CN105471349A - Variable structure motor system - Google Patents
Variable structure motor system Download PDFInfo
- Publication number
- CN105471349A CN105471349A CN201510980697.8A CN201510980697A CN105471349A CN 105471349 A CN105471349 A CN 105471349A CN 201510980697 A CN201510980697 A CN 201510980697A CN 105471349 A CN105471349 A CN 105471349A
- Authority
- CN
- China
- Prior art keywords
- switch
- winding
- topological structure
- series unit
- independent
- 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.)
- Granted
Links
Landscapes
- Control Of Ac Motors In General (AREA)
Abstract
The present invention relates to a variable structure motor system. The system comprises a main controller, a driver and an open winding motor. The main controller receives a control instruction and feedback information of the open winding motor, and generates a power driving instruction and a system structure change instruction; and according to the system structure change instruction, the driver performs transformation on a winding topology structure of the open winding motor and a driving topology structure electrically or in algorithm, so that the use of multiple windings connected in series or in parallel is achieved, and the requirements of a plurality of operating conditions such as normal operation, failure and overload operation of the motor system are met. Compared with a multi-motor and clutch mechanical variable structure, the system has the characteristics that the weight and volume of an electromechanical energy conversion system can be effectively reduced, and the power density, the reliability, the security and the efficiency are effectively improved; and at the same time, a clutch is removed mechanically, thereby radically eliminating mechanical vibrations and noises.
Description
Technical field
The present invention relates to a kind of structure changes electric system, belong to machine field.
Background technology
In order to improve reliability, the performance index such as fail safe and efficiency of system, general more to the condition of work restriction ratio of system, it can only be allowed to be operated in certain operating mode, system high-performance multi-state operation demand can not be met, more the extreme operating condition such as opinion overload and hypervelocity, does not so just limit systematic difference scope.It is the conflict often run at work that the performance index such as reliability, fail safe and high efficiency and high-performance multi-state run, in order to dissolve this contradiction, system can either be run by multi-state, there is higher reliability, fail safe and efficiency simultaneously, the coefficient of safety that usual employing is higher and design capacity, the way of output of even multiple mechanisms in series or parallel connection.Such as, at motor and system regions thereof, usually adopt the mechanical structure changes mode of many motor+clutches, according to different duty requirements, switch corresponding motor and carry out work.
Simultaneously; that produces along with modern industry greatly develops; heavy-duty motor system application scenario constantly expands; such as develop now full electric car, electric tank, complete electric naval vessel etc. out; electric system is as the crucial actuating unit of said system and propulsive power source; its duty requirements often more complicated and often changeable, such as often can run into the operating modes such as high speed, low speed, underloading, overload, normal and fault, this can convert according to different operating modes with regard to needing electric system.The way of output of above-mentioned multiple mechanisms in series or parallel connection to a certain degree can meet system multi-state demand.But the shortcoming of the program is also clearly, its exist take up room large with weight greatly, system power-density and efficiency is low, mechanical shock and the shortcoming such as noise is large, mechanical wear is large.In addition in the occasion that blower and water pump etc. is not high to performance requirement, although the pole changing method of AC Electrical Machine Winding can provide the speed of certain limit to regulate, but speed adjustable range is little, poor performance, reliability are not high, can not adapt to the application scenario of high-performance, wide range speed control, multi-state, high reliability.
Electric system is as the key subsystem of electromechanical energy conversion systems, and its performance determines and affects the performance of electromechanical energy conversion systems.How fundamentally solving above-mentioned contradiction, can either meet multi-state demand to allow electric system is this area technical problem urgently to be resolved hurrily.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, structure changes electric system is provided, comprise master controller, driver and open winding electric machine, wherein, master controller receives the feedback information of control command and open winding electric machine, and generating power drives and the instruction of system structure changes, driver according to the instruction of system structure changes algorithmically or electrically above the winding topology structure of open winding electric machine and driving topological structure to be converted, realize the series connection of multiple winding or use in parallel, the normal of electric system is met to reach, fault, overload, the multi-state demands such as overspeed.
