CN105553378A - Variable-structure drive topology - Google Patents
Variable-structure drive topology Download PDFInfo
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- CN105553378A CN105553378A CN201510965354.4A CN201510965354A CN105553378A CN 105553378 A CN105553378 A CN 105553378A CN 201510965354 A CN201510965354 A CN 201510965354A CN 105553378 A CN105553378 A CN 105553378A
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- power
- power switch
- winding
- power tube
- star
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/22—Multiple windings; Windings for more than three phases
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Ac Motors In General (AREA)
Abstract
The invention provides a variable-structure drive topology, which comprises a power tube group and a power switch group, wherein the number of power tubes in the power tube group is matched with the number of phases of an open winding motor; when the number of phases of the open winding motor is 2N, N is greater than or equal to 2; the number of the power tubes is 4N; drains and sources of every two power tubes are connected in series to form a bridge arm; the series drains are connected with a power supply terminal; the series sources are grounded; a wiring terminal is arranged between the drains and the sources, which are connected with one another in series; the wiring terminal is connected with a terminal of a winding of the open winding motor; a grid of each power tube is taken as a control terminal; the power switch group comprises 3N-2 power switches; the grid of each power switch is taken as the control terminal; four power switches form a square unit; a plurality of square units are connected with one another in series up and down; series common edges of two adjacent square units share one power switch; the wiring terminal is arranged at a common terminal which is connected with the power switch; and the wiring terminal is connected with another terminal of the winding of the open winding motor.
Description
Technical field
The present invention relates to drive and control of electric machine field, drive topology in particular to a kind of varistructure formula.
Background technology
Drive system is the critical energy converting system in electric machine control system, as the bridge between controller and motor and important tie, its Performance And Reliability concerns the Performance And Reliability of whole electric machine control system, especially in high power density, high accuracy, high dynamic servo system, drive system has very high importance, along with the rise energetically of the complete electric equipment such as full electric car, electric tank, complete electric naval vessel, the operating mode of drive system also becomes increasingly complex, and is also more and more higher to the requirement of drive system Performance And Reliability.
In prior art; in order to meet the multi-state instructions for use of electric system; the operating modes such as such as high speed, low speed, underloading, heavy duty, normal or fault; the bi-motor comprehensive method that usual employing two kinds of performance differences are larger; carried out the mode of parallel connection or series connection by clutch by bi-motor; in different duty requirements situations, switch different machine operation.Although adopt during bi-motor structure and can meet the multi-state instructions for use of electric system, this structure not only causes that system complex, volume are large, Heavy Weight, but also also exist that power density is low, efficiency is low, mechanical shock and the problem such as noise is large.
Summary of the invention
Technology of the present invention is dealt with problems and is: provide a kind of high reliability, high power density, can adapt to the varistructure formula of different operating mode driving topology.
Technical solution of the present invention is: a kind of varistructure formula drives topology, comprises power tube group and power switch group;
In described power tube group, the number of phases of power tube quantity and open winding electric machine matches, when the open winding electric machine number of phases is 2N, and N >=2, power tube quantity is 4N; Wherein, the drain electrode of every two power tubes forms a brachium pontis together with source series, and the drain electrode after series connection connects power end, the source ground after series connection, be provided with binding post between the drain electrode be cascaded and source electrode, binding post is connected with a terminal of the winding of open winding electric machine; The grid of above-mentioned all power tubes is as control end;
Described power switch group comprises 3N-2 power switch, and the grid of each power switch is as control end; Four power switchs form a square shape unit, and multiple square shape unit conspires to create a string up and down, and the common edge of adjacent two square shape units in series shares a power switch; The common port that power switch connects is provided with binding post, and namely 3N-2 power switch has 2N binding post, and binding post is connected with the another one terminal of the winding of open winding electric machine.
Described power switch group, according to variable-structure control instruction, carries out malformation; Concrete: according to instruction, when the power switch of the vertical setting of types of square shape unit open, horizontally-arranged power switch close time, together, 2N phase winding forms two star structures to N phase winding shorted on one end, two star structures are driven by corresponding power tube respectively, form star and drive topological structure; When the horizontally-arranged power switch of hollow unit open, vertical setting of types power switch close time, two windings in series are got up formation one phase winding, form H bridge with corresponding power tube and drive topological structure.
Drive topological structure star, when certain winding or power tube break down, the star of breaking down is driven the power tube Close All in topological structure, another one star structure winding current doubles, and realizes faults-tolerant control.
Topological structure is driven, when certain winding or power tube break down, by the power tube Close All on the H bridge that breaks down at H bridge.
According to duty requirements, close a star and drive topological structure, realize underloading mode of operation.
The present invention compared with prior art beneficial effect is:
Topology is driven according to varistructure formula of the present invention, according to different duty requirements, driving topological structure can be converted, make the operating state that open winding electric machine reaches different, compare dual drive+bi-motor structure, effectively can improve electric system power density, motor and power device utilization rate, reduce system weight and volume.
