CN206004543U - Power amplifier device - Google Patents
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- CN206004543U CN206004543U CN201620964350.4U CN201620964350U CN206004543U CN 206004543 U CN206004543 U CN 206004543U CN 201620964350 U CN201620964350 U CN 201620964350U CN 206004543 U CN206004543 U CN 206004543U
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Abstract
This utility model is related to electric and electronic technical field, discloses a kind of power amplifier device.This power amplifier device includes analog side convertor circuit, dc bus circuit and the mains side convertor circuit being sequentially connected；Analog side convertor circuit adopts the many brachium pontis of common DC bus and filter reactance parallel connection topological structure, and controls driving means to carry out power and be connected with tested motor；When power grade during power amplifier device work is less than predetermined power, mains side convertor circuit adopts two level three-phase half-bridge unsteady flow topological structure；When power grade during power amplifier device work is more than or equal to predetermined power, the topological structure of mains side convertor circuit is consistent with the topological structure of analog side convertor circuit.Which enhance the control bandwidth of power amplifier device, improve the ability of the tested motor control driving means adapting to different technologies characteristic, practical, can also be cost-effective.
Description
Technical field
This utility model is related to electric and electronic technical field, particularly to a kind of power amplifier device.
Background technology
Motor is a kind of to realize mechanical energy and the device of electric energy mutually conversion with electromagnetic field for medium.According to energy conversion
Direction difference is divided into motor (being converted into mechanical energy by electric energy) and electromotor (being converted to electric energy by mechanical energy) both
Mode of operation, can be divided into electric rotating machine and linear electric motors according to mechanical movement form is different again, present document relates to be electric rotating machine,
Carried motor is also electric rotating machine hereinafter.
The operating characteristic of motor, in addition to relevant with its body parameter and technique, is also mainly determined by control driving means
Fixed.Different application field is different to the technical requirements of motor control driving means, in general mainly has following side
Face：1) excellent torque control performance；2) broad speed adjustable range；3) the high-efficiency operation region of wide scope；4) high power is close
Degree；5) excellent environmental suitability and the feature of environmental protection；6) high reliability.Above-mentioned in order to ensure that motor control driving means disclosure satisfy that
A variety of technical requirements, need to carry out substantial amounts of testing experiment to it in principle prototype research and development and product test stage.
Tradition is typically carried out to the test of motor control driving means by the way of motor is to drag platform frame, wherein one electricity
Machine controls the controlled device of driving means connected as tested motor, another coaxial motor be used for analog mechanical load or
Energy source, is simultaneously connected with the measurement that dynamometer machine carries out mechanical parameter.The advantage of this testing scheme is that motor is in kind, can
The more real operating characteristic of reaction, measuring accuracy is higher.But there is following point：1) machinery of motor bench high-speed rotation
There is certain potential safety hazard in part；2) it is difficult to limiting condition and the test of various failure condition；3) analog mechanical is loaded
Motor control characteristic requirements very high；4) it is difficult to flexibly change testing of electric motors type and parameter.
For the problems referred to above, a kind of survey Ji Yu hardware in loop (Hardware In the Loop, referred to as " HIL ") concept
Examination scheme is suggested.The program utilizes high sDeed real-time digital replicating machine quick sampling to be derived from the control signal of electric machine controller, and
Carry out the real-time resolving of the mathematical model of motor driver and motor body as input, then the motor calculating is electric
Gas and mechanical parameter return to electric machine controller, thus forming a complete closed-loop control system.Test side Ji Yu " HIL "
The advantages of case has flexible and efficient, measurement condition scope is wide.But due to only only having the control section of motor control driving means
I.e. electric machine controller is material object, and the motor driver directly carrying out Power Exchange with motor is then to be deposited in the form of mathematical model
It is in real time simulator, so this testing scheme is sufficiently complete, also need additionally to carry out for motor control driving
The test job of the power drive part (i.e. motor driver) of device.
If the motor electric external characteristics parameter calculating high sDeed real-time digital replicating machine can bidirectional flow by a power
Dynamic power amplifier device carries out power amplification, controls on the power interface of driving means in power amplifier device and tested motor
Producing voltage and/or the electric current of actual size, being achieved that the simulation of the electric external characteristics of motor of power stage, thus possessing to electricity
Machine controls driving means to carry out the function of complete power stage test, and the program is also called power hardware in ring (Power
Hardware In the Loop, referred to as " PHIL ") test.Testing scheme Ji Yu " PHIL " inherits " HIL " testing scheme
Flexible and efficient advantage, the test of signal level can only be carried out from " HIL " testing scheme simultaneously and be extended to and can carry out power stage
Test so that the scope of test is wider, result more accurately and reliably.
