CN105391366B - A kind of structure changes electric system - Google Patents
A kind of structure changes electric system Download PDFInfo
- Publication number
- CN105391366B CN105391366B CN201510981655.6A CN201510981655A CN105391366B CN 105391366 B CN105391366 B CN 105391366B CN 201510981655 A CN201510981655 A CN 201510981655A CN 105391366 B CN105391366 B CN 105391366B
- Authority
- CN
- China
- Prior art keywords
- winding
- power
- topological structure
- bridge arm
- switch
- 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.)
- Active
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The present invention relates to a kind of structure changes electric system, including master controller, varistructure formula driver and independent winding motor；Master controller receives the feedback information of control instruction and permanent magnetism independent winding motor, and generate power drive and drive topological structure changes instruction, driving topological structure is entered line translation by varistructure formula driver according to the topological structure changes instruction of driving, the winding type of drive of independent winding motor is transformed to N number of star structure or independent H-bridge structure by varistructure formula driver, when wherein using independent H-bridge structure, multiple windings in series of motor are got up, varistructure formula driver is according to power drive order-driven independent winding motor.The structure changes electric system of the present invention, can meet different duty requirements, compared to more motor+clutch configurations, can be effectively reduced motor driven systems weight and volume, and effectively improve power density, eliminate mechanical noise.
Description
Technical field
The present invention relates to a kind of structure changes electric system, belong to machine field.
Background technology
With the development of high power density magnet and power device, electric system especially permanent magnet motor system application scenario
Constantly expand, such as full electric car, full electric tank, the electric naval vessel etc. that developed now, electric system is as said system
Crucial actuating unit and propulsive power source, its duty requirements is often more complicated and often changeable, for example is frequently encountered
At a high speed, the operating mode such as low speed, underloading, overload, normal and failure.
In the prior art, in order that electric system meets different driving working condition requirements, two motors of generally use+from
Clutch structure, such as high-speed electric expreess locomotive+slowspeed machine, according to different duty requirements, are switched corresponding motor and entered by clutch
Row work.Although the structure can improve different duty requirements, because two motors are not to work simultaneously, and clutch
For device in order to meet various working, its volume and weight is all very big, so as to cause system power-density very low, and due to from
The presence of clutch so that system effectiveness is relatively low, can also produce larger mechanical shock and noise in addition.
Key subsystem of the electric system as electromechanical energy conversion systems, its performance determine and affected electromechanical energy
Measure the performance of converting system.How fundamentally to solve above-mentioned contradiction, allow electric system to meet that multi-state demand is this
Field technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of structurally variable, power density is high, has and holds
The highly reliable structure changes electric system of wrong ability.
The object of the invention is achieved by following technical solution：
A kind of structure changes electric system, including master controller, the first driver, current acquisition module and independent winding are provided
Motor；
The electric current of each winding output of current acquisition module collection independent winding motor is simultaneously transferred to master controller；
Independent winding motor has 2N winding, N >=2；
First driver includes power transistor driver, switch driver, power tube group and power switch group；
Power tube group includes 4N H bridge arm；Each H bridge arms include the first power tube and the second power tube, the first power tube
Source electrode connect the second power tube drain electrode；
Power switch group includes power supply group and 4N power switch；Power supply group includes N number of dc power power supply, each direct current
Power power-supply has positive output terminal and negative output terminal；
The positive output terminal of i-th of dc power power supply connects the first incoming end of i-th and the 2N+i power switch,
Second incoming end of i-th of power switch connects the drain electrode of the i-th Q1 and Q1 the first power tubes, the i-th Q1 the first power
The source electrode of pipe is connected with the first end of i-th of winding of independent winding motor, the source electrode of (N+i) Q1 the first power tubes with solely
The first end of the N+i winding of vertical winding electric machine is connected；Negative output terminal connection N+i of i-th of dc power power supply
With the first incoming end of the 3N+i power switch, the second incoming end of the N+i power switch connects the i-th Q4 and (N+
I) source electrode of Q4 the second power tubes, the second incoming end of the 3N+i power switch connect the i-th Q2 and (N+i) Q2 individual the
The source electrode of two power tubes；Second incoming end of the 2N+i power switch (51) connects the i-th Q3 and (N+i) Q3 the first work(
The drain electrode of rate pipe, the source electrode of the i-th Q3 the first power tubes are connected with the second end of i-th of winding of independent winding motor (30),
The source electrode of (N+i) Q3 the first power tubes is connected with the second end of the N+i winding of independent winding motor；1≤i≤N-1；
The power transistor driver, the control command driving power Guan Zuzhong sent according to master controller the first power tube
With the second power tube；
4N power switch in the control command driving power switches set that switch driver is sent according to master controller；
The master controller receives the electric current of each winding output, performs fault diagnosis algorithm, judges whether to break down,
When a failure occurs it, abort situation and fault type are diagnosed to be, and fault recovery is realized by changing driving topological structure；Receive
The control command that host computer is sent, and control command is transmitted to power transistor driver and switch driver.
Preferably, first driver can form N number of H bridges according to control instruction and drive topological structure or 2N H bridge
Drive topological structure；The driving topological structure constituted mode of 2N H bridge is：Open 4N power switch and all the first power
Pipe and the second power tube；The driving topological structure constituted mode of N number of H bridges is：Open iQ1, iQ4, (N+i) Q1 and (N+i) Q4；And
The the 1st to N and N+1 to 2N power switch is opened, closes 2N+1 to 3N and 3N+1 to 4N power switch；And close
IQ3 and (N+i) Q3, iQ2 and (N+i) Q2 is opened, or open iQ3 and (N+i) Q3, closed iQ2 and (N+i) Q2, realize i-th
The series connection of winding and the N+i winding.
Preferably, first driver can form N number of H bridges according to control instruction and drive topological structure or 2N H bridge
Drive topological structure；The driving topological structure constituted mode of 2N H bridge is：Open 4N power switch and all the first power
Pipe and the second power tube；The driving topological structure constituted mode of N number of H bridges is：Open iQ2, iQ3, (N+i) Q2 and (N+i) Q3；And
The the 1st to N and N+1 to 2N power switch (51) is closed, opens 2N+1 to 3N and 3N+1 to 4N power switch (51)；
And iQ1 and (N+i) Q1 are closed, opens iQ4 and (N+i) Q4, or opens iQ1 and (N+i) Q1, closes iQ4 and (N+i) Q4,
Realize the series connection of i-th of winding and the N+i winding.
Preferably, it is by way of changing driving topological structure and realizing fault recovery：When driving topological structure is N number of H
Bridge drives topological structure, two of branch road where the two windings connection H bridge arms and closing fault of branch road where closing fault around
Group connection power switch；When driving topological structure is 2N H bridges driving topological structure, winding connects on the branch road where closing fault
The H bridge arms connect.
Preferably, first driver also includes overcurrent protection module and programmable logic controller (PLC), FPGA
Controller receives the control command that master controller is sent and is sent to H bridge arms and power switch group；The current acquisition module is adopted
Per phase winding, the electric current of output is also transmitted to the overcurrent protection module of the first driver to collection independent winding motor, when certain mutually some around
When the electric current of group output exceedes setting electric current threshold value, overcurrent protection module exports the over-current signal of the winding to FPGA
Controller；When driving topological structure is that N number of H bridges drive topological structure, two windings of branch road connect H bridge arms where closing fault
Power switch is connected with two windings of branch road where closing fault；When driving topological structure is 2N H bridge driving topological structure,
The H bridge arms that winding connects on branch road where closing fault.
Preferably, first driver also includes overtemperature protection module, overtemperature protection module collection independent winding motor
Temperature per phase winding, when the temperature of certain mutually some winding output exceedes design temperature threshold value, overtemperature protection module is by the phase
The heat alarm of winding is exported to programmable logic controller (PLC), when driving topological structure is that N number of H bridges drive topological structure, closing
Two windings connection H bridge arms of guilty culprit branch road connect power switch with two windings of branch road where closing fault；Work as drive
Dynamic topological structure is 2N H bridges driving topological structure, the H bridge arms of winding connection on the branch road where closing fault.
