CN115642730B - Multi-pole slot group permanent magnet motor and control method thereof - Google Patents
Multi-pole slot group permanent magnet motor and control method thereof Download PDFInfo
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- CN115642730B CN115642730B CN202211661082.5A CN202211661082A CN115642730B CN 115642730 B CN115642730 B CN 115642730B CN 202211661082 A CN202211661082 A CN 202211661082A CN 115642730 B CN115642730 B CN 115642730B
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Abstract
The invention relates to the technical field of motors, in particular to a multi-pole slot group permanent magnet motor and a control method thereof. The problem of energy consumption of the motor in a full-power super-fundamental frequency operation interval is solved. The technical scheme is as follows: the permanent magnet motor is characterized in that armature windings distributed in all tooth slots are stacked according to the type of coils of in-phase slot windings to form a plurality of in-phase slot armature windings using partial tooth slots respectively, the armature windings stacked according to the type of coils of out-phase slot windings to form a plurality of out-phase slot armature windings using partial tooth slots respectively, the in-phase slot windings and the out-phase slot windings are formed into in-phase and out-phase slot mixed armature windings using partial tooth slots, the in-phase and out-phase slot mixed armature windings and the number of pole pairs of a rotor form various pole-slot ratio combinations respectively, and electromagnetic motion is independently or jointly implemented under the regulation and control of an armature controller. The beneficial effects of the invention are as follows: the permanent magnet motor can realize high-efficiency operation of the super fundamental frequency multiple level under various magnetic field conditions.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a multi-pole slot group permanent magnet motor and a control method thereof.
Background
The conventional permanent magnet motor is designed with only one armature winding with a pole-slot ratio to meet the application requirement of universality in the industrial field, the highest efficiency area of the motor is usually in the interval near the rated power and the rated rotating speed, the conventional permanent magnet motor driver adopts a constant-power weak magnet control method to enable the motor to operate at the over-rated rotating speed, the weak magnet control method needs larger current to reduce the energy consumption and the efficiency of the motor, and certain industrial working conditions need the high-efficiency operation of the motor in the full-power interval and also need the permanent magnet motor to have the high rotating speed performance which is several times higher than the rated rotating speed and the fault-tolerant safety function of multiple windings of the motor.
Disclosure of Invention
This section is for the purpose of summarizing some aspects of embodiments of the invention and to briefly introduce some preferred embodiments. In this section, as well as in the abstract and the title of the invention of this application, simplifications or omissions may be made to avoid obscuring the purpose of the section, the abstract and the title, and such simplifications or omissions are not intended to limit the scope of the invention.
Therefore, the invention aims to provide a multi-pole slot group permanent magnet motor and a control method thereof, which can meet the requirements of special complex working conditions on the high-efficiency and high-speed performance and the fault-tolerant function of the permanent magnet motor, provide a technical solution for the working condition application requirements of high-frequency torque and rotating speed change, and particularly have special application values in the industries of aircraft and marine electric propulsion systems, new energy electric vehicle power systems, wind and hydraulic power generation and energy storage systems, turbine machinery industry, intelligent continuous operation equipment and the like.
In order to solve the technical problems, the invention provides the following technical scheme:
the multi-pole slot group permanent magnet motor is characterized by comprising: the permanent magnet motor is characterized in that armature windings distributed in all tooth spaces of a stator are stacked according to the type of coils of in-phase slot windings to form a plurality of in-phase slot armature windings using partial tooth spaces respectively, the armature windings stacked according to the type of coils of out-phase slot windings to form a plurality of out-phase slot armature windings using partial tooth spaces respectively, the in-phase slot windings and the out-phase slot windings are stacked to form an in-phase and out-phase slot mixed armature winding using partial tooth spaces, the in-phase and out-phase slot mixed armature winding and a rotor determining the number of pole pairs of the rotor form a combination of multiple pole-slot ratios respectively, the armature windings of multiple pole-slot groups meet the requirements of uniform distribution of electric angles and the matching of the electric angles and the slot pole ratios of the rotor, and electromagnetic motion is independently or jointly implemented under the regulation and control of an armature controller.