Although " PHIL " testing scheme of motor control driving means has a lot of advantages in theory, but answer actual
With in, its accuracy and effectiveness can be limited by power amplifier device performance to a great extent.Involved in prior art
And " PHIL " testing scheme in power amplifier device control bandwidth little, to tested motor control driving means adaptability
Difference is it is impossible to the tested motor adapting to different technologies characteristic controls driving means, and then leads to practicality poor.
Utility model content
The purpose of this utility model embodiment is to provide a kind of power amplifier device, improves power amplifier device
Control bandwidth, improves the ability of the tested motor control driving means adapting to different technologies characteristic, practical, can also save
About cost.
For solving above-mentioned technical problem, embodiment of the present utility model provides a kind of power amplifier device, including：Mould
Intend side convertor circuit, dc bus circuit and mains side convertor circuit；
Described analog side convertor circuit is connected with described mains side convertor circuit through described dc bus circuit；
Described analog side convertor circuit adopt the many brachium pontis of common DC bus and filter reactance parallel connection topological structure, and with tested
Motor control driving means carry out power connection；Wherein, described analog side convertor circuit includes input filter, parallel filtering electricity
Sense and three-phase two level parallel brachium pontis；Described input filter is through described parallel filtering inductance and described three-phase two level parallel bridge
Arm connects；Described input filter is LC structure, and described parallel filtering inductance side is electric capacity, described three-phase two level parallel brachium pontis
Formed in DC side parallel by 3n brachium pontis, each mutually respectively have n brachium pontis, wherein n is more than or equal to 2；In every brachium pontis
The equal series filtering inductance of point, with described input filter equivalent composition LCL type wave filter jointly after split-phase parallel connection；Described three-phase two
Switch in level parallel brachium pontis is power electronics wholly-controled device；
When power grade during described power amplifier device work is less than predetermined power, described mains side convertor circuit adopts
Two level three-phase half-bridge unsteady flow topological structure, described mains side convertor circuit include corresponding to respectively three-phase 3 two level brachium pontis,
Grid-connected wave filter, grid-connected switch and the mains side Variable flow control unit being connected with every phase brachium pontis midpoint, described grid-connected wave filter
For L-type filter inductance, or it is LCL type wave filter；
When power grade during described power amplifier device work is more than or equal to described predetermined power, described mains side
The topological structure of convertor circuit is consistent wherein with the topological structure of described analog side convertor circuit.
In terms of existing technologies, in power amplifier device, analog side convertor circuit adopts this utility model embodiment
The many brachium pontis of common DC bus and filter reactance parallel connection topological structure, reduce the equivalent output impedance of analog side convertor circuit thus
Improve the control bandwidth of power amplifier device；Meanwhile, by adopting LCL type wave filter in analog side convertor circuit, it is to avoid
Power amplifier device and tested motor control driving means to there may be to the collision problem in the control of same branch current, thus
Improve the adaptability that power amplifier device controls driving means to the tested motor of various technical characteristics, practical；This
Outward, mains side convertor circuit carries out two-way flow control to power, realizes energy feedback, as such, it is possible to cost-effective.
In addition, described input filter includes 3 equivalent capacitys, the connection triangular in shape of described 3 equivalent capacitys, or be in
Star-like connection, every described equivalent capacity is made up of single or many capacitor connection in series-parallel.
In addition, described dc bus circuit includes：Dc-link capacitance, leadage circuit and soft starting circuit；Described direct current
Bus capacitor is connected in parallel on dc bus two ends；Described leadage circuit is connected in parallel on described dc-link capacitance two ends, for completing
The energy storing after test assignment or on DC voltage more dc-link capacitance described in time-release is discharged；Described soft starting circuit string
It is associated on the dc bus being in described dc-link capacitance mains side, for limiting the charging current of described dc-link capacitance
In preset range.As such, it is possible to make power amplifier device work safer, reliable.
In addition, described leadage circuit is made up of with bleeder resistance the switch of releasing connected.
In addition, described soft starting circuit is made up of soft start switch in parallel and soft start resistance.
