CN107681950A - A kind of highly reliable high efficiency control driver based on three-level topology - Google Patents
A kind of highly reliable high efficiency control driver based on three-level topology Download PDFInfo
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- CN107681950A CN107681950A CN201710719978.7A CN201710719978A CN107681950A CN 107681950 A CN107681950 A CN 107681950A CN 201710719978 A CN201710719978 A CN 201710719978A CN 107681950 A CN107681950 A CN 107681950A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
- H02P27/06—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage using dc to ac converters or inverters
Abstract
The present invention relates to a kind of highly reliable high efficiency based on three-level topology to control driver, including T-shaped three-phase drive bridge, bus Support Capacitor, 6 switches；Combined by the Different Logic of switch, the isomery electrical combination form of the former T-shaped circuit topology of selection, so as to form new three-phase bridge topology, reach the purpose of control three phase electric machine.When failure detector circuit detects dependent failure, under the different gating combination of switching tube, T-shaped circuit topology can be switched to conventional three-phase full-bridge circuit topology, so remain able to realize the three phase full bridge control of motor.To than three conventional level redundant topology structures, in course of normal operation, quantity of the present invention without increase switching tube, failover is convenient, control mode is flexible, the feature-rich of system, reliability are high, without system loss is increased on the premise of system low noise is ensured, ensure the high efficiency of system, it is noiseless, and hardware cost increase is few.
Description
Technical field
The present invention relates to a kind of highly reliable high efficiency based on three-level topology to control driver, belongs to field of drivers.
Background technology
T-shaped three-level topology has low harmony wave and efficient characteristic, to reducing the vibration in motor operation course and making an uproar
Sound has more obvious effect, gradually of interest by people at present.Currently in actual applications, it is also less to consider that its is reliable
Property.With reference to Fig. 1, after having an IGBT switching tube to break down, control driver can only be shut down, and influence the reliability of product.
In recent years the research of three level redundant topology structures has been related to, but has which increased the number of IGBT switching tubes, in work
Loss is increased during work, influences to control the efficiency of driver.How not increase switching tube and not influence to control driver
On the basis of operating efficiency, the reliability of driver work is improved, is this area technical problem urgently to be resolved hurrily.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of based on three level modified topological structures
Highly reliable control driver, on the basis of IGBT switching tube numbers are not increased, IGBT state can be monitored in real time, ensureing system
Unite low noise, it is efficient simultaneously, by less hardware modifications, add the reliability of system.
The object of the invention is achieved by following technical solution：
A kind of control driver topological structure based on three-level topology, including the support of T-shaped three-phase drive bridge, bus are provided
Electric capacity, 6 switches；
T-shaped three-phase drive bridge by power source bus DC inverter into exchange electric drive three phase electric machine；
Bus Support Capacitor includes the second bus Support Capacitor and triple bus-bar Support Capacitor, through first after the two series connection
Switch is connected in parallel on both ends of power；
Second switch is in parallel with the second bus Support Capacitor, and the 3rd switch is in parallel with triple bus-bar Support Capacitor, and the 4th opens
Connection is connected between the positive pole of the second bus Support Capacitor and the power supply positive input terminal of T-shaped three-phase drive bridge, the 5th switch connection
Between the negative pole of triple bus-bar Support Capacitor and the power supply negative input end of T-shaped three-phase drive bridge；One end connection of 6th switch
Between the second bus Support Capacitor and triple bus-bar Support Capacitor, the other end is connected to the reset terminal of T-shaped three-phase drive bridge.
Preferably, T-shaped three-phase drive bridge includes 3 structure identical actuating arms, and each actuating arm includes 4 IGBT and switched
Pipe, the structure of i-th of actuating arm are as follows：One end of first IGBT switching tubes is as power supply positive input terminal, other end connection the 4th
One end of IGBT switching tubes, the other ends of the 4th IGBT switching tubes as power supply negative input end, the first IGBT switching tubes it is another
End is also connected with the i-th phase of three phase electric machine；2nd IGBT switching tubes one end is connected to the i-th phase of three phase electric machine, the 2nd IGBT switches
The other end of pipe connects one end of the 3rd IGBT switching tubes, and the other end of the 3rd IGBT switching tubes is as T-shaped three-phase drive bridge
Reset terminal, i 1,2 or 3.
