines SRM, as shown in Figure 6, now when the sense of current and forward excitation, current direction is contrary for current direction.
When power switch tube S 2, S8 conducting, the B phase winding forward excitation of switched reluctance machines SRM, current direction as shown in Figure 7.When power switch tube S 2, S8 turn off, the B phase winding circuit of switched reluctance machines SRM as shown in Figure 8.When power switch tube S 4, S6 conducting, the reverse excitation of B phase winding of switched reluctance machines SRM, as shown in Figure 9, now when the sense of current and forward excitation, current direction is contrary for current direction.
When power switch tube S 3, S8 conducting, the C phase winding forward excitation of switched reluctance machines SRM, current direction as shown in Figure 10.When power switch tube S 3, S8 turn off, the C phase winding circuit of switched reluctance machines SRM as shown in figure 11.When power switch tube S 4, S7 conducting, the reverse excitation of C phase winding of switched reluctance machines SRM, as shown in figure 12, now when the sense of current and forward excitation, current direction is contrary for current direction.
This case can also be used for four phase switch reluctance motors, and as shown in figure 13, under it should be noted that now switched reluctance machines SRM also operates in Bipolar current, but every phase winding voltage only has the half of direct voltage source V in the now wiring of motor.Have when machine operation two phase windings energising and current polarity is contrary, every two phase windings carry out excitation in turn, and the order of winding excitation is A+B->B-C+>C+D-GreatT.GreaT.G TD-A+>A+B->B-C+GreatT.GreaT. GTC+D->D-A+ ....
When S1, S5 place brachium pontis, S2, S6 place brachium pontis, S3, S7 place brachium pontis, when in the brachium pontis of S4, S8 place, any brachium pontis frees fault, motor works under remaining three brachium pontis can be utilized to be operated in three-phase half pressure Bipolar control, as shown in figure 14.
Use a kind of switched reluctance machines power topology that can realize total head Bipolar control as shown in Figure 3; original three-phase bridge power topology can be replaced; make the power converter of switch reluctance motor based on Bipolar control can realize loading in busbar voltage total head to every phase winding; there is better performance compared with the three-phase bridge circuit shown in Fig. 2; simultaneously because brachium pontis single-phase on market realizes large-scale production; compared with the asymmetric bridge power topology of tradition as shown in Figure 1, there is lower cost advantage.What the switched reluctance machines power topology of the total head Bipolar control of this case can also be used for four phase switch reluctance motors partly presses Bipolar control, has high degree of flexibility and multifunctionality.In addition, when the arbitrary brachium pontis of power inverter of this case breaks down, utilize three remaining brachium pontis can realize three-phase and partly press Bipolar control, there is high reliability.Inventive concept will the application of pull switch reluctance motor in speed-adjusting driving system further, improves its market competitiveness.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (5)
1. realize a switched reluctance machines power topology for total head Bipolar control, it is characterized in that: comprise DC power supply V, power filtering capacitor C, (N+1) to power switch pipe and a N phase switch reluctance motor SRM; N-th pair of power switch pipe comprises power switch tube S
n1and power switch tube S
n2, power switch tube S
n1emitter and power switch tube S
n2collector electrode be connected on electric contact P
n, n=1,2 ..., N, (N+1); The positive pole of DC power supply V connects power switch tube S simultaneously
n1collector electrode, the negative pole of DC power supply V connects power switch tube S simultaneously
n2emitter, power filtering capacitor C is connected in parallel between the positive and negative polarities of DC power supply V; The two ends of n-th phase winding of switched reluctance machines SRM respectively with electric contact P
nwith electric contact P
(N+1)connect.
2. the switched reluctance machines power topology realizing total head Bipolar control according to claim 1, is characterized in that: described switched reluctance machines SRM is inner rotor core or outer-rotor structure.
3. the switched reluctance machines power topology realizing total head Bipolar control according to claim 1, is characterized in that: described switched reluctance machines SRM is the above switched reluctance machines SRM of three-phase, i.e. N=3,4,5 ...
4. the switched reluctance machines power topology realizing total head Bipolar control according to claim 1, it is characterized in that: under this topological structure can be operated in total head Bipolar current control mode as N-phase electric machine, also can be used as (N+1) phase machine operation under half pressure Bipolar current control mode.