Preferably, the current threshold is 2-5 times of current value of winding rated output；Preferably, the temperature threshold
For 150 °~200 °.
Preferably, the control instruction that master controller is sent includes N number of H bridges driving topological structure, the driving of H bridge parallel connections underloading is opened up
Flutter structure, H bridge parallel connection drivens topological structure, H bridges heavy duty driving topological structure in parallel；Control instruction is H bridge parallel connection underloadings
Topological structure is driven, opens 4N power switch, opens the H bridge arms of winding 1W-NW both ends connection, or open winding (N+1)
The H bridge arms of W-2NW both ends connection；When control instruction is H bridge parallel connection driven topological structures, 4N power switch is opened, is opened
Whole H bridge arms are opened, the opening time of H bridge arms is 30%-60%；When control instruction is that the heavy duty in parallel of H bridges drives topological structure, open
4N power switch is opened, opens whole H bridge arms, the opening time of H bridge arms is more than 70%.
Preferably, fault diagnosis algorithm concretely comprises the following steps：
1) each phase current that current sensor gathers in real time, each phase current is subjected to a square processing, and adjacent two-phase is electric
Levelling side, which make the difference, tries to achieve the mutual residual error of each phase current；
2) to it is normal when the mutual residual error of each phase current carry out norm calculation or mathematic expectaion calculates, establish normal each phase current
Norm value table or mathematical expectation table during mutual residual error；
3) the mutual residual error of each phase current obtained to step 1) carries out norm calculation or mathematic expectaion calculates, by right in real time
Residual norm value more mutual than each phase current or mathematical expectation with it is normal when each phase current mutual residual error when norm value or mathematics phase
Prestige value, judge fault type and the particular location to break down, and realize Fault Identification and isolation.
Preferably, it is according to the specific method that mathematical expectation judges fault type and position occurs：
If the electric current number of phases is odd number,
If the electric current number of phases is even number,
Preferably, it is according to the specific method that norm value judges fault type and position occurs：
If the electric current number of phases is odd number,
If the electric current number of phases is even number,
Preferably, master controller is found after the power tube failure in winding or power tube group being present, is driven if N number of H bridges
Dynamic topological structure, two windings of branch road connect where the two windings connection H bridge arms and closing fault of branch road where closing fault
Power switch is connect, and takes and keeps the constant strategy of magnetomotive force before and after failure, adjusts the output current amplitude and phase of non-faulting phase
Position；If H bridge parallel connections underloading driving topological structure, the H bridge arms of winding connection, are opened another on the branch road where closing fault
The H bridge arms being connected in group with the winding function phase with winding, or whole group power tube is closed, it is in parallel to open another set H bridges
Underloading drives topological structure；If H bridge parallel connection driven topological structures, winding connects on the branch road where closing fault
H bridge arms, adjust and doubled with the output current amplitude of failure phase function identical non-faulting phase, phase invariant；It is in parallel if H bridges
Heavy duty driving topological structure, the H bridge arms of winding connection, adjustment are non-with failure phase function identical on the branch road where closing fault
The output current amplitude of failure phase doubles, phase invariant.
Preferably, when the volume or weight of the first driver exceedes given threshold, first driver replaces with
Two drivers；
It is single that second driver includes power transistor driver, switch driver, power switch group and 2N winding driving
Member；
Each winding driver element connects the first connection end of a winding, there is provided coil-driven current；
The power switch group includes multiple power switch, forms N-1 switch series unit and an independent switch, opens
It is only as first to close first switch, second switch and the 3rd switch, one end of first switch that series unit includes being sequentially connected in series
Vertical end, the first switch other end are connected with second switch one end, connection end as the first common port, the other end of second switch and
One end connection of 3rd switch, connection end is as the second common port, and the other end of the 3rd switch is as the second separate end；I-th
Switch series unit the first common port connection i+1 switch series unit the first separate end and i+1 winding the
Two ends；The second separate end and N+i+ of the second common port connection i+1 switch series unit of i-th of switch series unit
Second end of 1 winding；The first end of independent switch connects the first separate end and the 1st winding of first switch series unit
The second end, the second end of independent switch connect the 1st switch series unit the second separate end and the N+1 winding second
End；Wherein 1≤i≤N-1；
Driver element controller, control whether 2N winding driver element provides coil-driven current according to control command；
Switch driver controls the power switch on or off in power switch group according to control command.
Preferably, the winding driver element, including the first power tube and the second power tube, the source electrode of the first power tube connect
Connect the drain electrode of the second power tube, the drain electrode connection power end of the first power tube, the source ground of the second power tube, the first power tube
With the grid of the second power tube as control terminal, the source electrode of the first power tube also with a winding of independent winding motor first
End is connected.
Preferably, the second driver also includes programmable logic controller (PLC), and programmable logic controller (PLC) receives master controller
The control command of transmission is simultaneously sent to power transistor driver and switch driver.
Preferably, described power switch group can form H bridges driving topological structure, star driving according to control instruction
Topological structure；The method for forming H bridges driving topological structure is：Open the in independent switch and each switch series unit
Two switches, the first switch closed in each switch series unit and the 3rd switch；The method for forming star driving topological structure
For：The first switch and/or the 3rd switch in each switch series unit are opened, closes an independent switch and each switch series
Second switch in receipts or other documents in duplicate member.
Preferably, realize that the method for fault recovery is by changing driving topological structure：When driving topological structure drives for H bridges
During dynamic topological structure, the winding driver element and second switch or independent switch of branch road where closing fault；When driving topology
When structure is that star drives topological structure, winding driver element in star driving topology where closing fault and first open
Close or the 3rd switchs, or star driving topological structure is changed to H bridges driving topological structure, and branch road where closing fault
Winding driver element and second switch or independent switch.
Preferably, the control instruction that master controller is sent includes underloading H bridges driving topological structure, normal H bridges driving topology
Structure, heavily loaded H bridges driving topological structure, underloading star driving topological structure, normal star driving topological structure or heavily loaded star
Drive topological structure；When control instruction is that underloading H bridges drive topological structure, an independent switch and each switch series are opened in control
Second switch in receipts or other documents in duplicate member, opening time are less than 30%, the first switch and the 3rd closed in each switch series unit
Switch；When control instruction is that normal H bridges drive topological structure, control is opened in an independent switch and each switch series unit
Second switch, opening time 30%-60%, the first switch closed in each switch series unit and the 3rd switch；Control
When system instruction drives topological structure for heavily loaded H bridges, second in an independent switch and each switch series unit is opened in control
Switch, opening time are more than 70%, the first switch closed in each switch series unit and the 3rd switch；Control instruction is
When underloading star drives topological structure, first switch or the 3rd switch in each switch series unit are opened in control, during unlatching
Between be less than 30%, the second switch closed in independent switch and each switch series unit；Control instruction is normal star
When shape drives topological structure, first switch and the 3rd switch, opening time in each switch series unit of control unlatching are
30%-60%, the second switch closed in an independent switch and each switch series unit；Control instruction is driven for heavily loaded star
During dynamic topological structure, first switch and the 3rd switch in each switch series unit are opened in control, the opening time be 70% with
On, close an independent switch and each second switch switched in series unit.
Preferably, master controller is found after the power tube failure in winding or winding driver element being present, when driving topology
When structure is that H bridges drive topological structure, the winding driver element and second switch or independent switch of branch road where closing fault,
And take and keep the constant strategy of magnetomotive force before and after failure, adjust the output current amplitude and phase of non-faulting branch road；
When it is that star drives topological structure to drive topological structure, the winding in star driving topology where closing fault
Driver element and first switch or the 3rd switch, the output current amplitude of adjustment non-faulting branch road double, phase invariant；Or
Star driving topological structure is changed to H bridges driving topological structure, and takes and keeps the constant strategy of magnetomotive force before and after failure, is adjusted
The output current amplitude and phase of whole non-faulting branch road, turn off the winding driver element and second switch of guilty culprit branch road
Or independent switch (S0), the output current amplitude of adjustment non-faulting branch road double, phase invariant.
