CN103457503A - Reconfigurable fault-tolerant type driving topological structure of redundant power source - Google Patents
Reconfigurable fault-tolerant type driving topological structure of redundant power source Download PDFInfo
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Abstract
The invention provides a reconfigurable fault-tolerant type driving topological structure of a redundant power source and belongs to the field of high-reliability motor driving control systems. The reconfigurable fault-tolerant type driving topological structure of the redundant power source comprises double power sources, N H-bridges, fuses, a reconfiguration switch and the like. The reconfigurable fault-tolerant type driving topological structure of the redundant power source is characterized in that in normal work, an independent H-bridge driving topological structure is applied to each phase, reconfiguration of the driving topological structure is achieved through switching on or switching off of the reconfiguration switch on the driving topological structure, namely, a fault can be isolated through the reconfiguration switch when the open-circuit fault or the short-circuit fault occurs on the power sources, power tubes and the reconfiguration switch, according to the type of the fault and the needs, the independent H-bridge driving topological structure of each phase can be reconfigured into star-shaped driving topology, finally, the fault tolerance function is achieved, and the reliability of the motor driving control system is improved. The reconfigurable fault-tolerant type driving topological structure of the redundant power source has the advantages of being flexible in power supply, capable of rapidly and conveniently isolating the fault and conducting hardware reconfiguration, rapid, strong in fault tolerance ability, flexible in use, free of an extra fault-tolerant algorithm, high in reliability and the like.
Description
Technical field
The present invention relates to redundant power restructural fault tolerant type and drive topological structure, belong to high reliability motor driving control system field.
Background technology
In order to improve the reliability of motor driven systems, common every independent H bridge driving topological structure that adopts mutually, perhaps adopt the star of redundancy brachium pontis to drive topological structure, the shortcoming of these two kinds of driving topological structures is to have fault-tolerant ability to certain fault, such as can only to winding open circuit and power tube open a way carry out fault-tolerant, and helpless to the short trouble of electric power system and power tube; And they are generally that structure is solidified, can not carry out structural remodeling according to fault type, thereby inevitably have fault tolerance single, need the shortcomings such as extra fault-tolerant control algolithm.The present invention proposes redundant power restructural fault tolerant type and drive topological structure, often during normal operation adopt mutually independent H bridge to drive topological structure, when breaking down, can fault be isolated by the reconstruct switch, according to fault type, with needs, can drive topological structure to reconstitute star on every mutually independent H bridge and drive topology, not only overcome the shortcoming of above-mentioned two kinds of driving topological structures, do not need too much fault-tolerant control algolithm, as long as the opening and closing of control reconfiguration switch, just can realize electric power system, the open circuit of power tube and reconstruct switch and the fault-tolerant ability of short trouble, and before and after can realizing fault, performance is very nearly the same, in rapidity, reliability, the aspect such as fault-tolerant ability and flexibility all is better than above-mentioned two types of fault-tolerant driving topological structures.
Summary of the invention
For the problems referred to above, the object of the present invention is to provide a kind of fast, fault-tolerant ability is strong, use flexibly, fault-tolerant driving topological structure that reliability is high.
For achieving the above object, the present invention by the following technical solutions, contains: duplicate supply, a N H bridge, fuse and reconstruct switch etc., wherein:
Duplicate supply VDC1 and VDC2, form the redundant power structure, respectively be provided with positive and negative output, connect respectively the positive and negative power input that redundant power restructural fault tolerant type drives topological structure, can single supply or duplicate supply work during normal operation, break down or, when the power tube fault occurs, while driving topological structure to be reconstructed, can certain power supply be kept apart from the driving topological structure by the reconstruct switch at some power supplys;
N H bridge, each H bridge is respectively by four power tubes (MOSFET) T_Xt, T_Xb, T_xt, T_xb forms, the X here represents the left side brachium pontis of every phase, corresponding x represents the right brachium pontis of every phase, t means pipe (top), the lower pipe (bottom) of b representative, other similar expressions, determine according to the number of phases of motor the independent H bridge quantity N needed, described each power tube is by three function pin-grids, drain electrode and source electrode form, the grid of described each power tube is controlled it by controller and is opened or close, the drain electrode of described T_Xt and T_xt connects the end of fuse F_X or F_x, their source electrode connects respectively the drain electrode of described T_Xb and T_xb and the two ends of every phase winding,
Fuse comprises main road fuse and each brachium pontis fuse, for the protection power supply, main road fuse near power supply end is F_M1 and F_M2, the end of described main road fuse F_M1 and F_M2 connects respectively the anode of power vd C1 and VDC2, the other end of described F_M1 and F_M2 connects respectively the drain electrode of reconstruct switch T1 and T2, and fuse F_X of series connection or F_x on each brachium pontis, X represents the left side brachium pontis of every phase, corresponding x represents the right brachium pontis of every phase, described F_X or the described redundant power restructural of F_x mono-termination fault tolerant type drive the power positive end of topological structure, when the drain electrode of the described T_Xt of an other termination or T_xt is used for preventing that brachium pontis is short-circuited fault, protect on other brachium pontis and the main road fuse,