5. a kind of switched reluctance machines power topology realizing total head Bipolar control according to claim 1, it is characterized in that: when wherein arbitrary brachium pontis of this topological structure breaks down, remaining (N+1) individual brachium pontis can realize N phase and partly press Bipolar control.
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Cited By (8)
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|---|---|---|---|---|
| CN105391263A (en) * | 2015-12-10 | 2016-03-09 | 山东大学 | Block-based switched reluctance motor with short end part and short magnetic circuit and control circuit thereof |
| CN105634372A (en) * | 2016-02-22 | 2016-06-01 | 西北工业大学 | Bipolar excitation control policy for three-phase SRM modular power converter |
| CN107196574A (en) * | 2017-05-08 | 2017-09-22 | 西安交通大学 | A kind of outer power of motor translation circuit of permanent-magnet magnetic resistance type double-rotor machine |
| CN109444739A (en) * | 2018-10-22 | 2019-03-08 | 中国矿业大学 | A kind of reliability estimation method of switched reluctance motor system power inverter |
| CN111525847A (en) * | 2020-05-21 | 2020-08-11 | 华中科技大学 | Magnetic field modulation driving topology of dual-channel switched reluctance motor and control method thereof |
| CN112821842A (en) * | 2021-03-15 | 2021-05-18 | 合肥恒大江海泵业股份有限公司 | Fault-tolerant control method for open circuit fault of switched reluctance motor |
| GR1010204B (en) * | 2021-06-04 | 2022-03-21 | Δημοκριτειο Πανεπιστημιο Θρακης-Ειδικος Λογαριασμος Κονδυλιων Ερευνας, | Advanced driving scheme of the switched reluctance machine (srm) |
| CN114337459A (en) * | 2021-12-31 | 2022-04-12 | 西比里电机技术(苏州)有限公司 | Driving topology circuit applicable to two-phase switched reluctance motor with wide power supply voltage |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391263A (en) * | 2015-12-10 | 2016-03-09 | 山东大学 | Block-based switched reluctance motor with short end part and short magnetic circuit and control circuit thereof |
| CN105634372A (en) * | 2016-02-22 | 2016-06-01 | 西北工业大学 | Bipolar excitation control policy for three-phase SRM modular power converter |
| CN107196574A (en) * | 2017-05-08 | 2017-09-22 | 西安交通大学 | A kind of outer power of motor translation circuit of permanent-magnet magnetic resistance type double-rotor machine |
| CN109444739A (en) * | 2018-10-22 | 2019-03-08 | 中国矿业大学 | A kind of reliability estimation method of switched reluctance motor system power inverter |
| CN111525847A (en) * | 2020-05-21 | 2020-08-11 | 华中科技大学 | Magnetic field modulation driving topology of dual-channel switched reluctance motor and control method thereof |
| CN111525847B (en) * | 2020-05-21 | 2022-02-15 | 华中科技大学 | Magnetic field modulation driving topology of dual-channel switched reluctance motor and control method thereof |
| CN112821842A (en) * | 2021-03-15 | 2021-05-18 | 合肥恒大江海泵业股份有限公司 | Fault-tolerant control method for open circuit fault of switched reluctance motor |
| CN112821842B (en) * | 2021-03-15 | 2022-01-25 | 合肥恒大江海泵业股份有限公司 | Fault-tolerant control method for open circuit fault of switched reluctance motor |
| GR1010204B (en) * | 2021-06-04 | 2022-03-21 | Δημοκριτειο Πανεπιστημιο Θρακης-Ειδικος Λογαριασμος Κονδυλιων Ερευνας, | Advanced driving scheme of the switched reluctance machine (srm) |
| CN114337459A (en) * | 2021-12-31 | 2022-04-12 | 西比里电机技术(苏州)有限公司 | Driving topology circuit applicable to two-phase switched reluctance motor with wide power supply voltage |
| CN114337459B (en) * | 2021-12-31 | 2023-12-08 | 西比里电机技术(苏州)有限公司 | Driving topology circuit suitable for two-phase switch reluctance motor with wide power supply voltage |
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Application publication date: 20150930 |