Preferably, during normal work, the governor circuit control of the highly reliable high efficiency control driver based on three-level topology
First switch processed, the 4th switch, the 5th switch, the 6th switch closure, other are switched off.
Preferably, when judging that a phase or multiphase actuating arm first switch pipe break down, governor circuit control second is opened
Close and close, the 4th switch OFF, the 3rd switching tube of three-phase is set to full opening mode；
When judging that a phase or the switching tube of multiphase actuating arm the 4th break down, the switch closure of governor circuit control the 3rd,
5th switch OFF, the second switch pipe of three-phase is set to full opening mode；
When judging that one or more of second switch pipe or the 3rd switching tube break down, governor circuit control the 6th
Switch off.
Simultaneously supply a kind of control driver based on three-level topology, driver topological structure include T-shaped three-phase drive bridge,
Bus Support Capacitor, 6 switches；
T-shaped three-phase drive bridge inverse of the DC into AC drives three phase electric machine；
Bus Support Capacitor includes the second bus Support Capacitor and triple bus-bar Support Capacitor, is opened after the two series connection through first
Pass is connected in parallel on both ends of power；
Second switch is in parallel with the second bus Support Capacitor, and the 3rd switch is in parallel with triple bus-bar Support Capacitor, and the 4th opens
Connection is connected between the positive pole of the second bus Support Capacitor and the power supply positive input terminal of T-shaped three-phase drive bridge, the 5th switch connection
Between the negative pole of triple bus-bar Support Capacitor and the power supply negative input end of T-shaped three-phase drive bridge；One end connection of 6th switch
Between the second bus Support Capacitor and triple bus-bar Support Capacitor, the other end is connected to the reset terminal of T-shaped three-phase drive bridge.
Preferably, in addition to failure detector circuit, failure detector circuit include detecting voltage by three phase unit and master control list
Member, voltage detection unit, for detect motor per mutually with the second bus Support Capacitor and triple bus-bar Support Capacitor tie point it
Between voltage as motor per phase input voltage and being sent to main control unit；Main control unit receives three-phase voltage, and judges whether
Break down and abort situation.
Preferably, main control unit judges whether to break down and fault location methods are as follows：
When T-shaped three-phase drive bridge is normal, motor per phase input voltage be -0.5UDC, 0,0.5UDC be alternately present, when
When the input voltage of i-th phase does not have 0.5UDC, judge that the first IGBT switching tubes break down in the actuating arm of the phase；When the i-th phase
Input voltage without 0 voltage when, judge the actuating arm of the phase second or the 3rd IGBT switching tubes break down；When the i-th phase
When entering out voltage and there is no -0.5UDC, judge that the 4th IGBT switching tubes break down in the actuating arm of the phase, UDC is that power supply is female
Line DC voltage.
Preferably, when judging that a phase or multiphase actuating arm first switch pipe break down, governor circuit control second is opened
Close and close, the 4th switch OFF, the 3rd switching tube of three-phase is set to full opening mode；
When judging that a phase or the switching tube of multiphase actuating arm the 4th break down, the switch closure of governor circuit control the 3rd,
5th switch OFF, the second switch pipe of three-phase is set to full opening mode；
When judging that one or more of second switch pipe or the 3rd switching tube break down, governor circuit control the 6th
Switch off.
Preferably, main control unit uses dsp chip.
Preferably, in addition to the first bus Support Capacitor, both ends of power is connected in parallel on by first switch.
