CN116436370A - Variable winding switching control system and method - Google Patents
Variable winding switching control system and method Download PDFInfo
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- CN116436370A CN116436370A CN202310096851.XA CN202310096851A CN116436370A CN 116436370 A CN116436370 A CN 116436370A CN 202310096851 A CN202310096851 A CN 202310096851A CN 116436370 A CN116436370 A CN 116436370A
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- 238000004804 winding Methods 0.000 title claims abstract description 67
- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000009471 action Effects 0.000 claims description 3
- 230000008569 process Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 9
- 230000008859 change Effects 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 230000003313 weakening effect Effects 0.000 description 3
- FGRBYDKOBBBPOI-UHFFFAOYSA-N 10,10-dioxo-2-[4-(N-phenylanilino)phenyl]thioxanthen-9-one Chemical compound O=C1c2ccccc2S(=O)(=O)c2ccc(cc12)-c1ccc(cc1)N(c1ccccc1)c1ccccc1 FGRBYDKOBBBPOI-UHFFFAOYSA-N 0.000 description 1
- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
- H02P25/00—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details
- H02P25/16—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring
- H02P25/18—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays
- H02P25/184—Arrangements or methods for the control of AC motors characterised by the kind of AC motor or by structural details characterised by the circuit arrangement or by the kind of wiring with arrangements for switching the windings, e.g. with mechanical switches or relays wherein the motor speed is changed by switching from a delta to a star, e.g. wye, connection of its windings, or vice versa
Abstract
The invention discloses a variable winding switching control system and a method, comprising the following steps: a controller for outputting a plurality of control signals; the switching module is used for communicating the corresponding windings according to various control signals output by the controller; the variable winding module is used for forming a corresponding working state according to the execution result of the switching module; and a first terminal module and a second terminal module; the controller is connected with the variable winding module sequentially through the first wiring terminal module, the switching module and the second wiring terminal module. The variable winding switching control system and the variable winding switching control method can provide convenience for selecting different windings and required winding connection modes in the motor application process, widen the motor speed regulation range and improve the load carrying capacity.
Description
Technical Field
The present disclosure relates to a technology, and more particularly, to a variable winding switching control system and method.
Background
The stator winding of the three-phase motor consists of U, V, W three-phase windings, taking the example that each phase winding of the motor is formed by connecting two coil groups in series, namely six coil groups in total and corresponding to 12 wire outlet ends, the traditional motor is relatively fixed in winding connection mode, star connection or triangle connection is selected, the wire outlet mode is generally three wire outlet ends of the phase winding, and the number of the coil groups and the phase winding connection mode are fixed after the motor is manufactured.
In many ac motor driving occasions, such as electric automobiles, machine tool spindles, etc., the driving system of the motor is required to have larger torque under the condition of low speed, and can have wider speed regulation range, and the traditional speed regulation method mainly comprises weak magnetic speed regulation, pole-changing speed regulation, etc., and has advantages and disadvantages.
When the motor performs flux weakening speed regulation in a constant power area, the highest rotating speed of the motor is limited by rated voltage and the power level of the frequency converter, the speed rising range of flux weakening control is limited, and energy loss can be generated by the flux weakening control. The pole-changing speed regulation is generally applied to an asynchronous motor with a squirrel-cage rotor, so that the application range of the method is limited.
Aiming at the problems, the prior art proposes that the motor has larger torque at low speed by switching windings, and the speed regulation range of the motor can be widened. The permanent magnet flux linkage value is proportional to the number of turns of the motor stator winding, and thus the back emf value is proportional to the number of turns of the motor stator winding. When the motor runs at low speed, coil groups AX, BY and CZ are used for series connection, and star connection is formed, and the motor can output larger electromagnetic torque; when the motor reaches a certain rotation speed, in order to enhance the speed expansion capability of the motor, the coil group A, B, C, X, Y, Z is used to form a double star connection, and the counter electromotive force of the motor becomes half of the connection condition when the speed is low, so that the motor can reach a higher rotation speed. And when the motor wants to select star connection or triangle connection, the motor can be conveniently switched, and more winding connection modes are provided for different occasions.
Such as: document 1, "chinese patent application publication No. CN110112986a," provides a variable winding motor and a control method, in which the winding is changed based on star connection, and when delta connection is required, it cannot be realized, and the number of kinds of changes is small.
The prior art has few conversion types and can not meet variable requirements.
Disclosure of Invention
In order to solve the problem that the traditional motor can not conveniently change the selection of windings and the connection mode of the motor windings, the invention provides a variable winding switching control system and a variable winding switching control method, which can provide convenience for selecting different windings and the required connection mode of the windings in the motor application process, widen the motor speed regulation range, improve the load capacity, realize 8 different winding connection modes, and reduce the starting current by adopting star-delta starting when the delta-connection operation is needed.
To achieve the above object, the present invention provides a variable winding switching control system including:
a controller for outputting a plurality of control signals;
the switching module is used for communicating the corresponding windings according to various control signals output by the controller;
the variable winding module is used for forming a corresponding working state according to the execution result of the switching module;
and a first terminal module and a second terminal module;
the controller is connected with the variable winding module sequentially through the first wiring terminal module, the switching module and the second wiring terminal module.