Preferably, it is unrestricted to driver volume and weight, while when requiring the mutual redundancy backup of each winding, using
One driver；When being limited to driver volume and weight, while requiring the mutual redundancy backup of every group of winding, using the second driving
Device.
Preferably, the master controller includes the first control unit and the second control unit, first control unit and
Second control unit is mutually redundant backup.
The present invention has the following advantages that compared with prior art：
(1) structure changes electric system of the invention, combined by the different break-makes of a set of power tube group and power switch group,
It is the function that a variety of motors can be achieved using a set of motor, by entering line translation, different duty requirements can be met, compared to more electric
Machine+clutch mechanism formula structure changes, can be effectively reduced motor driven systems weight and volume, and it is close to effectively improve power
Degree, reliability, security and system effectiveness, while clutch is mechanically eliminated, so as to fundamentally eliminate mechanical shock
With noise
(2) the first driver of present invention setting includes H bridge tandem drives topological structure, underloading H bridges drive topological structure, just
Normal H bridges driving topological structure, heavily loaded H bridges driving topological structure drive topological working condition for totally four kinds, can meet various working need
Ask；In the case where a certain phase winding breaks down, other mode of operations can be switched to, improve system service efficiency and
Power density.
(3) electric system of the invention can realize that the failure caused by winding and driver equivalent to winding failure is examined
It is disconnected, and troubleshooting can be carried out, the safe handling of follow-up equipment is not influenceed.
(4) present invention can be realized that On-line Fault is handled, avoided system and lost completely by the switching of different driving topology
Economic loss caused by effect, brand-new solution is provided for the troubleshooting of electric system.Electric system is imparted to dislike
The application higher to security requirement such as the self-repairing capability in bad environment, the Aeronautics and Astronautics that is particularly suitable for use in, navigation, nuclear power
Occasion；
(5) modularization of the present invention sets two kinds of activation configurations, can be entered according to the requirement of practical application and reliability
Row module selects, and selection face is wider, and applicability is stronger.
(6) present invention set the second driver, including underloading H bridges driving topological structure, normal H bridges driving topological structure,
Heavily loaded H bridges driving topological structure, underloading star driving topological structure, normal star driving topological structure or the driving of heavily loaded star are opened up
Structure is flutterred, totally six kinds of topological working conditions of driving, can meet various working demand；In the situation that a certain phase winding breaks down
Under, other mode of operations can be switched to, improve the service efficiency and power density of system.
Brief description of the drawings
Fig. 1 is the structural representation of the structure changes fault tolerant type electric system of the present invention；
Fig. 2 is the structural representation of varistructure driver of the present invention；
Fig. 3 is the winding electric machine structural representation of the present invention；Wherein Fig. 3 (a) is that individual layer centralization winding electric machine structure is shown
It is intended to；Fig. 3 (b) is double-deck centralized winding electric machine structural representation；Fig. 3 (c) is single two-layer hybrid centralization winding electric machine knot
Structure schematic diagram；
Fig. 4 is that 2 × N phase varistructures formula of the present invention drives the Organization Chart of topological structure；
Fig. 5 is that the six phase varistructure formulas of the present invention drive the Organization Chart of topological structure；
Fig. 6 is the fault diagnosis algorithm schematic diagram of the present invention；
Fig. 7 is that second driver 2 × N phase varistructures formula of the present invention drives the Organization Chart of topological structure；
Fig. 8 is that the phase varistructure formula of the second driver six of the present invention drives the Organization Chart of topological structure；
Fig. 9 is the structural representation of the driver of varistructure second of the present invention.
Embodiment
As shown in figure 1, structure changes electric system proposed by the present invention is illustrated with the main Solid rocket engine on naval vessel.In the present invention
In, structure changes electric system includes master controller 10, varistructure formula driver 20 and independent winding motor 30, wherein, it is described
Master controller 10 receives the feedback information of control instruction and independent winding motor 30, and generates power drive and driving topology change knot
Structure instructs, and according to different duty requirements, the varistructure formula driver 20 drives the winding of the independent winding motor 30
Flowing mode is transformed to N number of star structure or independent H-bridge structure, wherein during using independent H-bridge structure, by multiple windings of motor
Be together in series driving, the varistructure formula driver 20 independent winding motor according to the power drive order-driven
30。
Independent winding motor 30 is modularized motor, including 2N winding 31, wherein, N >=2, with 12 grooves as shown in Figure 3
Exemplified by 10 pole permanent magnet motors, two terminals of winding 31 are all drawn outside motor casing, and winding 31 can use individual layer, bilayer or Dan Shuan
Layer mixes centralized winding construction, as shown in Fig. 3 (a), winding 31 wherein described in the adjacent two-phase of individual layer centralization winding construction
It is mutually isolated by fault-tolerant teeth 32, as shown in Fig. 3 (b), described in the adjacent two-phase of double-deck centralized winding construction among winding 31
There is no fault-tolerant teeth 32；By taking the phase magneto of 12 groove, 10 pole 9 as shown in Fig. 3 (c) as an example, single two-layer hybrid centralization winding construction
Every three windings 31 form a three-phase windings overall 33, each three-phase windings overall 33 pass through the phase of fault-tolerant teeth 32
Mutually isolation.
The major function of master controller 10 includes：Receive the control that higher level's control system (such as naval vessel central control system) is sent
System instruction, demodulation motor rotor position, each phase current of collection and temperature, closed-loop control, driving topological structure conversion etc.；Main control
Device 10 is driven control according to control instruction and current driving topological structure to independent winding motor 30, adjust in real time export to
The control instruction of follow-up varistructure formula driver 20；Master controller 10 is carrying out closed loop control according to the electric current and temperature of collection
System simultaneously, is protected so that motor is in safe work state to follow-up varistructure formula driver 20.
Master controller 10 includes the first control unit and the second control unit, the first control unit and the second control unit pair
The control instruction of reception is checked, and can eliminate false command caused by interference, while the first control unit and the second control
The drive and control of electric machine of output and the instruction of topological structure changes are mutually authenticated unit, prevent the control instruction of output error.And
First control unit and the second control unit mutually monitor, after a control unit breaks down, another normal control
Unit can be blocked the output of faulty control unit, realized and mutually monitored the function of mutually backing up between double-core.Two
Control unit can be two control cores separate in two independent controllers or a controller, example
Such as dual-core controller.
With reference to shown in Fig. 2, varistructure formula driver 20 mainly includes programmable logic controller (PLC) 21, power transistor driver
22nd, switch driver 23, power tube group 24, power switch group 25 and excessively stream and overheating protection circuit 26；Programmable logical controller
Device 21 has the input being connected with master controller 10, and the output end of control power tube group 24 and power switch group 25；Work(
The varistructure that rate pipe group 24 and power switch group 25 are formed drives topological output end, with the winding 31 of independent winding motor 30
Terminals subnumber is equal, and corresponding connection；Varistructure formula driver 20 can according to the control instruction mapped structure of main control 10,
The winding type of drive of independent winding motor 30 is transformed to N number of star structure or independent H-bridge structure, wherein using independent H
During bridge structure, multiple windings 31 of independent winding motor 30 are together in series driving, varistructure formula driver 20 is according to power
Driving instruction driving independent winding motor 30；Varistructure formula driver 20 also includes power transistor driver 22 and switch driver
23, the input of power transistor driver 22 and switch driver 23 is connected with the output end of programmable logic controller (PLC) 21, power
Control terminal of the output end of pipe driver 22 and switch driver 23 respectively with power tube group 24 and power switch group 25 is connected；Can
Structure changes formula driver 20 also includes excessively stream and overheating protection circuit 26, and the output end of excessively stream and overheating protection circuit 26 is with that can compile
The connection corresponding with temperature protection signal input of the excessively stream of journey logic controller 21.
Driver 20 can form N number of H bridges according to control instruction and drive topological structure or 2N H bridges driving topological structure；
The driving topological structure constituted mode of 2N H bridge is：Open 4N power switch 51 and all the first power tube and the second work(
Rate pipe, realize H bridges driving in parallel；The driving topological structure constituted mode of N number of H bridges is：(1) open iQ1, iQ4, (N+i) Q1 and
(N+i)Q4；(2) the 1st to N and N+1 to 2N power switch (51) is opened, closes 2N+1 to 3N and 3N+1 to 4N work(
Rate switchs (51)；(3) iQ3 and (N+i) Q3 is closed, opens iQ2 and (N+i) Q2, or opens iQ3 and (N+i) Q3, closes iQ2
(N+i) Q2, realizes the series connection of i-th of winding and the N+i winding.
When driving topological structure is that N number of H bridges drive topological structure, two windings of branch road connect H bridges where closing fault
Arm 45 connects power switch 51 with two windings of branch road where closing fault；When driving topological structure is that 2N H bridges driving is opened up
Flutter structure, the H bridge arms 45 of winding connection on the branch road where closing fault.
The electric current that current acquisition module collection independent winding motor 30 exports per phase winding is also transmitted to the mistake of driver 20
Protection module is flowed, when the electric current of certain phase winding output exceedes setting electric current threshold value, overcurrent protection module is by the excessively stream of the winding
Signal output is to programmable logic controller (PLC)；Overtemperature protection module collection independent winding 30 temperature per phase winding of motor, when certain
The temperature of phase winding output is when exceeding design temperature threshold value, and overtemperature protection module exports the heat alarm of the phase winding to can compile
Journey logic controller；The current threshold is 2-5 times of the current value of winding rated output；Preferably, the temperature threshold is
150 °~200 °.
The control instruction that master controller is sent includes N number of H bridges driving topological structure, H bridge parallel connections underloading drives topological structure,
H bridge parallel connection drivens topological structure, H bridges heavy duty driving topological structure in parallel；Control instruction is H bridge parallel connections underloading driving topology
Structure, 4N power switch 51 is opened, open the H bridge arms 45 of winding 1W-NW both ends connection, or open winding (N+1) W-2NW
The H bridge arms 45 of both ends connection；When control instruction is H bridge parallel connection driven topological structures, 4N power switch 51 is opened, is opened
Whole H bridge arms 45, the opening time of H bridge arms 45 is 30%-60%；When control instruction is that the heavy duty in parallel of H bridges drives topological structure,
4N power switch 51 is opened, opens whole H bridge arms 45, the opening time of H bridge arms 45 is more than 70%.
Master controller is found after the power tube failure in winding or power tube group 24 being present, and topology is driven if N number of H bridges
Structure, two windings connection H bridge arms 45 of branch road where closing fault connect work(with two windings of branch road where closing fault
Rate switch 51, and take and keep the constant strategy of magnetomotive force before and after failure, adjust the output current amplitude and phase of non-faulting phase；
If H bridge parallel connections underloading driving topological structure, the H bridge arms 45 of winding connection, are opened another on the branch road where closing fault
The H bridge arms 45 being connected in group with the winding function phase with winding, or whole group power tube is closed, open another set H bridges simultaneously
Join underloading driving topological structure；If H bridge parallel connection driven topological structures, winding connects on the branch road where closing fault
H bridge arms 45, adjustment and the output current amplitude of failure phase function identical non-faulting phase double, phase invariant；If H bridges
Heavy duty driving topological structure in parallel, the H bridge arms 45 of winding connection, adjustment and failure phase function phase on the branch road where closing fault
The output current amplitude of same non-faulting phase doubles, phase invariant.
In the present invention, master controller 10 can be based on DSP or ARM microprocessor is formed, and realize the resolving of control instruction, close
The functions such as ring control, variable-structure control；Independent winding motor 30 uses the pole permanent magnet motor of 12 groove 10；Master controller 10 is according to control
Instruction and variable-structure control instruction control varistructure formula driver 20, and then control independent winding motor 30 to reach required work
Condition.
As shown in figure 4, topological structure of the present invention includes H bridges group 40, power switch group 50 and power supply group 60；The H bridges group
Power tube quantity and the number of phases of independent winding motor match in 40, when independent winding number of motor phases is 2 × N, wherein, N >=
2, the quantity of power tube 41 is 4 × 2 × N, is divided into 2 × N number of H bridges 42, each H bridges 42 include left and right two bridge arms 45, by institute
It is left and right as battery limit (BL) point using independent winding motor to state bridge arm 45, each bridge arm 45 includes upper and lower each power tube
41, each H bridges 42 share four power tubes 41, and the intermediate point of each bridge arm 45 is provided with a winding connection end
Son 43, the winding connection terminal 43 is connected with two terminals of the winding of independent winding motor respectively, in addition, each H
Bridge 42 is additionally provided with two power supply terminals 44, is connected respectively with the power switch for controlling the power supply group 60.
The power switch group 50 includes 2 × N number of power switch 51, and the power switch 51 by connecing power supply just and electricity respectively
The negative two power switch composition in source, and provided with the power power-supply binding post 52 for connecing the power supply group 60 and connect the H bridges 40
Power supply terminal 53, the power power-supply binding post 52 is connected with the dc power power supply of the power supply group 60, described
Power supply terminal 53 is connected with the power supply terminal 44 of the H bridges 42.
The power supply group 60 includes N number of dc power power supply 61, each dc power power supply 61 have output just with it is defeated
Go out minus two terminals, be connected respectively with the power power-supply binding post 52, and each dc power power supply 61 is simultaneously
Supply left and right two bridge arms 45, every phase winding of such independent winding motor is by a drive control of H bridges 42, together
When left and right both sides first bridge arm 45 and N+1 the bridge arm 45 also by the same dc power power supply 61
Power supply.
Power switch 51 is provided with the input being connected with controller 10, is additionally provided with the output being connected with subsequent power group 60
End, it is real respectively by signal isolation module and power driver module for the drive control data signal for exporting controller 10
Existing signal isolation and power drive enlarging function, export the control terminal to the power switch 51 in power switch group 50, so as to control
The conducting state of power switch 51 processed, to reach the break-make of control H bridges 42 and dc power power supply 61；
Controller 10, which is sent, drives topological variable-structure control to instruct to power switch 51, and power switch 51 is by the left side or the right side
Side H bridges 42 disconnect with dc power power supply 61, while send control instruction by above in H bridges 42 or following two power tube 41
In normally open, by below in H bridges 42 or both the above power tube 41 is in normally off, so in normally open
Two power tubes 41 are connected two windings so as to realize equivalent to wire, 2 of other same sides (left side or the right)
H bridges 42 also realize identical function, so as to which the 6 phase motors driven by 6 H bridges 42 to be connected into new 3 phase driven by 3 H bridges 42
Motor, i.e., it is the cascade of original two windings per phase winding, so as to realize the topological structure changes function of driving；
Signal isolation module is provided with the input being connected with controller 10, is additionally provided with what is be connected with subsequent power drive module
Output end, for the variable-structure control or drive control data signal for exporting controller 10, realize mutual with power signal
The function of isolation, protect controller 10 from the interference of power signal；
Power driver module is provided with the input being connected with signal isolation module, is additionally provided with and follow-up H bridges group 40 and power supply
The connected output end of switches set 50, the number signal for signal isolation module to be exported carry out power drive, realize power amplification
Function, to reach driving subsequent power pipe 41 and power switch 51；
Controller 10, which is provided with, receives the input that top level control device sends control instruction, and controls and become provided with output driving
The output end of structure control instruction, is connected with the input of signal isolation module.
In the present invention, controller 10 can select MCU, DSP, CPLD or FPGA, realize the resolving of control instruction, driving control
The function such as system and variable-structure control instruction generation；Photoelectric coupling or magnetic coupling device may be selected in signal isolation module, and power drives
The device with drive amplification function may be selected in dynamic model block；H bridges group 40 and power tube and power switch in power switch group 50
Power MOS pipe may be selected, break-make can be carried out according to drive control and variable-structure control instruction.
As shown in figure 5, power tube quantity and the number of phases of independent winding motor match in H bridges group 40, in independent winding electricity
When the machine number of phases is 6, wherein, N=3, the quantity of power tube 41 is 24, is divided into 6 H bridges.The each pair function phase of varistructure is same
Winding where H bridges, using a power power-supply, for example winding 1W1 and 2W1 can use a power power-supply to power, this
Sample can save the quantity of power power-supply.Each H bridges 42 include left and right two bridge arms 45, by bridge arm 45 with independent winding motor
Left and right for battery limit (BL) point, each bridge arm 45 includes upper and lower each power tube 41, and each H bridges 42 share four power tubes 41, often
The intermediate point of individual bridge arm 45 is provided with a winding connection terminal 43, the winding with independent winding motor respectively of winding connection terminal 43
Two terminals be connected, in addition, each H bridges 42 are additionally provided with two power supply terminals 44, respectively with controlling the electricity of power supply group 60
Source switch is connected；
Power switch group 50 includes 6 power switch 51, just born by connecing power supply respectively with power supply two of power switch 51
Power switch forms, and is provided with and connects the power power-supply binding post 52 of power supply group 60 and connect the power supply terminal 53 of H bridges 40, work(
Rate power supply terminal 52 is connected with the dc power power supply of power supply group 60, the power supply wiring of power supply terminal 53 and H bridges 42
Terminal 44 is connected；
Power supply group 60 includes 3 dc power power supplys 61, and each dc power power supply 61 has output minus two just with output
Terminal, it is connected respectively with power power-supply binding post 52, and each dc power power supply 61 supplies left and right two bridge arms simultaneously
45, every phase winding of such independent winding motor is by a drive control of H bridges 42, while first bridge arm 45 on left and right both sides
Also powered with the 4th bridge arm 45 by same dc power power supply 61.
When needing structure changes, such as power switch T7 and T10 can be disconnected, by power tube 1Q3,1Q2,4Q3 and 4Q2 institute
Bridge arm disconnected from power power-supply 1VS, while by power tube 1Q3 and 4Q3 close, power tube 1Q2 and 4Q2 is normally opened, this
Sample winding 1W1 right-hand member passes through normally opened power tube 1Q2 and 4Q2, is connected to winding 2W1 right-hand member, is so achieved that two
The series connection of winding, a new winding is formed, and new H bridges are formed to drive, so by power tube 1Q1,1Q4,4Q1 and 4Q4
It is achieved that structure changes function；Other phase windings are also similar handled.It is of course also possible to it is changed to 6 H bridges by 3 H bridgings
Driving, operating process are the inverse process of said process.
Winding 1W1-1W3 is functionally identical respectively with winding 2W1-2W3, and event occurs in some winding or power tube
After barrier, and doubled by the power tube Close All on that the H bridge to break down, and by function identical winding current to make up
The missing of failure phase, output torque held stationary is thereby may be ensured that, realize failure tolerant function.Event is occurring for the topological structure
During barrier, the number of phases or device of closing are minimum, thereby may be ensured that the more efficient of system.Moreover, the topological structure is also to power
Power supply, power tube and power switch etc. have failure tolerant ability.According to duty requirements, a half-H-bridge can be closed, it is light to realize
Carry mode of operation.When whole H bridges driving topological structure works, and it is operated under overload model, so as to realize heavy duty work
Pattern.
Referring to Fig. 6, fault diagnosis algorithm concretely comprises the following steps：
1) each phase current that the current sensor in current acquisition module gathers in real time, at the progress square of each phase current
Reason, and adjacent biphase current square make the difference and tries to achieve the mutual residual error of each phase current；
2) to it is normal when the mutual residual error of each phase current carry out norm calculation or mathematic expectaion calculates, establish normal each phase current
Norm value table or mathematical expectation table during mutual residual error；
3) the mutual residual error of each phase current obtained to step 1) carries out norm calculation or mathematic expectaion calculates, by right in real time
Residual norm value more mutual than each phase current or mathematical expectation with it is normal when each phase current mutual residual error when norm value or mathematics phase
Prestige value, judge fault type and the particular location to break down, and realize Fault Identification and isolation.
If the electric current number of phases is odd number in step 1), the specific formula for calculation of each phase current residual error is：
Wherein inFor n-th electric current, 1...n is the odd number electric current number of phases；
If the electric current number of phases is odd number, the specific formula for calculation of each phase current residual error is：
Wherein imFor m phase currents, 1...2m is the even number electric current number of phases.
It is according to the specific method that mathematical expectation judges fault type and position occurs in step 3)：
If the electric current number of phases is odd number,
If the electric current number of phases is even number,
Calculate the norm value of mutual residual error, failure judgement position and type, and similar judgement.
For Odd Phases winding electric machine, the fault diagnosis formula according to the norm value of mutual residual error is：
For even number phase winding motor, the fault diagnosis formula according to the norm value of mutual residual error is：
It is unrestricted to driver volume and weight while very high to the reliability requirement of electric system and driver
In the case of application scenario, using the first driver 20, each winding is driven by a H bridge, and control is very flexible, in the event of event
Barrier, can make up failure winding by the H bridge Close Alls where the winding by the current doubles of the winding function identical winding
Caused by power lack, the electric currents of other windings keeps constant, and device used in the faults-tolerant control being achieved in that is minimum, system utility
Highest.Furthermore, it is possible to ensure to realize multiple failure-work, it ensure that system has higher reliability and security.
Driver volume and weight is limited, at the same to the reliability requirement of electric system and driver is also higher should
In the case of occasion, using the second driver, topology is driven by conversion, can be by a star driving topology per N number of winding
Structure drives, and when one of winding or power tube break down, can close the star driving topology where the winding,
Topology work is driven by another star completely, current amplitude doubles, phase invariant, also achieves failure tolerant, but by
In the winding and power tube that close half, cause the power density of system relatively low, in this case, can only ensure and realize one
Secondary failure-work, it is impossible to break down again, otherwise system crash.
Such as the motor for 20KW, the first driver weight can not meet the weight demands of driver more than 10KG, then
Using the second driver.
With reference to shown in Fig. 9, the second driver can be according to the control instruction mapped structure of main control 10, by independent winding motor
30 winding type of drive is transformed to two star structures or multiple independent H-bridge structures, wherein during using independent H-bridge structure,
Algorithmically or electrically by the driving in series or in parallel of multiple windings 31 of independent winding motor 30, the second driver root
According to power drive order-driven independent winding motor 30；Second driver also includes power transistor driver 22_2 and switch driver
23_2, power transistor driver 22_2 and switch driver 23_2 input connect with programmable logic controller (PLC) 21_2 output end
Connect, (i.e. 2N winding drives power transistor driver 22_2 and switch driver 23_2 output end with power tube group 24_2 respectively
Unit) connected with power switch group 25_2 control terminal.
With reference to Fig. 7, the power switch group 2_50 includes multiple power switch 2_51, forms N-1 switch series unit
With an independent switch S0, switch series unit includes first switch 1Si, the second switch 2Si being sequentially connected in series and the 3rd switch
3Si, first switch 1Si one end are connected as the first separate end, the first switch 1Si other ends with second switch 2Si one end, even
Connect end and be used as the first common port, the second switch 2Si other end is connected with the 3rd switch 3Si one end, and connection end is as second
Common port, the 3rd switch 3Si other end is as the second separate end；The first common port connection i-th of i-th of switch series unit
Second end of+1 the first separate end for switching series unit and i+1 winding；The second of i-th of switch series unit is public
Second separate end of end connection i+1 switch series unit and the second end of the N+i+1 winding；The first of independent switch S0
First separate end of first switch series unit of end connection and the second end of the 1st winding, independent switch S0 the second end connects
Connect the second end of the 1st the second separate end for switching series unit and the N+1 winding；Wherein 1≤i≤N-1；
Winding driver element forms power transistor driver 23_2, and each winding driver element connects the first company of a winding
Connect end, there is provided coil-driven current；The winding driver element, including the first power tube and the second power tube, the first power tube
Source electrode connect the drain electrode of the second power tube, the drain electrode of the first power tube connects power end, the source ground of the second power tube,
The grid of first power tube and the second power tube as control terminal, the source electrode of the first power tube also with independent winding motor 30 one
The first end of individual winding is connected.
Referring to Fig. 8, in high speed operation, independent winding motor can be allowed to be operated in star structure, i.e., by opening power
Vertical setting of types power switch 2_51 on switches set 2_50 in "mouth" shape, i.e. power switch 1S1,3S1,1S2,3S2 are opened, horizontally-arranged
Power switch 2_51 is closed, i.e. power switch S0,2S1,2S2 is closed, and such winding has shorted on one end together, and by power
6 power tube 2_41 drivings on pipe group 2_40, form star driving topological structure, i.e. winding 1W1-1W3 and winding 2W1-2W3
Two star-like connections are formed respectively, and control is thus driven by three phase full bridge driving topology respectively equivalent to double three-phase machine
System.
Winding 1W1-1W3 is functionally identical respectively with winding 2W1-2W3, and event occurs in some winding or power tube
After barrier, and that three-phase windings Close All that will be broken down, it can be doubled by the other three winding current to make up failure phase
Missing, thereby may be ensured that output torque held stationary, realizes failure tolerant function.
In tick-over, two windings in series of independent winding motor can be allowed together and to be operated in independent H-bridge knot
Structure, i.e., by opening the horizontally-arranged power switch 2_51 on power switch group 2_50 in "mouth" shape, i.e. power switch S0,2S1,
2S2 open, vertical setting of types power switch 2_51 close, i.e. power switch 1S1,3S1,1S2,3S2 close, winding 1W1-1W3 respectively with
Winding 2W1-2W3 is together in series, and forms a new phase winding, and is driven by four power tube 2_41 on power tube group 2_40,
Form independent H-bridge driving topological structure.
The status command that logic controller is sent according to master controller exports the driving instruction of topological structure changes；Master controller
The status command of transmission includes star driving topological structure, H bridges driving topological structure；Star driving topological structure include underloading,
Heavily loaded, normal three kinds of operating modes；H bridges driving topological structure includes underloading, heavy duty, normal three kinds of operating modes.Sent when master controller
Status command is that star drives topological structure, and when being operated in light-load mode, in logic controller output driving power switch group
Power switch on square shape unit left side or in right edge, closes other power switch, as shown in Figure 8 open 1S1 and
1S2, or 3S1 and 3S2 is opened, and the opening time is shorter, for example, less than 30%；When the status command that master controller is sent is
Star drives topological structure, and when being operated in normal mode, square shape unit in logic controller output driving power switch group
Power switch on left side and in right edge, 1S1,1S2,3S1 and 3S2 are opened as shown in Figure 8, and the opening time is shorter, example
Such as it is 30%-60%；When the status command that master controller is sent drives topological structure for star, and is operated in heavily loaded pattern,
Power switch in logic controller output driving power switch group on square shape unit left side and in right edge, such as Fig. 8 institutes
Show and open 1S1,1S2,3S1 and 3S2, and the opening time is longer, for example, more than 70%.
Winding 1W1-1W3 is functionally identical respectively with winding 2W1-2W3, and event occurs in some winding or power tube
After barrier, and that three-phase windings Close All that will be broken down, it can be doubled by the other three winding current to make up failure phase
Missing, thereby may be ensured that output torque held stationary, realizes failure tolerant function.
When the status command that master controller is sent drives topological structure for H bridges, and is operated in light-load mode, logic control
Power switch in device output driving power switch group on square shape unit transverse side, closes vertical power switch, as shown in Figure 7
S0,2S1,2S2 are opened, and the opening time is shorter, for example, less than 30%；When the status command that master controller is sent drives for H bridges
When moving topological structure, and being operated in normal mode, square shape unit transverse side in logic controller output driving power switch group
On power switch, close vertical power switch, open S0,2S1 as shown in Figure 7,2S2, and the opening time is shorter, be, for example,
30%-60%；When the status command that master controller is sent drives topological structure for H bridges, and is operated in heavily loaded pattern, logic control
Power switch in device output driving power switch group processed on square shape unit transverse side, closes vertical power switch, such as Fig. 7 institutes
Show and open S0,2S1,2S2, and the opening time is shorter, for example, more than 70%；
When being operated in star driving topological structure, master controller performs fault diagnosis algorithm in real time, is diagnosed to be abort situation
And type, such as be diagnosed to be winding 1W1 and break down, star driving topological structure where closing winding 1W1, by another star
Shape driving topological structure power output doubles, and power caused by make up failure lacks, so as to realize faults-tolerant control.
H bridges driving topological structure is operated in, master controller performs fault diagnosis algorithm, is diagnosed to be abort situation and class in real time
Type, such as be diagnosed to be winding 1W1 or 2W1 and break down, can by power tube Close All on H bridges where 1W1 or 2W1, equivalent to
Winding is there occurs open fault, using existing method by remaining phase winding current amplitude and phase according to the electric current after faults-tolerant control
Amplitude and phase are driven control, so as to motor output torque after ensureing failure close to normal value, meet system to reach
The demand of operating mode.
The control instruction that master controller 10 is sent includes underloading H bridges driving topological structure, normal H bridges drive topological structure,
Heavily loaded H bridges driving topological structure, underloading star driving topological structure, normal star driving topological structure or the driving of heavily loaded star are opened up
Flutter structure；When control instruction is that underloading H bridges drive topological structure, an independent switch S0 and each switch Series Sheet are opened in control
Second switch in member, opening time are less than 30%, the first switch closed in each switch series unit and the 3rd switch；
When control instruction is that normal H bridges drive topological structure, control is opened in an independent switch S0 and each switch series unit
Second switch, opening time 30%-60%, the first switch closed in each switch series unit and the 3rd switch；Control
Instruct when driving topological structure for heavily loaded H bridges, second in independent switch S0 and each switch series unit is opened in control
Switch, opening time are more than 70%, the first switch closed in each switch series unit and the 3rd switch；Control instruction is
When underloading star drives topological structure, first switch or the 3rd switch in each switch series unit are opened in control, during unlatching
Between be less than 30%, the second switch closed in independent switch S0 and each switch series unit；Control instruction is normal
When star drives topological structure, first switch and the 3rd switch, opening time in each switch series unit of control unlatching are
30%-60%, the second switch closed in an independent switch S0 and each switch series unit；Control instruction is heavily loaded star
When driving topological structure, first switch and the 3rd switch in each switch series unit, opening time 70% are opened in control
More than, close an independent switch S0 and each second switch switched in series unit.