The present invention has the following advantages that compared with prior art：
(1) 6 switches are used only in the present invention, you can realize fault recovery, do not increase the quantity of switching tube, failover
Conveniently, control mode is flexible, and the feature-rich of system, reliability are high.
(2) to than three conventional level redundant topology structures, in course of normal operation, the present invention is ensureing system low noise
Property on the premise of without increase system loss, ensure the high efficiency of system, it is noiseless, and hardware cost increase is few.
(3) present invention monitors the working condition of each phase bridge arm in three-level topology in real time, and observation circuit is simple, determination methods
It is easily achieved, the critical component in control driver is effectively monitored, improves the reliability of control driver.
Brief description of the drawings
Fig. 1 is existing three-level control principle topological structure schematic diagram；
Fig. 2 is the three-level control principle topological structure schematic diagram of the present invention；
Fig. 3 is the control algolithm flow chart of the present invention.
Embodiment
The present invention provides a kind of highly reliable high efficiency control driver topological structure based on three-level topology, for T-shaped
Three level drivers of topological structure, are improved, and are switched by increasing, and form fault recovery loop, to realize fault recovery,
Its reliability is provided.
With reference to Fig. 2, control driver topology includes T-shaped three-phase drive bridge, 3 bus Support Capacitors, six switches, T-shaped
Three-phase drive bridge uses existing T-shaped three-phase drive bridge structure, and inverse of the DC into AC driving three phase electric machine, first is female
Line Support Capacitor C1 provides power supply, the second bus branch by first switch T15 and power sources in parallel for T-shaped three-phase drive bridge structure
Support, second switch T13 and second in parallel with the first bus Support Capacitor C1 after electric capacity C2 and triple bus-bar Support Capacitor C3 connects
Bus Support Capacitor C2 is in parallel, and the 3rd switch T14 is in parallel with triple bus-bar Support Capacitor C3, and the 4th switch T16 is connected to second
Between the power supply positive input terminal of bus Support Capacitor C2 positive pole and T-shaped three-phase drive bridge, it is female that the 5th switch T17 is connected to the 3rd
Between the power supply negative input end of line Support Capacitor C3 negative pole and T-shaped three-phase drive bridge；6th switch T18 one end is connected to the
Between two bus Support Capacitor C2 and triple bus-bar Support Capacitor C3, the other end is connected to the reset terminal of T-shaped three-phase drive bridge.
T-shaped three-phase drive bridge includes 12 IGBT switching tubes, and three-phase drive bridge includes 3 structure identical actuating arms, often
Individual actuating arm includes 4 IGBT switching tubes, and the i-th of motor is connected i-th of actuating arm, and the structure of i-th of actuating arm is as follows, and
One end of one IGBT switching tubes (T1, T5, T9) as power supply positive input terminal, the other end connect the 4th IGBT switching tubes (T4, T8,
T12 one end), the other end of the 4th IGBT switching tubes (T4, T8, T12) is as power supply negative input end, the first IGBT switching tubes
The other end of (T1, T5, T9) is also connected with the i-th phase of three phase electric machine；2nd IGBT switching tubes (T2, T6, T10) one end is connected to three
I-th phase of phase motor, the other end of the 2nd IGBT switching tubes (T2, T6, T10) connect the 3rd IGBT switching tubes (T3, T7, T11)
One end, the reset terminal of the other ends of the 3rd IGBT switching tubes (T3, T7, T11) as T-shaped three-phase drive bridge, i 1,2 or
3。
During normal work, governor circuit control first switch T15, the 4th switch T16, the 5th switch T17, the 6th switch
T18 is closed, and other are switched off.