The object of the invention is achieved by following technical solution:
A kind of structure changes electric system is provided, comprises master controller, driver, current acquisition module and open winding electric machine;
Open winding electric machine has 2N winding, N >=2;
The electric current that each winding of the open winding electric machine of described current acquisition module acquires exports also is transferred to master controller;
Described master controller receives the electric current that each winding exports, and performs fault diagnosis algorithm, judges whether to break down, and when a failure occurs it, diagnoses be out of order position and fault type, and drives topological structure to realize fault recovery by changing; Receive the control command that host computer sends, and control command is sent to power transistor driver and switch driver;
Described driver comprises driver element controller, switch driver, power switch group and 2N winding driver element;
Each winding driver element connects the first link of a winding, provides coil-driven current;
Described power switch group comprises multiple power switch, form N-1 switch series unit and an independent switch, switch series unit comprises the first switch, second switch and the 3rd switch of connecting successively, one end of first switch is as the first independent end, the first switch other end is connected with second switch one end, and link is as the first common port, and the other end of second switch is connected with one end of the 3rd switch, link is as the second common port, and the other end of the 3rd switch is as the second independent end; First common port of i-th switch series unit connects the first independent end of the i-th+1 switch series unit and the second end of the i-th+1 winding; Second common port of i-th switch series unit connects the second independent end of the i-th+1 switch series unit and the second end of N+i+1 winding; The first end of independent switch connects the first independent end of first switch series unit and the second end of the 1st winding, and the second end of independent switch connects the second independent end of the 1st switch series unit and the second end of N+1 winding; Wherein 1≤i≤N-1;
Whether driver element controller, provide coil-driven current according to control command control 2N winding driver element;
Switch driver is according to the power switch conducting in control command control power switch group or shutoff.
Preferably, described winding driver element, comprise the first power tube and the second power tube, the source electrode of the first power tube connects 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 the first power tube and the second power tube is as control end, and the source electrode of the first power tube is also connected with the first end of a winding of open winding electric machine.
Preferably, described driver also comprises programmable logic controller (PLC), and programmable logic controller (PLC) receives the control command of master controller transmission and sends to power transistor driver and switch driver.
Preferably, described power switch group, according to control command, can form H bridge and drive topological structure, star driving topological structure; The method forming H bridge driving topological structure is: open the second switch in an independent switch and each switch series unit, close the first switch in each switch series unit and the 3rd switch; The method forming star driving topological structure is: open the first switch in each switch series unit and/or the 3rd switch, close the second switch in an independent switch and each switch series unit.
Preferably, by changing the method driving topological structure to realize fault recovery be: when being H bridge driving topological structure when driving topological structure, the power tube group of closing fault place branch road and winding driver element; When being star driving topological structure when driving topological structure, power tube group in the star driving topology at closing fault place and winding driver element, or star driven topological structure to change to H bridge and drive topological structure, and the power tube group of closing fault place branch road and winding driver element.
Preferably, the control command that master controller sends comprises underloading H bridge and drives topological structure, normally H bridge driving topological structure, heavily loaded H bridge driving topological structure, underloading star to drive topological structure, normal star driving topological structure or heavily loaded star driving topological structure; When control command is underloading H bridge driving topological structure, control the second switch in unlatching independent switch and each switch series unit, the opening time is less than 30%, closes the first switch in each switch series unit and the 3rd switch; When control command is normal H bridge driving topological structure, control the second switch in unlatching independent switch and each switch series unit, the opening time is 30%-60%, closes the first switch in each switch series unit and the 3rd switch; When control command is heavily loaded H bridge driving topological structure, control the second switch in unlatching independent switch and each switch series unit, the opening time is more than 70%, closes the first switch in each switch series unit and the 3rd switch; When control command is underloading star driving topological structure, control to open the first switch in each switch series unit or the 3rd switch, the opening time is less than 30%, closes the second switch in an independent switch and each switch series unit; When control command is normal star driving topological structure, control to open the first switch in each switch series unit and the 3rd switch, the opening time is 30%-60%, closes the second switch in an independent switch and each switch series unit; When control command is heavily loaded star driving topological structure, control to open the first switch in each switch series unit and the 3rd switch, the opening time is more than 70%, closes the second switch in an independent switch and each switch series unit.
