CN107219844A - Power model startup self-detection method, device and storage medium - Google Patents
Power model startup self-detection method, device and storage medium Download PDFInfo
- Publication number
- CN107219844A CN107219844A CN201710474479.6A CN201710474479A CN107219844A CN 107219844 A CN107219844 A CN 107219844A CN 201710474479 A CN201710474479 A CN 201710474479A CN 107219844 A CN107219844 A CN 107219844A
- Authority
- CN
- China
- Prior art keywords
- bridge arm
- power tube
- power
- power model
- phase
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001514 detection method Methods 0.000 title claims abstract description 63
- 238000000034 method Methods 0.000 claims description 18
- 230000005611 electricity Effects 0.000 claims description 14
- 230000000052 comparative effect Effects 0.000 claims description 6
- 230000006870 function Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 238000007689 inspection Methods 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000019800 disodium phosphate Nutrition 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013024 troubleshooting Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B23/00—Testing or monitoring of control systems or parts thereof
- G05B23/02—Electric testing or monitoring
- G05B23/0205—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults
- G05B23/0208—Electric testing or monitoring by means of a monitoring system capable of detecting and responding to faults characterized by the configuration of the monitoring system
- G05B23/0213—Modular or universal configuration of the monitoring system, e.g. monitoring system having modules that may be combined to build monitoring program; monitoring system that can be applied to legacy systems; adaptable monitoring system; using different communication protocols
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/20—Pc systems
- G05B2219/24—Pc safety
- G05B2219/24065—Real time diagnostics
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Inverter Devices (AREA)
Abstract
The present invention discloses a kind of power model startup self-detection method, device and storage medium, wherein, power model startup self-detection method includes：Current value when upper bridge arm, lower bridge arm alternate conduction in each phase of power model is obtained respectively；The current value of acquisition and the current threshold of setting are compared, bridgc arm short is determined whether according to result of the comparison.Technical solution of the present invention improves the security of power model.
Description
Technical field
The present invention relates to motor-drive technique field, more particularly to a kind of power model startup self-detection method, device and deposit
Storage media.
Background technology
IPM (Intelligent Power Module, SPM) contains IGBT driving chips as one kind
And driving and the integrated power device of protection circuit of periphery, SPM, which has, switchs fast response time, the energy of resistance to load
Power is strong, the advantages of ideal base drive current is small.
The application of smart-power IC is ubiquitous, from family's electric lighting in daily life, family expenses and commercial frequency conversion
Air-conditioning, various consumption electronic products, to fields such as commercial Application control, robots, market is boundless.Three are integrated with IPM
Phase full-bridge inverting unit, occurs that during short circuit the damage of electromechanical equipment can be caused inside IPM, thus needs to open a way to IPM
Or the detection of short trouble.
Existing IPM relies on motor sample rate current for detection protection, if short circuit has inherently occurred in IPM before electricity on motor
Failure, then can not detect, i.e., can not realize to the self-checking function before electricity on IPM.
The content of the invention
The main object of the present invention is to provide a kind of power model startup self-detection method, it is intended to improve the safety of power model
Property.
To achieve the above object, power model startup self-detection method proposed by the present invention, including：
Current value when upper bridge arm, lower bridge arm alternate conduction in each phase of power model is obtained respectively；
The current value of acquisition and the current threshold of setting are compared, determine whether that bridge arm is short according to result of the comparison
Road.
Preferably, this method also includes：
The busbar voltage of power model is obtained, to applying predeterminated voltage at bridge arm in each phase, the tie point of lower bridge arm, is obtained
Upper bridge arm, the saturation voltage drop of lower bridge arm in each phase；
The voltage-to-ground at each tie point is obtained, voltage-to-ground is compared with the saturation voltage drop of corresponding upper bridge arm,
Judge whether each upper bridge arm opens a way according to comparative result；
The predeterminated voltage applied at each tie point is cancelled, default d shaft currents and default q shaft currents are applied to motor stator,
Controlled motor stator is located at the position that position angle differs predetermined angle respectively；
Each phase current values when power model is in diverse location angle are obtained respectively, and each lower bridge is judged according to preset rules
Whether arm opens a way.
Preferably, the power model is three phase power module, described " by the current value of acquisition and the current threshold of setting
It is compared, bridgc arm short is determined whether according to result of the comparison " include：
In same phase, when upper bridge arm is disconnected, lower bridge arm is turned on, if the current value obtained is more than predetermined current threshold,
Then judge upper bridgc arm short；If it is not, then judging that upper bridge arm is not short-circuit；
When the conducting of upper bridge arm, lower bridge arm disconnect, if the current value obtained is more than predetermined current threshold, lower bridge arm is judged
Short circuit；If it is not, then judging that lower bridge arm is not short-circuit.
It is preferably described " voltage-to-ground to be compared with the saturation voltage drop of corresponding upper bridge arm, sentenced according to comparative result
Whether each upper bridge arm that breaks opens a way " include：
Busbar voltage is subtracted into voltage-to-ground and obtains mid-point voltage, by saturation voltage drop of the mid-point voltage with corresponding upper bridge arm
It is compared, if mid-point voltage is less than the saturation voltage drop of corresponding upper bridge arm, judges that bridge arm is not opened a way on this；If it is not, then judging
Bridge arm is opened a way on this.