Accompanying drawing explanation
Fig. 1 is the Organization Chart driving topological structure according to 2 × N phase varistructure formula of the present invention;
Fig. 2 is the Organization Chart that six phase varistructure formulas according to the present invention drive topological structure;
Fig. 3 is the Organization Chart of the drive system applying topological structure of the present invention.
Embodiment
Below in conjunction with accompanying drawing and example, the present invention is elaborated.As indicated with 1, a kind of varistructure formula drives topology, comprises power tube group 40 and power switch group 50;
In described power tube group 40, the number of phases of power tube quantity and open winding electric machine matches, when the open winding electric machine number of phases is 2N, and N >=2, power tube 41 quantity is 4N; Wherein, the drain electrode of every two power tubes forms a brachium pontis 42 together with source series, drain electrode after series connection connects power end, source ground after series connection, be provided with binding post 43 between the drain electrode be cascaded and source electrode, binding post 43 is connected with a terminal of the winding of open winding electric machine; The grid of above-mentioned all power tubes is as control end;
Described power switch group 50 comprises 3N-2 power switch 51, and the grid of each power switch is as control end; Four power switchs form a square shape unit, and multiple square shape unit conspires to create a string up and down, and the common edge of adjacent two square shape units in series shares a power switch; The common port that power switch connects is provided with binding post, and namely 3N-2 power switch has 2N binding post 52, and binding post 52 is connected with the another one terminal of the winding of open winding electric machine.
Fig. 3 is the framework that topological structure of the present invention is applied in open winding electric machine drive system, specifically comprises programmable logic controller (PLC) 10, power transistor driver 20, switching tube driver 30, topological structure of the present invention (power tube group 40 and power switch group 50);
Programmable logic controller (PLC) 10 is provided with the input receiving top level control device sending controling instruction, and is provided with the output exporting drived control and variable-structure control instruction, is connected respectively with described power transistor driver 20 with the input of switching tube driver 30.
Power transistor driver 20 is provided with the input be connected with described programmable logic controller (PLC) 10, also be provided with the output be connected with follow-up described power tube group 40, for the drived control digital signal that described programmable logic controller (PLC) 10 is exported, carry out signal isolation, power drive is amplified, export to the control end of the described power tube 41 in described power tube group 40, thus control the conducting state of described power tube 41, to reach the running status controlling motor.
Switching tube driver 30 is provided with the input be connected with described programmable logic controller (PLC) 10, also be provided with the output be connected with follow-up described power switch group 50, for the variable-structure control digital signal that described programmable logic controller (PLC) 10 is exported, carry out signal isolation, power drive is amplified, export to the control end of the described power switch 51 in described power switch group 50, thus control opening and closedown of described power switch 51, to reach the object carrying out driving topological structure changes.
Specific works process is: programmable logic controller (PLC) 10 receives the control command driving topological structure changes and driving, and generating power pipe group 40 and power switch group 50 control command, respectively by power transistor driver 20 and switch driver 30, control opening or closing of some power tube and power switch in power tube group 40 and power switch group 50, to reach the object driving topological structure variable, open winding electric machine is made to be operated in different states.
Embodiment
As shown in Figure 2, in power tube group 40, the number of phases of power tube quantity and open winding electric machine matches, when the open winding electric machine number of phases is 6, wherein, N=3, power tube 41 quantity is 12, be divided into 6 brachium pontis 42, each brachium pontis 42 comprises upper and lower two power tubes 41, and the intermediate point of each brachium pontis 42 is provided with binding post 43, and described binding post 43 is connected with a terminal of the winding of open winding electric machine respectively;
Power switch group 50 comprises 7 power switchs, 51,7 power switchs 51 and connects into multiple " mouth " word string connection shape, and is provided with 6 binding posts 52, and binding post 52 is connected with the another one terminal of the winding of open winding electric machine.
Power switch group 50, according to variable-structure control instruction, can be out of shape, namely by controlling opening or closing of power switch 51.
When high speed operation, open winding electric machine can be allowed to be operated in star structure, namely by opening the vertical setting of types power switch 51 in power switch group 50 in "mouth" shape, i.e. power switch T2, T3, T5, T6 opens, horizontally-arranged power switch 51 is closed, i.e. power switch T1, T4, T7 closes, such winding has shorted on one end together, and driven by the power tube of 6 in power tube group 40 41, form star and drive topological structure, namely winding 1W1-1W3 and winding 2W1-2W3 form two respectively and to be star-likely connected, so just being equivalent to double three-phase machine drives topology to carry out drived control by three phase full bridge respectively.
Winding 1W1-1W3 respectively with winding 2W1-2W3, functionally identical, after certain winding or power tube break down, and that three-phase windings Close All that will break down, the disappearance making up fault phase can be doubled by other three winding currents, thus Driving Torque held stationary can be ensured, realize failure tolerant function.
When tick-over, can allow two of open winding electric machine windings in series together and be operated in independent H-bridge structure, namely by opening the horizontally-arranged power switch 51 in power switch group 50 in "mouth" shape, namely power switch T1, T4, T7 opens, vertical setting of types power switch 51 is closed, namely power switch T2, T3, T5, T6 closes, winding 1W1-1W3 is together in series with winding 2W1-2W3 respectively, form a new phase winding, and driven by the power tube of four in power tube group 40 41, form independent H-bridge and drive topological structure.