Preferably, the variable winding module includes a first coil, a second coil, a third coil, a fourth coil, a fifth coil, and a sixth coil;
the two ends of the first coil are respectively a first lead-out wire end and a second lead-out wire end; the two ends of the second coil are respectively a third lead-out wire end and a fourth lead-out wire end; the two ends of the third coil are respectively a fifth lead-out wire end and a sixth lead-out wire end; the two ends of the fourth coil are respectively a seventh lead-out terminal and an eighth lead-out terminal; the two ends of the fifth coil are respectively a ninth lead-out wire end and a tenth lead-out wire end; the two ends of the sixth coil are respectively an eleventh lead-out wire end and a twelfth lead-out wire end;
the fifth lead-out wire end, the ninth lead-out wire end, the first lead-out wire end, the second lead-out wire end, the third lead-out wire end, the sixth lead-out wire end, the seventh lead-out wire end, the tenth lead-out wire end, the eleventh lead-out wire end, the fourth lead-out wire end, the eighth lead-out wire end and the twelfth lead-out wire end are sequentially connected to the wiring terminal of the second wiring terminal module from top to bottom.
Preferably, the first wiring terminal module is a three-hole wiring terminal, and the three-hole wiring terminal is a U-phase wiring terminal, a V-phase wiring terminal and a W-phase wiring terminal which are respectively connected with the three-phase control end of the controller.
Preferably, the second lead-out terminal is short-circuited with the third lead-out terminal; the sixth lead end is in short circuit with the seventh lead end; the tenth lead-out terminal is in short circuit with the eleventh lead-out terminal;
the fourth lead-out wire end and the fifth lead-out wire end are connected with the U-phase wire end; the eighth lead-out terminal and the ninth lead-out terminal are connected with the V-phase terminal; the first lead-out terminal and the twelfth lead-out terminal are both connected to the W-phase terminal.
Preferably, the switching module includes:
a first switching switch connected between the fourth lead-out terminal and the eighth lead-out terminal;
a second change-over switch connected between the eighth lead-out terminal and the twelfth lead-out terminal;
a third change-over switch, one end of which is connected to the short-circuit point between the second lead-out wire end and the third lead-out wire end, and the other end of which is connected to the short-circuit point between the sixth lead-out wire end and the seventh lead-out wire end;
a fourth change-over switch, one end of which is connected to the short-circuit point of the sixth lead-out terminal and the seventh lead-out terminal, and the other end of which is connected to the short-circuit point of the tenth lead-out terminal and the eleventh lead-out terminal;
one end of the fifth change-over switch is connected with the fifth lead-out wire end, and the other end of the fifth change-over switch is connected with a short-circuit point between the second lead-out wire end and the third lead-out wire end;
a sixth change-over switch, one end of which is connected with the ninth lead-out line end, and the other end of which is connected with a short-circuit point between the sixth lead-out line end and the seventh lead-out line end;
a seventh change-over switch, one end of which is connected with the first lead-out wire end, and the other end of which is connected with a short-circuit point between the tenth lead-out wire end and the eleventh lead-out wire end;
an eighth change-over switch, one end of which is connected to the short-circuit point of the second lead-out terminal and the third lead-out terminal, and the other end of which is connected to the twelfth lead-out terminal;
a ninth change-over switch, one end of which is connected to the short-circuit point of the sixth lead-out terminal and the seventh lead-out terminal, and the other end of which is connected to the fourth lead-out terminal;
a tenth change-over switch, one end of which is connected to the short junction of the tenth lead-out terminal and the eleventh lead-out terminal, and the other end of which is connected to the eighth lead-out terminal;
an eleventh changeover switch connected between the fifth lead-out terminal and the U-phase terminal;
a twelfth changeover switch connected between the ninth lead-out terminal and the V-phase terminal;
a thirteenth transfer switch connected between the first lead-out terminal and the W-phase terminal;
a fourteenth change-over switch connected between the fourth lead-out terminal and the U-phase terminal;
a fifteenth change-over switch connected between the eighth lead-out terminal and the V-phase terminal;
a sixteenth change-over switch connected between the twelfth lead-out terminal and the W-phase terminal;
a seventeenth change-over switch connected between the first lead-out terminal and the fourth lead-out terminal;
an eighteenth change-over switch connected between the fifth lead-out terminal and the eighth lead-out terminal;
a nineteenth transfer switch connected between a ninth lead-out terminal and the twelfth lead-out terminal;
a twenty-first transfer switch having one end connected to a short-circuit point between the second lead-out terminal and the third lead-out terminal and the other end connected between the ninth lead-out terminal and the nineteenth transfer switch;
a twenty-first change-over switch, one end of which is connected to the short-circuit point between the sixth lead-out terminal and the seventh lead-out terminal, and the other end of which is connected between the seventeenth change-over switch and the fourth lead-out terminal;
and one end of the twenty-second change-over switch is connected with the short-circuit point of the tenth lead-out wire end and the eleventh lead-out wire end, and the other end of the twenty-second change-over switch is connected between the eighteenth change-over switch and the eighth lead-out wire end.
Preferably, the first switch, the second switch, the third switch, the fourth switch, the fifth switch, the sixth switch, the seventh switch, the eighth switch, the ninth switch, the tenth switch, the eleventh switch, the twelfth switch, the thirteenth switch, the fourteenth switch, the fifteenth switch, the sixteenth switch, the seventeenth switch, the eighteenth switch, the nineteenth switch, the twentieth switch, the twenty first switch, the twenty second switch are any combination of one of a relay and a MOSFET.
A variable winding switching control method comprising the steps of:
s1, a control signal is sent to a switching module through a controller;
s2, the switching module executes switching action according to the control signal;
s3, the variable winding module forms a corresponding working state according to the execution result of the switching module.