Preferably, the power model is three phase power module, and described " controlled motor stator is located at position angle and distinguishes phase
The position of poor predetermined angle " includes：
Controlled motor stator is sequentially located at 0 °, 120 ° and 240 ° three angle positions.
Preferably, the default d shaft currents are equal to motor stator electric current, and the default q shaft currents are zero.
Preferably, the power model is that bridge arm includes first in three phase power module, the first phase of the power model
Power tube, lower bridge arm includes the second power tube；Bridge arm includes the 3rd power tube, lower bridge arm bag in second phase of the power model
Include the 4th power tube；Bridge arm includes the 5th power tube on the third phase of the power model, and lower bridge arm includes the 6th power tube；Institute
The three-phase electricity flow valuve for stating acquisition is respectively Iu, Iv and Iw；Default d shaft currents are Is, described " to obtain power model respectively to be in not
Each phase current values during with position angle, judge whether each lower bridge arm opens a way according to preset rules " include：
If Iu=Is, Iv=Iw=-Is, then the first power tube, the 4th power tube and the 6th power tube are normal；
If Iu=Is, Iv=-Is, Iw=0, then the first power tube, the 4th power tube are normal, the 6th power tube open circuit；
If Iu=Is, Iv=0, Iw=-Is, then the first power tube, the 6th power tube are normal, the 4th power tube open circuit；
If Iv=Is, Iu=Iw=-Is, then the 3rd power tube, the second power tube and the 6th power tube are normal；
If Iv=Is, Iu=-Is, Iw=0, then the 3rd power tube, the second power tube are normal, the 6th power tube open circuit；
If Iv=Is, Iu=0, Iw=-Is, then the 3rd power tube, the 6th power tube are normal, the second power tube open circuit；
If Iw=Is, Iu=Iv=-Is, then the 5th power tube, the second power tube and the 6th power tube are normal；
If Iw=Is, Iu=-Is, Iv=0, then the 5th power tube, the second power tube are normal, the 6th power tube open circuit；
If then the 5th power tube, the 6th power tube are normal by Iw=Is, Iu=-0, Iv=-Is, the second power tube open circuit.
Preferably, the power model startup self-detection device includes memory, processor and is stored on the memory
And the control program for the power model startup self-detection method run on the processor, the power model startup self-detection method
Control program by the computing device when the step of realize method as described above.
The present invention proposes a kind of converter plant, and the converter plant is filled including power model startup self-detection as described above
Put.
The present invention also proposes to be stored with a kind of storage medium, the storage medium control of power model startup self-detection method
Processing procedure sequence, the power model startup self-detection method control program realizes that power model as described above is opened when being executed by processor
The step of machine self checking method.
The method that technical solution of the present invention is booted by using lower bridge arm or upper bridge arm is booted, opens bridge in same phase successively
Arm detects lower bridge arm, or opens lower bridge arm to detect upper bridge arm, and upper bridge arm, lower bridge arm in each phase of power model are obtained respectively and is handed over
Current value during for conducting, the current value of acquisition and the current threshold of setting are compared, so which specific bridge arm detected
Power tube there is short trouble.Technical solution of the present invention can be checked power model on motor before electricity, further
Improve the reliability and safety of power model.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the accompanying drawing used required in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Structure according to these accompanying drawings obtains other accompanying drawings.
Fig. 1 is a flow chart of the embodiment of power model startup self-detection method one of the present invention；
Fig. 2 is another flow chart of the embodiment of power model startup self-detection method one of the present invention；
Fig. 3 is the functional block diagram of the embodiment of converter plant one of the present invention；
Fig. 4 is the structural representation of the embodiments of IPM mono- of the present invention；
Fig. 5 is the flow chart of the embodiment of converter plant main program one of the present invention；
Fig. 6 is the flow chart of the embodiment of power model short-circuit detecting one of the present invention；
Fig. 7 detects a flow chart of an embodiment for the upper bridge arm open circuit of the present invention；
Fig. 8 be motor stator position angle of the present invention be 0 ° at present bridge arm open circuit detection one embodiment flow chart；
Fig. 9 be motor stator position angle of the present invention be 120 ° at present bridge arm open circuit detection one embodiment flow chart；
Figure 10 be motor stator position angle of the present invention be 240 ° at present bridge arm open circuit detection one embodiment flow chart.
The realization, functional characteristics and advantage of the object of the invention will be described further referring to the drawings in conjunction with the embodiments.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained under the premise of creative work is not made it is all its
His embodiment, belongs to the scope of protection of the invention.
It is to be appreciated that institute is directional in the embodiment of the present invention indicates that (such as up, down, left, right, before and after ...) is only used
In explaining relative position relation, motion conditions under a certain particular pose (as shown in drawings) between each part etc., if should
When particular pose changes, then directionality indicates also correspondingly therewith to change.
In addition, the description for being related to " first ", " second " etc. in the present invention is only used for describing purpose, and it is not intended that referring to
Show or imply its relative importance or the implicit quantity for indicating indicated technical characteristic.Thus, " first ", " are defined
At least one this feature can be expressed or be implicitly included to two " feature.In addition, the technical scheme between each embodiment can
To be combined with each other, but must can be implemented as basis with those of ordinary skill in the art, when the combination of technical scheme occurs
It is conflicting or when can not realize should people think that the combination of this technical scheme is not present, also not in the protection of application claims
Within the scope of.