The multi-pole slot group motor stator is composed of armature windings with different levels, different types and unequal numbers, the first level armature winding is composed of all stator tooth slots, more than one same-phase slot armature winding, out-of-phase slot armature windings and mixed armature windings of the same-phase and out-of-phase slots, and the second level and the secondary level of the same level of the armature windings respectively reduce the use of the tooth slots and phase winding coils with unequal numbers compared with the previous level of the same type of the armature windings; the armature windings of each level and the like comprise cross-level armature windings which are respectively formed by different levels of in-phase slot windings and out-phase slot windings, and comprise cross-level in-phase and out-phase slot mixed armature windings which are formed by different levels of in-phase slot windings and out-phase slot windings together; the number of tooth slots occupied by armature windings of various pole slot groups of the motor is the number of tooth slots actually used by the armature windings, and the tooth slots comprise an upper layer winding and/or a lower layer winding.
As a preferable aspect of the multi-pole slot group permanent magnet motor according to the present invention, wherein: the number of phases of the armature winding is three phases or more than a multiple of one phase, and independent multi-phase armature windings are respectively formed according to the types of the mixed windings of the same-phase slots, the different-phase slots and the same-phase different-phase slots.
As a preferable aspect of the multi-pole slot group permanent magnet motor according to the present invention, wherein: the number of magnetic poles of the rotor of the motor and the total number of slots of the stator meet the condition that z/2pm = q is a positive integer, wherein z is the number of slots, p is the number of pole pairs, m is the number of phases, the slot pole ratio of the armature winding to the number of the pole pairs of the rotor comprises integer slots and fractional slots,
in practical application, when the combination scheme of different armature windings is determined according to working conditions, the applicable integer slots or fractional slots are preferably adopted.
As a preferable aspect of the multi-pole slot group permanent magnet motor of the present invention, wherein: the number of the pole pairs of the motor rotor is a pair of poles or a multiple of the pole pairs, and the number of the pole pairs comprises a plurality of types of rotor bodies with different numbers, wherein the rotor bodies run around a stator armature winding together by an inner rotor and an outer rotor in a radial compounding mode and an axial compounding mode.
As a preferable aspect of the multi-pole slot group permanent magnet motor of the present invention, wherein: each independent armature winding is connected in a star shape and/or an angle shape; the armature winding branches of the multi-pole slot groups of different motors are connected in parallel or in series in more than one way, the coil pitches of the armature winding of the multi-pole slot groups of different motors are combined in a plurality of ways, the armature winding wiring of the multi-pole slot groups of different motors is sequentially distributed in the wire embedding slots in a double-layer lap winding mode and distributed around the circle center of the stator, the number of turns and the wire diameter of the coil are the same or different, the coil is made of solid or hollow conductive materials, and the coil is made of circular or rectangular conductive materials.
The control method of the multi-pole slot group permanent magnet motor comprises the following steps: a power semiconductor switch device or other types of switch devices of the armature controller are connected with the coil head end and tail end preset circuits of the armature winding; the switching device is connected with the armature winding phase winding preset star-shaped and/or horn-shaped circuit; and the switching device is connected with each armature winding in a switching circuit preset way.
As a preferable aspect of the method for controlling a permanent magnet motor having a multi-pole slot group according to the present invention, wherein: the load side inductor feeds back the load working condition to the armature controller, the armature controller selects a preset armature winding mode to be adopted to conduct or cut off the switching device, the corresponding coil and the phase winding of the coil, circuit switching among the selected armature windings is implemented, and the armature controller instructs the motor inverter driver to implement adaptive motor control parameter change and driving; when a plurality of armature windings of the multi-pole slot group work in a combined mode, the controller switching device conducts circuits to the head end and the tail end of the associated coil and the phase winding of the associated coil, and the coil switching device of the armature winding which does not work or the switching device of the wiring at the tail end of the winding are turned off.