The reconstruct switch is comprised of 8 IGBT, be expressed as T1-T8, each Tx in described IGBT, x=1-8, by three function pin-grids, drain electrode and source electrode form, described their grid all has controller to control them to open or close, wherein said T1 and T2 are for controlling the output of described power vd C1, described T3 and T4 are for controlling the output of described power vd C2, the drain electrode of described T1 and T3 connects respectively the anode of described main road fuse F_M1 and F_M2, the source electrode of described T1 and T3 connects respectively the anode that described redundant power restructural fault tolerant type drives topological structure, the drain electrode of described T2 and T4 connects respectively the negative terminal that redundant power restructural fault tolerant type drives topological structure, the source electrode of described T2 and T4 connects respectively the negative terminal of described power vd C1 and VDC2, the source electrode of described T5 and T7 connects respectively anode and the negative terminal that described redundant power restructural fault tolerant type drives the topological structure left-half, the drain electrode of described T5 and T7 connects described redundant power restructural fault tolerant type by diode D1 and D3 respectively and drives the topological structure right half part, the source electrode of described T6 and T8 connects respectively the right half part that described redundant power restructural fault tolerant type drives topological structure, the drain electrode of described T6 and T8 connects respectively by diode D2 and D4 the left-half that described redundant power restructural fault tolerant type drives topological structure respectively, for a reconstruct left side, right brachium pontis power supply is from VDC1 or VDC2,
Take the 4 phase permanent magnet fault tolerant motor as example, and described redundant power restructural fault tolerant type drives topological structure to be reconstructed according to the following steps work with isolation drive topological structure fault:
A. described duplicate supply VDC1 and VDC2 are respectively by fuse F_M1, reconstruct switch T1, T2 and F_M2, reconstruct switch T3, T4 is connected to the left side of each independent H bridge, on right two brachium pontis, described each independent H bridge is comprised of 4 power tubes, be expressed as respectively T_Xt, T_Xb, T_xt and T_xb, wherein X means left side brachium pontis, x means the right brachium pontis, X and x depend on the number of the number of phases, the desirable A of difference in the 4 phase permanent magnet fault tolerant motor, B, C, D and a, b, c, d, t represents power tube above brachium pontis, b represents power tube below brachium pontis, two mid points of H bridge are connected with two terminals of every phase winding of external motor respectively, see Fig. 1, described reconstruct switch T5, T6, T7 and T8 and D1, D2, D3 and D4 for providing current path when left and right brachium pontis employing different electrical power is powered, simultaneously when driving topological structure to reconstitute star driving topological structure by independent H bridge, reconstruct side power tube can be disconnected from power end, see Fig. 2 and Fig. 3,
B. the fault type of described redundant power restructural fault tolerant type driving topological structure and failure tolerant reconstruct truth table are in Table 1, when single supply short circuit 2 type faults and power tube generation open circuit or short trouble occur when, need to drive topology reconstitute star from independent H bridge and drive topological structure, other fault types and failure tolerant reconstruct truth table and corresponding power tube reconstruct truth table are respectively in Table 1 and table 2;
C. in order to illustrate that driving topology how to reconstitute star from independent H bridge drives topological structure, now provide example, other similar faults are also so processed.Adopt described duplicate supply VDC1 and VDC2 power supply while supposing normal operation, open fault occurs in power tube T_Ab below described A phase left side brachium pontis detected, in order to make the failure tolerant front and back, motor output torque is very nearly the same, from table 1 and table 2, now fault type is (11), can be by described power vd C1 from driving topological structure to keep apart, close reconstruct T1 and T2, close power tube T_Bb below the brachium pontis of the described left side of other three-phase simultaneously, T_Cb and T_Db, and open power tube T_At above four mutually described left side brachium pontis, T_Bt, T_Ct and T_Dt, so just four phase winding left side end points have been linked together, drive like this topological structure just from independent H bridge, to reconstitute star and driven topological structure, see Fig. 2, adopt described duplicate supply VDC1 and VDC2 power supply while supposing normal operation, the power tube T_Ab fault that is short-circuited below described A phase left side brachium pontis detected, in order to make the failure tolerant front and back, motor output torque is very nearly the same, from table 1 and table 2, now fault type is (12), can be by described power vd C1 from driving topological structure to keep apart, close reconstruct T1 and T2, open power tube T_Bb below the brachium pontis of the described left side of other three-phase simultaneously, T_Cb and T_Db, and close power tube T_At above four mutually described left side brachium pontis, T_Bt, T_Ct and T_Dt, so just four phase winding left side end points have been linked together, drive like this topological structure just from independent H bridge, to reconstitute star and driven topological structure, see Fig. 3,
Redundant power restructural fault tolerant type provided by the present invention drives topological structure, can carry out fault-tolerantly to the open circuit that drives the devices such as power supply on topological structure, switch, power tube and short trouble, can drive topological structure carry out dynamic restructuring according to fault-tolerant needs simultaneously.