The present invention proposes a kind of power model startup self-detection method.
Reference picture 1, in embodiments of the present invention, the power model startup self-detection method proposed by the present invention, including：
Current value in S100, respectively acquisition each phase of power model when upper bridge arm, lower bridge arm alternate conduction；
S200, the current threshold of the current value of acquisition and setting is compared, determined whether according to result of the comparison
Bridgc arm short.
It should be noted that in the present embodiment, the power model is included in the first phase, the second phase and third phase, the first phase
Including the first power tube and the second power tube, bridge arm and lower bridge arm are sequentially located at；Second phase includes the 3rd power tube and
Four power tubes, are sequentially located at bridge arm and lower bridge arm；Third phase includes the 5th power tube and the 6th power tube, is sequentially located at bridge
Arm and lower bridge arm.
In reference picture 4, the present embodiment, the first power tube to the 6th power tube be IGBT pipe, be followed successively by IGBT1~
IGBT6。
Upper electricity first sets the current threshold of hardware and software short circuit, sets current threshold to need to enter with reference to IPM databooks
Row simultaneously suitably stays a little surpluses.IGBT1 is opened successively to IGBT6 in a certain detection time afterwards, and only opens a power every time
Pipe, remaining power tube is closed.For example detect whether the IGBT2 of lower bridge arm is short-circuit, then opens the IGBT1 of bridge arm, and close
IGBT2~IGBT6, and judge whether the electric current for flowing through IGBT1 exceedes predetermined current threshold in the detection time for open IGBT1
Value, if occurring excessively stream, can determine that IGBT2 short circuits, turns failure function and handled.Remaining power tube short circuit judges identical, leads to
6 times are crossed as like judging, then can all judged whether IGBT1~IGBT6 is short-circuit successively.
The method that technical solution of the present invention is booted by using lower bridge arm or upper bridge arm is booted, opens bridge in same phase successively
Arm detects lower bridge arm, or opens lower bridge arm to detect upper bridge arm, and upper bridge arm, lower bridge arm in each phase of power model are obtained respectively and is handed over
Current value during for conducting, the current value of acquisition and the current threshold of setting are compared, so which specific bridge arm detected
Power tube there is short trouble.Technical solution of the present invention can be checked power model on motor before electricity, further
Improve the reliability and safety of power model.
Further, reference picture 2, this method also includes：
S300, the busbar voltage for obtaining power model, to applying default electricity at bridge arm in each phase, the tie point of lower bridge arm
Pressure, obtains upper bridge arm, the saturation voltage drop of lower bridge arm in each phase；
Voltage-to-ground at S400, each tie point of acquisition, voltage-to-ground is carried out with the saturation voltage drop of corresponding upper bridge arm
Compare, judge whether each upper bridge arm opens a way according to comparative result；
The predeterminated voltage applied at S500, each tie point of revocation, default d shaft currents and default q axles are applied to motor stator
Electric current, controlled motor stator is located at the position that position angle differs predetermined angle respectively；
S600, respectively acquisition power model are in each phase current values during diverse location angle, are judged according to preset rules
Whether each lower bridge arm opens a way.
What deserves to be explained is, in step S300, in this implementation, the power model includes the first phase, the second phase and the 3rd
Phase, is respectively Vun, Vvn to applying predeterminated voltage at the first phase, the upper bridge arm of the second phase and third phase, the tie point of lower bridge arm
And Vwn.
Such as to judge whether IGBT1 opens a way, busbar voltage Vpn is obtained first, then in IGBT1 detection times, apply one
Determine Vun, Vvn, Vwn voltage, form it into using IGBT1 as the loop of detection, such as loop：Bus P → IGBT1 → PMSM →
IGBT4 and IGBT6 → bus N etc., and Vpu is during this period of time detected, if Vpu≤Vcesat, illustrate that IGBT1 has been opened
It is logical；If IGBT1 does not open a way, otherwise illustrate that IGBT1 has opened a way, it is necessary to turn to failure function processing.Can according to same principle
Judge whether IGBT3, IGBT5 open a way.
Whether opened a way for IGBT2, IGBT4 and IGBT6 of other lower bridge arm, then adopt and judged with the following method：
Cancel again it is corresponding apply voltage, control rotor position angle be respectively α=0 °, 120 ° with 240 °, and apply corresponding
Two-phase equivalent rotary coordinate system in Id and Iq value, and control Id=Is, Iq=0.Wherein Id, Iq are without position vector control
DC quantity in system in equivalent coordinate transform, here Is be PMSM (permanent magnet synchronous motor,
Permagnetic synchronous motor) stator current, need exist for the peak inrush current for controlling Is to be necessarily less than PMSM.
It is DC current due to what is be passed through, therefore can not produce now equivalent to DC current has been passed through in machine winding
The magnetic field of rotation, but constant impulsive magnetic field can be still produced, rotor goes to respective angles according to stator current vector synthesis, according to
Principle detects the open circuit situation of lower bridge arm accordingly.