In addition, the switch in described three-phase two level parallel brachium pontis includes anti-paralleled diode.
Brief description
Fig. 1 is to drive test based on power hardware in the motor control of ring according in this utility model one better embodiment
System block diagram；
Fig. 2 is the structural representation according to power amplifier device in this utility model one better embodiment；
Fig. 3 is the electrical block diagram according to power amplifier device in this utility model one better embodiment；
Fig. 4 is the starting up's method flow diagram according to power amplifier device in this utility model one better embodiment；
Fig. 5 be according to the operation of power amplifier device in this utility model one better embodiment with exit method flow
Figure.
Specific embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, new to this practicality below in conjunction with accompanying drawing
Each embodiment of type is explained in detail.However, it is it will be understood by those skilled in the art that each in this utility model
In embodiment, in order that reader more fully understands that the application proposes many ins and outs.But, even if there is no these skills
Art details and the many variations based on following embodiment and modification are it is also possible to realize the application technical side required for protection
Case.
The power amplifier device that this utility model embodiment is related to can apply to as shown in Figure 1 based on power hardware
Drive in test scene in the motor control of ring (PHIL).Wherein, motor control drives test system by host computer, real-time simulation
Machine and power amplifier device composition.Wherein host computer is used for carrying out treating type and the parameter setting of simulated machine, test case
Editor, management and configuration, and the monitoring of testing process.Real-time simulation machine is used for the mould carrying out motor and rotor-position detection
Type resolves, the actual execution of responsible test case, and the location parameter of generation is sent to motor control by signal level interface and drives
Controller in device, the current reference value of generation is issued to power amplifier device as order.Power amplifier device receives
From the current of electric reference value signal of real-time simulation machine, and the power being connected with motor driver is controlled to connect by power electronics
The actual current of equivalence is produced on mouth, realizes the simulation to the electric external characteristics of motor.
As shown in Fig. 2 the power amplifier device in this utility model embodiment includes power main circuit and controls protection
Circuit two parts.Described power main circuit includes：Analog side convertor circuit, dc bus circuit and mains side convertor circuit；
Analog side convertor circuit is connected with mains side convertor circuit through dc bus circuit.Described control protection electric circuit includes analog side
Control circuit, mains side control circuit, DC side control circuit, protection circuit and communication interface circuit.When switching power is put
When big device normally runs, each several part of power main circuit all by corresponding control circuit be controlled, when fault is detected
Situation occurs, then obtain control unification by protection circuit and carry out protection process.Power supply is used for as power with accessory power supply
Amplifying device is powered.
The control protection electric circuit of power amplifier device can adopt digital circuit, and its kernel control chip can be selected for counting
Word signal processor (DSP), or ARM (Advanced RISC Machines) processor, or field-programmable gate leve array
(FPGA) realize.In addition control protection electric circuit can include over-sampling modulate circuit, analog-digital converter (ADC) and communication interface
Circuit.Described control protection electric circuit includes analog side control circuit, mains side control circuit, DC side control circuit and protection electricity
Four, road part.Analog side control circuit, mains side control circuit, DC side control circuit and protection circuit function can under
Introduce in literary composition.
A better embodiment of the present utility model is related to a kind of power amplifier device, and concrete structure is as shown in figure 3, wrap
Include：Analog side convertor circuit 100, dc bus circuit 110 and mains side convertor circuit 120.
Analog side convertor circuit 100 is connected with mains side convertor circuit 120 through dc bus circuit 110.Wherein, analog side
Convertor circuit 100 adopts the many brachium pontis of common DC bus and filter reactance parallel connection topological structure, and controls driving dress with tested motor
Put and carry out power connection；Wherein, analog side convertor circuit 100 includes simulation input switch 101, input filter 102, filter in parallel
Ripple inductance 103 and three-phase two level parallel brachium pontis 104；Input filter 102 is through described parallel filtering inductance 103 and described three-phase
Two level parallel brachium pontis 104 connect；Described input filter 102 is LC structure, and it is inductance that simulation input switchs 101 sides, input
Side is inductance, and parallel filtering inductance 103 side is electric capacity, and described three-phase two level parallel brachium pontis 104 is by 3n brachium pontis in DC side
It is formed in parallel, each mutually respectively have n brachium pontis, wherein n is more than or equal to 2；The midpoint equal series filtering inductance of every brachium pontis, point
With described input filter 102 equivalent composition LCL type wave filter jointly after being in parallel；Described three-phase two level parallel brachium pontis 104
In switch be power electronics wholly-controled device, the big work(in both being of the switchtype in three-phase two level parallel brachium pontis 104
The insulated gate bipolar transistor (IGBT) that rate occasion is commonly used, can be mos field effect transistor again
(MOSFET), can also be relative integrated gate commutated thyristor (IGCT) updating etc.；In three-phase two level parallel brachium pontis 104
The material of switch can be both conventional silicon materials, can be carborundum (SiC) or GaAs (GaAs) of broad stopband etc. again.In parallel
Filter inductance 103 includes 3 inductance in parallel.Input filter 102 includes 3 inductance and 3 equivalent capacitys, and 3 equivalent
Electric capacity connection triangular in shape, or be in star-like connection, every equivalent capacity according to practical situation by single only or many capacitor strings
Composition in parallel.Switch in three-phase two level parallel brachium pontis includes anti-paralleled diode.
Mains side convertor circuit 120 is used for carrying out two-way flow control to power, realizes energy feedback, maintains dc bus
Stablizing of electric capacity 111 voltage, can be cost-effective.Specifically, power grade during described power amplifier device work is less than
During predetermined power (such as 50kW), described mains side convertor circuit 120 can adopt two level three-phase half-bridge unsteady flow topological structure,
Described mains side convertor circuit 120 includes corresponding to respectively 3 two level brachium pontis 123 of three-phase and every phase brachium pontis midpoint is connected
Grid-connected wave filter 122, grid-connected switch 121 and mains side Variable flow control unit (not shown)；Grid-connected wave filter 122 can be selected for L
Type filter inductance, may also be employed LCL type wave filter.In the present embodiment, L-type filter inductance selected by grid-connected wave filter 122.Institute
When stating power grade during power amplifier device work and being more than or equal to above-mentioned predetermined power, described mains side convertor circuit
120 topological structure is consistent with the topological structure of described analog side convertor circuit 100, the controlling party of mains side convertor circuit 120
Method is consistent with the control method of described analog side convertor circuit 100.Mains side convertor circuit carries out two-way flow control to power,
Realize energy feedback, as such, it is possible to cost-effective.
In terms of existing technologies, in power amplifier device analog side convertor circuit adopt the many brachium pontis of common DC bus and
Filter reactance parallel connection topological structure, reduces the equivalent output impedance of analog side convertor circuit thus improve power amplifier device
Control bandwidth；Meanwhile, by adopting LCL type wave filter in analog side convertor circuit, it is to avoid power amplifier device with tested
Motor control driving means there may be the collision problem on same branch current is controlled, thus improving power amplifier device
The adaptability of driving means is controlled to the tested motor of various technical characteristics, practical；Additionally, mains side convertor circuit pair
Power carries out two-way flow control, realizes energy feedback, as such, it is possible to cost-effective.
Specifically, dc bus circuit 110 includes：Dc-link capacitance 111, leadage circuit and soft starting circuit；Direct current
Bus capacitor 111 is connected in parallel on dc bus two ends；Leadage circuit is connected in parallel on dc-link capacitance 111 two ends, for completing to survey
After trial business or DC voltage more in limited time safely and fast discharges the energy of storage on dc-link capacitance 111；Soft start electricity
Road is connected on the dc bus being in dc-link capacitance 111 mains side, for limiting the charging electricity of dc-link capacitance 111
Stream is in preset range.Wherein, leadage circuit by connect release switch 112 and bleeder resistance 113 constitute.Soft starting circuit by
Soft start switch 114 in parallel and soft start resistance 115 are constituted.
The control protection electric circuit of power amplifier device adopts digital circuit, and its kernel control chip can be selected for numeral letter
Number processor (DSP), or ARM (Advanced RISC Machines) processor, or field programmable gate and array (FPGA)
Realize, comprise additionally in over-sampling modulate circuit, analog-digital converter (ADC), communication interface circuit.Described control protection electric circuit is pressed
It is divided into analog side control circuit, mains side control circuit, DC side control circuit according to function, and four parts of protection circuit.
The starting up method of in present embodiment power amplifier device is described below, concrete as shown in figure 4, including
Following steps：
Step 401, self-inspection simultaneously arranges the original state of each switch.Specifically, after start, power amplifier device is carried out first
Self-inspection, and its each electric switch is set for initial position, specially：As shown in figure 3, the grid-connected switch 121 of disjunction power supply 2, disjunction
Soft start switch 114, disjunction simulation input switch 101.
Step 402, judges whether mistake.If so, enter step 403, if otherwise entering step 404. opening and closing electrically
Switching manipulation is abnormal or other mistakes occur, then report to the police and by fault information reporting to real-time simulation machine, then circular wait
The shutdown of user or reset command.
Step 403, reports self-inspection to pass through information.Specifically, if no any fault in process of self-test, letter is passed through in self-inspection
Breath reports to real-time simulation machine.
Step 404, reports to the police and reports self test failure information.
Step 405, circular wait shutdown or instruction of restarting.
Step 406, the grid-connected switch of closure uploaded state.Close grid-connected switch, enter soft start working condition, and report
State is to real-time simulation machine.
Step 407, judges the whether out-of-limit Vdc1 of DC voltage.If so, then enter step 408, otherwise continue executing with step
407.Specifically, detect DC capacitor voltage, if the value of DC capacitor voltage is not above soft start voltage limit value Vdc1, weigh
Multiple step 407.
Step 408, closure soft start switch uploaded state.If DC capacitor voltage exceedes soft start voltage limit value
Vdc1, then close soft start switch 114, enters hard reboot working condition, and reports real-time simulation machine.
Step 409, judges the whether out-of-limit Vdc2 of DC voltage.If so, then enter step 410, otherwise continue executing with step
409.Specifically, detect DC capacitor voltage, if its value is not above hard reboot voltage limits Vdc2, repeat step 409.
Step 410, is started and carried out mains side Variable flow control.If DC capacitor voltage exceedes soft start voltage limit value
Vdc2, then be started and carried out power supply Variable flow control, enters controlled rectifier working condition, and reports real-time simulation machine.
Step 411, judges whether DC voltage enters rated range.If so, execution step 412, otherwise continue executing with step
Rapid 411.Specifically, detect DC capacitor voltage, if its value does not enter into rated range, repeat step 411.
Step 412, closure simulation input switch.Specifically, if DC capacitor voltage value has been enter into rated range, close
Simulation input switch 101.
Step 413, enters stand-by heat working condition and reports real-time simulation machine.
The operation of power amplifier device is described below in present embodiment and exits method, concrete as shown in figure 5, bag
Include following steps：
Step 501, judges whether to break down.If so, then execution step 502, otherwise execution step 503.
Step 502, reports to the police and reports operation troubles information.Specifically, by fault information reporting to real-time simulation machine.
Step 509, closes all pwm signals.
Step 510, closes the every other switch of soft start switch disjunction.
Step 511, closes all control and uploaded state.Specifically close all control circuits.
Step 503, judges whether to receive shutdown command.If so, then execution step 504, otherwise, execution step 505.If not yet
Occur fault, then judge whether to receive normal shutdown order, if receiving shutdown command, execution step 504, otherwise skip to
Step 505.
Step 504, setting current reference is by currency gradually to zero.Specifically, setting current reference value is pressed from currency
It is gradually decreased to zero according to specified rate of change.
Step 506, executes analog side Variable flow control.
Step 507, executes mains side Variable flow control.
Step 505, updates the current reference value from real-time simulation machine.
Step 512, executes analog side current control.
Step 513, executes mains side current control.
Step 508, judges whether analog side electric current is less than threshold value Ictrl1.If so, then execution step 509, otherwise, execution
Step 501.
Finally it should be noted that：Above example only in order to the technical solution of the utility model to be described, is not intended to limit；
Although being described in detail to this utility model with reference to the foregoing embodiments, it will be understood by those within the art that：
It still can be modified to the technical scheme described in foregoing embodiments, or wherein some technical characteristics are carried out etc.
With replacement；And these modifications or replacement, do not make the essence of appropriate technical solution depart from this utility model each embodiment technology
The spirit and scope of scheme.
Claims (6)
1. a kind of power amplifier device is it is characterised in that include：Analog side convertor circuit, dc bus circuit and mains side become
Current circuit；
Described analog side convertor circuit is connected with described mains side convertor circuit through described dc bus circuit；
Described analog side convertor circuit adopts the many brachium pontis of common DC bus and filter reactance parallel connection topological structure, and and tested motor
Driving means are controlled to carry out power connection；Wherein, described analog side convertor circuit include input filter, parallel filtering inductance with
Three-phase two level parallel brachium pontis；Described input filter is through described parallel filtering inductance with described three-phase two level parallel brachium pontis even
Connect；Described input filter is LC structure, and described parallel filtering inductance side is electric capacity, and described three-phase two level parallel brachium pontis is by 3n
Brachium pontis forms in DC side parallel, and each mutually respectively have n brachium pontis, and wherein n is more than or equal to 2；The midpoint of every brachium pontis is equal
Series filtering inductance, with described input filter equivalent composition LCL type wave filter jointly after split-phase parallel connection；Described three-phase two level
Switch in brachium pontis in parallel is power electronics wholly-controled device；
When power grade during described power amplifier device work is less than predetermined power, described mains side convertor circuit adopts two electricity
Flat three-phase half-bridge unsteady flow topological structure, described mains side convertor circuit includes corresponding to respectively 3 two level brachium pontis of three-phase and every
Grid-connected wave filter, grid-connected switch and mains side Variable flow control unit that phase brachium pontis midpoint connects, described grid-connected wave filter is L-type
Filter inductance, or be LCL type wave filter；
When power grade during described power amplifier device work is more than or equal to described predetermined power, described mains side unsteady flow
The topological structure of circuit is consistent wherein with the topological structure of described analog side convertor circuit.
2. power amplifier device according to claim 1 is it is characterised in that described input filter includes 3 equivalent electric
Hold, the connection triangular in shape of described 3 equivalent capacitys, or be in star-like connection, every described equivalent capacity by single only or many electricity
Container connection in series-parallel is constituted.
3. power amplifier device according to claim 1 is it is characterised in that described dc bus circuit includes：Direct current is female
Line capacitance, leadage circuit and soft starting circuit；
Described dc-link capacitance is connected in parallel on dc bus two ends；
Described leadage circuit is connected in parallel on described dc-link capacitance two ends, for after completing test assignment or DC voltage is got over
The energy of storage on dc-link capacitance described in time-release is discharged；
Described soft starting circuit is connected on the dc bus being in described dc-link capacitance mains side, described straight for limiting
The charging current of stream bus capacitor is in preset range.
4. power amplifier device according to claim 3 is it is characterised in that described leadage circuit is by the switch of releasing connected
Constitute with bleeder resistance.
5. power amplifier device according to claim 3 is it is characterised in that described soft starting circuit is by soft start in parallel
Switch and soft start resistance are constituted.
6. power amplifier device according to claim 1 is it is characterised in that opening in described three-phase two level parallel brachium pontis
Close and include anti-paralleled diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620964350.4U CN206004543U (en) | 2016-08-27 | 2016-08-27 | Power amplifier device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620964350.4U CN206004543U (en) | 2016-08-27 | 2016-08-27 | Power amplifier device |
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| Publication Number | Publication Date |
|---|---|
| CN206004543U true CN206004543U (en) | 2017-03-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061475A (en) * | 2018-11-01 | 2018-12-21 | 上海科梁信息工程股份有限公司 | Permanent magnet synchronous motor shorted-turn fault analogy method, device, system, medium |
| CN113824355A (en) * | 2021-10-09 | 2021-12-21 | 陕西航空电气有限责任公司 | Power conversion topological structure suitable for high-power switch reluctance motor control |
-
2016
- 2016-08-27 CN CN201620964350.4U patent/CN206004543U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109061475A (en) * | 2018-11-01 | 2018-12-21 | 上海科梁信息工程股份有限公司 | Permanent magnet synchronous motor shorted-turn fault analogy method, device, system, medium |
| CN109061475B (en) * | 2018-11-01 | 2021-09-10 | 上海科梁信息科技股份有限公司 | Method, device, system and medium for simulating turn-to-turn short circuit fault of permanent magnet synchronous motor |
| CN113824355A (en) * | 2021-10-09 | 2021-12-21 | 陕西航空电气有限责任公司 | Power conversion topological structure suitable for high-power switch reluctance motor control |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Room 201, building 6, 829 Yishan Road, Xuhui District, Shanghai 200233 Patentee after: Shanghai Keliang Information Technology Co.,Ltd. Address before: Room 201, building 6, 829 Yishan Road, Xuhui District, Shanghai 200233 Patentee before: SHANGHAI KELIANG INFORMATION ENGINEERING Co.,Ltd. |
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