The present invention also sets up failure detector circuit, and the partial circuit mainly goes out circuit by the detecting voltage by three phase of motor
Current working condition.Such as there is operation irregularity situation, by the signal detected, control chip is patrolled according to pre-designed
Volume, it can be determined that be out of order particular location of the switching tube in circuit topology, then makes relevant action, is opened up by control circuit
The turn-on and turn-off of several switches in flutterring, corresponding circuit topology isomery is made, so as to ensure dc bus being reverse into three-phase
Alternating voltage, reach the purpose of controlled motor；
Failure detector circuit includes detecting voltage by three phase unit U13, U14, U15 and main control unit.U13, U14, U15 are
Detecting voltage by three phase unit, it is respectively used to detect the voltage (electricity between a certain phase of motor and C2, C3 tie point of motor three-phase
Pressure) and it is sent to main control unit.When T-shaped Topology Driven circuit malfunctions, each fault detection part can detect phase rapidly
The running status that circuit is current is answered, then communicates information to DSP, after DSP detects malfunction, further according to its inside journey
Sequence logic makes fault diagnosis.Main control unit determination methods are as follows, when T-shaped three-phase drive bridge is normal, U13, U14, U15 output
Be -0.5UDC, 0,0.5UDC (UDC is power rail voltage) be alternately present, when the voltage detecting of the i-th phase does not have 0.5UDC
When, show that the first IGBT switching tubes break down in the actuating arm of the phase；When the voltage detecting of the i-th phase is without 0 voltage, show
In the actuating arm of the phase second or the 3rd IGBT switching tubes break down；When the voltage detecting of the i-th phase does not have -0.5UDC, table
The 4th IGBT switching tubes break down in the actuating arm of the bright phase.Switched under three of the above fault mode by switching, Ke Yishi
Existing fault recovery, continue to drive three phase electric machine.If voltage only has a kind of state, fault recovery can not be realized.
As shown in figure 3, after governor circuit detects the information state that fault detection unit is sent.Performed in program
Each cycle period in can carry out logic analysis and judgement to the status information of failure.
The processing method of main control unit fault recovery is as follows：
When judging that a phase or multiphase actuating arm first switch pipe break down, second switch T13 is closed, the 4th switch
T16 is turned off, and the 3rd switch transistor T 3 of three-phase, T7, T11 accordingly now are set into full opening mode.At this moment, by T2, T6, T10,
T4, T8, T12 form two level topological structures and continue work；When judging that a phase or the switching tube of multiphase actuating arm the 4th occur
During failure, the 3rd switch T14 closures, will now set second switch pipe T2, T6, T10 of three-phase the 5th switch T17 shut-offs
For full opening mode.At this moment, two level topological structures are formed by T3, T7, T11, T1, T5, T9 and continues work.When judging a phase
Or one or more of multiphase actuating arm second switch pipe or the 3rd switching tube disconnect the 6th switch T18 when breaking down,
Typical two level topological structures are formed by T1, T5, T9, T4, T8, T12 to be controlled.So, by control T13, T14, T16,
T17, T18 realize the conversion of circuit, and three-level topology is changed into two level topology, ensured when breaking down, control driving
Device still can normal work, ensure motor operation.Even if drive circuit failure is excessive, controller can also stop motor operating in time
Guarantee personnel and rear end equipment safety.
Main control unit using possesses hardware check survey high-speed dsp, it possesses abundant I/O mouths, can realize power supply, when
The Autonomous test of the links such as clock, phaselocked loop, CPU, RAM, Flash, peripheral module internal memory, register read-write, AD.Main control unit foundation
The sequential that three level SVPWM algorithms calculate, complete the break-make of power switch pipe.So as to which DC bus-bar voltage is reverse into three-phase
Alternating voltage, realize the purpose of controlled motor three-phase current.
Combined by the Different Logic of five switches of T13, T14, T16, T17, T18, the isomery of the former T-shaped circuit topology of selection
Electrical combination form, so as to form new three-phase bridge topology, reach the purpose of control three phase electric machine.When failure detector circuit is examined
When measuring dependent failure, under the different gating combination of switching tube, T-shaped circuit topology can be switched to conventional three-phase full-bridge electricity
Road topology, so remain able to realize the three phase full bridge control of motor.If detect that fault mode can not be cut by circuit
The normal operation for realizing motor is changed, control unit can be shut down in time, and first switch T15 disconnects, support personnel and rear end equipment peace
Entirely.
In the course of work, when some circuitry phase breaks down, main control unit is in switch switching or is responsible for stopping in motor
While operating, fault message is passed into main control unit, realizes Fault Isolation.
It is described above, it is only the optimal embodiment of the present invention, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can readily occur in,
It should all be included within the scope of the present invention.
The content not being described in detail in description of the invention belongs to the known technology of professional and technical personnel in the field.
Claims (10)
1. a kind of control driver topological structure based on three-level topology, it is characterised in that including T-shaped three-phase drive bridge, mother
Line Support Capacitor and multiple switch；
T-shaped three-phase drive bridge by power source bus DC inverter into exchange electric drive three phase electric machine；
Bus Support Capacitor includes the second bus Support Capacitor (C2) and triple bus-bar Support Capacitor (C3), is being passed through after the two series connection
First switch (T15) is connected in parallel on both ends of power；
Second switch (T13) is in parallel with the second bus Support Capacitor (C2), the 3rd switch (T14) and triple bus-bar Support Capacitor
(C3) in parallel, the 4th switch (T16) is being connected to the power supply of the positive pole of the second bus Support Capacitor (C2) and T-shaped three-phase drive bridge just
Between input, the 5th switch (T17) is connected to the negative pole of triple bus-bar Support Capacitor (C3) and the power supply of T-shaped three-phase drive bridge
Between negative input end；One end of 6th switch (T18) is connected to the second bus Support Capacitor (C2) and triple bus-bar Support Capacitor
(C3) between, the other end is connected to the reset terminal of T-shaped three-phase drive bridge.
2. the control driver topological structure based on three-level topology as claimed in claim 1, it is characterised in that T-shaped three-phase
Drive axle includes 3 structure identical actuating arms, and each actuating arm includes 4 IGBT switching tubes, and the structure of i-th of actuating arm is such as
Under：One end of first IGBT switching tubes (T1, T5, T9) connects the 4th IGBT switching tubes as power supply positive input terminal, the other end
The one end of (T4, T8, T12), the other end of the 4th IGBT switching tubes (T4, T8, T12) is as power supply negative input end, the first IGBT
The other end of switching tube (T1, T5, T9) is also connected with the i-th phase of three phase electric machine；2nd IGBT switching tubes (T2, T6, T10) one end connects
Be connected on the i-th phase of three phase electric machine, the other ends of the 2nd IGBT switching tubes (T2, T6, T10) connect the 3rd IGBT switching tubes (T3,
T7, T11) one end, the reset terminal of the other ends of the 3rd IGBT switching tubes (T3, T7, T11) as T-shaped three-phase drive bridge, i
For 1,2 or 3.
3. the control driver topological structure based on three-level topology as claimed in claim 1 or 2, it is characterised in that normal
During work, the governor circuit control first switch (T15) of the highly reliable high efficiency control driver based on three-level topology, the 4th
(T16), the 5th switch (T17), the 6th switch (T18) closure are switched, other are switched off.
4. the control driver topological structure based on three-level topology as claimed in claim 3, it is characterised in that：
When judging that a phase or multiphase actuating arm first switch pipe break down, governor circuit control second switch (T13) closure,
4th switch (T16) shut-off, full opening mode is set to by the 3rd switching tube of three-phase；
When judging that a phase or the switching tube of multiphase actuating arm the 4th break down, switch (T14) closure of governor circuit control the 3rd,
5th switch (T17) shut-off, full opening mode is set to by the second switch pipe of three-phase；
When judging that one or more of second switch pipe or the 3rd switching tube break down, the switch of governor circuit control the 6th
(T18) disconnect.
5. a kind of control driver based on three-level topology, it is characterised in that driver topological structure includes T-shaped three-phase drive
Bridge, bus Support Capacitor and multiple switch；
T-shaped three-phase drive bridge inverse of the DC into AC drives three phase electric machine；
Bus Support Capacitor includes the second bus Support Capacitor (C2) and triple bus-bar Support Capacitor (C3), through the after the two series connection
One switch (T15) is connected in parallel on both ends of power；
Second switch (T13) is in parallel with the second bus Support Capacitor (C2), the 3rd switch (T14) and triple bus-bar Support Capacitor
(C3) in parallel, the 4th switch (T16) is being connected to the power supply of the positive pole of the second bus Support Capacitor (C2) and T-shaped three-phase drive bridge just
Between input, the 5th switch (T17) is connected to the negative pole of triple bus-bar Support Capacitor (C3) and the power supply of T-shaped three-phase drive bridge
Between negative input end；One end of 6th switch (T18) is connected to the second bus Support Capacitor (C2) and triple bus-bar Support Capacitor
(C3) between, the other end is connected to the reset terminal of T-shaped three-phase drive bridge.
6. the control driver based on three-level topology as claimed in claim 5, it is characterised in that also including fault detect electricity
Road, failure detector circuit include detecting voltage by three phase unit and main control unit, voltage detection unit, for detecting motor per phase
Voltage between the second bus Support Capacitor (C2) and triple bus-bar Support Capacitor (C3) tie point is as motor per mutually input
Voltage is simultaneously sent to main control unit；Main control unit receives three-phase voltage, and judges whether to break down and abort situation.
7. the control driver based on three-level topology as described in claim 5 or 6, it is characterised in that main control unit judges
Whether break down and fault location methods are as follows：
When T-shaped three-phase drive bridge is normal, motor per phase input voltage be -0.5UDC, 0,0.5UDC be alternately present, when i-th
When the input voltage of phase does not have 0.5UDC, judge that the first IGBT switching tubes break down in the actuating arm of the phase；It is defeated when the i-th phase
Enter voltage without 0 voltage when, judge the actuating arm of the phase second or the 3rd IGBT switching tubes break down；When entering for the i-th phase
When going out voltage does not have -0.5UDC, judge that the 4th IGBT switching tubes break down in the actuating arm of the phase, UDC is that power source bus is straight
Flow piezoelectric voltage.
8. the control driver based on three-level topology as claimed in claim 7, it is characterised in that
When judging that a phase or multiphase actuating arm first switch pipe break down, governor circuit control second switch (T13) closure,
4th switch (T16) shut-off, full opening mode is set to by the 3rd switching tube of three-phase；
When judging that a phase or the switching tube of multiphase actuating arm the 4th break down, switch (T14) closure of governor circuit control the 3rd,
5th switch (T17) shut-off, full opening mode is set to by the second switch pipe of three-phase；
When judging that one or more of second switch pipe or the 3rd switching tube break down, the switch of governor circuit control the 6th
(T18) disconnect.
9. the control driver based on three-level topology as described in claim 5 or 6, it is characterised in that main control unit uses
Dsp chip.
10. the control driver topological structure based on three-level topology as claimed in claim 1 or 2, and claim 5 or
The control driver of the highly reliable high efficiency based on three-level topology described in 6, it is characterised in that also support electricity including the first bus
Hold (C1), both ends of power is connected in parallel on by first switch (T15).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710719978.7A CN107681950B (en) | 2017-08-21 | 2017-08-21 | High-reliability and high-efficiency control driver based on three-level topology |
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| CN201710719978.7A CN107681950B (en) | 2017-08-21 | 2017-08-21 | High-reliability and high-efficiency control driver based on three-level topology |
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| CN107681950B CN107681950B (en) | 2020-07-14 |
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| WO2023237100A1 (en) * | 2022-06-10 | 2023-12-14 | 势加透博洁净动力如皋有限公司 | Topological circuit system for hybrid device drive motor |
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| Publication number | Publication date |
|---|---|
| CN107681950B (en) | 2020-07-14 |
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