Specifically, the power model is three phase power module, described " by the current value of acquisition and the current threshold of setting
It is compared, bridgc arm short is determined whether according to result of the comparison " include：
In same phase, when upper bridge arm is disconnected, lower bridge arm is turned on, if the current value obtained is more than predetermined current threshold,
Then judge upper bridgc arm short；If it is not, then judging that upper bridge arm is not short-circuit；
When the conducting of upper bridge arm, lower bridge arm disconnect, if the current value obtained is more than predetermined current threshold, lower bridge arm is judged
Short circuit；If it is not, then judging that lower bridge arm is not short-circuit.
Specifically, it is described " voltage-to-ground to be compared with the saturation voltage drop of corresponding upper bridge arm, sentenced according to comparative result
Whether each upper bridge arm that breaks opens a way " include：
Busbar voltage is subtracted into voltage-to-ground and obtains mid-point voltage, by saturation voltage drop of the mid-point voltage with corresponding upper bridge arm
It is compared, if mid-point voltage is less than the saturation voltage drop of corresponding upper bridge arm, judges that bridge arm is not opened a way on this；If it is not, then judging
Bridge arm is opened a way on this.
Specifically, the power model is three phase power module, and described " controlled motor stator is located at position angle and distinguishes phase
The position of poor predetermined angle " includes：
Controlled motor stator is sequentially located at 0 °, 120 ° and 240 ° three angle positions.
Specifically, the default d shaft currents are equal to motor stator electric current, and the default q shaft currents are zero.
Specifically, the power model is that bridge arm includes first in three phase power module, the first phase of the power model
Power tube, lower bridge arm includes the second power tube；Bridge arm includes the 3rd power tube, lower bridge arm bag in second phase of the power model
Include the 4th power tube；Bridge arm includes the 5th power tube on the third phase of the power model, and lower bridge arm includes the 6th power tube；Institute
The three-phase electricity flow valuve for stating acquisition is respectively Iu, Iv and Iw；Default d shaft currents are Is, described " to obtain power model respectively to be in not
Each phase current values during with position angle, judge whether each lower bridge arm opens a way according to preset rules " include：
(1) if Iu=Is, Iv=Iw=-Is, then the first power tube, the 4th power tube and the 6th power tube are normal；
(2) if Iu=Is, Iv=-Is, Iw=0, then the first power tube, the 4th power tube are normal, the 6th power tube open circuit；
(3) if Iu=Is, Iv=0, Iw=-Is, then the first power tube, the 6th power tube are normal, the 4th power tube open circuit；
(4) if Iv=Is, Iu=Iw=-Is, then the 3rd power tube, the second power tube and the 6th power tube are normal；
(5) if Iv=Is, Iu=-Is, Iw=0, then the 3rd power tube, the second power tube are normal, the 6th power tube open circuit；
(6) if Iv=Is, Iu=0, Iw=-Is, then the 3rd power tube, the 6th power tube are normal, the second power tube open circuit；
(7) if Iw=Is, Iu=Iv=-Is, then the 5th power tube, the second power tube and the 6th power tube are normal；
(8) if Iw=Is, Iu=-Is, Iv=0, then the 5th power tube, the second power tube are normal, the 6th power tube open circuit；
(9) if then the 5th power tube, the 6th power tube are normal by Iw=Is, Iu=-0, Iv=-Is, the second power tube open circuit.
It should be noted that apply rotating coordinate system under Id=Is, Iq=0 and control rotor position angle α=0 °,
120 ° can judge inside IPM with detecting Iu, Iv, Iw electric current under 240 °, and according to the comprehensive progress judgement in above-listed (1)~(9)
Open fault occurs for which power device in which specific bridge arm.
The motor three-phase electricity flow point situation that technical solution of the present invention is obtained according to detection is judged.Now three-phase electricity stray arrow
Amount is respectively in synthesis on 0 °, 120 ° of directions with 240 °.At α=0 °, electric current is through bus P → IGBT1 → IGBT4, IGBT6
→ bus N loops, if IGBT1, IGBT4, IGBT6 are normal, meet：Iu=Is, Iv=Iw=-Is, Iv and Iw amplitude are remote
Much larger than 1 ampere.U phase currents are met for motor stator electric current, V, W phase current are opposite with U phase currents.
Therefore, if Iu=Is, Iv=0, Iw=-Is, then it may determine that IGBT4 opens a way；If Iu=Is, Iv=-Is, Iw=
0, then it may determine that IGBT6 opens a way.Therefore software need to only detect that above-mentioned 3 kinds of situations can judge lower bridge IGBT4, IGBT6 work(
The quality of rate pipe.It is similarly 120 ° of judgements similar to 240 ° of progress to angle of rotor of motor position, you can judge that all lower bridges are
No open circuit is normal.
The present invention proposes a kind of power model startup self-detection device, and the power model startup self-detection device includes storage
Device, processor and the control for being stored in the power model startup self-detection method run on the memory and on the processor
Program, method as described above is realized when the control program of the power model startup self-detection method is by the computing device
Step.
The present invention also proposes a kind of converter plant, and the converter plant includes power model startup self-detection device, the theme one
Concrete structure with reference to above-described embodiment, because this theme two employs whole technical schemes of above-mentioned all embodiments, therefore
All beneficial effects that at least technical scheme with above-described embodiment is brought, this is no longer going to repeat them.