Preferably, fault diagnosis algorithm concrete steps are:
1) each phase current of current sensor Real-time Collection, to carry out square process by each phase current, and adjacent biphase current square is carried out do difference and try to achieve the mutual residual error of each phase current;
2) carry out norm calculation or mathematic expectaion to the mutual residual error of phase current each time normal to calculate, norm value table or mathematical expectation table when setting up normal each phase current mutual residual error;
3) to step 1) the mutual residual error of each phase current that obtains carries out norm calculation or mathematic expectaion calculates, by each phase current of real time contrast mutual residual norm value or mathematical expectation and normal time each phase current mutual residual error time norm value or mathematical expectation, the particular location judging fault type and break down, and realize Fault Identification and isolation.
Preferably, according to mathematical expectation judge the concrete grammar of fault type and occurrence positions as:
If the electric current number of phases is odd number,
If the electric current number of phases is even number,
Preferably, after master controller finds to there is the power tube fault in winding or power tube group, when being H bridge driving topological structure when driving topological structure, the winding driver element of closing fault place branch road and second switch or independent switch, and take to keep the strategy that before and after fault, magnetomotive force is constant, the output current amplitude of adjustment non-faulting branch road and phase place;
When drive topological structure be star drive topological structure time, the star at closing fault place drives winding driver element in topology and the first switch or the 3rd switch, and the output current amplitude of adjustment non-faulting branch road doubles, phase invariant; Or star driven topological structure to change to H bridge and drive topological structure, and take to keep the strategy that before and after fault, magnetomotive force is constant, the output current amplitude of adjustment non-faulting branch road and phase place, the winding driver element of closing fault place branch road and second switch or independent switch again, the output current amplitude of adjustment non-faulting branch road doubles, phase invariant.
The present invention compared with prior art tool has the following advantages:
(1) structure changes electric system of the present invention, combined by the different break-makes of a set of power tube group and power switch group, adopt a set of motor can realize the function of multiple motor, by converting, different duty requirements can be met, compare many motors+clutch mechanism formula structure changes, can effectively reduce motor driven systems weight and volume, and effectively improve power density, reliability, fail safe and system effectiveness, mechanically eliminate clutch simultaneously, thus fundamentally eliminate mechanical shock and noise;
(2) the present invention arranges underloading H bridge and drives topological structure, normally H bridge driving topological structure, heavily loaded H bridge driving topological structure, underloading star driving topological structure, normal star driving topological structure or heavily loaded star driving topological structure, totally six kinds drive topological operating state, can meet various working demand; When a certain phase winding breaks down, other mode of operations can be switched to, improve service efficiency and the power density of system.
(3) electric system of the present invention can realize the failure diagnosis of self winding, and can carry out troubleshooting, does not affect the safe handling of follow-up equipment.
(4) the present invention can by the switching of different driving topology, and realize On-line Fault process, the economic loss that the system complete failure of avoiding causes, the troubleshooting for electric system provides brand-new solution.Impart the self-repairing capability of electric system in adverse circumstances, be particularly useful for the application scenario that Aeronautics and Astronautics, navigation, nuclear power etc. are higher to security requirement.
Accompanying drawing explanation
Fig. 1 is the structural representation of structure changes electric system of the present invention;
Fig. 2 is the structural representation of driver of the present invention;
Fig. 3 is open winding electric machine structure chart of the present invention;
Fig. 4 is the Organization Chart that 2 × N phase varistructure formula of the present invention drives topological structure;
Fig. 5 is the Organization Chart that six phase varistructure formulas of the present invention drive topological structure;
Fig. 6 is fault diagnosis algorithm schematic diagram of the present invention.
Embodiment
As shown in Figure 1, with the main Solid rocket engine on naval vessel, the structure changes electric system that the present invention proposes is described.In the present invention, structure changes electric system comprises master controller 1, driver 2, current acquisition module and open winding electric machine 3, wherein, described master controller 1 receives the feedback information of PC control instruction and open winding electric machine 3, and generating power drives and drives topological structure changes instruction, described driver 2 according to the instruction of system structure changes algorithmically or electrically above the winding topology structure of described open winding electric machine 3 and driving topological structure to be converted, realize the series connection of multiple winding or use in parallel, the normal of electric system is met to reach, fault, overload, the multi-state demands such as overspeed.
Particularly, open winding electric machine 3 comprises 2N winding 31, wherein, N >=2, for 12 groove motors as shown in Figure 3, two terminals of winding 31 are all drawn outside motor casing, each winding is by isolating tooth 32 separately, according to different winding topology structural designs, two or three windings algorithmically or electrically upper can taking are connected or parallel way, become a new phase after winding topology Structural Transformation.
Master controller 10 major function comprises: receive higher level's control system (such as naval vessel central control system) send control command, demodulation motor rotor position, receive each phase current, drive topological structure conversion; Master controller 10 is according to control command with when front wheel driving topological structure carries out drived control to open winding electric machine 30, and the control command of subsequent driver 20 is exported in adjustment in real time; Master controller 10 is according to the electric current gathered; perform fault diagnosis algorithm; judge whether to break down; when a failure occurs it; diagnose be out of order position and fault type, and drive topological structure to realize fault recovery by changing, carry out closed-loop control simultaneously; subsequent driver 2 is protected, makes motor be in safe work state.
Shown in composition graphs 2, driver 2 mainly comprises logic controller 10, power transistor driver 20, switch driver 30, power tube group 40, power switch group 50 (i.e. 2N winding driver element); Logic controller 10 has the input be connected with master controller 1, and controls the output of power tube group 40 and power switch group 50; The varistructure that power tube group 40 and power switch group 50 are formed drives topological output, equal with the terminals subnumber of the winding 31 of open winding electric machine 3, and corresponding connection; Driver 2 can according to the control command mapped structure of master control 1, the winding type of drive of open winding electric machine 3 is transformed to multiple star structure or independent H-bridge structure, when wherein adopting independent H-bridge structure, algorithmically or electrically, multiple windings 31 of open winding electric machine 3 are connected or are together in parallel driving, driver 2 is according to the open winding electric machine 3 of power drive order-driven; Driver 2 also comprises power transistor driver 20 and switch driver 30, power transistor driver 20 is connected with the output of programmable logic controller (PLC) 10 with the input of switch driver 30, and power transistor driver 20 is connected with the control end of power tube group 40 and power switch group 50 respectively with the output of switch driver 30.
Composition graphs 3, described power switch group 50 comprises multiple power switch 51, form N-1 switch series unit and an independent switch T0, switch series unit comprises the first switch 1Ti, the second switch 2Ti and the 3rd switch 3Ti that connect successively, one end of first switch is as the first independent end 52, the first switch other end is connected with second switch one end, link is as the first common port, the other end of second switch is connected with one end of the 3rd switch, link is as the second common port, and the other end of the 3rd switch is as the second independent end; First common port of i-th switch series unit connects the first independent end of the i-th+1 switch series unit and the second end of the i-th+1 winding; Second common port of i-th switch series unit connects the second independent end of the i-th+1 switch series unit and the second end of N+i+1 winding; The first end of independent switch T0 connects the first independent end of first switch series unit and the second end of the 1st winding, and second end of independent switch T0 connects the second independent end of the 1st switch series unit and the second end of N+1 winding; Wherein 1≤i≤N-1;
Winding driver element forms power transistor driver 30, and each winding driver element connects the first link of a winding, provides coil-driven current; Described winding driver element, comprise the first power tube and the second power tube, the source electrode of the first power tube connects 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 the first power tube and the second power tube is as control end, and the source electrode of the first power tube is also connected with the first end of a winding of open winding electric machine 3.
In the present invention, master controller 10 can be formed based on DSP or ARM microprocessor, realizes the functions such as the resolving of control command, closed-loop control, variable-structure control; Open winding electric machine 3 adopts 12 groove motors; Master controller 1 according to control command and variable-structure control instruction control and drive system 2, and then controls open winding electric machine 3 and reaches required operating mode.
As shown in Figure 5, in power tube group 40, the number of phases of power tube quantity and open winding electric machine matches, when the open winding electric machine number of phases is 6, wherein, N=3, power tube 41 quantity is 12, be divided into 6 brachium pontis 42, each brachium pontis 42 comprises upper and lower two power tubes 41, and the intermediate point of each brachium pontis 42 is provided with binding post 43, and described binding post 43 is connected with a terminal of the winding of open winding electric machine respectively;
Power switch group 50 comprises 7 power switchs, 51,7 power switchs 51 and connects into multiple " mouth " word string connection shape, and is provided with 6 binding posts 52, and binding post 52 is connected with the another one terminal of the winding of open winding electric machine.