The present invention adopts above technical scheme working and can obtain the performance identical with the conventional ADS driving topological structure after failure tolerant, can replace traditional independent H bridge and drive topological structure, eliminated that structure is solidified, function singleness, needed the shortcoming such as extra fault-tolerant control algolithm, have structurally variable, complete function, fault-tolerant ability strong, fast, use flexibly, without extra tolerant fail algorithm, high reliability.
The accompanying drawing explanation
Fig. 1: theory diagram of the present invention.
Fig. 2: the fault-tolerant rear drive topology diagram of open-circuit fault of power tubes.
Fig. 3: the fault-tolerant rear drive topology diagram of power tube short trouble.
Embodiment
Below in conjunction with accompanying drawing and example, the invention will be further described, and accompanying drawing described herein only is used to provide a further understanding of the present invention, is the application's a part, does not form the restriction to the present invention program.
Redundant power restructural fault tolerant type drives topological structure, see accompanying drawing 1, it is characterized in that, it is by driving the reconstruct of opening or close to realize to drive topological structure of the reconstruct switch on topological structure, at power supply, can be by the reconstruct switch when open circuit or short trouble occur for power tube and reconstruct switch, make the mode that drives topological structure to carry out hardware reconstruct that fault is reduced to minimum to the impact of motor driven systems, finally realize the failure tolerant function, improve the reliability of driving control system for electric machine, contain: duplicate supply, N H bridge, fuse and reconstruct switch etc., wherein:
Duplicate supply VDC1 and VDC2, form the redundant power structure, respectively be provided with positive and negative output, connect respectively the positive and negative power input that redundant power restructural fault tolerant type drives topological structure, can single supply or duplicate supply work during normal operation, break down or, when the power tube fault occurs, while driving topological structure to be reconstructed, can certain power supply be kept apart from the driving topological structure by the reconstruct switch at some power supplys;
N H bridge, each H bridge is respectively by four power tubes (MOSFET) T_Xt, T_Xb, T_xt, T_xb forms, the X here represents the left side brachium pontis of every phase, corresponding x represents the right brachium pontis of every phase, t means pipe (top), the lower pipe (bottom) of b representative, other similar expressions, determine according to the number of phases of motor the independent H bridge quantity N needed, described each power tube is by three function pin-grids, drain electrode and source electrode form, the grid of described each power tube is controlled it by controller and is opened or close, the drain electrode of described T_Xt and T_xt connects the end of fuse F_X or F_x, their source electrode connects respectively the drain electrode of described T_Xb and T_xb and the two ends of every phase winding,
Fuse comprises main road fuse and each brachium pontis fuse, for the protection power supply, main road fuse near power supply end is F_M1 and F_M2, the end of described main road fuse F_M1 and F_M2 connects respectively the anode of power vd C1 and VDC2, the other end of described F_M1 and F_M2 connects respectively the drain electrode of reconstruct switch T1 and T2, and fuse F_X of series connection or F_x on each brachium pontis, X represents the left side brachium pontis of every phase, corresponding x represents the right brachium pontis of every phase, described F_X or the described redundant power restructural of F_x mono-termination fault tolerant type drive the power positive end of topological structure, when the drain electrode of the described T_Xt of an other termination or T_xt is used for preventing that brachium pontis is short-circuited fault, protect on other brachium pontis and the main road fuse,
The reconstruct switch is comprised of 8 IGBT, be expressed as T1-T8, each Tx in described IGBT, x=1-8, by three function pin-grids, drain electrode and source electrode form, described their grid all has controller to control them to open or close, wherein said T1 and T2 are for controlling the output of described power vd C1, described T3 and T4 are for controlling the output of described power vd C2, the drain electrode of described T1 and T3 connects respectively the anode of described main road fuse F_M1 and F_M2, the source electrode of described T1 and T3 connects respectively the anode that described redundant power restructural fault tolerant type drives topological structure, the drain electrode of described T2 and T4 connects respectively the negative terminal that redundant power restructural fault tolerant type drives topological structure, the source electrode of described T2 and T4 connects respectively the negative terminal of described power vd C1 and VDC2, the source electrode of described T5 and T7 connects respectively anode and the negative terminal that described redundant power restructural fault tolerant type drives the topological structure left-half, the drain electrode of described T5 and T7 connects described redundant power restructural fault tolerant type by diode D1 and D3 respectively and drives the topological structure right half part, the source electrode of described T6 and T8 connects respectively the right half part that described redundant power restructural fault tolerant type drives topological structure, the drain electrode of described T6 and T8 connects respectively by diode D2 and D4 the left-half that described redundant power restructural fault tolerant type drives topological structure respectively, for a reconstruct left side, right brachium pontis power supply is from VDC1 or VDC2,