Reference picture 3, in the present embodiment, the converter plant are applied on air conditioner.The converter plant includes rectifier bridge (not
Sign), soft circuit (not indicating), controller 10, busbar voltage detection module 30, current of electric sampling module 20, driving mould
Block 50 and fault detection module 40.Wherein, resistance R1 and switch K1 constitute soft circuit.Controller uses control chip
TMS320F28 series DSPs are realized.Busbar voltage detection module is detected to busbar voltage PN.Current of electric sampling module pair
PMSM biphase current is sampled.The six road pwm control signals that drive module is used to export controller carry out power amplification
After export to IPM.Electric capacity C1 and electric capacity C2 is charging electrolytic capacitor filter in figure, and R2, R3 are its busbar voltage equalizer circuit.
IPM and PSPM composition inversion major loops.
In summary, the main program of PMSM vector control without position sensor systems is further elaborated in conjunction with Fig. 5：
After system start-up according to it is following when sort run：
S101, system electrification self-inspection；
S102, judge whether self-inspection completes, if not completing, be back to S101, if completing, carry out S103 parameter acquirings；
S104, after necessary parameter is obtained, into initial latency；
S105, progress communication standby；
Whether S106, real-time judge receive host computer start-up command, and step S105 is back to if not receiving, if receiving
To then into next step；
S107, PMSM soft start；
S108~S116 judges whether to break down, and carries out troubleshooting.
Further, reference picture 6, the short-circuit detecting to power tube in the present invention is illustrated：
In S201, the present embodiment, enter short-circuit detecting pattern in, first setting electric current threshold value Isc, obtain busbar voltage and
Threshold value Vcesat after power tube conducting；
S202, into short-circuit Auto-Sensing Mode, current value during each phase power tube alternate conduction is obtained successively；
S203, judge obtain current value whether be more than setting current threshold Isc；
S204, if so, then can determine that short trouble occurs for which power tube of that bridge arm；
S205, if it is not, then judging whether short-circuit Auto-Sensing Mode completes, if not completing, return and continue to judge；If completing,
Then enter open circuit detection pattern.
When carrying out open circuit detection, reference picture 7 is first carried out to IGBT1, IGBT3 and IGBT5 of the upper bridge arm of power model
Detection.Here, with reference to step S301~S309, successively to apply at the tie point of each upper and lower bridge arm of power model voltage Vun,
Vvn and Vwn, and corresponding mid-point voltage Vpu, Vpv and Vpw are obtained, Vpu, Vpv and Vpw are carried out with corresponding saturation voltage drop
Compare, so as to judge whether IGBT1, IGBT3 and IGBT5 open a way.
Open a way and judge for IGBT2, IGBT4 and IGBT6 of lower bridge arm, then reference picture 8, Fig. 9 and Figure 10, Fig. 8, Fig. 9 and
Figure 10 is illustrated respectively in estimate of situation of the rotor when position angle is respectively 0 °, 120 degree and 240 °.
With reference to step S401~S407, Equivalent DC component is applied to the stator of motor here, d shaft currents are Id=Is,
Here Is is equal to rotor electric current；Q shaft currents are zero.By being detected to motor three-phase current Iu, Iv and Iw, by with
Preset rules are compared judgement, you can judge IGBT2, IGBT4 and IGBT6 open circuit situation.
After the detection for completing 0 ° of position angle judges, then the detection judgement of 120 ° of position angles is carried out, with reference to step
S501~S507, judges similar, here is omitted with the detection of 0 ° of position angle here.
Finally, with reference to step S601~S607, carry out detection when position angle is 240 ° and judge.Complete all positions
After the judgement of angle, self-inspection is exited.
Technology of the present invention there is provided IPM module failure self-checking functions before a kind of upper electricity, for IPM module short circuits and
Open fault, carries out different detection methods, and in short trouble, the method for carrying out lower bridge arm bootstrapping or the bootstrapping of upper bridge arm is open-minded
The lower bridge arm of bridge arm detection in whole, or open all lower upper bridge arms of bridge arm detection, and being carried out to each power tube of IPM modules
It is progressively open-minded, so which specific power tube short trouble detected；And open-circuit failure, with reference to motor phase failure detection, bus electricity
The comprehensive descision of pressure sampling, rotor position angle and motor stator electric current draws the specific device of IPM module open faults, this hair
One of the power-on self-test IPM functions of modules specific supplement of bright technical scheme not only to the frequency conversion application systems of application IPM modules
It is perfect, a kind of detection protection scheme is also provided to the after-market product of module containing IPM, while also to application IPM module manufacturers test
IPM modules provide the method for testing software that a kind of IPM modules enter factory, great application and popularization value.
The present invention also proposes to be stored with a kind of storage medium, the storage medium control of power model startup self-detection method
Processing procedure sequence, the power model startup self-detection method control program realizes that power model as described above is opened when being executed by processor
The step of machine self checking method.
Through the above description of the embodiments, those skilled in the art can be understood that above-described embodiment side
Method can add the mode of required general hardware platform to realize by software, naturally it is also possible to by hardware, but in many cases
The former is more preferably embodiment.Understood based on such, technical scheme is substantially done to prior art in other words
Going out the part of contribution can be embodied in the form of software product, and the computer software product is stored in one as described above
In storage medium (such as ROM/RAM, magnetic disc, CD), including some instructions to cause a station terminal equipment (can be mobile phone,
Computer, server, air conditioner, or network equipment etc.) perform method described in each of the invention embodiment.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the scope of the invention, it is every at this
Under the inventive concept of invention, the equivalent structure transformation made using description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical fields in the scope of patent protection of the present invention.