As a preferable aspect of the method for controlling a permanent magnet motor having a multi-pole slot group according to the present invention, the method includes: the armature controller and the armature winding adopt control modes including but not limited to connection, conduction, disconnection and the like of electric, circuit, electromagnetic, electric and the like devices which are used singly or in a mixed mode.
A multi-pole slot group permanent magnet motor comprises a motor and a generator.
Compared with the prior art, the invention has the beneficial effects that:
the multi-pole slot group permanent magnet motor provided by the invention has multiple pole slot ratio combined armature windings, each armature winding has different counter electromotive forces, when the same voltage is input by a driver, different armature windings have the performance of different rated rotating speeds in successive times, high-proportion rotating speed operation exceeding the fundamental frequency rotating speed of the first-level same-phase and different-phase slot mixed armature winding is implemented, the requirements of special complex working conditions on the high-efficiency high-speed performance and the fault-tolerant function of the permanent magnet motor are met, and a technical solution is provided for the working condition application requirements of high-frequency torque and rotating speed change.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below with reference to the accompanying drawings and detailed embodiments, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive labor. Wherein:
FIG. 1 is a schematic view of a multi-pole slot set armature winding of the present invention;
FIG. 2 is a schematic diagram of a multi-pole slot set armature switch control circuit of the present invention;
FIG. 3 is a schematic diagram of an eighteen-phase armature winding of the present invention;
fig. 4 is a schematic diagram of an eighteen-phase armature winding switch control circuit of the present invention.
In the figure, 301-a first level twenty-four different phase slot armature winding; 302-a first level of seventy-two in-phase slot armature windings; 303-a first-level mixed armature winding with ninety-six same-phase and different-phase slots; 304-a second level of twelve distinct phase slot armature windings; 305-a second tier forty-eight in-phase slot armature winding; 306-a second level of sixty-phase slot hybrid armature windings; 307-cross-layer grade seventy-two same phase slot hybrid armature winding; 308-cross-layer grade thirty-six same-phase and different-phase slot hybrid armature winding; 309-armature controller.
The number of the tooth slots is counted by the number of upper-layer coils of the same type of armature windings in the slot; in fig. 1: the tooth sockets marked by UU, VV and WW are in-phase slots, and the tooth sockets marked by any two letter combinations of U, V and W are out-of-phase slots.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanying figures are described in detail below.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described herein, and it will be apparent to those of ordinary skill in the art that the present invention may be practiced without departing from the spirit and scope of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
Next, the present invention is described in detail with reference to the drawings, and in the detailed description of the embodiments of the present invention, the cross-sectional view illustrating the structure of the device is not enlarged partially in general scale for the convenience of illustration, and the drawings are only exemplary, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in the actual fabrication.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Referring to fig. 1, a schematic diagram of an armature winding of a multi-pole slot set is shown, taking an octapole ninety-six slot multi-pole slot set permanent magnet motor as an example, according to the manufacturing method of the present application, the armature winding of a stator of the motor at least includes four levels of twelve independent armature windings and nine cross-level same-phase and different-phase slot mixed armature windings. The present embodiment is specifically described by taking, as an example, a first-stage twenty-four different-phase slot armature winding 301, a first-stage seventy-two same-phase slot armature winding 302, a first-stage ninety-six same-phase slot hybrid armature winding 303, a second-stage twelve different-phase slot armature winding 304, a second-stage forty-eight same-phase slot armature winding 305, a second-stage sixty different-phase slot hybrid armature winding 306, a cross-stage seventy-two same-phase different-phase slot hybrid armature winding 307, and a cross-stage thirty-six same-phase slot hybrid armature winding 308.
The first-level twenty-four different-phase slot armature winding 301 includes twenty-four different-phase slot coils, each phase winding of the three-phase winding includes eight coils, and the connection sequence of each phase coil is as follows:
and (3) U-phase winding: u4 is connected with U16, U16 is connected with U28, U28 is connected with U40, U40 is connected with U52, U52 is connected with U64, U64 is connected with U76, and U76 is connected with U88;
a V-phase winding: v12 is connected with V24, V24 is connected with V36, V36 is connected with V48, V48 is connected with V60, V60 is connected with V72, V72 is connected with V84, and V84 is connected with V96;
w-phase winding: w8 connects W20, W20 connects W32, W32 connects W44, W44 connects W56, W56 connects W68, W68 connects W80, W80 connects W92.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star points or in an angle shape according to working condition requirements, and a first-level twenty-four different-phase slot armature winding 301 is formed.