Preferably, the control signal in step S1 includes:
the first control signal is used for controlling the opening and closing of the first change-over switch and the second change-over switch;
the second control signal is used for controlling the opening and closing of the third change-over switch and the fourth change-over switch;
the third control signal is used for controlling the opening and closing of the fifth change-over switch, the sixth change-over switch and the seventh change-over switch;
the fourth control signal is used for controlling the opening and closing of the eighth change-over switch, the ninth change-over switch and the tenth change-over switch;
a fifth control signal for controlling the on/off of the eleventh switch, the twelfth switch and the thirteenth switch;
a sixth control signal, configured to control on/off of the fourteenth switch, the fifteenth switch, and the sixteenth switch;
a seventh control signal for controlling the on/off of the seventeenth, eighteenth and nineteenth switches;
and the eighth control signal is used for controlling the opening and closing of the twentieth change-over switch, the twenty-first change-over switch and the twenty-second change-over switch.
Preferably, the operating state in step S3 includes:
ABC star connection, according to the second control signal and fifth control signal closing third change-over switch, fourth change-over switch, eleventh change-over switch, twelfth change-over switch and thirteenth change-over switch, at this moment, one end of the first coil, one end of the third coil and one end of the fifth coil are connected, another end of the first coil, another end of the third coil and another end of the fifth coil connect U-phase wire end, V-phase wire end and W-phase wire end separately;
the XYZ star connection, the third change-over switch, the fourth change-over switch, the fourteenth change-over switch, the fifteenth change-over switch and the sixteenth change-over switch are closed according to the second control signal and the sixth control signal, at the moment, one end of the second coil, one end of the fourth coil and one end of the sixth coil are connected, and the other end of the second coil, the other end of the fourth coil and the other end of the sixth coil are respectively connected with a U-phase wire end, a V-phase wire end and a W-phase wire end;
the ABCXYZ star connection is used for closing the first change-over switch, the second change-over switch, the eleventh change-over switch, the twelfth change-over switch and the thirteenth change-over switch according to the first control signal and the fifth control signal, at the moment, one end of the first coil is connected with one end of the second coil in series, one end of the third coil is connected with one end of the fourth coil in series, one end of the fifth coil is connected with one end of the sixth coil in series, the other end of the first coil, the other end of the fifth coil and the other end of the ninth coil are respectively connected with the U-phase wire end, the V-phase wire end and the W-phase wire end, and the other end of the second coil, the other end of the fourth coil and the other end of the sixth coil are connected;
the ABC triangle is connected, the fifth change-over switch, the sixth change-over switch, the seventh change-over switch, the eleventh change-over switch, the twelfth change-over switch and the thirteenth change-over switch are closed according to the third control signal and the fifth control signal, at the moment, the first coil, the third coil and the fifth coil are connected in a tail-to-tail mode to form an ABC triangle circuit, and three vertexes of the ABC triangle circuit are connected with the U-phase connection end, the V-phase connection end and the W-phase connection end respectively;
the XYZ triangle is connected, the eighth change-over switch, the ninth change-over switch, the tenth change-over switch, the fourteenth change-over switch, the fifteenth change-over switch and the sixteenth change-over switch are closed according to the fourth control signal and the sixth control signal, at the moment, the second coil, the fourth coil and the sixth coil are connected in a tail-to-tail mode to form an XYZ triangle circuit, and three vertexes of the XYZ triangle circuit are connected with the U-phase wire end, the V-phase wire end and the W-phase wire end respectively;
the method comprises the steps of connecting an ABCXYZ triangle, closing an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch and a sixteenth switch according to a fifth control signal and a sixth control signal, wherein at the moment, a first coil and a second coil are connected in series to form a first path of an ABCXYZ triangle circuit, a third coil and a fourth coil are connected in series to form a second path of the ABCXYZ triangle circuit, a fifth coil and a sixth coil are connected in series to form a third path of the ABCXYZ triangle circuit, and the first path, the second path and the third path are connected in a tail-to-tail mode to form the ABCXYZ triangle circuit;
the ABCXYZ double star connection is used for closing a third change-over switch, a fourth change-over switch, an eleventh change-over switch, a twelfth change-over switch, a thirteenth change-over switch, a seventeenth change-over switch, an eighteenth change-over switch and a nineteenth change-over switch according to a second control signal, a fifth control signal and a seventh control signal, at the moment, a first coil and a second coil are connected in parallel to form a first path, a third coil and a fourth coil are connected in parallel to form a second path, a fifth coil and a sixth coil are connected in parallel to form a third path, one end of the first path, one end of the second path and one end of the third path are connected, and the other end of the first path, the other end of the second path and the other end of the third path are respectively connected with a U-phase wire end, a V-phase wire end and a W-phase wire end;
the ABCXYZ double-triangle connection is realized by closing a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a nineteenth switch, a twentieth switch, a twenty-first switch and a twenty-second switch according to a sixth control signal, a seventh control signal and an eighth control signal, at this time, the first coil and the second coil are connected in parallel to form a first path, the third coil and the fourth coil are connected in parallel to form a second path, the fifth coil and the sixth coil are connected in parallel to form a third path, the first path, the second path and the third path are connected in a tail-end manner to form an ABCXYZ double-triangle circuit, and three vertexes of the ABCXYZ double-triangle circuit are respectively connected with a U-phase wire end, a V-phase wire end and a W-phase wire end.
Compared with the traditional variable winding, the invention has the advantages that:
1. when the motor runs at a low speed, a larger electromagnetic torque can be obtained through selecting the coil groups, the carrying capacity is improved, meanwhile, the speed regulation range of the motor can be widened through changing the number of the coil groups, and the motor has a better application prospect;
2. the structure is simple, the operation is convenient, the selected winding and the connection mode thereof can be changed only by controlling the MCU through the upper computer, the manual change is not needed, and the winding selection and the connection mode change are realized on line;
3. the winding wiring modes can be realized in various types, and 8 different wiring modes can be realized;
4. the reliability is high, the whole circuit design adopts the most basic devices, the devices are few, the control signals are few, and the reliability of the whole system is high.
The technical scheme of the invention is further described in detail through the drawings and the embodiments.
Drawings
Fig. 1 is a schematic diagram of a coil assembly structure when the inside of a three-phase motor is in star connection;
fig. 2 is a schematic diagram of a coil assembly structure when the three-phase motor is internally connected in a triangle shape;
FIG. 3 is a schematic diagram of a circuit topology of the present invention;
FIG. 4 is a schematic diagram of an ABC star connection of the present invention;
FIG. 5 is a schematic diagram of an XYZ star connection of the present invention;
FIG. 6 is a schematic diagram of an ABCXYZ star connection of the present invention;
FIG. 7 is a schematic diagram of an ABC triangle connection of the present invention;
FIG. 8 is a schematic diagram of the XYZ triangle connection of the present invention;
FIG. 9 is a schematic representation of an ABCXYZ triangle connection of the present invention;
FIG. 10 is a schematic diagram of an ABCXYZ double star connection of the present invention;
FIG. 11 is a schematic representation of an ABCXYZ double triangle connection of the present invention.
Detailed Description
The present invention will be further described with reference to the accompanying drawings, and it should be noted that, while the present embodiment provides a detailed implementation and a specific operation process on the premise of the present technical solution, the protection scope of the present invention is not limited to the present embodiment.
A variable winding switching control system comprising:
a controller for outputting a plurality of control signals;
the switching module is used for communicating the corresponding windings according to various control signals output by the controller;
the variable winding module is used for forming a corresponding working state according to the execution result of the switching module;
and a first connection terminal module J1 and a second connection terminal module J2;
the controller is connected with the variable winding module through a first wiring terminal module J1, a switching module and a second wiring terminal module J2 in sequence.
Specifically, the variable winding module comprises a first coil A, a second coil B, a third coil C, a fourth coil X, a fifth coil Y and a sixth coil Z; the two ends of the first coil A are respectively provided with a first lead-out terminal 1 and a second lead-out terminal 2; the two ends of the second coil B are respectively provided with a third lead-out terminal 3 and a fourth lead-out terminal 4; the two ends of the third coil C are respectively provided with a fifth lead-out terminal 5 and a sixth lead-out terminal 6; the two ends of the fourth coil X are respectively provided with a seventh lead-out terminal 7 and an eighth lead-out terminal 8; the two ends of the fifth coil Y are respectively a ninth lead-out terminal 9 and a tenth lead-out terminal 10; the two ends of the sixth coil Z are respectively an eleventh lead-out terminal 11 and a twelfth lead-out terminal 12; the fifth lead terminal 5, the ninth lead terminal 9, the first lead terminal 1, the second lead terminal 2, the third lead terminal 3, the sixth lead terminal 6, the seventh lead terminal 7, the tenth lead terminal 10, the eleventh lead terminal 11, the fourth lead terminal 4, the eighth lead terminal 8, and the twelfth lead terminal 12 are sequentially connected to the connection terminal of the second connection terminal module J2 from top to bottom.
Preferably, the first terminal module J 1 The three-hole wiring terminal is a U-phase wiring terminal, a V-phase wiring terminal and a W-phase wiring terminal which are respectively connected with the three-phase control end of the controller.
Preferably, the second lead terminal 2 is shorted with the third lead terminal 3; the sixth lead-out terminal 6 is short-circuited with the seventh lead-out terminal 7; the tenth lead-out terminal 10 is short-circuited with the eleventh lead-out terminal 11; the fourth lead-out terminal 4 and the fifth lead-out terminal 5 are connected with the U-phase terminal; the eighth lead-out terminal 8 and the ninth lead-out terminal 9 are connected with the V-phase terminal; the first lead terminal 1 and the twelfth lead terminal 12 are connected to the W-phase terminal.