Claims (10)
1. a kind of power model startup self-detection method, it is characterised in that including：
Current value when upper bridge arm, lower bridge arm alternate conduction in each phase of power model is obtained respectively；
The current value of acquisition and the current threshold of setting are compared, bridgc arm short is determined whether according to result of the comparison.
2. power model startup self-detection method as claimed in claim 1, the power model is three phase power module, its feature
It is, it is described " current value of acquisition and the current threshold of setting to be compared, bridge arm is determined whether according to result of the comparison
Short circuit " includes：
In same phase, when upper bridge arm is disconnected, lower bridge arm is turned on, if the current value obtained is more than predetermined current threshold, sentence
Disconnected upper bridgc arm short；If it is not, then judging that upper bridge arm is not short-circuit；
When the conducting of upper bridge arm, lower bridge arm disconnect, if the current value obtained is more than predetermined current threshold, judge that lower bridge arm is short
Road；If it is not, then judging that lower bridge arm is not short-circuit.
3. power model startup self-detection method as claimed in claim 1, it is characterised in that this method also includes：
The busbar voltage of power model is obtained, to applying predeterminated voltage at bridge arm in each phase, the tie point of lower bridge arm, each phase is obtained
In upper bridge arm, the saturation voltage drop of lower bridge arm；
The voltage-to-ground at each tie point is obtained, voltage-to-ground is compared with the saturation voltage drop of corresponding upper bridge arm, foundation
Comparative result judges whether each upper bridge arm opens a way；
The predeterminated voltage applied at each tie point is cancelled, applies default d shaft currents and default q shaft currents, control to motor stator
Motor stator is located at the position that position angle differs predetermined angle respectively；
Each phase current values when power model is in diverse location angle are obtained respectively, judge that each lower bridge arm is according to preset rules
No open circuit.
4. power model startup self-detection method as claimed in claim 3, it is characterised in that it is described " by voltage-to-ground with it is corresponding
The saturation voltage drop of upper bridge arm be compared, judge whether each upper bridge arm opens a way according to comparative result " include：
Busbar voltage is subtracted into voltage-to-ground and obtains mid-point voltage, mid-point voltage is carried out with the saturation voltage drop of corresponding upper bridge arm
Compare, if mid-point voltage is less than the saturation voltage drop of corresponding upper bridge arm, judge that bridge arm is not opened a way on this；If it is not, then judging on this
Bridge arm is opened a way.
5. power model startup self-detection method as claimed in claim 3, it is characterised in that the power model is three phase power
Module, " controlled motor stator is located at the position that position angle differs predetermined angle respectively " includes：
Controlled motor stator is sequentially located at 0 °, 120 ° and 240 ° three angle positions.
6. power model startup self-detection method as claimed in claim 3, it is characterised in that the default d shaft currents are equal to electricity
Machine stator electric current, the default q shaft currents are zero.
7. power model startup self-detection method as claimed in claim 3, the power model is three phase power module, the work(
Bridge arm includes the first power tube in first phase of rate module, and lower bridge arm includes the second power tube；Second phase of the power model
Upper bridge arm includes the 3rd power tube, and lower bridge arm includes the 4th power tube；Bridge arm includes the 5th on the third phase of the power model
Power tube, lower bridge arm includes the 6th power tube；The three-phase electricity flow valuve of the acquisition is respectively Iu, Iv and Iw；Presetting d shaft currents is
Is, it is characterised in that described " each phase current values when power model is in diverse location angle to be obtained respectively, according to default rule
Then judge whether each lower bridge arm opens a way " include：
If Iu=Is, Iv=Iw=-Is, then the first power tube, the 4th power tube and the 6th power tube are normal；
If Iu=Is, Iv=-Is, Iw=0, then the first power tube, the 4th power tube are normal, the 6th power tube open circuit；
If Iu=Is, Iv=0, Iw=-Is, then the first power tube, the 6th power tube are normal, the 4th power tube open circuit；
If Iv=Is, Iu=Iw=-Is, then the 3rd power tube, the second power tube and the 6th power tube are normal；
If Iv=Is, Iu=-Is, Iw=0, then the 3rd power tube, the second power tube are normal, the 6th power tube open circuit；
If Iv=Is, Iu=0, Iw=-Is, then the 3rd power tube, the 6th power tube are normal, the second power tube open circuit；
If Iw=Is, Iu=Iv=-Is, then the 5th power tube, the second power tube and the 6th power tube are normal；
If Iw=Is, Iu=-Is, Iv=0, then the 5th power tube, the second power tube are normal, the 6th power tube open circuit；
If then the 5th power tube, the 6th power tube are normal by Iw=Is, Iu=-0, Iv=-Is, the second power tube open circuit.
8. a kind of power model startup self-detection device, it is characterised in that the power model startup self-detection device include memory,
Processor and the control journey for being stored in the power model startup self-detection method run on the memory and on the processor
Sequence, the control program of the power model startup self-detection method is realized during the computing device as appointed in claim 1 to 7
The step of method described in one.
9. a kind of converter plant, it is characterised in that the converter plant includes power model as claimed in claim 8 start certainly
Checking device.