If when tick-over, on H bridge, power tube or winding break down, can by power tube Close All on its whole H bridge, be equivalent to winding and there occurs open circuit or short trouble, adopt existing method that residue phase winding current amplitude and phase place are carried out drived control according to the current amplitude after faults-tolerant control and phase place, thus can ensure that fault rear motor Driving Torque is close to normal value, to reach the demand meeting system condition.
Topological structure is driven star, according to system condition demand, can only retain a star and drive topological structure, instead of all star drives topological structure, realize underloading mode of operation, when whole star drives topological structure all to work, and under being operated in overload model, thus realize heavy duty work pattern.If wherein certain star drives topological structure to break down, topological structure can be driven to increase power stage by other star, to make up the power disappearance that fault causes, thus can faults-tolerant control be realized.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a varistructure formula drives topology, it is characterized in that: comprise power tube group (40) and power switch group (50);
In described power tube group (40), the number of phases of power tube quantity and open winding electric machine matches, when the open winding electric machine number of phases is 2N, and N >=2, power tube (41) quantity is 4N; Wherein, the drain electrode of every two power tubes forms a brachium pontis (42) together with source series, drain electrode after series connection connects power end, source ground after series connection, be provided with binding post (43) between the drain electrode be cascaded and source electrode, binding post (43) is connected with a terminal of the winding of open winding electric machine; The grid of above-mentioned all power tubes is as control end;
Described power switch group (50) comprises 3N-2 power switch (51), and the grid of each power switch is as control end; Four power switchs form a square shape unit, and multiple square shape unit is connected up and down, and the common edge of adjacent two square shape units in series shares a power switch; The common port that power switch connects is provided with binding post, and namely 3N-2 power switch has 2N binding post (52), and binding post (52) is connected with the another one terminal of the winding of open winding electric machine.
2. a kind of varistructure formula according to claim 1 drives topology, it is characterized in that: described power switch group (50), according to variable-structure control instruction, carries out malformation; Concrete: according to instruction, when the power switch of the vertical setting of types of square shape unit open, horizontally-arranged power switch close time, together, 2N phase winding forms two star structures to N phase winding shorted on one end, two star structures are driven by corresponding power tube respectively, form star and drive topological structure; When the horizontally-arranged power switch of hollow unit open, vertical setting of types power switch close time, two windings in series are got up formation one phase winding, form H bridge with corresponding power tube and drive topological structure.
3. a kind of varistructure formula according to claim 2 drives topology, it is characterized in that: drive topological structure star, when certain winding or power tube break down, the star of breaking down is driven the power tube Close All in topological structure, another one star structure winding current doubles, and realizes faults-tolerant control.
4. a kind of varistructure formula according to claim 2 drives topology, it is characterized in that: drive topological structure at H bridge, when certain winding or power tube break down, by the power tube Close All on the H bridge that breaks down.
5. a kind of varistructure formula according to claim 2 drives topology, it is characterized in that: according to duty requirements, closes a star and drives topological structure to realize underloading mode of operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510965354.4A CN105553378A (en) | 2015-12-21 | 2015-12-21 | Variable-structure drive topology |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510965354.4A CN105553378A (en) | 2015-12-21 | 2015-12-21 | Variable-structure drive topology |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711397A (en) * | 2020-05-27 | 2020-09-25 | 东南大学 | Predictive current control method based on semi-centralized open winding permanent magnet synchronous motor system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125568A (en) * | 1998-10-16 | 2000-04-28 | Mitsubishi Heavy Ind Ltd | Inverter power supply device |
| CN103441730A (en) * | 2013-07-17 | 2013-12-11 | 江苏大学 | Motor fault-tolerant driving control system and method achieving self-repairing of faults |
| CN104167975A (en) * | 2014-08-18 | 2014-11-26 | 华中科技大学 | Multiphase permanent magnet motor speed regulating system based on phase switching and speed regulating method thereof |
-
2015
- 2015-12-21 CN CN201510965354.4A patent/CN105553378A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125568A (en) * | 1998-10-16 | 2000-04-28 | Mitsubishi Heavy Ind Ltd | Inverter power supply device |
| CN103441730A (en) * | 2013-07-17 | 2013-12-11 | 江苏大学 | Motor fault-tolerant driving control system and method achieving self-repairing of faults |
| CN104167975A (en) * | 2014-08-18 | 2014-11-26 | 华中科技大学 | Multiphase permanent magnet motor speed regulating system based on phase switching and speed regulating method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111711397A (en) * | 2020-05-27 | 2020-09-25 | 东南大学 | Predictive current control method based on semi-centralized open winding permanent magnet synchronous motor system |
| CN111711397B (en) * | 2020-05-27 | 2021-11-02 | 东南大学 | Predictive current control method for semi-centralized open-winding permanent magnet synchronous motor system |
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Application publication date: 20160504 |