CN208433927U - One kind opening winding three-phase electric system and fault-tolerant driving circuit - Google Patents
One kind opening winding three-phase electric system and fault-tolerant driving circuit Download PDFInfo
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- CN208433927U CN208433927U CN201821134421.3U CN201821134421U CN208433927U CN 208433927 U CN208433927 U CN 208433927U CN 201821134421 U CN201821134421 U CN 201821134421U CN 208433927 U CN208433927 U CN 208433927U
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Abstract
The utility model relates to one kind to open winding three-phase electric system and fault-tolerant driving circuit, fault-tolerant driving circuit includes direct current electrical interface for connecting DC power supply and the first inverter circuit and the second inverter circuit, direct current electrical interface connects the DC side of the first inverter circuit and the DC side of the second inverter circuit, string is equipped with the first power switch in connection line between direct current electrical interface and the DC side of the first inverter circuit, and string is equipped with second source and switchs in the connection line between direct current electrical interface and the DC side of the second inverter circuit.For any one inverter circuit, string is equipped with power switch in connection line between direct current electrical interface and the DC side of the inverter circuit, when needing to overhaul the inverter circuit, disconnect corresponding power switch, without to inverter circuit hot line job, maintenance safety is improved, guarantees the personal safety of staff.
Description
Technical field
The utility model relates to one kind to open winding three-phase electric system and fault-tolerant driving circuit.
Background technique
As energy crisis and problem of environmental pollution become increasingly conspicuous, electric car is as solution environmental pollution and energy crisis
Effective way, be increasingly becoming the hot spot of home and abroad research and development.Inverter is the weak ring in drive system of electric automobile
Section, the power tube of inverter easily break down, and inverter, which breaks down, will affect the normally travel of electric car.Therefore, it is
Solution such case, researchers at home and abroad propose various fault-toleranr techniques, with the stability of maintenance system.But it is most such
Technology based on a kind of single fault-tolerant architecture, lacks certain reliability, or reduce the performance of system, to a certain degree
On be not able to satisfy drive system of electric automobile high reliability, the requirement of high stability.
Application publication number is that the Chinese patent application file of CN108092594A discloses a kind of winding three-phase motor opened
Tolerant system, control object are to open winding three-phase motor, including two inverters, each inverter include three normal bridge arms with
One redundancy bridge arm, when normal operation, the two redundancy bridge arms do not work, when some normal bridge arm in some inverter
When there is open-circuit fault, the bridge arm of failure is out of service, puts into corresponding redundancy bridge arm, realizes faults-tolerant control.Moreover, working as
When the failure of some inverter needs to overhaul it, need to disconnect the connection between the inverter and DC power supply.
But in the above-mentioned tolerant system for opening winding three-phase motor, switchgear is not provided between inverter and DC power supply, also
Connection relationship between the two can not be disconnected, hot line job is merely able to, and it is poor to charge the safety overhauled to inverter.
Utility model content
The purpose of the utility model is to provide one kind to open winding three-phase motor fault-tolerant driving circuit, to solve electrification to inverse
The poor problem of the safety that change device is overhauled.The utility model provides one kind simultaneously and opens winding three-phase electric system.
To achieve the above object, the utility model includes following technical scheme.
One kind opening winding three-phase motor fault-tolerant driving circuit, and the application of the fault-tolerant driving circuit is to open winding three-phase
Motor, the winding three-phase motor of opening is with the first phase winding, the second phase winding and third phase winding, the fault-tolerant driving circuit
Including the direct current electrical interface and the first inverter circuit and the second inverter circuit for connecting DC power supply, the direct current electrical interface
The DC side of first inverter circuit and the DC side of the second inverter circuit are connected, first inverter circuit includes the first bridge
Arm, the second bridge arm and third bridge arm, the second inverter circuit include the 5th bridge arm, the 6th bridge arm and the 7th bridge arm, first bridge
String is equipped with the first power tube and the second power tube on arm, and string is equipped with third power tube and the 4th power tube on second bridge arm,
String is equipped with the 5th power tube and the 6th power tube on the third bridge arm, and string is equipped with the 9th power tube and the on the 5th bridge arm
Ten power tubes, string is equipped with the 11st power tube and the 12nd power tube on the 6th bridge arm, goes here and there and is equipped on the 7th bridge arm
The tie point of 13rd power tube and the 14th power tube, first power tube and the second power tube is for connecting described first
The tie point of one end of phase winding, the third power tube and the 4th power tube is used to connect one end of second phase winding,
The tie point of 5th power tube and the 6th power tube is used to connect one end of the third phase winding, the 9th power tube
It is used to connect the other end of the third phase winding, the 11st power tube and the 12nd function with the tie point of the tenth power tube
The tie point of rate pipe is used to connect the other end of second phase winding, the company of the 13rd power tube and the 14th power tube
Contact is used to connect the other end of first phase winding, the DC side of the direct current electrical interface and first inverter circuit it
Between connection line on string be equipped with the first power switch, between the direct current electrical interface and the DC side of second inverter circuit
Connection line on string be equipped with second source switch.
For any one inverter circuit, in the connection line between direct current electrical interface and the DC side of the inverter circuit
String is equipped with power switch, when needing to overhaul the inverter circuit, disconnects corresponding power switch, without to inverter circuit
Hot line job improves maintenance safety, guarantees the personal safety of staff.Moreover, no matter which inverter circuit occurs
Failure, need to only disconnect corresponding power switch, and maintenance flexibility is higher.
Further, first inverter circuit further includes that the first redundancy bridge arm and/or second inverter circuit also wrap
The second redundancy bridge arm is included, string is equipped with the 7th power tube and the 8th power tube, the second redundancy bridge on the first redundancy bridge arm
String is equipped with the 15th power tube and the 16th power tube on arm, the tie point of first power tube and the second power tube with it is described
The tie point of 7th power tube and the 8th power tube is connected by the first control switch, the third power tube and the 4th power tube
Tie point connect with the tie point of the 7th power tube and the 8th power tube by the second control switch, the 5th power
The tie point of the tie point and the 7th power tube and the 8th power tube of pipe and the 6th power tube is connected by third control switch
It connects, the tie point of the 9th power tube and the tenth power tube and the tie point of the 15th power tube and the 16th power tube
It is connected by the 4th control switch, the tie point and the 15th power tube of the 11st power tube and the 12nd power tube
It is connected with the tie point of the 16th power tube by the 5th control switch, the company of the 13rd power tube and the 14th power tube
Contact is connect with the tie point of the 15th power tube and the 16th power tube by the 6th control switch.
When circuit works normally, the first bridge arm, the second bridge arm, third bridge arm, the 5th bridge arm, the 6th bridge arm and the 7th bridge
Arm operates normally, and powers to machine winding, and corresponding redundancy bridge arm and control switch do not work, and DC power supply passes through the circuit energy
Enough realize driving function；For being provided with the inverter circuit of redundancy bridge arm, when some bridge arm in the inverter circuit is opened
When the failure of road, the power tube in the bridge arm of failure is out of service, and control switch corresponding with the failure bridge arm and superfluous
Remaining bridge arm puts into operation, and the redundant circuit for constituting the failure bridge arm puts into operation, faults-tolerant control is realized, therefore, even if a certain bridge
Arm breaks down, and circuit can still operate normally, and realizes normal driving, promotes circuit reliability.Even if moreover, in failure feelings
Under condition, to the connection of machine winding, there is no limit as long as be forwarded to phase the switching drive signal that should be dealt into failure bridge arm originally
The redundancy bridge arm answered, control is simple, and safe and reliable.
Further, first bridge arm, the second bridge arm, third bridge arm, the 5th bridge arm, the 6th bridge arm and the 7th bridge arm
Both ends are provided with fuse.
Power when short trouble occurs in bridge arm a certain in the inverter circuit for being provided with redundancy bridge arm, on corresponding bridge arm
Pipe, two fuses on the bridge arm and DC power supply are just formed into a loop, and two fuses are blown because of overcurrent, the bridge arm from
Circuit Interrupt is opened, and short trouble is automatically converted to open-circuit fault, and open-circuit fault of power tubes fault-tolerant strategy is recycled to carry out fault-tolerant control
System.So increasing fuse, for being quickly disconnected from the circuit corresponding bridge arm when short trouble occurs for power tube, protect
Protection circuit other elements are not damaged, and realize faults-tolerant control.
Further, first control switch, the second control switch, third control switch, the 4th control switch, the 5th
Control switch and the 6th control switch are bidirectional thyristor.
Further, first power tube, the second power tube, third power tube, the 4th power tube, the 5th power tube,
6th power tube, the 7th power tube, the 8th power tube, the 9th power tube, the tenth power tube, the 11st power tube, the 12nd function
Rate pipe, the 13rd power tube, the 14th power tube, the 15th power tube and the 16th power tube are IGBT, and reversed
It is parallel with corresponding diode.
One kind opening winding three-phase electric system, including opens winding three-phase motor and fault-tolerant driving circuit, described to open winding three
Phase motor has the first phase winding, the second phase winding and third phase winding, and the fault-tolerant driving circuit includes for connecting direct current
The direct current electrical interface and the first inverter circuit of power supply and the second inverter circuit, the direct current electrical interface connect first inversion
The DC side of the DC side of circuit and the second inverter circuit, first inverter circuit include the first bridge arm, the second bridge arm and the
Three bridge arms, the second inverter circuit include the 5th bridge arm, the 6th bridge arm and the 7th bridge arm, and string is equipped with the first function on first bridge arm
Rate pipe and the second power tube, string is equipped with third power tube and the 4th power tube on second bridge arm, goes here and there on the third bridge arm
Equipped with the 5th power tube and the 6th power tube, string is equipped with the 9th power tube and the tenth power tube on the 5th bridge arm, and described the
String is equipped with the 11st power tube and the 12nd power tube on six bridge arms, and string is equipped with the 13rd power tube and the on the 7th bridge arm
The tie point of 14 power tubes, first power tube and the second power tube connects one end of first phase winding, and described
The tie point of three power tubes and the 4th power tube connects one end of second phase winding, the 5th power tube and the 6th power
The tie point of pipe connects one end of the third phase winding, described in the tie point connection of the 9th power tube and the tenth power tube
The tie point of the other end of third phase winding, the 11st power tube and the 12nd power tube connects second phase winding
The tie point of the other end, the 13rd power tube and the 14th power tube connects the other end of first phase winding, described
String is equipped with the first power switch in connection line between direct current electrical interface and the DC side of first inverter circuit, described straight
String is equipped with second source and switchs in connection line between galvanic electricity interface and the DC side of second inverter circuit.
Further, first inverter circuit further includes that the first redundancy bridge arm and/or second inverter circuit also wrap
The second redundancy bridge arm is included, string is equipped with the 7th power tube and the 8th power tube, the second redundancy bridge on the first redundancy bridge arm
String is equipped with the 15th power tube and the 16th power tube on arm, the tie point of first power tube and the second power tube with it is described
The tie point of 7th power tube and the 8th power tube is connected by the first control switch, the third power tube and the 4th power tube
Tie point connect with the tie point of the 7th power tube and the 8th power tube by the second control switch, the 5th power
The tie point of the tie point and the 7th power tube and the 8th power tube of pipe and the 6th power tube is connected by third control switch
It connects, the tie point of the 9th power tube and the tenth power tube and the tie point of the 15th power tube and the 16th power tube
It is connected by the 4th control switch, the tie point and the 15th power tube of the 11st power tube and the 12nd power tube
It is connected with the tie point of the 16th power tube by the 5th control switch, the company of the 13rd power tube and the 14th power tube
Contact is connect with the tie point of the 15th power tube and the 16th power tube by the 6th control switch.
Further, first bridge arm, the second bridge arm, third bridge arm, the 5th bridge arm, the 6th bridge arm and the 7th bridge arm
Both ends are provided with fuse.
Further, first control switch, the second control switch, third control switch, the 4th control switch, the 5th
Control switch and the 6th control switch are bidirectional thyristor.
Further, first power tube, the second power tube, third power tube, the 4th power tube, the 5th power tube,
6th power tube, the 7th power tube, the 8th power tube, the 9th power tube, the tenth power tube, the 11st power tube, the 12nd function
Rate pipe, the 13rd power tube, the 14th power tube, the 15th power tube and the 16th power tube are IGBT, and reversed
It is parallel with corresponding diode.
Detailed description of the invention
Fig. 1 is out the circuit diagram of winding three-phase electric system embodiment one；
Fig. 2 is out the circuit diagram under one circuit normal operating conditions of winding three-phase electric system embodiment；
Fig. 3 is out that some bridge arm in winding three-phase electric system embodiment one in first inverter circuit is opened a way
Equivalent circuit diagram when failure；
Fig. 4 is out that some bridge arm in winding three-phase electric system embodiment one in second inverter circuit is opened a way
Equivalent circuit diagram when failure；
Fig. 5 is out the circuit diagram of winding three-phase electric system embodiment two.
Specific embodiment
Open winding three-phase electric system embodiment one
The present embodiment provides one kind to open winding three-phase electric system, including opens winding three-phase motor and fault-tolerant driving circuit,
The control object of fault-tolerant driving circuit is to open winding three-phase motor, and in the present embodiment, opening winding three-phase motor is specially to open winding
Permanent magnet synchronous motor, the three-phase motor winding for opening winding permanent magnet synchronous motor is mutually indepedent, respectively the first phase winding, second
Phase winding and third phase winding respectively correspond winding C, winding B and winding A in Fig. 1.
Fault-tolerant driving circuit includes direct current electrical interface and the first inverter circuit (hereinafter referred to as inverter 1) and the second inversion
Circuit (hereinafter referred to as inverter 2), the direct current electrical interface is for connecting DC power supply (such as Vehicular accumulator cell or power electric
Pond), which connects the DC side of inverter 1 and the DC side of inverter 2.
String is equipped with the first power switch, corresponding diagram 1 in connection line between direct current electrical interface and the DC side of inverter 1
In power switch K2, string is equipped with second source and switchs in the connection line between direct current electrical interface and the DC side of inverter 2,
Power switch K1 in corresponding diagram 1.
Inverter 1 includes the first bridge arm, the second bridge arm, third bridge arm and the first redundancy bridge arm, and inverter 2 includes the 5th bridge
Arm, the 6th bridge arm, the 7th bridge arm and the second redundancy bridge arm respectively correspond bridge arm 1, bridge arm 2, bridge arm 3, bridge arm 4, bridge in Fig. 1
Arm 5, bridge arm 6, bridge arm 7 and bridge arm 8.Wherein, the anode of this eight bridge arms is connected with the anode of DC power supply, this eight bridge arms
Cathode be connected with the cathode of DC power supply.First power tube, the second power tube, third power tube, the 4th power tube, the 5th
Power tube, the 6th power tube, the 7th power tube, the 8th power tube, the 9th power tube, the tenth power tube, the 11st power tube,
12 power tubes, the 13rd power tube, the 14th power tube, the 15th power tube and the 16th power tube respectively correspond in Fig. 1
Power tube Q1, power tube Q2, power tube Q3, power tube Q4, power tube Q5, power tube Q6, power tube Q7, power tube Q8, function
Rate pipe Q9, power tube Q10, power tube Q11, power tube Q12, power tube Q13, power tube Q14, power tube Q15 and power tube
Q16.In the present embodiment, for power tube Q1~Q16 by taking IGBT as an example, equal reverse parallel connection has body diode.
As shown in Figure 1, string is equipped with power tube Q1 and power tube Q2 on bridge arm 1, string is equipped with power tube Q3 and power on bridge arm 2
Pipe Q4, string is equipped with power tube Q5 and power tube Q6 on bridge arm 3, and string is equipped with power tube Q7 and power tube Q8 on bridge arm 4, on bridge arm 5
String is equipped with power tube Q9 and power tube Q10, and string is equipped with power tube Q11 and power tube Q12 on bridge arm 6, and string is equipped with power on bridge arm 7
Pipe Q13 and power tube Q14, string is equipped with power tube Q15 and power tube Q16 on bridge arm 8.
The tie point of power tube Q1 and power tube Q2 and the tie point of power tube Q7 and power tube Q8 are opened by the first control
Connection connects, in the present embodiment, bidirectional thyristor TR3 in the first control switch corresponding diagram 1, and the company of power tube Q3 and power tube Q4
Contact is connect with the tie point of power tube Q7 and power tube Q8 by the second control switch, that is, passes through the bidirectional thyristor in Fig. 1
The tie point of TR2 connection, power tube Q5 and power tube Q6 are opened with the tie point of power tube Q7 and power tube Q8 by third control
Connection connects, that is, passes through the bidirectional thyristor TR1 connection in Fig. 1；The tie point of power tube Q9 and power tube Q10 and power tube Q15
It is connected with the tie point of power tube Q16 by the 4th control switch, that is, passes through the bidirectional thyristor TR6 connection in Fig. 1, power tube
The tie point of Q11 and power tube Q12 are connect with the tie point of power tube Q15 and power tube Q16 by the 5th control switch, i.e., logical
Cross the bidirectional thyristor TR5 connection in Fig. 1, the tie point and power tube Q15 and power tube Q16 of power tube Q13 and power tube Q14
Tie point connected by the 6th control switch, that is, pass through the bidirectional thyristor TR4 connection in Fig. 1.Certainly, each control among the above
System switch can also be other kinds of control switch, such as IGBT.
Power tube Q1 connects one end of winding C, the tie point of power tube Q3 and power tube Q4 with the tie point of power tube Q2
One end of winding B is connected, power tube Q5 connects one end of winding A, power tube Q9 and power tube Q10 with the tie point of power tube Q6
Tie point connection winding A the other end, power tube Q11 connects the other end of winding B, power with the tie point of power tube Q12
Pipe Q13 connects the other end of winding C with the tie point of power tube Q14, i.e., each tie point is separately connected the leading-out terminal of corresponding winding.
Certainly, in order to realize control, fault-tolerant driving circuit further includes control section, and certainly, which can also be
The control equipment that system there is originally, is not belonging to a part of the fault-tolerant driving circuit.In the present embodiment, control section is to be
System controller, wherein the grid of power tube Q1~Q16 is connected with system controller, is inputted triggering by system controller or is broken
Driving signal is opened, the control electrode of bidirectional thyristor TR1, TR2, TR3, TR4, TR5, TR6 are connected with system controller, by system
Controller input or break trigger signal.
Circuit is in failure free operation, as shown in Fig. 2, only bridge arm 1, bridge arm 2, bridge arm 3, bridge arm 5, bridge arm 6 and bridge
Arm 7 gives motor three-phase windings A, B, C power supply, two redundancy bridge arms and six bidirectional thyristor TR1, TR2, TR3, TR4, TR5,
TR6 does not work, and DC power supply opens winding permanent magnet synchronous motor by two inverter controls and realizes driving function.
When there is open-circuit fault in a certain bridge arm in bridge arm 1, bridge arm 2 and the bridge arm 3 in inverter 1, system controller
The driving signal of two power tubes in the failure bridge arm is disconnected, bidirectional thyristor conducting corresponding with the failure bridge arm is triggered,
Simultaneously by two power tubes in the corresponding control bridge arm 4 of the driving signal of failure bridge arm, by the bidirectional thyristor and bridge being triggered
The redundant circuit that arm 4 is constituted puts into operation, instead of the failure bridge arm being disconnected, realizes the redundancy running under fault condition.With bridge
For there is open-circuit fault in power tube Q1 and power tube Q2 in arm 1, as shown in figure 3, system controller disconnect power tube Q1 and
The driving signal of power tube Q2, control bidirectional thyristor TR3 conducting, the driving for being used for power tube Q1 and power tube Q2 originally is believed
It number is respectively used to control power tube Q7 and power tube Q8, the redundant circuit for making bidirectional thyristor TR3 and bridge arm 4 constitute bridge arm 1 is thrown
Enter operation, realizes faults-tolerant control.DC power supply opens winding permanent magnet synchronous motor still through two inverter controls and realizes driving
As before function, motor performance indexes and failure generation.
When there is open-circuit fault in a certain bridge arm in bridge arm 5, bridge arm 6 and the bridge arm 7 in inverter 2, system controller
The driving signal of two power tubes in the failure bridge arm is disconnected, bidirectional thyristor conducting corresponding with the failure bridge arm is triggered,
Simultaneously by two power tubes in the corresponding control bridge arm 8 of the driving signal of failure bridge arm, by the bidirectional thyristor and bridge being triggered
The redundant circuit that arm 8 is constituted puts into operation, instead of the failure bridge arm being disconnected, realizes the redundancy running under fault condition.With bridge
For there is open-circuit fault in power tube Q9 and power tube Q10 in arm 5, as shown in figure 4, system controller disconnect power tube Q9 and
The driving signal of power tube Q10, control bidirectional thyristor TR6 conducting, will be used for the driving of power tube Q9 and power tube Q10 originally
Signal is respectively used to control power tube Q15 and power tube Q16, and bidirectional thyristor TR6 and bridge arm 8 is made to constitute the redundant electric of bridge arm 5
Road is put into operation, realizes faults-tolerant control.DC power supply is opened winding permanent magnet synchronous motor still through two inverter controls and is realized
As before driving function, motor performance indexes and failure generation.
Further, the both ends of bridge arm 1, bridge arm 2, bridge arm 3, bridge arm 5, bridge arm 6 and bridge arm 7 are provided with fuse, relate to
And to fuse have fuse F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11 and F12, in the present embodiment, this 12
A fuse is fastp-acting fuse.So, as shown in Figure 1, bridge arm 1 by fastp-acting fuse F1, power tube Q1, power tube Q2 and
Fastp-acting fuse F2 composition, bridge arm 2 are made of fastp-acting fuse F3, power tube Q3, power tube Q4 and fastp-acting fuse F4, bridge arm
3 are made of fastp-acting fuse F5, power tube Q5, power tube Q6 and fastp-acting fuse F6, and bridge arm 5 is by fastp-acting fuse F7, power
Pipe Q9, power tube Q10 and fastp-acting fuse F8 composition, bridge arm 6 is by fastp-acting fuse F9, power tube Q11, power tube Q12 and fast
Fast fuse F10 composition, bridge arm 7 are made of fastp-acting fuse F11, power tube Q13, power tube Q14 and fastp-acting fuse F12.
In this case, other than above-mentioned open-circuit fault, when bridge arm 1, bridge arm 2, bridge arm 3, bridge arm 5, bridge arm 6 and bridge arm 7
In one of power tube of a certain bridge arm when there is short trouble, on the complementary power pipe, the bridge arm on corresponding bridge arm
Two fuses are just formed into a loop with DC power supply, because overcurrent is blown, which is disconnected from the circuit two fuses, short
Road failure is automatically converted to open-circuit fault, and above-mentioned open-circuit fault of power tubes fault-tolerance approach is recycled to carry out faults-tolerant control.So bridge
Arm 1, bridge arm 2, bridge arm 3, bridge arm 5, bridge arm 6 and bridge arm 7 increase fuse, are used for when short trouble occurs for power tube, fastly
Corresponding bridge arm is disconnected from the circuit by speed, protects circuit other elements not to be damaged, and realize faults-tolerant control.
Therefore, fault-tolerant driving circuit structure provided in this embodiment is simple, drives in existing winding permanent magnet synchronous motor of opening
Modification is made on the basis of dynamic system, mainly increases power switch and redundancy bridge arm, although compared to traditional inversion electricity
Road does not do very big change in structure, and still, but very rationally, power device quantity and increased costs are limited, sexual valence for design
Relatively high, correspondingly control is safe and reliable.Furthermore, it is possible to effectively avoid the generation of common-mode voltage, zero-sequence current to electronic device
And the harm of motor.
Open winding three-phase electric system embodiment two
The present embodiment provides one kind to open winding three-phase electric system, including opens winding three-phase motor and fault-tolerant driving circuit,
The control object of fault-tolerant driving circuit is to open winding three-phase motor, and in the present embodiment, opening winding three-phase motor is specially to open winding
Permanent magnet synchronous motor, the three-phase motor winding for opening winding permanent magnet synchronous motor is mutually indepedent, respectively the first phase winding, second
Phase winding and third phase winding respectively correspond winding C, winding B and winding A in Fig. 5.
Fault-tolerant driving circuit includes direct current electrical interface and the first inverter circuit (hereinafter referred to as inverter 1) and the second inversion
Circuit (hereinafter referred to as inverter 2), the direct current electrical interface is for connecting DC power supply (such as Vehicular accumulator cell or power electric
Pond), which connects the DC side of inverter 1 and the DC side of inverter 2.
String is equipped with the first power switch, corresponding diagram 5 in connection line between direct current electrical interface and the DC side of inverter 1
In power switch K2, string is equipped with second source and switchs in the connection line between direct current electrical interface and the DC side of inverter 2,
Power switch K1 in corresponding diagram 5.
It is provided with redundancy bridge arm in inverter 1 or inverter 2, for ease of description, the present embodiment in inverter 1 to set
It is equipped with for redundancy bridge arm.So, inverter 1 includes the first bridge arm, the second bridge arm, third bridge arm and redundancy bridge arm, inverter 2
Including the 5th bridge arm, the 6th bridge arm and the 7th bridge arm, respectively correspond bridge arm 1 in Fig. 5, bridge arm 2, bridge arm 3, bridge arm 4, bridge arm 5,
Bridge arm 6 and bridge arm 7.Wherein, the anode of this seven bridge arms is connected with the anode of DC power supply, the cathode of this seven bridge arms it is equal with
The cathode of DC power supply is connected.First power tube, the second power tube, third power tube, the 4th power tube, the 5th power tube,
Six power tubes, the 7th power tube, the 8th power tube, the 9th power tube, the tenth power tube, the 11st power tube, the 12nd power
Pipe, the 13rd power tube and the 14th power tube respectively correspond power tube Q1, power tube Q2, power tube Q3, power tube in Fig. 5
Q4, power tube Q5, power tube Q6, power tube Q7, power tube Q8, power tube Q9, power tube Q10, power tube Q11, power tube
Q12, power tube Q13 and power tube Q14.In the present embodiment, for power tube Q1~Q14 by taking IGBT as an example, equal reverse parallel connection has body
Diode.
As shown in figure 5, string is equipped with power tube Q1 and power tube Q2 on bridge arm 1, string is equipped with power tube Q3 and power on bridge arm 2
Pipe Q4, string is equipped with power tube Q5 and power tube Q6 on bridge arm 3, and string is equipped with power tube Q7 and power tube Q8 on bridge arm 4, on bridge arm 5
String is equipped with power tube Q9 and power tube Q10, and string is equipped with power tube Q11 and power tube Q12 on bridge arm 6, and string is equipped with power on bridge arm 7
Pipe Q13 and power tube Q14.
The tie point of power tube Q1 and power tube Q2 and the tie point of power tube Q7 and power tube Q8 are opened by the first control
Connection connects, in the present embodiment, bidirectional thyristor TR3 in the first control switch corresponding diagram 5, and the company of power tube Q3 and power tube Q4
Contact is connect with the tie point of power tube Q7 and power tube Q8 by the second control switch, that is, passes through the bidirectional thyristor in Fig. 5
The tie point of TR2 connection, power tube Q5 and power tube Q6 are opened with the tie point of power tube Q7 and power tube Q8 by third control
Connection connects, that is, passes through the bidirectional thyristor TR1 connection in Fig. 5.Certainly, each control switch among the above can also be other types
Control switch, such as IGBT.
Power tube Q1 connects one end of winding C, the tie point of power tube Q3 and power tube Q4 with the tie point of power tube Q2
One end of winding B is connected, power tube Q5 connects one end of winding A, power tube Q9 and power tube Q10 with the tie point of power tube Q6
Tie point connection winding A the other end, power tube Q11 connects the other end of winding B, power with the tie point of power tube Q12
Pipe Q13 connects the other end of winding C with the tie point of power tube Q14, i.e., each tie point is separately connected the leading-out terminal of corresponding winding.
Certainly, in order to realize control, fault-tolerant driving circuit further includes control section, and certainly, which can also be
The control equipment that system there is originally, is not belonging to a part of the fault-tolerant driving circuit.In the present embodiment, control section is to be
System controller, wherein the grid of power tube Q1~Q14 is connected with system controller, is inputted triggering by system controller or is broken
Open driving signal, the control electrode of bidirectional thyristor TR1, TR2, TR3 are connected with system controller, by system controller input or
Break trigger signal.
In failure free operation, equivalent circuit is referred to shown in Fig. 2 circuit, only bridge arm 1, bridge arm 2, bridge arm 3, bridge
Arm 5, bridge arm 6 and bridge arm 7 are powered to motor three-phase windings A, B, C, and redundancy bridge arm and three bidirectional thyristors TR1, TR2, TR3 are not
Work, DC power supply open winding permanent magnet synchronous motor by two inverter controls and realize driving function.
When there is open-circuit fault in a certain bridge arm in bridge arm 1, bridge arm 2 and the bridge arm 3 in inverter 1, system controller
The driving signal of two power tubes in the failure bridge arm is disconnected, bidirectional thyristor conducting corresponding with the failure bridge arm is triggered,
Simultaneously by two power tubes in the corresponding control bridge arm 4 of the driving signal of failure bridge arm, by the bidirectional thyristor and bridge being triggered
The redundant circuit that arm 4 is constituted puts into operation, instead of the failure bridge arm being disconnected, realizes the redundancy running under fault condition.With bridge
For open-circuit fault occur in power tube Q1 and power tube Q2 in arm 1, equivalent circuit is referred to shown in Fig. 3, system controller
The driving signal of power tube Q1 and power tube Q2 are disconnected, control bidirectional thyristor TR3 conducting will be used for power tube Q1 and function originally
The driving signal of rate pipe Q2 is respectively used to control power tube Q7 and power tube Q8, and bidirectional thyristor TR3 and bridge arm 4 is made to constitute bridge arm
1 redundant circuit puts into operation, realizes faults-tolerant control.DC power supply is opened winding permanent magnet still through two inverter controls and is synchronized
Motor realizes driving function, and motor performance indexes is as before failure generation.
Further, the both ends of bridge arm 1, bridge arm 2, bridge arm 3, bridge arm 5, bridge arm 6 and bridge arm 7 are provided with fuse, relate to
And to fuse have fuse F1, F2, F3, F4, F5, F6, F7, F8, F9, F10, F11 and F12, in the present embodiment, this 12
A fuse is fastp-acting fuse.So, as shown in figure 5, bridge arm 1 by fastp-acting fuse F1, power tube Q1, power tube Q2 and
Fastp-acting fuse F2 composition, bridge arm 2 are made of fastp-acting fuse F3, power tube Q3, power tube Q4 and fastp-acting fuse F4, bridge arm
3 are made of fastp-acting fuse F5, power tube Q5, power tube Q6 and fastp-acting fuse F6, and bridge arm 5 is by fastp-acting fuse F7, power
Pipe Q9, power tube Q10 and fastp-acting fuse F8 composition, bridge arm 6 is by fastp-acting fuse F9, power tube Q11, power tube Q12 and fast
Fast fuse F10 composition, bridge arm 7 are made of fastp-acting fuse F11, power tube Q13, power tube Q14 and fastp-acting fuse F12.
In this case, other than above-mentioned open-circuit fault, when bridge arm 1, bridge arm 2, bridge arm 3, bridge arm 5, bridge arm 6 and bridge arm 7
In one of power tube of a certain bridge arm when there is short trouble, on the complementary power pipe, the bridge arm on corresponding bridge arm
Two fuses are just formed into a loop with DC power supply, because overcurrent is blown, which is disconnected from the circuit two fuses, short
Road failure is automatically converted to open-circuit fault.Further, when a certain bridge arm in bridge arm 1, bridge arm 2 and bridge arm 3 one of them
It is fault-tolerant using above-mentioned open-circuit fault of power tubes after short trouble is automatically converted to open-circuit fault when short trouble occurs in power tube
Method carries out faults-tolerant control.So bridge arm 1, bridge arm 2 and bridge arm 3 increase fuse, for short trouble to occur in power tube
When, quickly corresponding bridge arm is disconnected from the circuit, protects circuit other elements not to be damaged, and realize faults-tolerant control.
Specific embodiment is presented above, but the utility model is not limited to described embodiment.This is practical
Novel basic ideas are to be provided with power switch, therefore, inversion between inverter 1 and inverter 2 and direct current electrical interface
The circuit structure of device 1 and inverter 2 does not limit to above-mentioned two provided embodiment, as other embodiments, inversion
Redundancy bridge arm can also be not provided in device 1 and inverter 2.
Open winding three-phase motor fault-tolerant driving circuit embodiment one
The present embodiment provides one kind to open winding three-phase motor fault-tolerant driving circuit, which can individually protect
Shield, due to the fault-tolerant driving circuit it is above-mentioned open to have given in winding three-phase electric system embodiment one describe in detail, this
Embodiment just no longer illustrates.
Open winding three-phase motor fault-tolerant driving circuit embodiment two
The present embodiment provides one kind to open winding three-phase motor fault-tolerant driving circuit, which can individually protect
Shield, due to the fault-tolerant driving circuit it is above-mentioned open to have given in winding three-phase electric system embodiment two describe in detail, this
Embodiment just no longer illustrates.
Claims (10)
1. one kind opens winding three-phase motor fault-tolerant driving circuit, the application of the fault-tolerant driving circuit is to open winding three-phase electricity
Machine, the winding three-phase motor of opening is with the first phase winding, the second phase winding and third phase winding, the fault-tolerant driving circuit packet
Direct current electrical interface and the first inverter circuit and the second inverter circuit, the direct current electrical interface for connecting DC power supply is included to connect
The DC side of first inverter circuit and the DC side of the second inverter circuit are connect,
First inverter circuit include the first bridge arm, the second bridge arm and third bridge arm, the second inverter circuit include the 5th bridge arm,
6th bridge arm and the 7th bridge arm, string is equipped with the first power tube and the second power tube on first bridge arm, on second bridge arm
String is equipped with third power tube and the 4th power tube, and string is equipped with the 5th power tube and the 6th power tube on the third bridge arm, described
String is equipped with the 9th power tube and the tenth power tube on 5th bridge arm, and string is equipped with the 11st power tube and the tenth on the 6th bridge arm
Two power tubes, string is equipped with the 13rd power tube and the 14th power tube on the 7th bridge arm,
The tie point of first power tube and the second power tube is used to connect one end of first phase winding, the third function
The tie point of rate pipe and the 4th power tube is used to connect one end of second phase winding, the 5th power tube and the 6th power
The tie point of pipe is used to connect one end of the third phase winding, and the tie point of the 9th power tube and the tenth power tube is used for
Connect the other end of the third phase winding, the tie point of the 11st power tube and the 12nd power tube is described for connecting
The tie point of the other end of second phase winding, the 13rd power tube and the 14th power tube for connect first phase around
The other end of group,
It is equipped with it is characterized in that, being gone here and there in connection line between the direct current electrical interface and the DC side of first inverter circuit
First power switch, string is equipped with the in the connection line between the direct current electrical interface and the DC side of second inverter circuit
Two power switches.
2. according to claim 1 open winding three-phase motor fault-tolerant driving circuit, which is characterized in that the first inversion electricity
Road further includes the first redundancy bridge arm and/or second inverter circuit further includes the second redundancy bridge arm, the first redundancy bridge arm
Upper string is equipped with the 7th power tube and the 8th power tube, and string is equipped with the 15th power tube and the 16th function on the second redundancy bridge arm
Rate pipe,
The tie point of the tie point of first power tube and the second power tube and the 7th power tube and the 8th power tube is logical
Cross the connection of the first control switch, the tie point and the 7th power tube and the 8th function of the third power tube and the 4th power tube
The tie point of rate pipe is connected by the second control switch, the tie point and the described 7th of the 5th power tube and the 6th power tube
The tie point of power tube and the 8th power tube is connected by third control switch, the company of the 9th power tube and the tenth power tube
Contact is connect with the tie point of the 15th power tube and the 16th power tube by the 4th control switch, the 11st function
The tie point of the tie point of rate pipe and the 12nd power tube and the 15th power tube and the 16th power tube passes through the 5th control
System switch connection, the tie point and the 15th power tube and the 16th function of the 13rd power tube and the 14th power tube
The tie point of rate pipe is connected by the 6th control switch.
3. according to claim 1 or 2 open winding three-phase motor fault-tolerant driving circuit, which is characterized in that first bridge
Arm, the second bridge arm, third bridge arm, the 5th bridge arm, the 6th bridge arm and the 7th bridge arm both ends be provided with fuse.
4. according to claim 2 open winding three-phase motor fault-tolerant driving circuit, which is characterized in that first control is opened
Pass, the second control switch, third control switch, the 4th control switch, the 5th control switch and the 6th control switch are two-way
Thyristor.
5. according to claim 2 open winding three-phase motor fault-tolerant driving circuit, which is characterized in that first power
Pipe, the second power tube, third power tube, the 4th power tube, the 5th power tube, the 6th power tube, the 7th power tube, the 8th power
Pipe, the 9th power tube, the tenth power tube, the 11st power tube, the 12nd power tube, the 13rd power tube, the 14th power tube,
15th power tube and the 16th power tube are IGBT, and reverse parallel connection has corresponding diode.
6. one kind opens winding three-phase electric system, including opens winding three-phase motor and fault-tolerant driving circuit, described to open winding three-phase
Motor has the first phase winding, the second phase winding and third phase winding, and the fault-tolerant driving circuit includes for connecting direct current
The direct current electrical interface and the first inverter circuit in source and the second inverter circuit, the direct current electrical interface connect the first inversion electricity
The DC side of the DC side on road and the second inverter circuit,
First inverter circuit include the first bridge arm, the second bridge arm and third bridge arm, the second inverter circuit include the 5th bridge arm,
6th bridge arm and the 7th bridge arm, string is equipped with the first power tube and the second power tube on first bridge arm, on second bridge arm
String is equipped with third power tube and the 4th power tube, and string is equipped with the 5th power tube and the 6th power tube on the third bridge arm, described
String is equipped with the 9th power tube and the tenth power tube on 5th bridge arm, and string is equipped with the 11st power tube and the tenth on the 6th bridge arm
Two power tubes, string is equipped with the 13rd power tube and the 14th power tube on the 7th bridge arm,
The tie point of first power tube and the second power tube connects one end of first phase winding, the third power tube
One end of second phase winding, the connection of the 5th power tube and the 6th power tube are connected with the tie point of the 4th power tube
Point connects one end of the third phase winding, the tie point of the 9th power tube and the tenth power tube connect the third phase around
The tie point of the other end of group, the 11st power tube and the 12nd power tube connects the other end of second phase winding,
The tie point of 13rd power tube and the 14th power tube connects the other end of first phase winding,
It is equipped with it is characterized in that, being gone here and there in connection line between the direct current electrical interface and the DC side of first inverter circuit
First power switch, string is equipped with the in the connection line between the direct current electrical interface and the DC side of second inverter circuit
Two power switches.
7. according to claim 6 open winding three-phase electric system, which is characterized in that first inverter circuit further includes
First redundancy bridge arm and/or second inverter circuit further include the second redundancy bridge arm, go here and there and are equipped on the first redundancy bridge arm
7th power tube and the 8th power tube, string is equipped with the 15th power tube and the 16th power tube on the second redundancy bridge arm,
The tie point of the tie point of first power tube and the second power tube and the 7th power tube and the 8th power tube is logical
Cross the connection of the first control switch, the tie point and the 7th power tube and the 8th function of the third power tube and the 4th power tube
The tie point of rate pipe is connected by the second control switch, the tie point and the described 7th of the 5th power tube and the 6th power tube
The tie point of power tube and the 8th power tube is connected by third control switch, the company of the 9th power tube and the tenth power tube
Contact is connect with the tie point of the 15th power tube and the 16th power tube by the 4th control switch, the 11st function
The tie point of the tie point of rate pipe and the 12nd power tube and the 15th power tube and the 16th power tube passes through the 5th control
System switch connection, the tie point and the 15th power tube and the 16th function of the 13rd power tube and the 14th power tube
The tie point of rate pipe is connected by the 6th control switch.
8. according to claim 6 or 7 open winding three-phase electric system, which is characterized in that first bridge arm, the second bridge
Arm, third bridge arm, the 5th bridge arm, the 6th bridge arm and the 7th bridge arm both ends be provided with fuse.
9. according to claim 7 open winding three-phase electric system, which is characterized in that first control switch, second
Control switch, third control switch, the 4th control switch, the 5th control switch and the 6th control switch are bidirectional thyristor.
10. according to claim 7 open winding three-phase electric system, which is characterized in that first power tube, the second function
Rate pipe, third power tube, the 4th power tube, the 5th power tube, the 6th power tube, the 7th power tube, the 8th power tube, the 9th function
Rate pipe, the tenth power tube, the 11st power tube, the 12nd power tube, the 13rd power tube, the 14th power tube, the 15th function
Rate pipe and the 16th power tube are IGBT, and reverse parallel connection has corresponding diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821134421.3U CN208433927U (en) | 2018-07-17 | 2018-07-17 | One kind opening winding three-phase electric system and fault-tolerant driving circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821134421.3U CN208433927U (en) | 2018-07-17 | 2018-07-17 | One kind opening winding three-phase electric system and fault-tolerant driving circuit |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964573A (en) * | 2018-07-17 | 2018-12-07 | 河南森源重工有限公司 | Open winding three-phase electric system and fault-tolerant driving circuit |
| CN110962619A (en) * | 2019-10-30 | 2020-04-07 | 东南大学 | Semi-centralized open-winding primary permanent magnet direct current motor traction system for urban rail transit |
| CN112311266A (en) * | 2020-10-26 | 2021-02-02 | 中国矿业大学 | Fault-tolerant method for open-winding motor bridge arm fault of double three-level inverter topology |
-
2018
- 2018-07-17 CN CN201821134421.3U patent/CN208433927U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108964573A (en) * | 2018-07-17 | 2018-12-07 | 河南森源重工有限公司 | Open winding three-phase electric system and fault-tolerant driving circuit |
| CN110962619A (en) * | 2019-10-30 | 2020-04-07 | 东南大学 | Semi-centralized open-winding primary permanent magnet direct current motor traction system for urban rail transit |
| CN112311266A (en) * | 2020-10-26 | 2021-02-02 | 中国矿业大学 | Fault-tolerant method for open-winding motor bridge arm fault of double three-level inverter topology |
| CN112311266B (en) * | 2020-10-26 | 2022-05-20 | 中国矿业大学 | Fault-tolerant method for open-winding motor bridge arm fault of double three-level inverter topology |
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