10. a kind of storage medium, it is characterised in that the control for the power model startup self-detection method that is stored with the storage medium
Program, is realized when the control program of the power model startup self-detection method is executed by processor as any in claim 1 to 7
Described in power model startup self-detection method the step of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474479.6A CN107219844B (en) | 2017-06-20 | 2017-06-20 | Power module power-on self-test method, device and storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710474479.6A CN107219844B (en) | 2017-06-20 | 2017-06-20 | Power module power-on self-test method, device and storage medium |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107219844A true CN107219844A (en) | 2017-09-29 |
| CN107219844B CN107219844B (en) | 2020-03-17 |
Family
ID=59950326
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710474479.6A Active CN107219844B (en) | 2017-06-20 | 2017-06-20 | Power module power-on self-test method, device and storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107219844B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655703A (en) * | 2018-12-30 | 2019-04-19 | 北京天诚同创电气有限公司 | Self checking method, device, equipment and the storage medium of parallel power module |
| CN110108997A (en) * | 2019-04-09 | 2019-08-09 | 上海奇电电气科技股份有限公司 | A kind of frequency converter self checking method |
| CN110780142A (en) * | 2019-11-15 | 2020-02-11 | 广州仪速安电子科技有限公司 | Starting-up early warning method in instrument operation process |
| CN111707918A (en) * | 2020-06-22 | 2020-09-25 | 卧龙电气驱动集团股份有限公司 | Self-integration driving detection method and device of motor control system for air-conditioning fan |
| CN112034385A (en) * | 2020-08-05 | 2020-12-04 | 苏州汇川联合动力***有限公司 | Motor system fault detection method, device and computer readable storage medium |
| CN114421851A (en) * | 2021-11-26 | 2022-04-29 | 浙江宇视科技有限公司 | Method, device, equipment and medium for detecting abnormal rotation of gate |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08308252A (en) * | 1995-05-11 | 1996-11-22 | Toshiba Corp | Power converter |
| CN101078747A (en) * | 2007-06-29 | 2007-11-28 | 南京航空航天大学 | Double salient-pole motor drive power tube fault diagnosis method |
| JP2008029060A (en) * | 2006-07-18 | 2008-02-07 | Mitsubishi Electric Corp | Semiconductor device |
| CN101201391A (en) * | 2007-12-11 | 2008-06-18 | 天津大学 | Running state display and fault on-line diagnosis circuit for inverter |
| CN101382585A (en) * | 2007-09-07 | 2009-03-11 | 比亚迪股份有限公司 | Test method, apparatus and generator for inverter in generator |
| CN102986116A (en) * | 2010-07-14 | 2013-03-20 | 株式会社丰田自动织机 | Rotating element with embedded permanent magnet and rotating electrical machine |
| CN103078526A (en) * | 2013-01-08 | 2013-05-01 | 广东志成冠军集团有限公司 | Current source type rectifier and grid-connected control method based on virtual resistor |
| CN103884930A (en) * | 2014-03-04 | 2014-06-25 | 王金全 | Full bridge uncontrolled rectifier fault diagnosis method based on insulation monitoring |
| CN103941114A (en) * | 2014-01-22 | 2014-07-23 | 上海大郡动力控制技术有限公司 | Self-detection method for power module and current sensors of vehicle-used permanent-magnet synchronous motor system |
| CN104122479A (en) * | 2014-07-29 | 2014-10-29 | 华中科技大学 | Online detection method for open-circuit faults of power tubes of induction-motor vector control system |
| CN104298221A (en) * | 2013-12-13 | 2015-01-21 | 郑州宇通客车股份有限公司 | Three-phase full-bridge switch circuit fault detection method and device |
| CN104779584A (en) * | 2014-01-14 | 2015-07-15 | 易泰帝传动技术(烟台)有限公司 | Frequency changer detection protection circuit |
| CN105024622A (en) * | 2015-08-16 | 2015-11-04 | 石成富 | Intelligent control method of electrically-driven motor |
| CN105021936A (en) * | 2014-04-25 | 2015-11-04 | 青岛海信日立空调***有限公司 | Method and electric device for detecting electric leakage |
| CN106019056A (en) * | 2016-06-23 | 2016-10-12 | 华中科技大学 | Method for detecting three-phase rectifier power tube open circuit fault in real time |
-
2017
- 2017-06-20 CN CN201710474479.6A patent/CN107219844B/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08308252A (en) * | 1995-05-11 | 1996-11-22 | Toshiba Corp | Power converter |
| JP2008029060A (en) * | 2006-07-18 | 2008-02-07 | Mitsubishi Electric Corp | Semiconductor device |
| CN101078747A (en) * | 2007-06-29 | 2007-11-28 | 南京航空航天大学 | Double salient-pole motor drive power tube fault diagnosis method |
| CN101382585A (en) * | 2007-09-07 | 2009-03-11 | 比亚迪股份有限公司 | Test method, apparatus and generator for inverter in generator |
| CN101201391A (en) * | 2007-12-11 | 2008-06-18 | 天津大学 | Running state display and fault on-line diagnosis circuit for inverter |
| CN102986116A (en) * | 2010-07-14 | 2013-03-20 | 株式会社丰田自动织机 | Rotating element with embedded permanent magnet and rotating electrical machine |
| CN103078526A (en) * | 2013-01-08 | 2013-05-01 | 广东志成冠军集团有限公司 | Current source type rectifier and grid-connected control method based on virtual resistor |
| CN104298221A (en) * | 2013-12-13 | 2015-01-21 | 郑州宇通客车股份有限公司 | Three-phase full-bridge switch circuit fault detection method and device |