The first-level seventy-two in-phase slot armature winding 302 comprises seventy-two in-phase slot coils, each phase winding of the three-phase winding comprises twenty-four coils, and the connection sequence of the coils of each phase is as follows:
and (3) U-phase winding: u1 connects U2, U2 connects U3, U3 connects U13, U13 connects U14, U14 connects U15, U15 connects U25, U25 connects U26, U26 connects U27, U27 connects U37, U37 connects U38, U38 connects U39, U39 connects U49, U49 connects U50, U50 connects U51, U51 connects U61, U61 connects U62, U62 connects U63, U63 connects U73, U73 connects U74, U74 connects U75, U75 connects U85, U85 connects U86, U86 connects U87;
and V-phase winding: v9 connects V10, V10 connects V11, V11 connects V21, V21 connects V22, V22 connects V23, V23 connects V33, V33 connects V34, V34 connects V35, V35 connects V45, V45 connects V46, V46 connects V47, V47 connects V57, V57 connects V58, V58 connects V59, V59 connects V69, V69 connects V70, V70 connects V71, V71 connects V81, V81 connects V82, V82 connects V83, V83 connects V93, V93 connects V94, V94 connects V95;
w-phase winding: w5 connects W6, W6 connects W7, W7 connects W17, W17 connects W18, W18 connects W19, W19 connects W29, W29 connects W30, W30 connects W31, W31 connects W41, W41 connects W42, W42 connects W43, W43 connects W53, W53 connects W54, W54 connects W55, W55 connects W65, W65 connects W66, W66 connects W67, W67 connects W77, W77 connects W78, W78 connects W79, W79 connects W89, W89 connects W90, W90 connects W91 coil.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star points or in an angle shape according to the working condition requirement to form a first-level seventy-two same-phase slot armature winding 302.
The first-level mixed armature winding 303 with ninety-six same-phase and different-phase slots comprises seventy-two in-phase slot coils, twenty-four out-phase slot coils and ninety-six coils, each phase winding of the three-phase winding comprises thirty-two coils, and the connection sequence of the coils of each phase is as follows:
and (3) U-phase winding: u1 connects U2, U2 connects U3, U3 connects U4, U4 connects U13, U13 connects U14, U14 connects U15, U15 connects U16, U16 connects U25, U25 connects U26, U26 connects U27, U27 connects U28, U28 connects U37, U37 connects U38, U38 connects U39, U39 connects U40, U40 connects U49, U49 connects U50, U50 connects U51, U51 connects U52, U52 connects U61, U61 connects U62, U62 connects U63, U63 connects U64, U64 connects U73, U73 connects U74, U74 connects U75, U75 connects U76, U76 connects U85, U85 connects U86, U86 connects U87, U87 connects U88;
and V-phase winding: v9 connects V10, V10 connects V11, V11 connects V12, V12 connects V21, V21 connects V22, V22 connects V23, V23 connects V24, V24 connects V33, V33 connects V34, V34 connects V35, V35 connects V36, V36 connects V45, V45 connects V46, V46 connects V47, V47 connects V48, V48 connects V57, V57 connects V58, V58 connects V59, V59 connects V60, V60 connects V69, V69 connects V70, V70 connects V71, V71 connects V72, V72 connects V81, V81 connects V82, V82 connects V83, V83 connects V84, V84 connects V93, V93 connects V94, V94 connects V95, V95 connects V96;
w-phase winding: w5 connects W6, W6 connects W7, W7 connects W8, W8 connects W17, W17 connects W18, W18 connects W19, W19 connects W20, W20 connects W29, W29 connects W30, W30 connects W31, W31 connects W32, W32 connects W41, W41 connects W42, W42 connects W43, W43 connects W44, W44 connects W53, W53 connects W54, W54 connects W55, W55 connects W56, W56 connects W65, W65 connects W66, W66 connects W67, W67 connects W68, W68 connects W77, W77 connects W78, W78 connects W79, W79 connects W80, W80 connects W89, W89 connects W90, W90 connects W91, W91 connects W92.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star points or in an angle shape according to working condition requirements, and a first-level mixed armature winding 303 with ninety-six same-phase and different-phase slots is formed.
