CN107994813A - A kind of two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine - Google Patents
A kind of two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine Download PDFInfo
- Publication number
- CN107994813A CN107994813A CN201711411875.0A CN201711411875A CN107994813A CN 107994813 A CN107994813 A CN 107994813A CN 201711411875 A CN201711411875 A CN 201711411875A CN 107994813 A CN107994813 A CN 107994813A
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- China
- Prior art keywords
- group
- supporting plate
- motor
- direct current
- power
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Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P6/00—Arrangements for controlling synchronous motors or other dynamo-electric motors using electronic commutation dependent on the rotor position; Electronic commutators therefor
- H02P6/04—Arrangements for controlling or regulating the speed or torque of more than one motor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/003—Constructional details, e.g. physical layout, assembly, wiring or busbar connections
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P27/00—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage
- H02P27/04—Arrangements or methods for the control of AC motors characterised by the kind of supply voltage using variable-frequency supply voltage, e.g. inverter or converter supply voltage
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
An embodiment of the present invention provides the two-way frequency conversion speed-adjusting system of high-power brushless double-fed three level of machine, including step：Motor driver group, rectification is carried out for being controlled to the coupled motor, while to the AC signal that the motor provides；Isolator, between being positioned over two motors, makes to influence each other between two motors, completely cuts off the electromagnetic interference of motor；Variable-frequency governor, is made of transformer and power conditioning module, and the transformer is connected in series with multiple power conditioning modules respectively, and the power conditioning module is connected with the brushless electric machine group.With the application of the invention, convenient carry realizes electric machine speed regulation.
Description
Technical field
The present invention relates to collection waste wood to utilize technical field, more particularly to a kind of high-power brushless double-fed three level of machine
Two-way frequency conversion speed-adjusting system.
Background technology
Motor is prime mover in the operating mechanisms such as wind turbine, water pump and crane, mechanical energy can be converted electrical energy into, in work
Extremely it is widely applied in industry production.
In traditional motor variable-frequency speed-regulating system, a frequency converter carries out frequency control to a motor, moreover, motor
Required energy is all provided by frequency converter, so, frequency inverter capacity used is larger than capacity motor.If motor requires frequency conversion
If device energy capable of bidirectional flowing, it is desirable to have two three-phase full-controlled bridges in frequency converter, so as to fulfill two-way " cross-straight-intersection "
Conversion.
It can be seen from the above that traditional motor variable-frequency speed-regulating system, frequency-tuning range is wide, is limited from mains frequency；But need
It is slightly larger than the frequency converter of capacity motor using capacity, and if multiple electric motors, it is necessary to more frequency converters are used, make system
It is bulky, involve great expense.
Brushless winding motor is a kind of New-type electric machine, there is two windings on motor stator, and a winding directly gets access to grid, separately
One winding connects drive control device, and the frequency control of motor can be realized by drive control device.
The content of the invention
One purpose of the embodiment of the present invention is to provide a kind of two-way change frequency modulation of three level of high-power brushless double-fed machine
Speed system, to realize the speed governing of motor group.Concrete technical scheme is as follows：
An embodiment of the present invention provides a kind of two-way frequency conversion speed-adjusting system of high-power brushless double-fed three level of machine, including step
Suddenly：
Brushless electric machine group, including at least a brushless electric machine；
Motor driver group, for being controlled to the coupled motor, while the motor is provided
AC signal carries out rectification；
Isolator, between being positioned over two motors, makes to influence each other between two motors, completely cuts off the electricity of motor
Magnetic disturbance；
Variable-frequency governor, is made of transformer and power conditioning module, the transformer respectively with multiple power tune
Section module is connected in series, and the power conditioning module is connected with the brushless electric machine group；
The power conditioning module, including：Signal gathering unit and trigger element, the adjusting trigger element include controllable
Silicon component and reactor, the signal acquisition module include the first current transformer and the second current transformer, first electricity
Current transformer series connection second current transformer, the second current transformer series connection silicon controlled component.
Optionally, the respective one of stator winding of multiple motors in the brushless electric machine group connects frequency control respectively
Device, another stator winding successively respectively with the corresponding input terminal of multiple drive control devices in the drive control device group
It is connected.
Optionally, the motor driver group is three-phase full-controlled bridge, its output terminal passes through the multiple of DC capacitor group respectively
The anode of the multiple isolators for being followed by the isolator group of capacitance voltage stabilizing.
Optionally, the anode of multiple isolators in the isolator group multiple direct currents with the DC capacitor group respectively
The anode of capacitance is connected, while is just being connected with the output of multiple drive control devices of the drive control device group, it is described every
Link together from device cathode, connect the positive input terminal of the energy feedback device.
Optionally, base of the motor driver group including driver mainboard, driving plate, driving output element, output
AC copper-line, supporting plate, insulator, direct current input copper bar and direct current connecting copper bar, it is characterised in that the supporting plate is fixed on drive
On the base of dynamic device mainboard, the driver mainboard is fixed on one wing base of supporting plate, and the driving plate is fixed on driver
The top of mainboard, the direct current connecting copper bar are fixed on the lower part of supporting plate opposite side, one end of the direct current input copper bar with it is straight
Stream connecting copper bar is connected, and the other end of direct current input copper bar is arranged on the top of supporting plate, between direct current input copper bar and supporting plate
Insulator is fixed with, one end of the output AC copper-line is connected with motor driver group, exports the other end of AC copper-line
The top of supporting plate is arranged on, exports and is fixed with insulator between AC copper-line and supporting plate, the output AC copper-line is Z-shaped
Shape.
Brief description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention.
Fig. 2 is the structure diagram of motor driver group.
Embodiment
Below in conjunction with the attached drawing in the embodiment of the present invention, the technical solution in the embodiment of the present invention is carried out clear, complete
Site preparation describes, it is clear that described embodiment is only part of the embodiment of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, those of ordinary skill in the art are obtained every other without making creative work
Embodiment, belongs to the scope of protection of the invention.
An embodiment of the present invention provides a kind of two-way frequency conversion speed-adjusting system of high-power brushless double-fed three level of machine, including step
Suddenly：
Brushless electric machine group includes at least a brushless electric machine；Motor driver group, for coupled motor into
Row control, while rectification is carried out to the AC signal that motor provides；
Isolator is used to be positioned between two motors, makes to influence each other between two motors, completely cuts off the electricity of motor
Magnetic disturbance；Intelligent isolator can be used with the system support such as unit aggregated instrument and DCS, PLC, oil field, petrochemical industry, manufacture,
Extensive application in the Important Project of the industries such as electric power, metallurgy.
Variable-frequency governor is made of transformer and power conditioning module, and transformer is carried out with multiple power conditioning modules respectively
It is connected in series, power conditioning module is connected with brushless electric machine group；
Power conditioning module, including：Signal gathering unit and trigger element, adjust trigger element include silicon controlled component and
Reactor, signal acquisition module include the first current transformer and the second current transformer, the first current transformer series connection second
Current transformer, the second current transformer serial connection controllable silicon component.
In a kind of implementation of the present invention, multiple motors respective one of stator winding point in brushless electric machine group
Variable-frequency governor is not connect, another stator winding is each corresponding with multiple drive control devices in drive control device group respectively successively
Input terminal be connected.
In addition, motor driver group is three-phase full-controlled bridge, its output terminal is steady by multiple capacitances of DC capacitor group respectively
The anode of the multiple isolators for being followed by isolator group of pressure.
In a kind of implementation, the anodes of multiple isolators in isolator group multiple direct currents with DC capacitor group respectively
The anode of capacitance is connected, while is just being connected with the output of multiple drive control devices of drive control device group, isolator cathode
Link together, connect the positive input terminal of energy feedback device.
In a kind of implementation of the present invention, referring to Fig. 2, including the base 1 of motor driver, driving plate 2, driving output
Element 3, output AC copper-line 4, supporting plate 5, insulator 6, direct current input copper bar 7 and direct current connecting copper bar 8, the supporting plate 5 are solid
It is scheduled on base 1, described 3 are fixed on 5 one wing base 1 of supporting plate, and the driving plate 2 is fixed on the upper of driving output element 3
Portion, the direct current connecting copper bar 8 are fixed on the lower part of 5 opposite side of supporting plate, and one end of the direct current input copper bar 7 is connected with direct current
Copper bar 8 is connected, and the other end of direct current input copper bar 7 is arranged on the top of supporting plate 5, solid between direct current input copper bar 7 and supporting plate 5
Surely there is insulator 6, one end of the output AC copper-line 4 is connected with driving output element 3, exports the another of AC copper-line 4
End is arranged on the top of supporting plate 5, exports and is fixed with insulator 6 between AC copper-line 4 and supporting plate 5.Using the implementation of Fig. 2 of the present invention
Example, can optimize the connection mode of motor driver, and since the electric current that AC copper-line is exported by " Z " font is larger, output is handed over
Copper bar is flowed not above driving plate by reducing the electromagnetic interference to driving plate.
The foregoing is merely a prefered embodiment of the invention, is not intended to limit the scope of the present invention.It is all in this hair
Any modification, equivalent replacement, improvement and so within bright spirit and principle, are all contained in protection scope of the present invention.
Claims (5)
1. the two-way frequency conversion speed-adjusting system of a kind of three level of high-power brushless double-fed machine, it is characterised in that including step：
Brushless electric machine group, including at least a brushless electric machine；
Motor driver group, for being controlled to the coupled motor, while to the exchange of motor offer
Signal carries out rectification；
Isolator, between being positioned over two motors, makes to influence each other between two motors, the electromagnetism for completely cutting off motor is done
Disturb；
Variable-frequency governor, is made of transformer and power conditioning module, the transformer respectively with multiple power adjusting moulds
Block is connected in series, and the power conditioning module is connected with the brushless electric machine group；
The power conditioning module, including：Signal gathering unit and trigger element, the adjusting trigger element include Group of Silicon Controlled Rectifier
Part and reactor, the signal acquisition module include the first current transformer and the second current transformer, and first electric current is mutual
Sensor series connection second current transformer, the second current transformer series connection silicon controlled component.
2. the two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine according to claim 1, it is characterised in that
The respective one of stator winding of multiple motors in the brushless electric machine group connects variable-frequency governor respectively, another stator around
Group is connected with the corresponding input terminal of multiple drive control devices in the drive control device group respectively successively.
3. the two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine according to claim 1, it is characterised in that
The motor driver group is three-phase full-controlled bridge, its output terminal is followed by institute by multiple capacitance voltage stabilizings of DC capacitor group respectively
State the anode of multiple isolators of isolator group.
4. the two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine according to claim 1, it is characterised in that
Anode of the anode of multiple isolators in the isolator group respectively with multiple DC capacitors of the DC capacitor group is connected
Connect, while be just connected with the output of multiple drive control devices of the drive control device group, the isolator cathode is connected to
Together, the positive input terminal of the energy feedback device is connect.
5. the two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine according to claim 1, it is characterised in that
The base of the motor driver group including driver mainboard, driving plate, driving output element, output AC copper-line, supporting plate, absolutely
Edge, direct current input copper bar and direct current connecting copper bar, it is characterised in that the supporting plate is fixed on the base of driver mainboard
On, the driver mainboard is fixed on one wing base of supporting plate, and the driving plate is fixed on the top of driver mainboard, described
Direct current connecting copper bar is fixed on the lower part of supporting plate opposite side, and one end of the direct current input copper bar is connected with direct current connecting copper bar
Connect, the other end of direct current input copper bar is arranged on the top of supporting plate, is fixed with insulator between direct current input copper bar and supporting plate, institute
The one end for stating output AC copper-line is connected with motor driver group, and the other end for exporting AC copper-line is arranged on the upper of supporting plate
Portion, exports and is fixed with insulator between AC copper-line and supporting plate, the output AC copper-line is zigzag.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711411875.0A CN107994813A (en) | 2017-12-23 | 2017-12-23 | A kind of two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711411875.0A CN107994813A (en) | 2017-12-23 | 2017-12-23 | A kind of two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107994813A true CN107994813A (en) | 2018-05-04 |
Family
ID=62042634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711411875.0A Pending CN107994813A (en) | 2017-12-23 | 2017-12-23 | A kind of two-way frequency conversion speed-adjusting system of three level of high-power brushless double-fed machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107994813A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102324861A (en) * | 2011-09-27 | 2012-01-18 | 北京华盛源通科技有限公司 | Motor driver |
| GB2489411A (en) * | 2011-03-25 | 2012-10-03 | Thomas George Logan | Control of a single phase brushless doubly fed generator |
| CN102868176A (en) * | 2012-09-13 | 2013-01-09 | 周顺新 | Energy feedback system based on replacing brake resistors of multiple stator frequency converters with inverter bridge |
| CN103166543A (en) * | 2011-12-09 | 2013-06-19 | 大禹电气科技股份有限公司 | Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor |
| CN104283212A (en) * | 2014-10-11 | 2015-01-14 | 广西大学 | Double-fed wind power generation set physical simulation platform based on Compact RIO |
| CN107069761A (en) * | 2017-03-24 | 2017-08-18 | 佛山市帝造电器有限公司 | Generator test reactive power adjustment device |
-
2017
- 2017-12-23 CN CN201711411875.0A patent/CN107994813A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2489411A (en) * | 2011-03-25 | 2012-10-03 | Thomas George Logan | Control of a single phase brushless doubly fed generator |
| CN102324861A (en) * | 2011-09-27 | 2012-01-18 | 北京华盛源通科技有限公司 | Motor driver |
| CN103166543A (en) * | 2011-12-09 | 2013-06-19 | 大禹电气科技股份有限公司 | Multi-split variable-frequency speed control system of energy-saving feedback type brushless coiling motor |
| CN102868176A (en) * | 2012-09-13 | 2013-01-09 | 周顺新 | Energy feedback system based on replacing brake resistors of multiple stator frequency converters with inverter bridge |
| CN104283212A (en) * | 2014-10-11 | 2015-01-14 | 广西大学 | Double-fed wind power generation set physical simulation platform based on Compact RIO |
| CN107069761A (en) * | 2017-03-24 | 2017-08-18 | 佛山市帝造电器有限公司 | Generator test reactive power adjustment device |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180504 |