Take the 4 phase permanent magnet fault tolerant motor as example, and described redundant power restructural fault tolerant type drives topological structure to be reconstructed according to the following steps work with isolation drive topological structure fault:
A. described duplicate supply VDC1 and VDC2 are respectively by fuse F_M1, reconstruct switch T1, T2 and F_M2, reconstruct switch T3, T4 is connected to the left side of each independent H bridge, on right two brachium pontis, described each independent H bridge is comprised of 4 power tubes, be expressed as respectively T_Xt, T_Xb, T_xt and T_xb, wherein X means left side brachium pontis, x means the right brachium pontis, X and x depend on the number of the number of phases, the desirable A of difference in the 4 phase permanent magnet fault tolerant motor, B, C, D and a, b, c, d, t represents power tube above brachium pontis, b represents power tube below brachium pontis, two mid points of H bridge are connected with two terminals of every phase winding of external motor respectively, see Fig. 1, described reconstruct switch T5, T6, T7 and T8 and D1, D2, D3 and D4 for providing current path when left and right brachium pontis employing different electrical power is powered, simultaneously when driving topological structure to reconstitute star driving topological structure by independent H bridge, reconstruct side power tube can be disconnected from power end, see Fig. 2 and Fig. 3,
B. the fault type of described redundant power restructural fault tolerant type driving topological structure and failure tolerant reconstruct truth table are in Table 1, when single supply short circuit 2 type faults or power tube generation open circuit or short trouble occur when, need to drive topology reconstitute star from independent H bridge and drive topological structure, failure tolerant reconstruct truth table and corresponding power tube reconstruct truth table are respectively in Table 1 and table 2;
Table 1
Table 2
C. in order to illustrate that driving topology how to reconstitute star from independent H bridge drives topological structure, now provide example, other similar faults are also so processed.Adopt described duplicate supply VDC1 and VDC2 power supply while supposing normal operation, open fault occurs in power tube T_Ab below described A phase left side brachium pontis detected, in order to make the failure tolerant front and back, motor output torque is very nearly the same, from table 1 and table 2, now fault type is (11), can be by described power vd C1 from driving topological structure to keep apart, close reconstruct T1 and T2, close power tube T_Bb below the brachium pontis of the described left side of other three-phase simultaneously, T_Cb and T_Db, and open power tube T_At above four mutually described left side brachium pontis, T_Bt, T_Ct and T_Dt, so just four phase winding left side end points have been linked together, drive like this topological structure just from independent H bridge, to reconstitute star and driven topological structure, see Fig. 2, adopt described duplicate supply VDC1 and VDC2 power supply while supposing normal operation, the power tube T_Ab fault that is short-circuited below described A phase left side brachium pontis detected, in order to make the failure tolerant front and back, motor output torque is very nearly the same, from table 1 and table 2, now fault type is (12), can be by described power vd C1 from driving topological structure to keep apart, close reconstruct T1 and T2, open power tube T_Bb below the brachium pontis of the described left side of other three-phase simultaneously, T_Cb and T_Db, and close power tube T_At above four mutually described left side brachium pontis, T_Bt, T_Ct and T_Dt, so just four phase winding left side end points have been linked together, drive like this topological structure just from independent H bridge, to reconstitute star and driven topological structure, see Fig. 3,
The present embodiment adopts the power tube of the MOSFET of American I XYS company as the every phase winding of drive motors, and model is IXFX64N60P;
Reconstruct switch T1-T8 selects the IGBT of American I XYS company, and model is IXXX160N65C4, according to different needs of work, opens it or closes, can be by the purpose that drives topological structure to be reconstructed thereby realize;
Main road fuse and each brachium pontis fuse are selected the ultrafast quick-break formula of the high voltage fuse of U.S. TE company, and model is 2410SFV20.OFM/065-2, and for when overcurrent condition occurs, can quick fuse, thus protection power source or other non-fault brachium pontis;
Diode D1-D4 selects the ultrafast large current diode of U.S. FAIRCHILD company, and model is FFH60UP60S, for being used in combination as driving left and right brachium pontis on topological structure that current path is provided with reconstruct switch T5-T8.
Above-described embodiment; purpose of the present invention, technical scheme and beneficial effect are further described; institute is understood that; the foregoing is only the specific embodiment of the present invention; the protection range be not intended to limit the present invention; within the spirit and principles in the present invention all, any modification of making, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (1)
1. redundant power restructural fault tolerant type drives topological structure, it is characterized in that, contains: duplicate supply, a N H bridge, fuse and reconstruct switch, wherein:
Duplicate supply VDC1 and VDC2, respectively be provided with positive and negative output, connects respectively the positive and negative power input that redundant power restructural fault tolerant type drives topological structure;
N H bridge, each H bridge is respectively by four power tube T_Xt, T_Xb, T_xt, T_xb forms, the X here represents the left side brachium pontis of every phase, corresponding x represents the right brachium pontis of every phase, t means pipe, the lower pipe of b representative, other similar expressions, determine according to the number of phases of motor the independent H bridge quantity N needed, described each power tube is by three function pin-grids, drain electrode and source electrode form, the grid of described each power tube is controlled it by controller and is opened or close, the drain electrode of described T_Xt and T_xt connects the end of fuse F_X or F_x, their source electrode connects respectively the drain electrode of described T_Xb and T_xb and the two ends of every phase winding,
Fuse comprises main road fuse and each brachium pontis fuse, for the protection power supply, main road fuse near power supply end is F_M1 and F_M2, the end of described main road fuse F_M1 and F_M2 connects respectively the anode of power vd C1 and VDC2, the other end of described F_M1 and F_M2 connects respectively the drain electrode of reconstruct switch T1 and T2, and fuse F_X of series connection or F_x on each brachium pontis, X represents the left side brachium pontis of every phase, corresponding x represents the right brachium pontis of every phase, described F_X or the described redundant power restructural of F_x mono-termination fault tolerant type drive the power positive end of topological structure, when the drain electrode of the described T_Xt of an other termination or T_xt is used for preventing that brachium pontis is short-circuited fault, protect on other brachium pontis and the main road fuse,
The reconstruct switch is comprised of 8 IGBT, be expressed as T1-T8, each Tx in described IGBT, x=1-8, by three function pin-grids, drain electrode and source electrode form, described their grid all has controller to control them to open or close, wherein said T1 and T2 are for controlling the output of described power vd C1, described T3 and T4 are for controlling the output of described power vd C2, the drain electrode of described T1 and T3 connects respectively the anode of described main road fuse F_M1 and F_M2, the source electrode of described T1 and T3 connects respectively the anode that described redundant power restructural fault tolerant type drives topological structure, the drain electrode of described T2 and T4 connects respectively the negative terminal that redundant power restructural fault tolerant type drives topological structure, the source electrode of described T2 and T4 connects respectively the negative terminal of described power vd C1 and VDC2, the source electrode of described T5 and T7 connects respectively anode and the negative terminal that described redundant power restructural fault tolerant type drives the topological structure left-half, the drain electrode of described T5 and T7 connects described redundant power restructural fault tolerant type by diode D1 and D3 respectively and drives the topological structure right half part, the source electrode of described T6 and T8 connects respectively the right half part that described redundant power restructural fault tolerant type drives topological structure, the drain electrode of described T6 and T8 connects respectively by diode D2 and D4 the left-half that described redundant power restructural fault tolerant type drives topological structure respectively, for reconstruct left and right brachium pontis, power from VDC1 or VDC2.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2016135336A1 (en) * | 2015-02-26 | 2016-09-01 | Schwöller Hans | Dc motor/generator comprising integrated power control, and control circuit for a dc motor |
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