CN101272125B - Motor drive system with fault tolerance function - Google Patents
Motor drive system with fault tolerance function Download PDFInfo
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- CN101272125B CN101272125B CN2008101042881A CN200810104288A CN101272125B CN 101272125 B CN101272125 B CN 101272125B CN 2008101042881 A CN2008101042881 A CN 2008101042881A CN 200810104288 A CN200810104288 A CN 200810104288A CN 101272125 B CN101272125 B CN 101272125B
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Abstract
A motor drive system with a fault tolerance function comprises an inverter and a motor; the motor can be an asynchronous motor, a permanent magnet motor or a reluctance motor; the stator of the motor is provided with four or six sets of windings to lead out four terminals U, V, W and O; wherein, the windings connected by any three terminals can form a rotating magnetic field in a motor air gapby inputting current. The inverter is a three-phase full-bridge inverter which simultaneously leads out a DC neutrality point N; the leding-out ends A, B and C of the three bridge arms of the inverter and the DC neutrality point N are connected with the four leding-out terminals U, V, W and O of the motor. When any phase of the motor drive system of the invention is wrong, the fault tolerance control can be realized by simply changing control algorithm without needing a hardware switch to participate in; a fault tolerance operation state without needing stopping the machine can also be fast entered.
Description
Technical field
The present invention relates to a kind of motor driven systems with high reliability.
Background technology
Motor windings and converters are the weak links that easily breaks down in the drive system.Therefore in case one of them breaks down, whole system will be lost the ability of operate as normal, and this can bring economic loss in general civilian occasion, and in important events such as aviation, military affairs, will cause catastrophic failure, and it is great to carry out the fault-tolerant Research Significance of electricity generation system.Common measure provides redundant motor windings or controller, and such system cost and volume all can be very big, inapplicable to the higher occasion of volume requirement.At most common failures such as the open circuit of power switch or short circuits, in the article " study of Direct Torque Control of error-tolerance type four switch three-phase inverter asynchronous generating systems " (" Proceedings of the CSEE ", 2005 18 phases, Zhang Lanhong Hu Yuwen), a kind of fault-tolerance approach has been proposed: open failure switch place brachium pontis, six switch three-phase inverters are reconstructed into four switch three-phase inverters,, make system continue operation again by adjustment to control strategy.The shortcoming of this scheme is can only be for converters provides redundant, and motor windings is damaged, and system can't work equally; Secondly this scheme need judge which is out of order mutually, thereby realizes the fault-tolerant control of failure system by switch, and control is complicated, increases system cost and volume simultaneously; Owing to need realize fault-tolerant control by switch, real-time is relatively poor, and failure recovery time is long, is difficult to satisfy the demand of the high occasion of some needs real-times.How on the basis that does not increase system bulk and cost, improve system survivability and reliability is a difficult problem always.
Summary of the invention
It is low to the objective of the invention is to solve existing electric system fault-tolerant ability, the fault-tolerant networks complicated problems.Proposed a kind of novel motor driven systems, this drive system adopts three-phase inverter to constitute, and has fault-tolerant ability preferably, the reliability height, and also system cost is low, and simple in structure, volume is little.
Drive system of the present invention comprises an inverter and a motor.
Motor wherein of the present invention can be a magneto, or asynchronous machine, or reluctance motor.Different with traditional three phase electric machine, motor stator of the present invention has many cover windings, but only goes out 4 leading-out terminals.And satisfied wherein any three windings that terminal connected pass to suitable electric current and just can form rotating magnetic field in air gap.
Wherein inverter adopts traditional three-phase full-bridge inverter, draws the DC point simultaneously, and inverter can be drawn 4 terminals like this, links to each other with above-mentioned motor.So, native system constitutes a motor driven systems, when wherein any one going wrong mutually, can realize fault-tolerant control by simple control algolithm change, need not hardware switch and participates in, and need not to shut down to enter the fault-tolerant operation state rapidly.
The invention has the beneficial effects as follows: the drive system of this high reliability, adopt the hardware of simple three-phase bridge inverter, under the prerequisite that does not significantly increase system bulk, weight and control difficulty, utilize simple control algolithm to change, effectively improve the reliability and security of drive system.The present invention can provide redundant mutually for any one of motor, and simultaneous faults is very short recovery time.
Description of drawings
Fig. 1 is traditional three phase electric machine drive system schematic diagram;
Fig. 2 is one of specific embodiment of the invention schematic diagram;
Fig. 3 is two schematic diagrames of the specific embodiment of the invention.
Embodiment
Further specify the present invention below in conjunction with the drawings and specific embodiments.
Figure 1 shows that traditional three phase electric machine drive system.Three brachium pontis of inverter are drawn three terminal A respectively, B, and C, with three leading-out terminal U of three phase electric machine, V, W is connected, and three phase windings pass to electric current and form rotating magnetic field, drive motors work.When wherein any one motor windings or any one brachium pontis fault of inverter, system quits work immediately.
Shown in Figure 2 is one of specific embodiments of the present invention.In this system, directly draw the neutral point N of DC power supply, with the exit A of three brachium pontis, B, C are the motor power supply together.And the method that the motor stator in this example adopts four phase winding stars to connect constitutes one four phase motor, the exit A of three brachium pontis of four phase motors and inverter, and B, C and neutral point N link to each other.According to Kirchhoff's theorem as can be known, the electric current in any times four phase winding and be zero.During operate as normal, by control OU, the electric current in the OV, OW phase winding reaches the purpose of controlling OX phase winding electric current, makes and forms rotating magnetic field, drive motors work in the motor gas-gap.Suppose OU phase motor windings fault, by control OV, the electric current in the OW winding reaches the purpose of controlling the OX winding current, makes and forms rotating magnetic field, drive motors operate as normal in the motor gas-gap.Same supposition inverter A phase fault, by control OV, the electric current in the OW winding reaches the purpose of controlling the OX winding current, makes and forms rotating magnetic field, drive motors operate as normal in the motor gas-gap.Same, other any phase faults, system can operate as normal, and reliability is compared traditional three-phase system and is had increased significantly, and the required change of system is very little.
Shown in Figure 3 is another embodiment of the present invention.In this system, the dc bus of inverter supports electric capacity and adopts two identical capacitor C 1, the C2 series connection, and with two capacitor C 1, neutral point N is drawn in C2 series connection place, and with the exit A of three brachium pontis, B, C are the motor power supply together.And the motor stator in the present embodiment adopts six cover windings to link to each other, and forms tetrahedral six ribs, and four fixed points are as leading-out terminal U, V, and W, O constitutes a polyphase machine, respectively with the exit A of three brachium pontis of inverter, B, C and neutral point N are continuous.According to Kirchhoff's theorem as can be known, any times six overlap the electric current in the winding and are zero.During operate as normal, by control OU, the electric current in the OV, OW phase winding reaches control UV, VW, and the purpose of WU phase winding electric current makes and forms rotating magnetic field, drive motors work in the motor gas-gap.Suppose OU phase motor windings fault, motor becomes UV, VW, WU phase corner connection winding and OV, VW, the motor that WO phase corner connection winding constitutes is by control UV, VW, WU phase corner connection winding and OV, electric current in the VW, WO phase corner connection winding makes and forms rotating magnetic field, drive motors operate as normal in the motor gas-gap.Same supposition inverter A phase fault, winding UW, UV, UO can't power mutually, and by control OV, the electric current in the VW, WO phase corner connection winding makes and forms rotating magnetic field, drive motors operate as normal in the motor gas-gap.Same, other any phase faults, system can operate as normal, and reliability is compared traditional three-phase system and is had increased significantly, and the required change of system is very little.
The present invention only makes simple change to system hardware, constancy of volume, and cost is lower simultaneously, and reliability is greatly improved, and has important practical value.
Claims (2)
1. motor driven systems with fault tolerance, it is characterized in that comprising an inverter and a motor, motor is asynchronous machine, magneto or reluctance motor, its stator has the quadruplet winding, the method that adopts star to connect constitutes one four phase motor, and wherein any three windings that terminal connected pass to sinusoidal ac and just can form rotating magnetic field in motor gas-gap; Inverter is a three-phase full-bridge inverter, draws dc bus neutral point N simultaneously; 4 leading-out terminal U, V of motor, W, O link to each other with exit A, B, C and the DC point N of three brachium pontis of inverter, and when wherein any one going wrong mutually, other three-phases still can make the motor operate as normal.
2. motor driven systems with fault tolerance, it is characterized in that comprising an inverter and a motor, motor is asynchronous machine, magneto or reluctance motor, its stator has six cover windings, six cover windings link to each other and form tetrahedral six ribs, four fixed points constitute a polyphase machine as leading-out terminal U, V, W, O, and wherein any three windings that terminal connected pass to sinusoidal ac just form rotating magnetic field in motor gas-gap; Inverter is a three-phase full-bridge inverter, and the dc bus of inverter supports electric capacity and adopts two identical capacitor C 1, C2 series connection, and neutral point N is drawn in two capacitor C 1, C2 series connection place; Leading-out terminal U, the V of motor, W, O link to each other with exit A, B, C and the neutral point N of three brachium pontis of inverter respectively, and when wherein any one going wrong mutually, other five phases still can make the motor operate as normal.
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| CN2008101042881A CN101272125B (en) | 2008-04-17 | 2008-04-17 | Motor drive system with fault tolerance function |
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| CN2008101042881A CN101272125B (en) | 2008-04-17 | 2008-04-17 | Motor drive system with fault tolerance function |
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| CN101272125A CN101272125A (en) | 2008-09-24 |
| CN101272125B true CN101272125B (en) | 2011-06-15 |
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Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101599649B (en) * | 2009-04-21 | 2012-05-09 | 合肥工业大学 | Directly-driven wind power generation system and mode for modulating SPWM inversion control signal in system |
| CN102687389B (en) * | 2010-01-25 | 2015-04-29 | 丰田自动车株式会社 | Motor drive system, motor drive system control method and travelling device |
| CN101951072B (en) * | 2010-08-10 | 2015-07-08 | 哈尔滨理工大学 | Time-staggering independent-drive device and method for stator windings of permanent magnet synchronous motor |
| CN102223131B (en) * | 2011-06-17 | 2013-05-08 | 江苏大学 | Drive control method of fault tolerant type magnetic flux switching permanent magnet motor |
| CN102684577B (en) * | 2012-05-24 | 2014-06-11 | 东南大学 | Fault-tolerant control method of permanent-magnet synchronous motor driving system |
| CN104143938A (en) * | 2013-05-06 | 2014-11-12 | 博世汽车部件(苏州)有限公司 | Control equipment and method for three-phase BLDC motor |
| CN103281019B (en) * | 2013-05-29 | 2015-06-03 | 东南大学 | Permanent magnet synchronous motor fault-tolerant-type traction module and control method thereof |
| CN103441640B (en) * | 2013-08-29 | 2016-06-15 | 江苏大学 | Modularization error-tolerance magnetic flux switching permanent-magnetism linear motor control method |
| CN103780114A (en) * | 2014-02-17 | 2014-05-07 | 国家电网公司 | Inverter device and power supply vehicle |
| CN105406775A (en) * | 2015-12-02 | 2016-03-16 | 江苏科技大学 | Identification method for electromagnetic torque of permanent-magnet synchronous motor |
| CN105577071B (en) * | 2015-12-27 | 2018-09-07 | 中国科学院电工研究所 | A kind of three phase alternating current motor drive system |
| JP7070548B2 (en) * | 2017-03-29 | 2022-05-18 | 日本電産株式会社 | Power converter, motor drive unit and electric power steering device |
| CN116388644A (en) * | 2023-04-23 | 2023-07-04 | 哈尔滨理工大学 | Topological structure of multi-winding alternating current three-phase motor driving system and reconstruction method thereof |
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2008
- 2008-04-17 CN CN2008101042881A patent/CN101272125B/en not_active Expired - Fee Related
Non-Patent Citations (2)
| Title |
|---|
| JP特开2007-318828A 2007.12.06 |
| 赵文祥等.双凸极永磁电机故障分析与容错控制错略.《电动机数学报》.2009,第24卷(第4期),71-77. * |
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Application publication date: 20080924 Assignee: Jiangsu Rothwell Electric Co., Ltd. Assignor: Institute of Electrical Engineering of the Chinese Academy of Sciences Contract record no.: 2013320000056 Denomination of invention: Motor drive system with fault tolerance function Granted publication date: 20110615 License type: Exclusive License Record date: 20130304 |
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Assignee: Jiangsu Rothwell Electric Co., Ltd. Assignor: Institute of Electrical Engineering of the Chinese Academy of Sciences Contract record no.: 2013320000056 Date of cancellation: 20131127 |
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