Preferably, the switching module includes:
first change-over switch S 1 Connected withIs connected between the fourth lead-out terminal 4 and the eighth lead-out terminal 8;
second change-over switch S 2 Which is connected between the eighth lead-out terminal 8 and the twelfth lead-out terminal 12;
third change-over switch S 3 One end of the first connecting wire is connected with the short joint of the second lead-out wire end 2 and the third lead-out wire end 3, and the other end of the first connecting wire is connected with the short joint of the sixth lead-out wire end 6 and the seventh lead-out wire end 7;
fourth change-over switch S 4 One end of the first connecting wire is connected with the short-circuit point of the sixth lead-out wire end 6 and the seventh lead-out wire end 7, and the other end of the first connecting wire is connected with the short-circuit point of the tenth lead-out wire end 10 and the eleventh lead-out wire end 11;
fifth change-over switch S 5 One end of the first connecting wire is connected with a fifth lead-out wire end 5, and the other end of the first connecting wire is connected with a short joint of the second lead-out wire end 2 and the third lead-out wire end 3;
sixth change-over switch S 6 One end of the first connecting wire is connected with a ninth lead wire end 9, and the other end of the first connecting wire is connected with a short joint of the sixth lead wire end 6 and the seventh lead wire end 7;
seventh change-over switch S 7 One end of the first lead-out wire is connected with the first lead-out wire end 1, and the other end of the first lead-out wire is connected with a short-circuit point between the tenth lead-out wire end 10 and the eleventh lead-out wire end 11;
eighth change-over switch S 8 One end of the first connecting wire is connected with the short joint of the second leading-out wire end 2 and the third leading-out wire end 3, and the other end of the first connecting wire is connected with the twelfth leading-out wire end 12;
ninth change-over switch S 9 One end of the first connecting wire is connected with a short joint of the sixth leading-out wire end 6 and the seventh leading-out wire end 7, and the other end of the first connecting wire is connected with the fourth leading-out wire end 4;
tenth change-over switch S 10 One end of the first connecting wire is connected with a short-circuit point between the tenth lead-out wire end 10 and the eleventh lead-out wire end 11, and the other end of the first connecting wire is connected with the eighth lead-out wire end 8;
eleventh change-over switch S 11 Which is connected between the fifth lead-out terminal 5 and the U-phase terminal;
twelfth change-over switch S 12 Which is connected between the ninth lead-out terminal 9 and the V-phase terminal;
thirteenth change-over switch S 13 Which is connected between the first lead terminal 1 and the W-phase terminal;
fourteenth switch S 14 Which is connected between the fourth lead terminal 4 and the U-phase terminal;
fifteenth switch S 15 Which is connected between the eighth lead-out terminal 8 and the V-phase terminal;
sixteenth change-over switch S 16 Which is connected between the twelfth lead-out terminal 12 and the W-phase terminal;
seventeenth change-over switch S 17 Which is connected between the first lead terminal 1 and the fourth lead terminal 4;
eighteenth change-over switch S 18 Which is connected between the fifth lead-out terminal 5 and the eighth lead-out terminal 8;
nineteenth change-over switch S 19 Which is connected between the ninth lead-out terminal 9 and the twelfth lead-out terminal 12;
twentieth change-over switch S 20 One end of the switch is connected with the short-circuit points of the second leading-out wire end 2 and the third leading-out wire end 3, and the other end is connected with the ninth leading-out wire end 9 and the nineteenth change-over switch S 19 Between them;
twenty-first change-over switch S 21 One end of the switch is connected to the short-circuit point of the sixth lead-out terminal 6 and the seventh lead-out terminal 7, and the other end is connected to a seventeenth switch S 17 And the fourth lead terminal 4;
twenty-second change-over switch S 22 One end of the switch is connected with the short-circuit point of the tenth leading-out terminal 10 and the eleventh leading-out terminal 11, and the other end is connected with an eighteenth change-over switch S 18 And the eighth lead terminal 8.
Preferably, a first switch S 1 Second change-over switch S 2 Third change-over switch S 3 Fourth change-over switch S 4 Fifth change-over switch S 5 Sixth change-over switch S 6 Seventh change-over switch S 7 Eighth change-over switch S 8 Ninth change-over switch S 9 Tenth change-over switch S 10 Eleventh change-over switch S 11 Twelfth switchSwitch S 12 Thirteenth switch S 13 Fourteenth switch S 14 Fifteenth switch S 15 Sixteenth change-over switch S 16 Seventeenth change-over switch S 17 Eighteenth change-over switch S 18 Nineteenth change-over switch S 19 Twentieth change-over switch S 20 Twenty-first switch S 21 Twenty-second change-over switch S 22 Are one of a relay and a MOSFET and any combination thereof.
A variable winding switching control method comprising the steps of:
s1, a control signal is sent to a switching module through a controller;
preferably, the control signal of step S1 includes:
a first control signal for controlling the first switch S 1 And a second change-over switch S 2 Is opened and closed;
a second control signal for controlling the third switch S 3 And a fourth change-over switch S 4 Is opened and closed;
a third control signal for controlling the fifth change-over switch S 5 Sixth change-over switch S 6 And a seventh change-over switch S 7 Is opened and closed;
a fourth control signal for controlling the eighth switch S 8 Ninth change-over switch S 9 And a tenth change-over switch S 10 Is opened and closed;
a fifth control signal for controlling the eleventh switch S 11 Twelfth change-over switch S 12 And a thirteenth change-over switch S 13 Is opened and closed;
a sixth control signal for controlling the fourteenth switch S 14 Fifteenth switch S 15 And a sixteenth change-over switch S 16 Is opened and closed;
a seventh control signal for controlling the seventeenth switch S 17 Eighteenth change-over switch S 18 And a nineteenth switch S 19 Is opened and closed;
an eighth control signal for controlling the twentieth switch S 20 Twenty-first switch S 21 And a twenty-second change-over switch S 22 Is opened and closed.
S2, the switching module executes switching action according to the control signal;
s3, the variable winding module forms a corresponding working state according to the execution result of the switching module.