The twelve-phase slot armature winding 304 of the second level comprises twelve out-of-phase slot coils, each phase winding comprises four coils, and the connection sequence of the coils of each phase of the three-phase winding is as follows:
and (3) U-phase winding: u4 connects U28, U28 connects U52, U52 connects U76;
and V-phase winding: v12 is connected with V36, V36 is connected with V60, and V60 is connected with V84;
w-phase winding: w8 is connected with W32, W32 is connected with W56, and W56 is connected with W80.
And the terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star points or in an angle shape according to working conditions to form a second-level twelve-phase-slot armature winding 304.
The second tier forty-eight in-phase slot armature winding 305 includes forty-eight in-phase slot coils, each phase winding of the three-phase winding includes sixteen coils, and the connection sequence of each phase coil is:
and (3) U-phase winding: u1 connects U2, U2 connects U13, U13 connects U14, U14 connects U25, U25 connects U26, U26 connects U37, U37 connects U38, U38 connects U49, U49 connects U50, U50 connects U61, U61 connects U62, U62 connects U73, U73 connects U74, U74 connects U85, U85 connects U86;
and V-phase winding: v9 connects V10, V10 connects V21, V21 connects V22, V22 connects V33, V33 connects V34, V34 connects V45, V45 connects V46, V46 connects V57, V57 connects V58, V58 connects V69, V69 connects V70, V70 connects V81, V81 connects V82, V82 connects V93, V93 connects V94;
w-phase winding: w5 connects W6, W6 connects W17, W17 connects W18, W18 connects W29, W29 connects W30, W30 connects W41, W41 connects W42, W42 connects W53, W53 connects W54 connects W65, W65 connects W66, W66 connects W77, W77 connects W78, W78 connects W89, W89 connects W90.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star points or in an angle shape according to the working condition requirement to form a second-level forty-eight same-phase slot armature winding 305.
The sixty same-phase and different-phase slot hybrid armature windings 306 in the second level include forty-eight same-phase slot coils, twelve different-phase slot coils, and sixty coils in total, each phase winding of the three-phase winding includes twenty coils, and the connection sequence of each phase coil is as follows:
and (3) U-phase winding: u1 connects U2, U2 connects U4, U4 connects U13, U13 connects U14, U14 connects U25, U25 connects U26, U26 connects U28, U28 connects U37, U37 connects U38, U38 connects U49, U49 connects U50, U50 connects U52, U52 connects U61, U61 connects U62, U62 connects U73, U73 connects U74, U74 connects U76, U76 connects U85, U85 connects U86;
and V-phase winding: v9 connects V10, V10 connects V12, V12 connects V21, V21 connects V22, V22 connects V33, V33 connects V34, V34 connects V36, V36 connects V45, V45 connects V46, V46 connects V57, V57 connects V58, V58 connects V60, V60 connects V69, V69 connects V70, V70 connects V81, V81 connects V82, V82 connects V84, V84 connects V93, V93 connects V94;
w-phase winding: w5 connects W6, W6 connects W8, W8 connects W17, W17 connects W18, W18 connects W29, W29 connects W30, W30 connects W32, W32 connects W41, W41 connects W42, W42 connects W53, W53 connects W54, W54 connects W56, W56 connects W65, W65 connects W66, W66 connects W77, W77 connects W78, W78 connects W80, W80 connects W89, W89 connects W90.
And the terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star points or in an angle shape according to the working condition requirement to form a second-level sixty same-phase and different-phase slot hybrid armature winding 306.