| CN104779584A (en) * | 2014-01-14 | 2015-07-15 | 易泰帝传动技术(烟台)有限公司 | Frequency changer detection protection circuit |
| CN103941114A (en) * | 2014-01-22 | 2014-07-23 | 上海大郡动力控制技术有限公司 | Self-detection method for power module and current sensors of vehicle-used permanent-magnet synchronous motor system |
| CN103884930A (en) * | 2014-03-04 | 2014-06-25 | 王金全 | Full bridge uncontrolled rectifier fault diagnosis method based on insulation monitoring |
| CN105021936A (en) * | 2014-04-25 | 2015-11-04 | 青岛海信日立空调***有限公司 | Method and electric device for detecting electric leakage |
| CN104122479A (en) * | 2014-07-29 | 2014-10-29 | 华中科技大学 | Online detection method for open-circuit faults of power tubes of induction-motor vector control system |
| CN105024622A (en) * | 2015-08-16 | 2015-11-04 | 石成富 | Intelligent control method of electrically-driven motor |
| CN106019056A (en) * | 2016-06-23 | 2016-10-12 | 华中科技大学 | Method for detecting three-phase rectifier power tube open circuit fault in real time |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109655703A (en) * | 2018-12-30 | 2019-04-19 | 北京天诚同创电气有限公司 | Self checking method, device, equipment and the storage medium of parallel power module |
| CN110108997A (en) * | 2019-04-09 | 2019-08-09 | 上海奇电电气科技股份有限公司 | A kind of frequency converter self checking method |
| CN110780142A (en) * | 2019-11-15 | 2020-02-11 | 广州仪速安电子科技有限公司 | Starting-up early warning method in instrument operation process |
| CN111707918A (en) * | 2020-06-22 | 2020-09-25 | 卧龙电气驱动集团股份有限公司 | Self-integration driving detection method and device of motor control system for air-conditioning fan |
| CN111707918B (en) * | 2020-06-22 | 2023-09-08 | 卧龙电气驱动集团股份有限公司 | Self-integrated driving detection method and device for motor control system for air conditioner fan |
| CN112034385A (en) * | 2020-08-05 | 2020-12-04 | 苏州汇川联合动力***有限公司 | Motor system fault detection method, device and computer readable storage medium |
| CN112034385B (en) * | 2020-08-05 | 2023-10-27 | 苏州汇川联合动力***股份有限公司 | Motor system fault detection method, apparatus and computer readable storage medium |
| CN114421851A (en) * | 2021-11-26 | 2022-04-29 | 浙江宇视科技有限公司 | Method, device, equipment and medium for detecting abnormal rotation of gate |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107219844B (en) | 2020-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107219844A (en) | Power model startup self-detection method, device and storage medium | |
| CN104597370B (en) | The detection method of the modularization multi-level converter IGBT open faults based on state observer | |
| CN104298221B (en) | Three phase full bridge on-off circuit fault detection method and device | |
| CN103941114B (en) | The self checking method of automobile permanent magnet synchronous motor system power module and current sensor | |
| CN104155564B (en) | Brushless direct-current motor inverter single tube open-circuit fault diagnosing and positioning method | |
| CN110518680B (en) | Control circuit and control method compatible with three-phase and single-phase multiple wire system power supplies | |
| CN108242903A (en) | The control method and control system of permanent-magnet synchronous motor rotor position angle | |
| CN110297182A (en) | It is a kind of to simulate the power electronics load system for opening winding permanent magnet synchronous motor | |
| CN109870639A (en) | One kind opening winding electric drive converter system switching tube open-circuit fault diagnostic method | |
| CN109655703B (en) | Self-checking method, device and equipment for parallel power modules and storage medium | |
| JP5300349B2 (en) | Motor control device and motor ground fault detection method | |
| Estima et al. | Fast fault detection, isolation and reconfiguration in fault-tolerant permanent magnet synchronous motor drives | |
| CN211086524U (en) | Relay sampling detection circuit of grid-connected inverter | |
| CN110869778B (en) | Phase sequence detection method of three-phase power grid and related device | |
| CN104111420B (en) | The method for detecting open phase and direct current motor system of direct current motor system | |
| Li et al. | Diagnosis of open-phase fault of five-phase permanent magnet synchronous motor by harmonic current analysis | |
| CN106712628A (en) | Current closed-loop starting method of sensorless brushless DC motor | |
| CN106026845A (en) | Fan driving device, air conditioning system and fan driving method thereof | |
| CN112448458B (en) | Fault processing method, system and storage medium thereof | |
| CN104113239B (en) | Detection method of direct-current motor system and direct-current motor system | |
| CN102638217A (en) | Method for calibrating parameters of motor controller without position sensor | |
| CN110311619A (en) | A kind of circuit for controlling motor and electric car | |
| US11926229B2 (en) | Charging device and method of control of the same | |
| CN105827131B (en) | A kind of more level modules in parallel inverters and its startup self-detection method | |
| CN109001630B (en) | High-voltage synchronous motor testing device and testing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |