CN206698150U - Vidacare corp and electrical equipment - Google Patents
Vidacare corp and electrical equipment Download PDFInfo
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- CN206698150U CN206698150U CN201720296177.XU CN201720296177U CN206698150U CN 206698150 U CN206698150 U CN 206698150U CN 201720296177 U CN201720296177 U CN 201720296177U CN 206698150 U CN206698150 U CN 206698150U
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Abstract
The utility model provides a kind of Vidacare corp and electrical equipment with flow equalizing function.Vidacare corp provided by the utility model, is arranged in electrical equipment, for driving electrical equipment, including：Polyphase machine；Dc source；Instruct sending part；Current sensor；Output transducer；Controller；Driver；Power inverter, have the feature that：Wherein, polyphase machine winding has j separate polyphase windings units, power inverter has the j separate power conversion units to be connected one to one with j polyphase windings unit, controller includes the control unit of j separate output motor control signals, driver has j separate driver elements, it is connected respectively with j power conversion unit, j is the positive integer more than 1.
Description
Technical field
The utility model belongs to machine field, more particularly to a kind of Vidacare corp with flow equalizing function and electronic
Equipment.
Background technology
In society now, the requirement more and more higher to environmental protection, the environmental protection standard of various equipment also improves therewith.For
Preferably environmental protection, country has issued various policies and has widelyd popularize new energy and regenerative resource.
At present, it has been the main flow of present day devices development using electric energy as the power of various equipment.Electricity using electricity as the energy
Dynamic equipment such as electric automobile, electri forklift are also increasingly favored by manufacturer and consumer.Electrical equipment not only pollute it is small,
Electric energy can be provided by regenerative resource, moreover, compared with fuel oil equipment, it also have energy utilization rate it is high, it is simple in construction,
The advantages that noise is small, dynamic property is good and portability is high.Under petroleum resources increasingly intense situation, electric drive is greatly developed
Device, particularly high-power electric driver for example electronic battlebus, electronic warship, Electric aircraft and electric drive aircraft carrier etc.
Deng having far-reaching significance for national defense safety.
In high-performance multi-phase motor control system, in order to improve the control accuracy of motor and dynamic response characteristic, typically
All implement closed-loop current control, when the connected mode of armature winding be star connection or polygonal annular be coupled when, it is necessary to
The line current of k phases motor at least (k-1) phase is detected, it is necessary to be equipped with (k-1) individual current detecting unit.
In existing Vidacare corp, the requirement to power switch pipe is extremely harsh, and in normal work, power is opened
Closing pipe must work below maximum operation temperature, maximum operating currenbt and maximum working voltage, once exceed any one
Part, power switch pipe will damage；In addition, when the change of the component parameter in electronic circuit exceeds normal range of operation,
Overvoltage or overcurrent may be produced in power switch pipe, causes power switch pipe to damage and then causes electrical equipment failure；
In addition, with the increase of working time, aging, maximum operation temperature, maximum operating currenbt and maximum work occur for power switch pipe
Make voltage all to decrease, the situation of power switch pipe damage failure easily occurs, and then cause to connect the power switch pipe
The open circuit of armature winding or short circuit.
High-power electric drive device and electrical equipment, particularly low-voltage, high-current Vidacare corp and electrical equipment,
The controller or power inverter that continuous operating current is very big are needed, and related technology and product is controlled by individual countries and company
System and monopolization, cause price very high, and the high-performance electric machine controller that can purchase of in the market or power inverter output
Line current value also be only below a kiloampere.After all, exactly generate manufacture level and limit single power switch
The current value of pipe, the Current Sharing Technology of multiple power switch pipes can not meet linear rule or control circuit and algorithm excessively
The reasons such as complexity, seriously restrict and have impact on the development of low-voltage, high-current Vidacare corp and electrical equipment.
In addition, it is high-power, particularly in MW class motor, current value exceeds well over the most Dalian that power switch pipe can be born
Continuous operating current, so reducing the line current of motor using by increasing the number of phases of motor.But the motor of the high number of phases is set
Meter, manufacture and control method are different from traditional design, manufacture and control method, and this not only adds the cost of production, difficulty
Degree and complexity, and when correlation technique is not yet ripe, can not be applied and be popularized, and constrain heavy-duty motor, electronic
Drive device and electrical equipment are particularly the development of electronic military equipment.
To sum up, these problems have had a strong impact on high-performance high-power electric equipment, including low-voltage, high-current is electronic
The development of electronic battlebus, electronic warship, Electric aircraft and electric drive aircraft carrier on car, electric ship, or even national defence.
Utility model content
The utility model is carried out to solve above-mentioned problem, and it is an object of the present invention to provide a kind of electricity with flow equalizing function
Dynamic drive device and electrical equipment.
<Structure 1>
The utility model provides a kind of Vidacare corp, is arranged in electrical equipment, for driving electrical equipment, bag
Include：Polyphase machine, there is rated line voltage and specified line current；Dc source, there is the rated line voltage phase with polyphase machine
Corresponding constant voltage, for providing the line current corresponding with specified line current；Sending part is instructed, is sent defeated with polyphase machine
The corresponding command signal of the rotating speed or the value of torque that go out；Current sensor, detection form the polyphase windings of polyphase machine winding
The line current value of unit, and current feedback signal corresponding to transmission；Output transducer, the rotating speed or turn that detection polyphase machine exports
Square, and output feedback signal corresponding to transmission；Controller, according to command signal, current feedback signal and output feedback signal meter
Calculate and export operation control signal and motor control signal；Driver, enter working condition under operation control signal effect
Or halted state, drive signal is produced according to motor control signal in the operating condition；Power inverter, in the work of drive signal
With the lower line current that direct current is converted to polyphase machine needs, have the feature that：Wherein, polyphase machine winding has j
Individual separate polyphase windings unit, power inverter have j to be connected one to one with j polyphase windings unit mutually
Independent power conversion unit, controller include the control unit of j separate output motor control signals, driving implement
There are j separate driver elements, be connected respectively with j power conversion unit, j is the positive integer more than 1.
In Vidacare corp provided by the utility model, it can also have the feature that：Wherein, power conversion is worked as
The continuous operating current virtual value of maximum that the single power conversion circuit of unit normally exports is I1, the max line electricity of polyphase machine
Stream virtual value is INWhen, the number j of polyphase windings unit meets following conditions：
J ＞ IN÷I1,
Wherein, j is the positive integer more than 1.
In Vidacare corp provided by the utility model, it can also have the feature that：Wherein, polyphase machine is
Any one in asynchronous machine, synchronous motor, switched reluctance machines, brshless DC motor, stepper motor, polyphase machine winding
And can be divided exactly around radical by the number j of polyphase windings unit.
In Vidacare corp provided by the utility model, it can also have the feature that：Wherein, dc source is
Battery pack or rectifier power source, battery pack include at least one series battery or connection in series-parallel battery pack.
In Vidacare corp provided by the utility model, it can also have the feature that：Wherein, power conversion list
Member be made up of SPM or comprising multiple power switch pipes, power switch pipe is electric power field-effect transistor
(PowerMOSFET), gate level turn-off thyristor (GTO), integrated gate commutated thyristor (IGCT), insulated gate bipolar crystal
Manage any one in (IGBT), electric power bipolar transistor (GTR) and door pole stream-exchanging thyristor (SGCT).
<Structure two>
Further, the utility model additionally provides a kind of electrical equipment containing above-mentioned Vidacare corp.
The effect of utility model and effect
Vidacare corp and electrical equipment according to involved by the utility model, control unit, driver element, power
Converter unit, polyphase windings unit, current detecting unit are separate, the output line of same phase in power conversion unit
The current detecting unit number of electric current is j, a driver element, the power conversion of each control unit and corresponding connection
Unit, a polyphase windings unit and a current detecting unit form a main circuit unit, so not only retaining original work(
The ripe control algolithm of rate converter, the mature technology of motor, a few ripe switch element technology in parallel, and drop
The low requirement to many thyristor consistency of performance, can be met using common thyristor will
Ask, avoid a large amount of caused by the high many individual switch elements of uniformity of being chosen carefully from substantial amounts of thyristor
The consuming of manpower and financial resources.
In addition, also solve in Vidacare corp, due to motor, power inverter, driver, controller and sensing
Dead band, time lag, uncertainty, disturbance be present and non-linear etc. exist between influence factor, each power switch pipe in the devices such as device
Switching characteristic is inconsistent and each polyphase windings unit due to physical location is inconsistent in electric machine structure and magnetic field intensity not
Consistent the problem of causing line current to be difficult to be consistent, so, in the utility model, the motor in each main circuit unit
Line current is controlled by independent control unit.Controller calculates according to command signal, output feedback signal and is assigned to each master
Line current command value in circuit unit；Each control unit is calculated and is assigned to according to line current command value, current feedback signal
The motor control signal of corresponding driver element, ensures that the current value of each polyphase windings unit is equal, avoid indivedual multiphases around
The current value of group unit is excessive, causes overheat, aging acceleration and the service life reduction of corresponding power switch unit, causes motorized motions
The fault rate increase of device, service life reduction.
Moreover, in the utility model, for the different capacity switching tube in different capacity converter unit, it is not necessary to which essence is chosen
The high many individual switch elements of uniformity carefully are selected, further save man power and material when selecting.
To sum up, Vidacare corp of the present utility model has structure design simple, reasonable, and cost is low, and service behaviour is steady
It is fixed, safe and reliable, the advantages that service life is long.
Brief description of the drawings
Fig. 1 is the electrical block diagram of Vidacare corp in embodiment of the present utility model；And Fig. 2 is existing skill
The electrical block diagram of common high current polyphase machine and power inverter in art.
Embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, with
Lower combination accompanying drawing illustrates specific embodiment of the present utility model.
Vidacare corp 10 be arranged on electrical equipment for example electric tool, four-axle aircraft, electric automobile, electric ship,
In electri forklift, electronic military equipment, for driving electrical equipment.
Fig. 1 is the electrical block diagram of the Vidacare corp in the present embodiment.
Passed as shown in figure 1, Vidacare corp 10 includes polyphase machine 11, dc source 12, instruction sending part 13, electric current
Sensor 14, output transducer 15, controller 16, driver 19 and power inverter 20.
The number of phases of polyphase machine 11 is k, has rated line voltage and specified line current.Polyphase machine 11 is asynchronous electricity
Any one in machine, synchronous motor, switched reluctance machines, brshless DC motor and stepper motor.In the present embodiment, multiphase
Motor 11 is asynchronous machine.
Polyphase machine 11 has an armature and the polyphase machine winding on armature.In the present embodiment, it is more
The group number of phase machine winding is identical with the number of armature, when armature number is two and the above, using the more of two groups and the above
Phase machine winding.Every group of polyphase machine winding includes j separate polyphase windings units 111, and j number can be by more
The winding of phase motor 11 and carry out average fractionation around radical, j number is more than or equal to 2.Before and after fractionation, polyphase machine winding and j
The winding number of phases, winding phase sequence and the winding connection of individual polyphase windings unit keep constant.
In the present embodiment, k tri-, i.e. polyphase machine 11 are three phase electric machine, and correspondingly, polyphase windings unit 111 is three
Phase winding unit, each three-phase windings unit have three independent winding A, B, C.
Dc source 12 has the constant voltage corresponding with the rated line voltage of polyphase machine 11, and dc source 12 is electricity
Pond group or rectifier power source, battery pack include at least one series battery or connection in series-parallel battery pack.
Sending part 13 is instructed to send the command signal corresponding with the value of the rotating speed of the output of polyphase machine 11 or torque.
Current sensor 14 detects the C phase line currents of power conversion unit output and exports corresponding current feedback letter
Number.Current feedback signal is received by the control unit 162 in controller 16.
The rotating speed or torque of the detection polyphase machine output of output transducer 15 simultaneously export corresponding output feedback signal.It is defeated
Go out feedback signal to be received by controller 16.
Controller 16 is calculated and driven according to the command signal of instruction sending part 13 and the output feedback signal of output transducer 15
The operation control signal 17 of moving cell and the line current instruction being evenly distributed in the main circuit unit of each normal work
161；Each control unit 162 calculates according to the feedback signal of line current instruction 161, current sensor 14 and is assigned to corresponding driving
The motor control signal 18 of unit, ensure the current value independent control of each polyphase windings unit and both correspond to same line
The value of current-order 161.
Driver 19 enters working condition in the case where operation control signal 17 controls, and driver 19 produces driving power conversion electricity
The drive signal of road work.Driver 19 produces the drive signal of control power inverter 20 according to motor control signal 18.
Driver 19 has j separate driver elements 191, and the reception control unit 162 of driver element 191 is sent
Motor control signal 181, j driver element 191 are connected with j power conversion unit 201 respectively.The basis of driver element 191
Run control signal 17 and enter working condition or halted state.Each driver element 191 can send A phases drive signal, B
Phase drive signal and C phase drive signals, the three-phase driving signal drive A phases power conversion circuit, B phases power conversion electricity respectively
Power switch pipe in road and C phase power conversion circuits, turns it on or closes.
Power inverter 20 direct current is converted in the presence of drive signal voltage required for polyphase machine 11 and
Electric current.Power inverter 20 includes j power conversion unit 201 corresponding with j polyphase windings unit 111 respectively.
There are each power conversion unit 201 three to be connected in parallel to each other, structure and parameter identical A phases power becomes
Change circuit, B phases power conversion circuit and C phase power conversion circuits.A phase power conversion circuits are connected to A phases in winding element
The tie point of winding and C phase windings, B phase power conversion circuits are connected to the connection of B phase windings and A phase windings in winding element
Point, power conversion circuit are connected to the tie point of C phase windings and B phase windings in winding element, respectively to corresponding polyphase windings
Unit provides line current.
Each power conversion circuit contains at least two power switch pipes, is to use when power switch pipe more than two
Current Sharing Technology.In the present embodiment, each power conversion circuit contains two power switch pipes.Two power switch pipes
With the maximum continuous operating current of identical.Operating current is necessarily less than maximum continuous operating current, and power switch pipe just has can
It can run steadily in the long term, if operating current exceedes this current value, power switch pipe will the breakdown damage due to excessively stream.
In the present embodiment, power conversion unit 201 and 202 can be made up of SPM, can also be used more
Individual power switch pipe combines.
Power switch pipe is electric power field-effect transistor (Power MOSFET), gate level turn-off thyristor (GTO), integrated
(GTR) and gate pole change in door pole stream-exchanging thyristor (IGCT), insulated gate bipolar transistor (IGBT), electric power bipolar transistor
Flow any one in IGCT (SGCT).
In the present embodiment, driver elements 191 separate j respectively with j separate power conversion units
201 are connected and are powered to j separate polyphase windings units 111.
The number of polyphase windings unit in the present embodiment is j, and j is integer, and meets following condition：J ＞ IN÷I1, should
I in formula1It is the continuous operating current virtual value of maximum that the single power conversion circuit of power conversion unit normally exports, INIt is more
The max line current effective value of phase motor.
The line current of each polyphase windings unit is controlled by independent control unit in the utility model, and each control
The line current command value of unit processed is all equal, can ensure the current value of each polyphase windings unit in the presence of control unit
It is equal, reach the purpose flowed, avoid that the current value of indivedual polyphase windings units is excessive, cause corresponding power switch unit
Overheat, aging acceleration and service life reduction, add the safety and reliability of Vidacare corp, improve service life.
The effect of embodiment and effect
Vidacare corp and electrical equipment according to involved by the present embodiment, control unit, driver element, power become
It is separate to change unit, polyphase windings unit, current detecting unit, the output line electricity of same phase in power conversion unit
The current detecting unit number of stream is j, a driver element, the power conversion list of each control unit and corresponding connection
Member, a polyphase windings unit and a current detecting unit form a main circuit unit, so not only retaining original power
The ripe control algolithm of converter, the mature technology of motor, a few ripe switch element technology in parallel, and reduce
Requirement to many thyristor consistency of performance, can be met using common thyristor will
Ask, avoid a large amount of caused by the high many individual switch elements of uniformity of being chosen carefully from substantial amounts of thyristor
The consuming of manpower and financial resources.
In addition, also solve in Vidacare corp, due to motor, power inverter, driver, controller and sensing
Dead band, time lag, uncertainty, disturbance be present and non-linear etc. exist between influence factor, each power switch pipe in the devices such as device
Switching characteristic is inconsistent and each polyphase windings unit due to physical location is inconsistent in electric machine structure and magnetic field intensity not
Consistent the problem of causing line current to be difficult to be consistent, so, in the present embodiment, the motor lines in each main circuit unit
Electric current is controlled by independent control unit.Controller calculates according to command signal, output feedback signal and is assigned to each main electricity
Line current command value in the unit of road；Each control unit is calculated and is assigned to pair according to line current command value, current feedback signal
The motor control signal of driver element is answered, ensures that the current value of each polyphase windings unit is equal, avoids indivedual polyphase windings
The current value of unit is excessive, causes overheat, aging acceleration and the service life reduction of corresponding power switch unit, causes motorized motions to fill
The fault rate increase put, service life reduction.
Moreover, in the present embodiment, for the different capacity switching tube in different capacity converter unit, it is not necessary to which essence is chosen carefully
Many individual switch elements that uniformity is high are selected, further save man power and material when selecting.
To sum up, the Vidacare corp of the present embodiment has structure design simple, reasonable, and cost is low, stable work in work,
Securely and reliably, the advantages that service life is long.
Above example is only the basic explanation under the utility model design, the utility model is not limited.And according to
Any equivalent transformation made according to the technical solution of the utility model, belongs to the scope of protection of the utility model.
Claims (6)
1. a kind of motor-driven control device, is arranged in electrical equipment, for driving the electrical equipment, including：
Polyphase machine, there is rated line voltage and specified line current；
Dc source, there is the constant voltage corresponding with the rated line voltage of the polyphase machine, for offer and institute
State the corresponding line current of specified line current；
Sending part is instructed, sends the command signal corresponding with the value of the rotating speed of polyphase machine output or torque；
Current sensor, detection form the line current value of the polyphase windings unit of the polyphase machine winding, and corresponding to transmission
Current feedback signal；
Output transducer, detect rotating speed or the torque of the polyphase machine output, and output feedback signal corresponding to transmission；
Controller, calculated according to the command signal, the current feedback signal and the output feedback signal and export operation
Control signal and motor control signal；
Driver, enter working condition or halted state under the operation control signal effect, in the operating condition according to institute
State motor control signal and produce drive signal；
Power inverter, the direct current is converted to the line electricity of the polyphase machine needs in the presence of the drive signal
Stream,
It is characterized in that：
Wherein, the polyphase machine winding has j separate polyphase windings units,
There are the power inverter j separate power to be connected one to one with the j polyphase windings unit to become
Change unit,
The controller includes the control unit of the j separate output motor control signals,
The driver has j separate driver elements, is connected respectively with j power conversion unit,
The j is the positive integer more than 1.
2. motor-driven control device according to claim 1, it is characterised in that：
Wherein, when the continuous operating current virtual value of maximum that the single power conversion circuit of the power conversion unit normally exports
For I1, the max line current effective value of the polyphase machine is INWhen, the number j of the polyphase windings unit meets following conditions：
J ＞ IN÷I1,
Wherein, j is the positive integer more than 1.
3. motor-driven control device according to claim 1, it is characterised in that：
Wherein, the polyphase machine is in asynchronous machine, synchronous motor, switched reluctance machines, brshless DC motor, stepper motor
Any one,
The polyphase machine winding and can be divided exactly around radical by the number j of the polyphase windings unit.
4. motor-driven control device according to claim 1, it is characterised in that：
Wherein, the dc source is battery pack or rectifier power source,
The battery pack includes at least one series battery or connection in series-parallel battery pack.
5. motor-driven control device according to claim 1, it is characterised in that：
Wherein, the power conversion unit be made up of SPM or comprising multiple power switch pipes,
The power switch pipe is electric power field-effect transistor, gate level turn-off thyristor, integrated gate commutated thyristor, insulation
Any one in grid bipolar transistor, electric power bipolar transistor and door pole stream-exchanging thyristor.
A kind of 6. electrical equipment, it is characterised in that including：
Motor-driven control device according to any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720296177.XU CN206698150U (en) | 2017-03-24 | 2017-03-24 | Vidacare corp and electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720296177.XU CN206698150U (en) | 2017-03-24 | 2017-03-24 | Vidacare corp and electrical equipment |
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| Publication Number | Publication Date |
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| CN206698150U true CN206698150U (en) | 2017-12-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720296177.XU Active CN206698150U (en) | 2017-03-24 | 2017-03-24 | Vidacare corp and electrical equipment |
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| Country | Link |
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| CN (1) | CN206698150U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923694A (en) * | 2018-09-19 | 2018-11-30 | 无锡赛盈动力科技有限公司 | A kind of motor driven systems |
-
2017
- 2017-03-24 CN CN201720296177.XU patent/CN206698150U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108923694A (en) * | 2018-09-19 | 2018-11-30 | 无锡赛盈动力科技有限公司 | A kind of motor driven systems |
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