Master controller is found after the power tube failure in winding or winding driver element 24_2 being present, when driving topological structure
When driving topological structure for H bridges, the winding driver element and second switch or independent switch S0 of branch road where closing fault, and
Take and keep the constant strategy of magnetomotive force before and after failure, adjust the output current amplitude and phase of non-faulting branch road；
When it is that star drives topological structure to drive topological structure, the winding in star driving topology where closing fault
Driver element and first switch or the 3rd switch, the output current amplitude of adjustment non-faulting branch road double, phase invariant；Or
Star driving topological structure is changed to H bridges driving topological structure, and takes and keeps the constant strategy of magnetomotive force before and after failure, is adjusted
The output current amplitude and phase of whole non-faulting branch road, turn off the winding driver element and second switch of guilty culprit branch road
Or independent switch S0, the output current amplitude of adjustment non-faulting branch road double, phase invariant.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
According to the structure changes permanent magnet motor system of the present invention, different duty requirements can be met, compared to high-speed electric expreess locomotive+low speed
Motor+clutch configuration, motor driven systems weight and volume can be effectively reduced, and effectively improve power density and be
System efficiency, eliminates mechanical shock and noise.
It is described above, it is only the optimal embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (11)
1. a kind of structure changes electric system, it is characterised in that including master controller (10), the first driver (20), current acquisition
Module and independent winding motor (30)；
The electric current of each winding output of current acquisition module collection independent winding motor (30) is simultaneously transferred to master controller
(10)；
Independent winding motor (30) has 2N winding, N >=2；
First driver (20) includes power transistor driver (22), switch driver (23), power tube group (24) and power supply
Switches set (25)；
Power tube group (24) includes 4N H bridge arm (45), wherein there is 2N left bridge arm and 2N a right bridge arm；Each left H bridge arms
(45) the first left bridge arm power tube (Q1) and the second left bridge arm power tube (Q4), the source electrode connection of the first left bridge arm power tube are included
The drain electrode of second left bridge arm power tube；Each right H bridge arms (45) include the first right bridge arm power tube (Q3) and the second right bridge arm work(
Rate pipe (Q2), the source electrode of the first right bridge arm power tube connect the drain electrode of the second right bridge arm power tube；
Power switch group (25) includes power supply group (60) and 4N power switch (51)；Power supply group (60) includes N number of dc power
Power supply (61), each dc power power supply (61) have positive output terminal (i_Vs) and negative output terminal (i_PGND)；
Positive output terminal (i_Vs) i-th and the 2N+i power switch (51) of connection of i-th of dc power power supply (61)
First incoming end, i-th and N+i the first left bridge arm power tube of the second incoming end connection of i-th of power switch (51)
Drain electrode, the source electrode of i-th of first left bridge arm power tubes are connected with the first end of i-th of winding of independent winding motor (30), N
The source electrode of+i the first left bridge arm power tubes is connected with the first end of the N+i winding of independent winding motor (30)；I-th straight
Flow first access of N+i and the 3N+i power switch (51) of negative output terminal (i_PGND) connection of power power-supply (61)
End, the second incoming end of the N+i power switch (51) connect the source electrode of i-th and N+i the second left bridge arm power tube, the
Second incoming end of 3N+i power switch (51) connects the source electrode of i-th and N+i the second right bridge arm power tube；2N+i
The drain electrode of the second incoming end i-th and N+i the first right bridge arm power tube of connection of individual power switch (51), i-th first
The source electrode of right bridge arm power tube is connected with the second end of i-th of winding of independent winding motor (30), N+i the first right bridge arms
The source electrode of power tube is connected with the second end of the N+i winding of independent winding motor (30)；1≤i≤N-1；
The power transistor driver (22), first in the control command driving power pipe group (24) of master controller transmission are left
Bridge arm power tube, the second left bridge arm power tube, the first right bridge arm power tube and the second right bridge arm power tube；
4N power in the control command driving power switches set (25) that switch driver (23) is sent according to master controller is opened
Close (51)；
The master controller receives the electric current of each winding output, performs fault diagnosis algorithm, judges whether to break down, work as hair
During raw failure, abort situation and fault type are diagnosed to be, and fault recovery is realized by changing driving topological structure；Receive upper
The control command that machine is sent, and control command is transmitted to power transistor driver (22) and switch driver (23).
2. structure changes electric system according to claim 1, it is characterised in that first driver (20) is according to control
Order can form N number of H bridges driving topological structure or 2N H bridges driving topological structure；The driving topological structure of 2N H bridge is formed
Mode is：Open 4N power switch (51) and all the first left bridge arm power tube, the second left bridge arm power tube, the first right bridge
Arm power tube and the second right bridge arm power tube；The driving topological structure constituted mode of N number of H bridges is：Open i-th of first left bridge arms
Power tube, i-th of second left bridge arm power tubes, N+i the second left bridge arm power of the first left bridge arm power tube and N+i
Pipe；And the 1st to N and N+1 to 2N power switch (51) is opened, close 2N+1 to 3N and 3N+1 to 4N power switch
(51)；And i-th and N+i the first right bridge arm power tube is closed, opens i-th and N+i the second right bridge arm power
Pipe, or i-th and N+i the first right bridge arm power tube is opened, i-th and N+i the second right bridge arm power tube is closed,
Realize the series connection of i-th of winding and the N+i winding.
3. structure changes electric system according to claim 1, it is characterised in that first driver (20) is according to control
Order can form N number of H bridges driving topological structure or 2N H bridges driving topological structure；The driving topological structure of 2N H bridge is formed
Mode is：Open 4N power switch (51) and all the first left bridge arm power tube, the second left bridge arm power tube, the first right bridge
Arm power tube and the second right bridge arm power tube；The driving topological structure constituted mode of N number of H bridges is：Open i-th and N+i
Second right bridge arm power tube and i-th and N+i the first right bridge arm power tube；And close the 1st to N and N+1 to 2N
Power switch (51), open 2N+1 to 3N and 3N+1 to 4N power switch (51)；And close i-th and N+i
First left bridge arm power tube, i-th and N+i the second left bridge arm power tube is opened, or open i-th and N+i the
One left bridge arm power tube, i-th and N+i the second left bridge arm power tube is closed, realizes i-th of winding and the N+i winding
Series connection.
4. structure changes electric system according to claim 1, it is characterised in that
The master controller (10) includes the first control unit and the second control unit, first control unit and the second control
Unit is mutually redundant backup.
5. the structure changes electric system according to Claims 2 or 3, it is characterised in that real by changing driving topological structure
The mode of existing fault recovery is：When driving topological structure is that N number of H bridges drive topological structure, two of branch road where closing fault
The power switch (51) that the H bridge arms (45) of winding connection connect with two windings of branch road where closing fault；When driving topology
Structure is 2N H bridges driving topological structure, the H bridge arms (45) of winding connection on the branch road where closing fault.
6. structure changes electric system according to claim 5, it is characterised in that first driver (20) also included
Protection module and programmable logic controller (PLC) are flowed, programmable logic controller (PLC) receives the control command that master controller is sent and transmission
To H bridge arms (45) and power switch group (25)；The current acquisition module collection independent winding motor (30) exports per phase winding
Electric current be also transmitted to the overcurrent protection modules of the first driver (20), when the electric current of certain mutually some winding output exceedes setting electricity
When flowing threshold value, overcurrent protection module exports the over-current signal of the winding to programmable logic controller (PLC)；When driving topological structure
Topological structure is driven for N number of H bridges, where the H bridge arms (45) and closing fault of two windings connection of branch road where closing fault
The power switch (51) of two windings connection of branch road；When driving topological structure is that 2N H bridge drives topological structure, closing fault
The H bridge arms (45) that winding connects on the branch road at place.
7. structure changes electric system according to claim 6, it is characterised in that first driver (20) also included
Thermal protection module, temperature of the overtemperature protection module collection independent winding motor (30) per phase winding, when certain mutually some winding output
Temperature when exceeding design temperature threshold value, overtemperature protection module exports the heat alarm of the phase winding to Programmable logical controller
Device, when driving topological structure is that N number of H bridges drive topological structure, the H bridge arms that two windings of branch road where closing fault connect
(45) power switch (51) connected with two windings of branch road where closing fault；When driving topological structure is that 2N H bridge drives
Dynamic topological structure, the H bridge arms (45) of winding connection on the branch road where closing fault.
8. structure changes electric system according to claim 7, it is characterised in that the current threshold is winding rated output
2-5 times of current value；The temperature threshold is 150 °~200 °.
9. the structure changes electric system according to Claims 2 or 3, it is characterised in that：The control command that master controller is sent
Including forming N number of H bridges driving topological structure instruction, the instruction of composition H bridge parallel connections underloading driving topological structure, forming the parallel connection of H bridges just
Often driving topological structure instruction forms the heavy duty driving topological structure instruction in parallel of H bridges；Control command is composition H bridge parallel connection underloadings
When driving topological structure instruction, 4N power switch (51) is opened, opens the H bridge arms (45) that winding 1 to N both ends connect, or
Open the H bridge arms (45) that winding N+1 connects to 2N both ends；Control command instructs to form H bridge parallel connection drivens topological structure
When, 4N power switch (51) is opened, opens whole H bridge arms (45), the opening time of H bridge arms (45) is 30%-60%；Control
When ordering to form the parallel connection heavy duty driving topological structure instruction of H bridges, 4N power switch (51) is opened, opens whole H bridge arms
(45), the opening time of H bridge arms (45) is more than 70%.
10. structure changes electric system according to claim 1 or 2, it is characterised in that fault diagnosis algorithm specific steps
For：
1) current sensor gathers each phase current in real time, and each phase current is carried out into a square processing, and by adjacent biphase current square
Make the difference and try to achieve the mutual residual error of each phase current；
2) to it is normal when the mutual residual error of each phase current carry out norm calculation or mathematic expectaion calculates, it is mutual to establish normal each phase current
Residual norm value table or mathematical expectation table；
3) the mutual residual error of each phase current obtained to step 1) carries out norm calculation or mathematic expectaion calculates, each by real time contrast
The mutual residual norm value of phase current or mathematical expectation with it is normal when the mutual residual norm value of each phase current or mathematical expectation, sentence
Determine fault type and the particular location to break down, and realize Fault Identification and isolation；
It is according to the specific method that mathematical expectation judges fault type and position occurs：
If the electric current number of phases is odd number,
If the electric current number of phases is even number,
It is according to the specific method that norm value judges fault type and position occurs：
If the electric current number of phases is odd number,
If the electric current number of phases is even number,
11. structure changes electric system according to claim 9, it is characterised in that master controller (10) finds winding be present
Or after the power tube failure in power tube group (24), topological structure is driven if N number of H bridges, the two of branch road where closing fault
The power switch (51) that the H bridge arms (45) of individual winding connection connect with two windings of branch road where closing fault, and take guarantor
The constant strategy of magnetomotive force before and after failure is held, adjusts the output current amplitude and phase of non-faulting phase；If H bridge parallel connection underloadings
Drive topological structure, the H bridge arms (45) of winding connection on the branch road where closing fault, open in another group with the winding function
The H bridge arms (45) of identical winding connection, or whole group power tube is closed, open another set H bridge parallel connections underloading driving topology
Structure；If H bridge parallel connection driven topological structures, the H bridge arms (45) of winding connection, are adjusted on the branch road where closing fault
The whole output current amplitude with failure phase function identical non-faulting phase doubles, phase invariant；If the heavy duty driving in parallel of H bridges
Topological structure, the H bridge arms (45) of winding connection, adjustment and failure phase function identical non-faulting on the branch road where closing fault
The output current amplitude of phase doubles, phase invariant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981655.6A CN105391366B (en) | 2015-12-23 | 2015-12-23 | A kind of structure changes electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510981655.6A CN105391366B (en) | 2015-12-23 | 2015-12-23 | A kind of structure changes electric system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105391366A CN105391366A (en) | 2016-03-09 |
| CN105391366B true CN105391366B (en) | 2018-04-10 |
Family
ID=55423269
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510981655.6A Active CN105391366B (en) | 2015-12-23 | 2015-12-23 | A kind of structure changes electric system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105391366B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113300660A (en) * | 2021-06-16 | 2021-08-24 | 国华(青岛)智能装备有限公司 | Multifunctional motor control circuit and control method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125568A (en) * | 1998-10-16 | 2000-04-28 | Mitsubishi Heavy Ind Ltd | Inverter power supply device |
| CN103457503A (en) * | 2013-09-16 | 2013-12-18 | 清华大学 | Reconfigurable fault-tolerant type driving topological structure of redundant power source |
| 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 |
| CN104617847A (en) * | 2015-02-26 | 2015-05-13 | 北京精密机电控制设备研究所 | Fault-tolerant electro-mechanical actuating system |
-
2015
- 2015-12-23 CN CN201510981655.6A patent/CN105391366B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125568A (en) * | 1998-10-16 | 2000-04-28 | Mitsubishi Heavy Ind Ltd | Inverter power supply device |
| CN103457503A (en) * | 2013-09-16 | 2013-12-18 | 清华大学 | Reconfigurable fault-tolerant type driving topological structure of redundant power source |
| 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 |
| CN104617847A (en) * | 2015-02-26 | 2015-05-13 | 北京精密机电控制设备研究所 | Fault-tolerant electro-mechanical actuating system |
Non-Patent Citations (1)
| Title |
|---|
| 四相永磁容错电机短路故障容错策略;司宾强等;《控制与决策》;20140831;第29卷(第8期);第1489-1494页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105391366A (en) | 2016-03-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106470008B (en) | Double winding fault tolerant permanent magnet power drive system based on three-phase four-arm and control method | |
| CN206135760U (en) | Fault -tolerant power drive system of duplex winding permanent magnetism based on three -phase four -leg | |
| CN106154103B (en) | The switching tube open-circuit fault diagnostic method of three-level inverter | |
| CN102594243B (en) | Indirect matrix converter multi-machine transmission system and fault-tolerant operation control method thereof | |
| CN105958892B (en) | Four phase electric excitation biconvex electrode electric machine converter Fault-Tolerant Topology structures and fault-tolerance approach | |
| CN106712601A (en) | Copper consumption minimization-based axial magnetic field flux-switching fault-tolerant motor fault-tolerant control method | |
| CN108418196B (en) | Electric current transfevent fault current limiter control method suitable for flexible direct current power grid | |
| CN105207439B (en) | It is a kind of that there is the switched reluctance motor system and its method for diagnosing faults of fault tolerance based on splitting phase tap | |
| CN101667805A (en) | Six-phase permanent magnet fault-tolerant motor control system | |
| CN101272125A (en) | Motor drive system with fault tolerance function | |
| CN101667804A (en) | Multiphase permanent magnet fault-tolerant motor control system in half-bridge structure | |
| CN105610281B (en) | Open winding structure changes electric system | |
| CN112636459A (en) | Unmanned aerial vehicle intelligence power supply and distribution system | |
| CN109314393A (en) | Modular multi-level converter unit with integrated current sensors | |
| CN108809173B (en) | Common-bus open-winding brushless doubly-fed wind generator system fault-tolerant control method | |
| CN108039837A (en) | A kind of double permanent magnet synchronous motor Fault tolerant inverters and its control method | |
| CN104617827A (en) | Method for controlling fault tolerance of axial magnetic field flux-switching permanent motor of electric vehicle | |
| CN105896490A (en) | Fault processing method and device of power distribution network | |
| CN106227099A (en) | A kind of cooperative control system of double winding permagnetic synchronous motor | |
| CN105391366B (en) | A kind of structure changes electric system | |
| CN109687569A (en) | Data center's power supply system | |
| CN206323316U (en) | A kind of synchronous electric motor rotor field circuit with fault-tolerant operation | |
| CN105610280B (en) | A kind of open winding structure changes electric system | |
| CN109812258A (en) | A kind of control system of rig and its control method | |
| CN104767462B (en) | Motor driver with fault tolerance |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |