CN108964523A - Bi-motor error-tolerance type inverter - Google Patents
Bi-motor error-tolerance type inverter Download PDFInfo
- Publication number
- CN108964523A CN108964523A CN201810767813.1A CN201810767813A CN108964523A CN 108964523 A CN108964523 A CN 108964523A CN 201810767813 A CN201810767813 A CN 201810767813A CN 108964523 A CN108964523 A CN 108964523A
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- China
- Prior art keywords
- motor
- switching tube
- inverter bridge
- drain electrode
- source electrode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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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
- H02P5/00—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors
- H02P5/74—Arrangements specially adapted for regulating or controlling the speed or torque of two or more electric motors controlling two or more ac dynamo-electric motors
-
- 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
- H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
- H02P29/02—Providing protection against overload without automatic interruption of supply
- H02P29/032—Preventing damage to the motor, e.g. setting individual current limits for different drive conditions
Abstract
The invention discloses a kind of bi-motor error-tolerance type inverters, including DC bus, capacitor, six switching tube bridge arms, two motors and two generator neutral point connecting lines.The three-phase of first motor is connect with the midpoint of the first bridge arm, the second bridge arm, third bridge arm respectively, and the three-phase of the second motor is connected respectively at the midpoint of four bridge legs, the 5th bridge arm, the 6th bridge arm, and the neutral point of two motors interconnects.The fault-tolerant operation of the bi-motor when a phase winding of motor or a bridge arm of inverter break down is also achieved other than the operation of bi-motor normal driving provided by the present invention for bi-motor error-tolerance type inverter topology.
Description
Technical field
The present invention relates to motor control technology field more particularly to a kind of bi-motor error-tolerance type inverters and its faults-tolerant control
Method.
Background technique
At present in the occasion that electric car, electric locomotive, aerospace etc. need to use more motors while operation, to protect
The reliability for demonstrate,proving motor operation, it is topological frequently with error-tolerance type for the driver of motor.
Found by retrieval, in existing technology, for drive bi-motor inverter topology mainly there are several types of
Number of patent application is 201010565874.3, entitled " three bridge arms, nine switching inverter for the driving of double alternating current generators "
In, describe a kind of bi-motor topological structure of three bridge arms nine switch.As shown in Fig. 2, although the structure reduces switching tube
Usage quantity, control difficulty are higher.
Number of patent application is 201510032368.0, in entitled " Dual-motors Driving inverter ", is described a kind of by two
The three-phase inverter structure that the neutral conductor of platform motor is connected with positive and negative busbar respectively.As shown in Figure 3.The topology limits two motors
The independence of operating.
Number of patent application is 201611132149.0, in entitled " inverter topology for bi-motor ", is introduced
A kind of bi-motor inverter structure, as shown in Figure 4.The topology is the equal of three-phase Four-switch converter and three phase full bridge inversion
One combination of device, number of switches is reduced, but when bridge arm breaks down, motor can not be made to continue to run.
Above several inverter topologies for bi-motor all do not hold preferably when bridge arm failure occurs for inverter
Wrong service ability.
One kind exists in the prior art for two motor fault-tolerant type inverters, as shown in figure 5, pair of the topology in two motors
Answer the thyristor that bidirectionally conductive is connected between phase.When a certain bridge arm breaks down, can by cut off failure bridge arm,
It is two motors, five bridge arm structure by topological transformation, as shown in Figure 6.The topology need to share a bridge arm in fault condition, flow through public affairs
The electric current of bridge arm increases altogether, improves, while the structure of this five leg inverter, also increases to the performance requirement of switching device
The complexity of control.
Summary of the invention
The technical problem to be solved by the present invention is to need to increase and be used for in prior art bi-motor error-tolerance type inverter
The switching device or capacitor of malfunction, and it is fault-tolerant to propose a kind of bi-motor the problems such as system control complexity when failure generation
Type inverter, can be effectively in the case where not increasing switching device or capacitor, two motor continuous services when realizing failure.
The present invention uses following technical scheme to solve above-mentioned technical problem:
Bi-motor error-tolerance type inverter includes capacitor, the first to the 12nd switching tube, first motor and the second motor；
The first motor, the second motor are all made of three-phase winding motor, comprising first to the tertiary winding；
Described capacitor one end is switched with external power supply anode, the drain electrode of first switch tube, the drain electrode of third switching tube, the 5th respectively
The drain electrode of pipe, the drain electrode of the 7th switching tube, the drain electrode of the 9th switching tube, the drain electrode of the 11st switching tube are connected, other end difference
With external power supply cathode, the source electrode of second switch, the source electrode of the 4th switching tube, the 6th switching tube source electrode, the 8th switching tube
Source electrode, the source electrode of the tenth switching tube, the 12nd switching tube source electrode be connected；
The source electrode of the first switch tube input terminal phase with the first winding in the drain electrode of second switch, first motor respectively
Even；
The source electrode of the third switching tube input terminal phase with the second winding in the drain electrode of the 4th switching tube, first motor respectively
Even；
The source electrode of 5th switching tube input terminal phase with the tertiary winding in the drain electrode of the 6th switching tube, first motor respectively
Even；
The source electrode of 7th switching tube input terminal phase with the first winding in the drain electrode of the 8th switching tube, the second motor respectively
Even；
The source electrode of 9th switching tube input terminal phase with the second winding in the drain electrode of the tenth switching tube, the second motor respectively
Even；
The source electrode of 11st switching tube input terminal with the tertiary winding in the drain electrode of the 12nd switching tube, the second motor respectively
It is connected；
The neutral point of the neutral point of the first motor and the second motor is connected.
As the further prioritization scheme of bi-motor error-tolerance type inverter of the present invention, the described first to the 12nd switching tube is adopted
With any one in IGBT, MOSFET, bipolar transistor.
The invention also discloses a kind of fault tolerant control methods based on the bi-motor error-tolerance type inverter, include following step
It is rapid:
The first, second switching tube is enabled to form first via inverter bridge leg, third, the 4th switching tube form the second road inverter bridge leg, the
Five, the 6th switching tube forms third road inverter bridge leg, and the seven, the 8th switching tubes form the 4th road inverter bridge leg, and the nine, the tenth open
It closes pipe and forms the 5th road inverter bridge leg, the 11st, the 12nd switching tube the 6th road inverter bridge leg of composition；Then described first to the 6th
Inverter bridge leg is corresponded with first in first in first motor to the tertiary winding, the second motor to the tertiary winding respectively,
Wherein, first to third inverter bridge leg composition first motor driving, the 4th to the 6th inverter bridge leg form the second motor drive
It is dynamic；
When any phase winding failure or six road inverter bridge legs in first motor in bi-motor error-tolerance type inverter or the second motor
When arbitrarily breaking down all the way:
Step 1), if any phase winding failure in first motor or the second motor, the corresponding inverter bridge of block failure winding
Arm；If a certain inverter bridge leg breaks down, the inverter bridge leg is blocked；
Step 2 is reconstructed to being blocked the corresponding motor of inverter bridge leg and its driving, becomes two-phase-region casting；
The motor of step 3), control reconfiguration will generate alternating current in the neutral conductor, and make the alternating current by reconstruct motor
Neutral point flows into neutral point, the zero-sequence current as normal motor of normal motor, realizes fault-tolerant operation.
The invention adopts the above technical scheme compared with prior art, has following technical effect that
Bi-motor error-tolerance type topology provided by the invention can be independently controlled bi-motor when operating normally.And it is sending out
When raw bridge arm failure, motor and inverter are improved design by the present invention as a whole, on the basis of not increasing switching tube,
It can continue to fault-tolerant operation, significantly reduce the number of switching tube, therefore cost can be effectively reduced.
Detailed description of the invention
Fig. 1 is bi-motor error-tolerance type inverter topology schematic diagram of the present invention；
Fig. 2 is three bridge arms, nine switching inverter of double alternating current generator drivings in the prior art；
Fig. 3 is Dual-motors Driving inverter in the prior art；
Fig. 4 is the inverter topology for being used for bi-motor in the prior art；
Fig. 5 is two motor fault-tolerant type inverter in the prior art；
Fig. 6 is five leg inverter in the prior art.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing:
The present invention can be embodied in many different forms, and should not be assumed that be limited to the embodiments described herein.On the contrary, providing
These embodiments are thoroughly and complete to make the disclosure, and will give full expression to the scope of the present invention to those skilled in the art.
In the accompanying drawings, for the sake of clarity it is exaggerated component.
As shown in Figure 1, the invention discloses a kind of bi-motor error-tolerance type inverter, including positive bus-bar, negative busbar, capacitor C,
First switch tube bridge arm, second switch bridge arm, third switching tube bridge arm, the 4th switching tube bridge arm, the 5th switching tube bridge arm,
Six switching tube bridge arms, first motor and the second motor.
The first switch tube bridge arm, including first switch tube S1 and second switch S2, are connected in series in the positive pole
Between line and the negative busbar；The second switch bridge arm, including third switching tube S3 and the 4th switching tube S4 are connected in series
Between the positive bus-bar and the negative busbar；The third switching tube bridge arm, including the 5th switching tube S5 and the 6th switching tube
S6 is connected in series between the positive bus-bar and the negative busbar；The 4th switching tube bridge arm, including the 7th switching tube S7 and
8th switching tube S8 is connected in series between the positive bus-bar and the negative busbar；The 5th switching tube bridge arm, including the 9th
Switching tube S9 and the tenth switching tube S10, is connected in series between the positive bus-bar and the negative busbar；The 6th switch pipe bridge
Arm, including the 11st switching tube S11 and the 12nd switching tube S12, are connected in series between the positive bus-bar and the negative busbar；
The three-phase power line of first motor M1 is connected between first switch tube S1 and second switch S2, third switching tube S3
And the 4th between switching tube S4, between the 5th switching tube S5 and the 6th switching tube S6.The three-phase power line of second motor M2, respectively
Be connected between the 7th switching tube S7 and the 8th switching tube S8, between the 9th switching tube S9 and the tenth switching tube S10, the 11st open
It closes between pipe S11 and the 12nd switching tube S12.
The first neutral point N1 of the first motor M1 is connect with the second neutral point N2 of the second motor M2.
The first switch tube S1 to the 12nd switching tube S12 can use IGBT, MOSFET, bipolar transistor simultaneously
Any one in pipe.
The invention also discloses a kind of fault tolerant control methods based on the bi-motor error-tolerance type inverter, include following step
It is rapid:
The first, second switching tube is enabled to form first via inverter bridge leg, third, the 4th switching tube form the second road inverter bridge leg, the
Five, the 6th switching tube forms third road inverter bridge leg, and the seven, the 8th switching tubes form the 4th road inverter bridge leg, and the nine, the tenth open
It closes pipe and forms the 5th road inverter bridge leg, the 11st, the 12nd switching tube the 6th road inverter bridge leg of composition；Then described first to the 6th
Inverter bridge leg is corresponded with first in first in first motor to the tertiary winding, the second motor to the tertiary winding respectively,
Wherein, first to third inverter bridge leg composition first motor driving, the 4th to the 6th inverter bridge leg form the second motor drive
It is dynamic；
When any phase winding failure or six road inverter bridge legs in first motor in bi-motor error-tolerance type inverter or the second motor
When arbitrarily breaking down all the way:
Step 1), if any phase winding failure in first motor or the second motor, the corresponding inverter bridge of block failure winding
Arm；If a certain inverter bridge leg breaks down, the inverter bridge leg is blocked；
Step 2 is reconstructed to being blocked the corresponding motor of inverter bridge leg and its driving, becomes two-phase-region casting；
The motor of step 3), control reconfiguration will generate alternating current in the neutral conductor, and make the alternating current by reconstruct motor
Neutral point flows into neutral point, the zero-sequence current as normal motor of normal motor, realizes fault-tolerant operation.
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely a specific embodiment of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (3)
1. bi-motor error-tolerance type inverter, which is characterized in that include capacitor, the first to the 12nd switching tube, first motor and the
Two motors；
The first motor, the second motor are all made of three-phase winding motor, comprising first to the tertiary winding；
Described capacitor one end is switched with external power supply anode, the drain electrode of first switch tube, the drain electrode of third switching tube, the 5th respectively
The drain electrode of pipe, the drain electrode of the 7th switching tube, the drain electrode of the 9th switching tube, the drain electrode of the 11st switching tube are connected, other end difference
With external power supply cathode, the source electrode of second switch, the source electrode of the 4th switching tube, the 6th switching tube source electrode, the 8th switching tube
Source electrode, the source electrode of the tenth switching tube, the 12nd switching tube source electrode be connected；
The source electrode of the first switch tube input terminal phase with the first winding in the drain electrode of second switch, first motor respectively
Even；
The source electrode of the third switching tube input terminal phase with the second winding in the drain electrode of the 4th switching tube, first motor respectively
Even；
The source electrode of 5th switching tube input terminal phase with the tertiary winding in the drain electrode of the 6th switching tube, first motor respectively
Even；
The source electrode of 7th switching tube input terminal phase with the first winding in the drain electrode of the 8th switching tube, the second motor respectively
Even；
The source electrode of 9th switching tube input terminal phase with the second winding in the drain electrode of the tenth switching tube, the second motor respectively
Even；
The source electrode of 11st switching tube input terminal with the tertiary winding in the drain electrode of the 12nd switching tube, the second motor respectively
It is connected；
The neutral point of the neutral point of the first motor and the second motor is connected.
2. bi-motor error-tolerance type inverter according to claim 1, which is characterized in that the described first to the 12nd switching tube
Using any one in IGBT, MOSFET, bipolar transistor.
3. the fault tolerant control method based on bi-motor error-tolerance type inverter described in claim 1, which is characterized in that comprising following
Step:
The first, second switching tube is enabled to form first via inverter bridge leg, third, the 4th switching tube form the second road inverter bridge leg, the
Five, the 6th switching tube forms third road inverter bridge leg, and the seven, the 8th switching tubes form the 4th road inverter bridge leg, and the nine, the tenth open
It closes pipe and forms the 5th road inverter bridge leg, the 11st, the 12nd switching tube the 6th road inverter bridge leg of composition；Then described first to the 6th
Inverter bridge leg is corresponded with first in first in first motor to the tertiary winding, the second motor to the tertiary winding respectively,
Wherein, first to third inverter bridge leg composition first motor driving, the 4th to the 6th inverter bridge leg form the second motor drive
It is dynamic；
When any phase winding failure or six road inverter bridge legs in first motor in bi-motor error-tolerance type inverter or the second motor
When arbitrarily breaking down all the way:
Step 1), if any phase winding failure in first motor or the second motor, the corresponding inverter bridge of block failure winding
Arm；If a certain inverter bridge leg breaks down, the inverter bridge leg is blocked；
Step 2 is reconstructed to being blocked the corresponding motor of inverter bridge leg and its driving, becomes two-phase-region casting；
The motor of step 3), control reconfiguration will generate alternating current in the neutral conductor, and make the alternating current by reconstruct motor
Neutral point flows into neutral point, the zero-sequence current as normal motor of normal motor, realizes fault-tolerant operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810767813.1A CN108964523A (en) | 2018-07-13 | 2018-07-13 | Bi-motor error-tolerance type inverter |
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| CN201810767813.1A CN108964523A (en) | 2018-07-13 | 2018-07-13 | Bi-motor error-tolerance type inverter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109713928A (en) * | 2018-12-30 | 2019-05-03 | 东北电力大学 | Four bridge legs dual output inverter SVPWM method under unbalanced load |
| WO2020125249A1 (en) * | 2018-12-18 | 2020-06-25 | 南京航空航天大学 | Active fault tolerance and fault mitigation system based on steer-by-wire dual motors and control method therefor |
| CN112440782A (en) * | 2019-08-30 | 2021-03-05 | 比亚迪股份有限公司 | Electric automobile and control method and device of charging system of electric automobile |
| CN112910301A (en) * | 2021-01-05 | 2021-06-04 | 上海大学 | Double three-phase load nine-switch inverter control system and method |
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| JP2008245372A (en) * | 2007-03-26 | 2008-10-09 | Toyota Motor Corp | Electric vehicle |
| CN104184380A (en) * | 2014-09-18 | 2014-12-03 | 福州大学 | One-phase-failure fault-tolerant torque control method of 60-degree offset six-phase permanent magnet synchronous motor |
| CN107959362A (en) * | 2017-11-24 | 2018-04-24 | 江苏大学 | A kind of fault tolerant control method of multi-mode two channel switch reluctance motor system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2003219692A (en) * | 2002-01-25 | 2003-07-31 | Ihi Aerospace Co Ltd | Redundant motor device |
| JP2008245372A (en) * | 2007-03-26 | 2008-10-09 | Toyota Motor Corp | Electric vehicle |
| CN104184380A (en) * | 2014-09-18 | 2014-12-03 | 福州大学 | One-phase-failure fault-tolerant torque control method of 60-degree offset six-phase permanent magnet synchronous motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2020125249A1 (en) * | 2018-12-18 | 2020-06-25 | 南京航空航天大学 | Active fault tolerance and fault mitigation system based on steer-by-wire dual motors and control method therefor |
| CN109713928A (en) * | 2018-12-30 | 2019-05-03 | 东北电力大学 | Four bridge legs dual output inverter SVPWM method under unbalanced load |
| CN112440782A (en) * | 2019-08-30 | 2021-03-05 | 比亚迪股份有限公司 | Electric automobile and control method and device of charging system of electric automobile |
| CN112440782B (en) * | 2019-08-30 | 2022-06-14 | 比亚迪股份有限公司 | Electric automobile and control method and device of charging system of electric automobile |
| CN112910301A (en) * | 2021-01-05 | 2021-06-04 | 上海大学 | Double three-phase load nine-switch inverter control system and method |
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