Preferably, the operating state of step S3 includes:
ABC star connection for closing the third switch S according to the second control signal and the fifth control signal 3 Fourth change-over switch S 4 Eleventh change-over switch S 11 Twelfth change-over switch S 12 And a thirteenth change-over switch S 13 At this time, one end of the first coil a, one end of the third coil C and one end of the fifth coil Y are connected, and the other end of the first coil a, the other end of the third coil C and the other end of the fifth coil Y are connected to the U-phase wire end, the V-phase wire end and the W-phase wire end, respectively;
XYZ star connection for closing the third switch S in response to the second and sixth control signals 3 Fourth change-over switch S 4 Fourteenth switch S 14 Fifteenth switch S 15 And a sixteenth change-over switch S 16 At this time, one end of the second coil B, one end of the fourth coil X and one end of the sixth coil Z are connected, and the other end of the second coil B, the other end of the fourth coil X and the other end of the sixth coil Z are connected to the U-phase wire end, the V-phase wire end and the W-phase wire end, respectively;
ABCXYZ star connection for closing the first switch S according to the first control signal and the fifth control signal 1 Second change-over switch S 2 Eleventh change-over switch S 11 Twelfth change-over switch S 12 And a thirteenth change-over switch S 13 At this time, one end of the first coil A is connected in series with one end of the second coil B, one end of the third coil C is connected in series with one end of the fourth coil X, one end of the fifth coil Y is connected in series with one end of the sixth coil Z, the other end of the first coil A, the other end of the fifth coil Y and the other end of the ninth coil are connected with the U-phase wire end, the V-phase wire end and the W-phase wire end respectively, the second coilThe other end of the coil B, the other end of the fourth coil X and the other end of the sixth coil Z are connected;
ABC triangle connection, closing the fifth change-over switch S according to the third control signal and the fifth control signal 5 Sixth change-over switch S 6 Seventh change-over switch S 7 Eleventh change-over switch S 11 Twelfth change-over switch S 12 And a thirteenth change-over switch S 13 At the moment, the first coil A, the third coil C and the fifth coil Y are connected in a tail-end mode to form an ABC triangle circuit, and three vertexes of the ABC triangle circuit are connected with a U-phase connection end, a V-phase connection end and a W-phase connection end respectively;
XYZ triangle connection, closing the eighth switch S according to the fourth control signal and the sixth control signal 8 Ninth change-over switch S 9 Tenth change-over switch S 10 Fourteenth switch S 14 Fifteenth switch S 15 And a sixteenth change-over switch S 16 At this time, the second coil B, the fourth coil X and the sixth coil Z are connected end to form an XYZ triangle circuit, and three vertexes of the XYZ triangle circuit are connected with the U-phase connection terminal, the V-phase connection terminal and the W-phase connection terminal, respectively;
ABCXYZ triangle connection, according to fifth control signal and sixth control signal, closes eleventh change over switch S 11 Twelfth change-over switch S 12 Thirteenth switch S 13 Fourteenth switch S 14 Fifteenth switch S 15 And a sixteenth change-over switch S 16 At the moment, a first path of an ABCXYZ triangular circuit is formed after the first coil A and the second coil B are connected in series, a second path of the ABCXYZ triangular circuit is formed after the third coil C and the fourth coil X are connected in series, a third path of the ABCXYZ triangular circuit is formed after the fifth coil Y and the sixth coil Z are connected in series, and the first path, the second path and the third path are connected in a tail-to-tail mode to form the ABCXYZ triangular circuit;
ABCXYZ double star connection, closing the third switch S according to the second control signal, the fifth control signal and the seventh control signal 3 Fourth change-over switch S 4 Eleventh change-over switch S 11 Twelfth change-over switch S 12 Thirteenth switch offSwitch S 13 Seventeenth change-over switch S 17 Eighteenth change-over switch S 18 And a nineteenth switch S 19 At this time, the first coil A and the second coil B are connected in parallel to form a first path, the third coil C and the fourth coil X are connected in parallel to form a second path, the fifth coil Y and the sixth coil Z are connected in parallel to form a third path, one end of the first path, one end of the second path and one end of the third path are connected, and the other end of the first path, the other end of the second path and the other end of the third path are respectively connected with a U-phase wire end, a V-phase wire end and a W-phase wire end;
ABCXYZ double triangle connection, closing fourteenth change-over switch S according to sixth control signal, seventh control signal and eighth control signal 14 Fifteenth switch S 15 Sixteenth change-over switch S 16 Seventeenth change-over switch S 17 Eighteenth change-over switch S 18 Nineteenth change-over switch S 19 Twentieth change-over switch S 20 Twenty-first switch S 21 And a twenty-second change-over switch S 22 At this time, the first coil A and the second coil B are connected in parallel to form a first path, the third coil C and the fourth coil X are connected in parallel to form a second path, the fifth coil Y and the sixth coil Z are connected in parallel to form a third path, the first path, the second path and the third path are connected in a tail-end manner to form an ABCXYZ double-triangle circuit, and three vertexes of the ABCXYZ double-triangle circuit are respectively connected with a U-phase connection terminal, a V-phase connection terminal and a W-phase connection terminal.
Therefore, the variable winding switching control system and the variable winding switching control method can provide convenience for selecting different windings and the required winding connection mode in the motor application process, widen the motor speed regulation range and improve the load capacity.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention and not for limiting it, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that: the technical scheme of the invention can be modified or replaced by the same, and the modified technical scheme cannot deviate from the spirit and scope of the technical scheme of the invention.
Claims (9)
1. A variable winding switching control system characterized by: comprising the following steps:
a controller for outputting a plurality of control signals;
the switching module is used for communicating the corresponding windings according to various control signals output by the controller;
the variable winding module is used for forming a corresponding working state according to the execution result of the switching module;
and a first terminal module and a second terminal module;
the controller is connected with the variable winding module sequentially through the first wiring terminal module, the switching module and the second wiring terminal module.
2. A variable winding switching control system according to claim 1, wherein: the variable winding module comprises a first coil, a second coil, a third coil, a fourth coil, a fifth coil and a sixth coil;
the two ends of the first coil are respectively a first lead-out wire end and a second lead-out wire end; the two ends of the second coil are respectively a third lead-out wire end and a fourth lead-out wire end; the two ends of the third coil are respectively a fifth lead-out wire end and a sixth lead-out wire end; the two ends of the fourth coil are respectively a seventh lead-out terminal and an eighth lead-out terminal; the two ends of the fifth coil are respectively a ninth lead-out wire end and a tenth lead-out wire end; the two ends of the sixth coil are respectively an eleventh lead-out wire end and a twelfth lead-out wire end;
the fifth lead-out wire end, the ninth lead-out wire end, the first lead-out wire end, the second lead-out wire end, the third lead-out wire end, the sixth lead-out wire end, the seventh lead-out wire end, the tenth lead-out wire end, the eleventh lead-out wire end, the fourth lead-out wire end, the eighth lead-out wire end and the twelfth lead-out wire end are sequentially connected to the wiring terminal of the second wiring terminal module from top to bottom.
3. A variable winding switching control system according to claim 2, wherein: the first wiring terminal module is a three-hole wiring terminal, and the three-hole wiring terminal is a U-phase wiring terminal, a V-phase wiring terminal and a W-phase wiring terminal which are respectively connected with a three-phase control end of the controller.
4. A variable winding switching control system according to claim 3, wherein: the second lead-out terminal is in short circuit with the third lead-out terminal; the sixth lead end is in short circuit with the seventh lead end; the tenth lead-out terminal is in short circuit with the eleventh lead-out terminal;
the fourth lead-out wire end and the fifth lead-out wire end are connected with the U-phase wire end; the eighth lead-out terminal and the ninth lead-out terminal are connected with the V-phase terminal; the first lead-out terminal and the twelfth lead-out terminal are both connected to the W-phase terminal.
5. A variable winding switching control system according to claim 4, wherein: the switching module comprises:
a first switching switch connected between the fourth lead-out terminal and the eighth lead-out terminal;
a second change-over switch connected between the eighth lead-out terminal and the twelfth lead-out terminal;
a third change-over switch, one end of which is connected to the short-circuit point between the second lead-out wire end and the third lead-out wire end, and the other end of which is connected to the short-circuit point between the sixth lead-out wire end and the seventh lead-out wire end;
a fourth change-over switch, one end of which is connected to the short-circuit point of the sixth lead-out terminal and the seventh lead-out terminal, and the other end of which is connected to the short-circuit point of the tenth lead-out terminal and the eleventh lead-out terminal;
one end of the fifth change-over switch is connected with the fifth lead-out wire end, and the other end of the fifth change-over switch is connected with a short-circuit point between the second lead-out wire end and the third lead-out wire end;
a sixth change-over switch, one end of which is connected with the ninth lead-out line end, and the other end of which is connected with a short-circuit point between the sixth lead-out line end and the seventh lead-out line end;
a seventh change-over switch, one end of which is connected with the first lead-out wire end, and the other end of which is connected with a short-circuit point between the tenth lead-out wire end and the eleventh lead-out wire end;
an eighth change-over switch, one end of which is connected to the short-circuit point of the second lead-out terminal and the third lead-out terminal, and the other end of which is connected to the twelfth lead-out terminal;
a ninth change-over switch, one end of which is connected to the short-circuit point of the sixth lead-out terminal and the seventh lead-out terminal, and the other end of which is connected to the fourth lead-out terminal;
a tenth change-over switch, one end of which is connected to the short junction of the tenth lead-out terminal and the eleventh lead-out terminal, and the other end of which is connected to the eighth lead-out terminal;
an eleventh changeover switch connected between the fifth lead-out terminal and the U-phase terminal;
a twelfth changeover switch connected between the ninth lead-out terminal and the V-phase terminal;
a thirteenth transfer switch connected between the first lead-out terminal and the W-phase terminal;
a fourteenth change-over switch connected between the fourth lead-out terminal and the U-phase terminal;
a fifteenth change-over switch connected between the eighth lead-out terminal and the V-phase terminal;
a sixteenth change-over switch connected between the twelfth lead-out terminal and the W-phase terminal;
a seventeenth change-over switch connected between the first lead-out terminal and the fourth lead-out terminal;
an eighteenth change-over switch connected between the fifth lead-out terminal and the eighth lead-out terminal;
a nineteenth transfer switch connected between a ninth lead-out terminal and the twelfth lead-out terminal;
a twenty-first transfer switch having one end connected to a short-circuit point between the second lead-out terminal and the third lead-out terminal and the other end connected between the ninth lead-out terminal and the nineteenth transfer switch;
a twenty-first change-over switch, one end of which is connected to the short-circuit point between the sixth lead-out terminal and the seventh lead-out terminal, and the other end of which is connected between the seventeenth change-over switch and the fourth lead-out terminal;
and one end of the twenty-second change-over switch is connected with the short-circuit point of the tenth lead-out wire end and the eleventh lead-out wire end, and the other end of the twenty-second change-over switch is connected between the eighteenth change-over switch and the eighth lead-out wire end.
6. A variable winding switching control system according to claim 5, wherein: the first, second, third, fourth, fifth, sixth, seventh, eighth, ninth, tenth, eleventh, twelfth, thirteenth, fourteenth, fifteenth, sixteenth, seventeenth, twentieth, twenty second, and any combination thereof are all one of a relay, a MOSFET, and any combination thereof.
7. A variable winding switching control method is characterized in that: the method comprises the following steps:
s1, a control signal is sent to a switching module through a controller;
s2, the switching module executes switching action according to the control signal;
s3, the variable winding module forms a corresponding working state according to the execution result of the switching module.
8. The variable winding switching control method according to claim 7, characterized in that: the control signal of step S1 includes:
the first control signal is used for controlling the opening and closing of the first change-over switch and the second change-over switch;
the second control signal is used for controlling the opening and closing of the third change-over switch and the fourth change-over switch;
the third control signal is used for controlling the opening and closing of the fifth change-over switch, the sixth change-over switch and the seventh change-over switch;
the fourth control signal is used for controlling the opening and closing of the eighth change-over switch, the ninth change-over switch and the tenth change-over switch;
a fifth control signal for controlling the on/off of the eleventh switch, the twelfth switch and the thirteenth switch;
a sixth control signal, configured to control on/off of the fourteenth switch, the fifteenth switch, and the sixteenth switch;
a seventh control signal for controlling the on/off of the seventeenth, eighteenth and nineteenth switches;
and the eighth control signal is used for controlling the opening and closing of the twentieth change-over switch, the twenty-first change-over switch and the twenty-second change-over switch.
9. The variable winding switching control method according to claim 7, characterized in that: the working state of step S3 includes:
ABC star connection, according to the second control signal and fifth control signal closing third change-over switch, fourth change-over switch, eleventh change-over switch, twelfth change-over switch and thirteenth change-over switch, at this moment, one end of the first coil, one end of the third coil and one end of the fifth coil are connected, another end of the first coil, another end of the third coil and another end of the fifth coil connect U-phase wire end, V-phase wire end and W-phase wire end separately;
the XYZ star connection, the third change-over switch, the fourth change-over switch, the fourteenth change-over switch, the fifteenth change-over switch and the sixteenth change-over switch are closed according to the second control signal and the sixth control signal, at the moment, one end of the second coil, one end of the fourth coil and one end of the sixth coil are connected, and the other end of the second coil, the other end of the fourth coil and the other end of the sixth coil are respectively connected with a U-phase wire end, a V-phase wire end and a W-phase wire end;
the ABCXYZ star connection is used for closing the first change-over switch, the second change-over switch, the eleventh change-over switch, the twelfth change-over switch and the thirteenth change-over switch according to the first control signal and the fifth control signal, at the moment, one end of the first coil is connected with one end of the second coil in series, one end of the third coil is connected with one end of the fourth coil in series, one end of the fifth coil is connected with one end of the sixth coil in series, the other end of the first coil, the other end of the fifth coil and the other end of the ninth coil are respectively connected with the U-phase wire end, the V-phase wire end and the W-phase wire end, and the other end of the second coil, the other end of the fourth coil and the other end of the sixth coil are connected;
the ABC triangle is connected, the fifth change-over switch, the sixth change-over switch, the seventh change-over switch, the eleventh change-over switch, the twelfth change-over switch and the thirteenth change-over switch are closed according to the third control signal and the fifth control signal, at the moment, the first coil, the third coil and the fifth coil are connected in a tail-to-tail mode to form an ABC triangle circuit, and three vertexes of the ABC triangle circuit are connected with the U-phase connection end, the V-phase connection end and the W-phase connection end respectively;
the XYZ triangle is connected, the eighth change-over switch, the ninth change-over switch, the tenth change-over switch, the fourteenth change-over switch, the fifteenth change-over switch and the sixteenth change-over switch are closed according to the fourth control signal and the sixth control signal, at the moment, the second coil, the fourth coil and the sixth coil are connected in a tail-to-tail mode to form an XYZ triangle circuit, and three vertexes of the XYZ triangle circuit are connected with the U-phase wire end, the V-phase wire end and the W-phase wire end respectively;
the method comprises the steps of connecting an ABCXYZ triangle, closing an eleventh switch, a twelfth switch, a thirteenth switch, a fourteenth switch, a fifteenth switch and a sixteenth switch according to a fifth control signal and a sixth control signal, wherein at the moment, a first coil and a second coil are connected in series to form a first path of an ABCXYZ triangle circuit, a third coil and a fourth coil are connected in series to form a second path of the ABCXYZ triangle circuit, a fifth coil and a sixth coil are connected in series to form a third path of the ABCXYZ triangle circuit, and the first path, the second path and the third path are connected in a tail-to-tail mode to form the ABCXYZ triangle circuit;
the ABCXYZ double star connection is used for closing a third change-over switch, a fourth change-over switch, an eleventh change-over switch, a twelfth change-over switch, a thirteenth change-over switch, a seventeenth change-over switch, an eighteenth change-over switch and a nineteenth change-over switch according to a second control signal, a fifth control signal and a seventh control signal, at the moment, a first coil and a second coil are connected in parallel to form a first path, a third coil and a fourth coil are connected in parallel to form a second path, a fifth coil and a sixth coil are connected in parallel to form a third path, one end of the first path, one end of the second path and one end of the third path are connected, and the other end of the first path, the other end of the second path and the other end of the third path are respectively connected with a U-phase wire end, a V-phase wire end and a W-phase wire end;
the ABCXYZ double-triangle connection is realized by closing a fourteenth switch, a fifteenth switch, a sixteenth switch, a seventeenth switch, an eighteenth switch, a nineteenth switch, a twentieth switch, a twenty-first switch and a twenty-second switch according to a sixth control signal, a seventh control signal and an eighth control signal, at this time, the first coil and the second coil are connected in parallel to form a first path, the third coil and the fourth coil are connected in parallel to form a second path, the fifth coil and the sixth coil are connected in parallel to form a third path, the first path, the second path and the third path are connected in a tail-end manner to form an ABCXYZ double-triangle circuit, and three vertexes of the ABCXYZ double-triangle circuit are respectively connected with a U-phase wire end, a V-phase wire end and a W-phase wire end.
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| CN202310096851.XA CN116436370A (en) | 2023-02-10 | 2023-02-10 | Variable winding switching control system and method |
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