The cross-layer seventy-two same-phase and different-phase slot hybrid armature winding 307 comprises forty-eight same-phase slot coils, twenty-four different-phase slot coils and 72 coils in total, each phase winding of the three-phase winding comprises twenty-four coils, and the connection sequence of the phase coils is as follows:
and (3) U-phase winding: u1 connects U2, U2 connects U4, U4 connects U13, U13 connects U14, U14 connects U16, U16 connects U25, U25 connects U26, U26 connects U28, U28 connects U37, U37 connects U38, U38 connects U40, U40 connects U49, U49 connects U50, U50 connects U52, U52 connects U61, U61 connects U62, U62 connects U64, U64 connects U73, U73 connects U74, U74 connects U76, U76 connects U85, U85 connects U86, U86 connects U88;
and V-phase winding: v9 connects V10, V10 connects V12, V12 connects V21, V21 connects V22, V22 connects V24, V24 connects V33, V33 connects V34, V34 connects V36, V36 connects V45, V45 connects V46, V46 connects V48, V48 connects V57, V57 connects V58, V58 connects V60, V60 connects V69, V69 connects V70, V70 connects V72, V72 connects V81, V81 connects V82, V82 connects V84, V84 connects V93, V93 connects V94, V94 connects V96;
w-phase winding: w5 connects W6, W6 connects W8, W8 connects W17, W17 connects W18, W18 connects W20, W20 connects W29, W29 connects W30, W30 connects W32, W32 connects W41, W41 connects W42, W42 connects W44, W44 connects W53, W53 connects W54, W54 connects W56, W56 connects W65, W65 connects W66, W66 connects W68, W68 connects W77, W77 connects W78, W78 connects W80, W80 connects W89, W89 connects W90, W90 connects W92.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star points or in an angle shape according to the working condition requirement, so that the cross-layer-level seventy-two same-phase and different-phase slot hybrid armature winding 307 is formed.
The cross-layer thirty-six same-phase and different-phase slot hybrid armature winding 308 comprises twenty-four same-phase slot coils, twelve different-phase slot coils and 36 coils in total, each phase winding of the three-phase winding comprises twelve coils, and the connection sequence of the coils of each phase is as follows:
and (3) U-phase winding: u1 connects U4, U4 connects U13, U13 connects U25, U25 connects U28, U28 connects U37, U37 connects U49, U49 connects U52, U52 connects U61, U61 connects U73, U73 connects U76, U76 connects U85;
and V-phase winding: v9 is connected with V12, V12 is connected with V21, V21 is connected with V33, V33 is connected with V36, V36 is connected with V45, V45 is connected with V57, V57 is connected with V60, V60 is connected with V69, V69 is connected with V81, V81 is connected with V84, and V84 is connected with V93;
w-phase winding: w5 connects W8, W8 connects W17, W17 connects W29, W29 connects W32, W32 connects W41, W41 connects W53, W53 connects W56, W56 connects W65, W65 connects W77, W77 connects W80, W80 connects W89.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star points or in an angle shape according to the working condition requirement, so that the cross-layer thirty-six same-phase and different-phase slot hybrid armature winding 308 is formed.
Please refer to fig. 2, which is a schematic diagram of an armature switch control circuit of the multi-pole slot set; according to the multi-pole slot group permanent magnet motor and the armature controller of the application, the schematic diagram of the multi-pole slot group armature switch control circuit in fig. 2 shows the circuit connection relationship among the switching devices of the armature controller, the first-level three armature windings and the second-level three armature windings of the octupole ninety-six slot permanent magnet motor, and the armature windings, the phase windings and the coils of the two cross-level in-phase and out-phase slot mixed armature windings; the phase windings in the switch control schematic diagram are connected in a star-shaped central point mode; when the selected armature winding works according to the working condition, the switching device circuit of the armature winding including the phase winding and the coil thereof is switched on, and the switching device circuit of the rest of the armature windings which do not work includes the phase winding and the coil thereof is switched off.
Please refer to fig. 3 for a schematic diagram of an eighteen-phase armature winding; the eighteen-phase armature winding is still established on the basis of the mixed armature winding configuration of the first-level ninety-six same-phase slots in fig. 1, in order to clearly show the configuration of the eighteen-phase armature winding as a whole and the coil distribution details, fig. 3 does not show other coils which do not belong to the eighteen-phase armature winding except for showing coils and configurations of the eighteen-phase armature winding, and the coil distribution of each slot in fig. 3 is the same as that in fig. 1.
Referring to fig. 4, a schematic diagram of an eighteen-phase armature winding switch control circuit is shown, where the eighteen-phase armature winding is composed of seventy-two same-phase slot windings and includes eighteen wire outlet ends and eighteen tail end seal points, the eighteen-phase winding has eighteen groups of switching devices, 5 switching devices are provided for each phase of 4 coils, ninety switching devices in an armature controller are used in common, and the switching devices of the armature controller implement on and off of the eighteen-phase armature winding according to the switch control circuit.
The coils of each phase of the eighteen-phase armature winding are named as five digits, the first two digits represent a slot number, the middle two digits represent a phase number, and the last digit represents a coil number of the phase, for example, the 1 st coil of the 01 th phase of the 01 th slot is marked as 01011, and the coil connection sequence of each phase is as follows:
phase 01: 01011 to 25012, 25012 to 49013, 49013 to 73014;
phase 02: 05021 connection 29022, 29022 connection 53023, 53023 connection 77024;
phase 03: 09031 connection 33032, 33032 connection 57033, 57033 connection 81034;
phase 04: 02041 is connected with 26042, 26042 is connected with 50043, 50043 is connected with 74044;
phase 05: 06051 connection 30052, 30052 connection 54053, 54053 connection 78054;
phase 06: 10061 connection 34062, 34062 connection 58063, 58063 connection 82064;
phase 07: 13071 connection 37072, 37072 connection 61073, 61073 connection 85074;
phase 08: 17081 connection 41082, 41082 connection 65083, 65083 connection 89084;
phase 09: 21091 connection 45092, 45092 connection 69093, 69093 connection 93094;
phase 10: 14101 connection 38102, 38102 connection 62103, 62103 connection 86104;
phase 11: 18111 link 42112, 42112 link 66113, 66113 link 90114;
phase 12: 22121 connection 46122, 46122 connection 70123, 70123 connection 94124;
phase 13: 03131 connection 27132, 27132 connection 51133, 51133 connection 75134;
phase 14: 07141 connection 31142, 31142 connection 55143, 55143 connection 79144;
phase 15: 11151 connection 35152, 35152 connection 59153, 59153 connection 83154;
phase 16: 15161 connection 39162, 39162 connection 63163, 63163 connection 87164;
phase 17: 19171 connection 43172, 43172 connection 67173, 67173 connection 91174;
phase 18: 23181 connection 47182, 47182 connection 71183, 71183 connection 95184;
and the terminals at the tail parts of the phase windings from the 1 st phase to the 18 th phase are connected in a star-shaped sealing point manner to form the eighteen-phase armature winding.
Of course, those skilled in the art can also group the armature windings of the motor into different levels or regroup the armature windings of different levels according to the basic manufacturing method without any creative effort, and the essence of the corresponding technical solution does not depart from the protection scope of the present invention.
While the invention has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the invention. In particular, the various features of the disclosed embodiments of the invention may be used in any combination, provided that no structural conflict exists, and the combinations are not exhaustively described in this specification merely for the sake of brevity and resource conservation. Therefore, it is intended that the invention not be limited to the particular embodiments disclosed, but that the invention will include all embodiments falling within the scope of the appended claims.
Claims (8)
1. A multi-pole slot-group permanent magnet electric machine, comprising: the permanent magnet motor is characterized in that armature windings distributed in the whole tooth spaces of a stator are overlapped according to the type of in-phase slot windings to form a plurality of in-phase slot armature windings using partial tooth spaces respectively, the in-phase slot armature windings and the out-phase slot armature windings are overlapped according to the type of out-phase slot windings to form a plurality of out-phase slot armature windings using partial tooth spaces respectively, the in-phase slot armature windings and the out-phase slot armature windings are overlapped to form in-phase and out-phase slot mixed armature windings using partial tooth spaces and are combined with the number of pole pairs of a rotor respectively to form a plurality of pole-slot ratios, the armature windings of a plurality of pole-slot groups meet the requirements of uniform distribution of electric angles and the pole ratios of the armature windings and the rotor, and electromagnetic motion is independently or jointly implemented under the regulation and control of an armature controller;
the multi-pole slot group motor stator is composed of armature windings with different levels, different types and unequal numbers, the first level armature winding is composed of more than one same-phase slot armature winding, out-of-phase slot armature winding and mixed armature winding of the same-phase and out-of-phase slots, and the armature windings of the second level and the next level and the like are respectively reduced in use of tooth sockets and phase winding coils with unequal numbers compared with the armature windings of the same type of the previous level; the first-level and the second-level armature windings comprise cross-level armature windings which are respectively formed by different-level in-phase slot windings and different-level out-phase slot windings, and cross-level in-phase and out-phase slot mixed armature windings which are formed by different-level in-phase slot windings and different-level out-phase slot windings; the number of tooth slots occupied by the armature windings of various pole slot groups of the motor is the number of tooth slots actually used by the armature windings.
2. The multiple pole slot group permanent magnet motor as claimed in claim 1, wherein the number of phases of the armature winding is three or more than a multiple of one phase, and independent multiple phase armature windings are respectively formed according to the categories of the same phase slots, the different phase slots and the mixed armature windings of the same phase and different phase slots.
3. A multi-pole slot group permanent magnet machine as claimed in claim 1 wherein the machine rotor pole number and total stator slot number are such that z/2pm = q is a positive integer, where z is the number of slots, p is the number of pole pairs and m is the number of phases, and the slot pole ratio of the armature winding to the number of rotor pole pairs for each level comprises integer slots and fractional slots.
4. A multi-pole slot set permanent magnet machine according to claim 1 wherein the number of pole pairs of the machine rotor is a pair of poles or multiples thereof, including radially compound, axially compound and various types and numbers of rotor bodies with inner and outer rotors co-operating around the stator armature winding.
5. A multiple pole slot group permanent magnet machine according to claim 2, wherein each individual multiple phase armature winding is connected in star and/or angle.
6. A control method for a multi-pole slot group permanent magnet motor according to any of claims 1-5, characterized in that power semiconductor switching devices or other types of switching devices of the armature controller are connected with the preset circuit of the coil head end and the tail end of the armature winding; the switching device is connected with the armature winding phase winding preset star-shaped and/or horn-shaped circuit; and the switching device is in switching circuit preset connection with each armature winding.
7. The method as claimed in claim 6, wherein the load side inductor feeds back the load condition to the armature controller, the armature controller selects the armature winding mode to be adopted to conduct the on and off of the corresponding coil and the phase winding thereof, and to conduct the circuit switching between the selected armature windings, and the armature controller instructs the motor inverter driver to conduct the adaptive motor control parameter variation and driving.
8. The method as claimed in claim 6, wherein the armature controller and the armature winding are controlled by connection, conduction, disconnection, or the like of electrical, circuit, electromagnetic, electrical, or the like devices, alone or in combination.
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| CN110417215B (en) * | 2019-08-01 | 2020-05-22 | 上海大学 | Axial flux permanent magnet synchronous motor matched with multi-pole slots |
| CN211429018U (en) * | 2019-12-31 | 2020-09-04 | 苏州英磁新能源科技有限公司 | Stator structure of low-noise motor |
| CN111478540A (en) * | 2020-05-18 | 2020-07-31 | 沈阳工业大学 | Permanent magnet motor concentrated winding modulation method and adjustable winding |
| DE102022108615A1 (en) * | 2021-04-09 | 2022-10-13 | Borgwarner Inc. | DIAMOND COIL STATOR WITH PARALLEL PATHS AND BALANCED WINDING ARRANGEMENT |
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