Power switch group 50, according to variable-structure control instruction, can be out of shape, namely by controlling opening or closing of power switch 51.
See Fig. 5, when high speed operation, open winding electric machine can be allowed to be operated in star structure, namely by opening the vertical setting of types power switch 51 in power switch group 50 in "mouth" shape, i.e. power switch 1T1, 1T2, 3T1, 3T2 opens, horizontally-arranged power switch 51 is closed, i.e. power switch T0, 2T1, 2T2 closes, such winding has shorted on one end together, and driven by the power tube of 6 in power tube group 40 41, form star and drive topological structure, namely winding 1W1-1W3 and winding 2W1-2W3 form two respectively and to be star-likely connected, so just being equivalent to double three-phase machine drives topology to carry out drived control by three phase full bridge respectively.
Winding 1W1-1W3 respectively with winding 2W1-2W3, functionally identical, after certain winding or power tube break down, and that three-phase windings Close All that will break down, the disappearance making up fault phase can be doubled by other three winding currents, thus Driving Torque held stationary can be ensured, realize failure tolerant function.
When tick-over, can allow two of open winding electric machine windings in series together and be operated in independent H-bridge structure, namely by opening the horizontally-arranged power switch 51 in power switch group 50 in "mouth" shape, namely power switch T0,2T1,2T2 opens, vertical setting of types power switch 51 is closed, namely power switch 1T1,3T1,1T2,3T2 closes, winding 1W1-1W3 is together in series with winding 2W1-2W3 respectively, form a new phase winding, and driven by the power tube of four in power tube group 40 41, form independent H-bridge and drive topological structure.
Logic controller exports the driving instruction of topological structure changes according to the status command that master controller sends; The status command that master controller sends comprises star and drives topological structure, H bridge to drive topological structure; Star drives topological structure to comprise underloading, heavy duty, normal three kinds of operating modes; H bridge drives topological structure to comprise underloading, heavy duty, normal three kinds of operating modes.The status command sent when master controller is that star drives topological structure, and when being operated in light-load mode, logic controller exports the power switch in driving power switches set on the left of square shape unit on limit or in right edge, close other power switchs, open 1T1 and 1T2 as shown in Figure 5, or open 3T1 and 3T2, and the opening time is shorter, such as, be less than 30%; The status command sent when master controller is that star drives topological structure, and when being operated in normal mode, logic controller exports the power switch in driving power switches set on the left of square shape unit on limit and in right edge, open 1T1,1T2,3T1 and 3T2 as shown in Figure 5, and the opening time is shorter, such as, be 30%-60%; The status command sent when master controller is that star drives topological structure, and when being operated in heavily loaded pattern, logic controller exports the power switch in driving power switches set on the left of square shape unit on limit and in right edge, open 1T1,1T2,3T1 and 3T2 as shown in Figure 5, and the opening time is longer, such as, be more than 70%.
Winding 1W1-1W3 respectively with winding 2W1-2W3, functionally identical, after certain winding or power tube break down, and that three-phase windings Close All that will break down, the disappearance making up fault phase can be doubled by other three winding currents, thus Driving Torque held stationary can be ensured, realize failure tolerant function.
The status command sent when master controller is that H bridge drives topological structure, and when being operated in light-load mode, logic controller exports the power switch in driving power switches set on square shape unit transverse limit, close vertical power switch, open T0,2T1 as shown in Figure 5,2T2, and the opening time is shorter, such as, be less than 30%; The status command sent when master controller is that H bridge drives topological structure, and when being operated in normal mode, logic controller exports the power switch in driving power switches set on square shape unit transverse limit, close vertical power switch, open T0,2T1 as shown in Figure 5,2T2, and the opening time is shorter, such as, be 30%-60%; The status command sent when master controller is that H bridge drives topological structure, and when being operated in heavily loaded pattern, logic controller exports the power switch in driving power switches set on square shape unit transverse limit, close vertical power switch, open T0,2T1 as shown in Figure 5,2T2, and the opening time is shorter, such as, be more than 70%;
When being operated in star driving topological structure, master controller performs fault diagnosis algorithm in real time, diagnose be out of order position and type, winding 1W1 is such as diagnosed out to break down, close winding 1W1 place star and drive topological structure, drive topological structure power output to double by another one star, to make up the power disappearance that fault causes, thus can faults-tolerant control be realized.
Be operated in H bridge and drive topological structure, master controller performs fault diagnosis algorithm in real time, diagnose be out of order position and type, winding 1W1 or 2W1 is such as diagnosed out to break down, can by power tube Close All on the H bridge of 1W1 or 2W1 place, be equivalent to winding and there occurs open fault, adopt existing method that residue phase winding current amplitude and phase place are carried out drived control according to the current amplitude after faults-tolerant control and phase place, thus can ensure that fault rear motor Driving Torque is close to normal value, to reach the demand meeting system condition.
See Fig. 6, fault diagnosis algorithm concrete steps are:
1) each phase current of the current sensor Real-time Collection in current acquisition module, to carry out square process by each phase current, and adjacent biphase current square is carried out do difference and try to achieve the mutual residual error of each phase current;
2) carry out norm calculation or mathematic expectaion to the mutual residual error of phase current each time normal to calculate, norm value table or mathematical expectation table when setting up normal each phase current mutual residual error;
3) to step 1) the mutual residual error of each phase current that obtains carries out norm calculation or mathematic expectaion calculates, by each phase current of real time contrast mutual residual norm value or mathematical expectation and normal time each phase current mutual residual error time norm value or mathematical expectation, the particular location judging fault type and break down, and realize Fault Identification and isolation.
Step 1) if in the electric current number of phases be odd number, the specific formula for calculation of each phase current residual error is:
If the electric current number of phases is odd number, the specific formula for calculation of each phase current residual error is:
Step 3) according to mathematical expectation judge the concrete grammar of fault type and occurrence positions as:
If the electric current number of phases is odd number,
If the electric current number of phases is even number,
Calculating the norm value of mutual residual error, failure judgement position and type, is also similar judgement.
According to structure changes electric system of the present invention, by in control algolithm or the enterprising line translation of electrical structure, different duty requirements can be met, compare many motors+clutch mechanism formula structure changes, can effectively reduce motor driven systems weight and volume, and can effectively improve power density, reliability, fail safe and system effectiveness, mechanically eliminate clutch simultaneously, thus fundamentally eliminate mechanical shock and noise.
The above; be only the embodiment of the best of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; the change that can expect easily or replacement, all should be encompassed within protection scope of the present invention.
The content be not described in detail in specification of the present invention belongs to the known technology of professional and technical personnel in the field.
Claims (9)
1. a structure changes electric system, is characterized in that, comprises master controller (1), driver (2), current acquisition module and open winding electric machine (3);
Open winding electric machine (3) has 2N winding, N >=2;
The electric current that each winding of the open winding electric machine of described current acquisition module acquires (3) exports also is transferred to master controller;
Described master controller receives the electric current that each winding exports, and performs fault diagnosis algorithm, judges whether to break down, and when a failure occurs it, diagnoses be out of order position and fault type, and drives topological structure to realize fault recovery by changing; Receive the control command that host computer sends, and control command is sent to power transistor driver (20) and switch driver (30);
Described driver (2) comprises driver element controller (20), switch driver (30), power switch group (50) and 2N winding driver element;
Each winding driver element connects the first link of a winding, provides coil-driven current;
Described power switch group (50) comprises multiple power switch (51), form N-1 switch series unit and an independent switch (T0), switch series unit comprises first switch (1Ti) of connecting successively, second switch (2Ti) and the 3rd switch (3Ti), one end of first switch (1Ti) is as the first independent end, first switch (1Ti) other end is connected with second switch (2Ti) one end, link is as the first common port, the other end of second switch (2Ti) is connected with one end of the 3rd switch (3Ti), link is as the second public affairs (2Ti) end altogether, the other end of the 3rd switch (3Ti) is as the second independent end, first common port of i-th switch series unit connects the first independent end of the i-th+1 switch series unit and the second end of the i-th+1 winding, second common port of i-th switch series unit connects the second independent end of the i-th+1 switch series unit and the second end of N+i+1 winding, the first end of independent switch (T0) connects the first independent end of first switch series unit and the second end of the 1st winding, and the second end of independent switch (T0) connects the second independent end of the 1st switch series unit and the second end of N+1 winding, wherein 1≤i≤N-1,
Whether driver element controller (20), provide coil-driven current according to control command control 2N winding driver element;
Switch driver (30) is according to power switch (51) conducting in control command control power switch group (50) or shutoff.
2. structure changes electric system according to claim 1, it is characterized in that, described winding driver element, comprise the first power tube and the second power tube, the source electrode of the first power tube connects the drain electrode of the second power tube, and the drain electrode of the first power tube connects power end, the source ground of the second power tube, the grid of the first power tube and the second power tube is as control end, and the source electrode of the first power tube is also connected with the first end of a winding of open winding electric machine (3).
3. structure changes electric system according to claim 1 and 2, it is characterized in that, described driver (20) also comprises programmable logic controller (PLC), and the control command that programmable logic controller (PLC) reception master controller (1) sends also sends to power transistor driver (20) and switch driver (30).
4. structure changes electric system according to claim 1 and 2, is characterized in that, described power switch group (50), according to control command, can form H bridge and drive topological structure, star driving topological structure; The method forming H bridge driving topological structure is: open the second switch in an independent switch (T0) and each switch series unit, close the first switch in each switch series unit and the 3rd switch; The method forming star driving topological structure is: open the first switch in each switch series unit and/or the 3rd switch, close the second switch in an independent switch (T0) and each switch series unit.
5. structure changes electric system according to claim 4, it is characterized in that, by changing the method driving topological structure to realize fault recovery be: when drive topological structure be H bridge drive topological structure time, the winding driver element of closing fault place branch road and second switch or independent switch (T0); When being star driving topological structure when driving topological structure, the star at closing fault place drives winding driver element in topology and the first switch or the 3rd switch, or star driven topological structure to change to H bridge and drive topological structure, and the winding driver element of closing fault place branch road and second switch or independent switch (T0).
6. structure changes electric system according to claim 1 and 2, it is characterized in that, the control command that master controller (1) sends comprises underloading H bridge and drives topological structure, normally H bridge to drive topological structure, heavily loaded H bridge to drive topological structure, underloading star driving topological structure, normal star driving topological structure or heavily loaded star to drive topological structure; When control command is underloading H bridge driving topological structure, control the second switch (2Ti) in unlatching independent switch (T0) and each switch series unit, opening time is less than 30%, closes the first switch (1Ti) in each switch series unit and the 3rd switch (3Ti); When control command is normal H bridge driving topological structure, control the second switch (2Ti) in unlatching independent switch (T0) and each switch series unit, opening time is 30%-60%, closes the first switch (1Ti) in each switch series unit and the 3rd switch (3Ti); When control command is heavily loaded H bridge driving topological structure, control the second switch (2Ti) in unlatching independent switch (T0) and each switch series unit, opening time is more than 70%, closes the first switch (1Ti) in each switch series unit and the 3rd switch (3Ti); When control command is underloading star driving topological structure, control to open the first switch (1Ti) in each switch series unit or the 3rd switch (3Ti), opening time is less than 30%, closes the second switch (2Ti) in an independent switch (T0) and each switch series unit; When control command is normal star driving topological structure, control to open the first switch (1Ti) in each switch series unit and the 3rd switch, opening time is 30%-60%, closes the second switch (2Ti) in an independent switch (T0) and each switch series unit; When control command is heavily loaded star driving topological structure, control to open the first switch (1Ti) in each switch series unit and the 3rd switch (3Ti), opening time is more than 70%, closes the second switch (2Ti) in an independent switch (T0) and each switch series unit.
7. structure changes electric system according to claim 1 and 2, is characterized in that, fault diagnosis algorithm concrete steps are:
1) each phase current of current sensor Real-time Collection, to carry out square process by each phase current, and adjacent biphase current square is carried out do difference and try to achieve the mutual residual error of each phase current;
2) carry out norm calculation or mathematic expectaion to the mutual residual error of phase current each time normal to calculate, norm value table or mathematical expectation table when setting up normal each phase current mutual residual error;
3) to step 1) the mutual residual error of each phase current that obtains carries out norm calculation or mathematic expectaion calculates, by each phase current of real time contrast mutual residual norm value or mathematical expectation and normal time each phase current mutual residual error time norm value or mathematical expectation, the particular location judging fault type and break down, and realize Fault Identification and isolation.
8. structure changes electric system according to claim 7, is characterized in that, according to mathematical expectation judge the concrete grammar of fault type and occurrence positions as:
If the electric current number of phases is odd number,
If the electric current number of phases is even number,
9. structure changes electric system according to claim 5, it is characterized in that, after master controller finds to there is the power tube fault in winding or power tube group, when being H bridge driving topological structure when driving topological structure, the winding driver element of closing fault place branch road and second switch or independent switch (T0), and take to keep the strategy that before and after fault, magnetomotive force is constant, the output current amplitude of adjustment non-faulting branch road and phase place;
When drive topological structure be star drive topological structure time, the star at closing fault place drives winding driver element in topology and the first switch or the 3rd switch, and the output current amplitude of adjustment non-faulting branch road doubles, phase invariant; Or star driven topological structure to change to H bridge and drive topological structure, and take to keep the strategy that before and after fault, magnetomotive force is constant, the output current amplitude of adjustment non-faulting branch road and phase place, the winding driver element of closing fault place branch road and second switch or independent switch (T0) again, the output current amplitude of adjustment non-faulting branch road doubles, phase invariant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980697.8A CN105471349B (en) | 2015-12-23 | 2015-12-23 | Structure changes electric system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510980697.8A CN105471349B (en) | 2015-12-23 | 2015-12-23 | Structure changes electric system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105471349A true CN105471349A (en) | 2016-04-06 |
| CN105471349B CN105471349B (en) | 2018-05-22 |
Family
ID=55608743
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510980697.8A Active CN105471349B (en) | 2015-12-23 | 2015-12-23 | Structure changes electric system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105471349B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125568A (en) * | 1998-10-16 | 2000-04-28 | Mitsubishi Heavy Ind Ltd | Inverter power supply device |
| 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 CN201510980697.8A patent/CN105471349B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000125568A (en) * | 1998-10-16 | 2000-04-28 | Mitsubishi Heavy Ind Ltd | Inverter power supply device |
| 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 |
|---|
| 司宾强等: "四相永磁容错电机短路故障容错策略", 《控制与决策》 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105471349B (en) | 2018-05-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104196080B (en) | Variable speed volume directly drives pure electric hydraulic crawler excavator and drives and energy-recuperation system | |
| CN105356816B (en) | Switched reluctance machines polymorphic type Fault-Tolerant System based on relay network | |
| CN101582671B (en) | Power converter for switch reluctance starter/generator | |
| CN102594243B (en) | Indirect matrix converter multi-machine transmission system and fault-tolerant operation control method thereof | |
| CN107634655A (en) | A kind of Novel DC electric power electric transformer topology that removing solid capacity is autotomyed with failure | |
| WO2015124122A1 (en) | Novel frequency conversion system for thermal power station | |
| CN101667805A (en) | Six-phase permanent magnet fault-tolerant motor control system | |
| CN204013310U (en) | Brushless dual-feed motor direct Torque Control | |
| CN106253791A (en) | A kind of fault-tolerant pair of Reliability Insurance motor driver of height used for electric vehicle | |
| CN201582146U (en) | Main-circulation main pump system of pure water cooling device | |
| CN105035984A (en) | Vertical lifting system of double-winding permanent magnet fault tolerance motor and control method of vertical lifting system | |
| CN104779882A (en) | Logic protection circuit and motor controller | |
| CN108809173B (en) | Common-bus open-winding brushless doubly-fed wind generator system fault-tolerant control method | |
| CN105610281B (en) | Open winding structure changes electric system | |
| CN106685311A (en) | Low-tension motor general control circuit and method based on programmable protector | |
| CN105471349A (en) | Variable structure motor system | |
| CN103437392B (en) | Hybrid power hydraulic excavator system and using method | |
| CN109812258B (en) | Drilling machine control equipment and control method thereof | |
| CN205023777U (en) | Fault -tolerant motor vertical -lift system of duplex winding permanent magnetism | |
| CN105391366B (en) | A kind of structure changes electric system | |
| CN106788104A (en) | Motorized motions fault tolerance facility, polyphase machine, power inverter and electrical equipment | |
| CN207368919U (en) | Multiwinding machine drive system and elevator system | |
| CN209586352U (en) | A kind of control system of rig | |
| CN105610280B (en) | A kind of open winding structure changes electric system | |
| 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 |