CN115664078A - Multi-armature winding permanent magnet motor and control method thereof - Google Patents
Multi-armature winding permanent magnet motor and control method thereof Download PDFInfo
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- CN115664078A CN115664078A CN202211661084.4A CN202211661084A CN115664078A CN 115664078 A CN115664078 A CN 115664078A CN 202211661084 A CN202211661084 A CN 202211661084A CN 115664078 A CN115664078 A CN 115664078A
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Abstract
The invention provides a multi-armature winding permanent magnet motor and a control method thereof, and belongs to the technical field of motors. The problem that the permanent magnet motor consumes more electric energy when running at the over-rated rotating speed is solved. The technical scheme is as follows: the motor comprises a plurality of basic configurations of armature windings and control methods thereof, so that a single permanent magnet motor runs under the magnetic field condition of a plurality of slot pole combinations, the diversity of the electromagnetic field motion of the motor is realized, the fault-tolerant safety capability of the motor is also improved, and the motor can obtain a plurality of fundamental frequencies. The invention has the beneficial effects that: the invention widens the high-speed and high-efficiency operation range of the motor and meets the working condition application requirements of high-frequency change of the torque and the rotating speed of the motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a multi-armature winding permanent magnet motor and a control method thereof.
Background
The conventional permanent magnet synchronous motor only has a single slot pole ratio combination and a stator armature winding based on the slot pole ratio combination, so that only one electromagnetic field condition and one back electromotive force and one rated rotating speed of fundamental frequency are required. When the working condition requires the permanent magnet motor to implement the operation with the over-rated rotating speed, the solution of the prior art is to implement the flux weakening control on the motor by the driver, so that the motor is realized by increasing the rotating speed and reducing the torque and constant power operation. The constant power operation method of flux weakening control cannot meet the requirement of super-base frequency operation under the condition of working condition constant torque, and extra flux weakening current loss can be increased.
Disclosure of Invention
The invention aims to provide a multi-armature winding permanent magnet motor and a control method thereof, which can meet the requirements of special complex working conditions on high efficiency, high speed performance and fault tolerance of the permanent magnet motor and provide a technical solution for the working condition application requirements of high-frequency torque and rotating speed change. The invention has special application value particularly for the industries such as electric propulsion systems of aircrafts and seaplanes, power systems of new energy electric vehicles, power generation and energy storage systems of wind power and water power, turbine machinery industry, intelligent continuous operation equipment and the like.
In order to solve the technical problems and achieve the purpose of the invention, the invention adopts the following technical scheme:
according to the multi-armature winding permanent magnet motor and the control method thereof, the multi-armature winding permanent magnet motor is characterized in that a rotor with a determined number of poles of the permanent magnet motor and armature windings with different numbers of tooth grooves on a stator body perform electromagnetic motion, the armature windings are provided with different combinations of the slot poles, and an armature controller forms the configuration of the multi-armature winding and the multi-phase armature winding by regulating and controlling a switching device;
the permanent magnet motor stator body is provided with a plurality of armature windings consisting of different stator tooth slot numbers and different coil numbers, the armature windings are divided into a plurality of different levels and different slot pole ratio combinations, and the armature windings comprise single-layer armature windings, double-layer armature windings and single-double-layer mixed armature windings;
the first-level armature winding of the motor comprises a single-layer armature winding and a double-layer armature winding which are formed by stator part tooth grooves and are combined by different slot poles, and the first-level single-layer and double-layer mixed armature winding which is formed by the first-level single-layer armature winding and the double-layer armature winding and occupies all the stator tooth grooves is included;
the number of tooth grooves of the armature windings of the second level, the third level, the fourth level and the next level of the motor, which are combined with different slot pole ratios, is respectively the number of the tooth grooves occupied by reducing the equivalent number of phase winding coils at the equivalent electrical angle positions in the single-layer armature winding and the double-layer armature winding of the upper level; the armature controller is respectively a single-layer armature winding and a double-layer armature winding which are formed by reducing the use of one or more phase winding coils with equal quantity at the equal electrical angle position in the single-layer armature winding and the double-layer armature winding of the upper level and the lower level of the armature winding with different slot pole ratios; the single-layer armature winding and the double-layer armature winding of the same level jointly form a single-layer and double-layer mixed armature winding of the level, and the single-layer armature winding and the double-layer armature winding of different levels jointly form a cross-level single-layer and double-layer mixed armature winding; the arrangement of each armature winding needs to satisfy the requirement of uniform distribution of the electrical angle of each phase winding coil and the requirement of the slot pole ratio relationship between the number of poles of the motor rotor and the number of slots of the armature winding.
According to the multi-armature winding permanent magnet motor and the control method thereof, the armature controller is characterized in that switching device preset connecting circuits are respectively arranged between phase winding coils of each armature winding and between the phase windings, and switching circuits are preset between the armature windings; the armature controller selects armature windings needing to operate according to the working condition requirement of the load side of the permanent magnet motor, conducts circuits between phase winding coils of the selected armature windings and between the phase windings of the armature windings, switches off the circuits of unselected armature winding coils and the phase windings, and switches the circuits between the selected armature windings and the unselected armature windings; the controller sends the selected armature winding information to the motor driver, and the driver correspondingly converts the vector control parameters of the armature winding and drives the motor under the instruction of the controller.
According to the multi-armature winding permanent magnet motor and the control method thereof, the slot pole ratio of the number of pole pairs of a motor rotor to the number of all tooth slots of a stator is a fractional slot, and armature windings of a second level and the following sub-levels of the second level comprise fractional slot types and integer slot types; when multiple armature windings are actually set and selected, the armature windings can be set and integral slots or fractional slots can be selected according to working condition requirements and the pole pair number matching of the rotor, and the optimal stator-rotor slot pole ratio combination enables the motor to reduce the tooth harmonic amplitude during electromagnetic motion and reduce the cogging torque ripple.
According to the multi-armature-winding permanent magnet motor and the control method thereof, the multi-armature-winding permanent magnet motor is characterized in that star connection modes and/or angle connection modes are selected among the phase windings of the armature windings combined by various slot pole ratios, and star and angle preset circuit connection can be performed on the same set of armature windings according to the working condition of a load side.
According to the multi-armature-winding permanent magnet motor and the control method thereof, the armature windings combined in different slot pole ratios of each layer level comprise more than one or a plurality of single-layer armature windings, double-layer armature windings and single-double-layer mixed armature windings.
According to the multi-armature winding permanent magnet motor and the control method thereof, the armature windings are independently operated and operated together under the control of the armature controller and the motor driver.
According to the multi-armature winding permanent magnet motor and the control method thereof, the armature windings of different levels comprise a plurality of three-phase and multi-phase armature windings, and the multi-phase armature windings can be provided with a plurality of three-phase windings and multi-phase windings with different numbers of tooth slots and coils according to different level preparation methods.
According to the multi-armature winding permanent magnet motor and the control method thereof, the number of poles of the motor rotor is a pair of poles and integral multiple thereof, the motor also comprises a rotor body which is compounded in a radial direction and an axial direction, and also comprises various types of rotor bodies of which the inner rotor and the outer rotor simultaneously and commonly perform electromagnetic reaction with the armature winding of the same stator body.
According to the multi-armature winding permanent magnet motor and the control method thereof, the armature controller and the armature winding adopt but not limited to single or mixed use of connection modes such as electrical connection, circuit connection, electromagnetic connection, electrical connection and various types of electric control modes such as connection, conduction, disconnection, delay and the like.
The multi-armature winding permanent magnet motor and the control method thereof are characterized by comprising a motor and a generator.
Compared with the prior conventional permanent magnet motor technology, the invention has the advantages that under the condition that the shapes of the first-level armature windings and the motor body of the motor are determined, the electromagnetic reactions of various armature windings and the same rotor based on different tooth slot numbers and coil numbers of different levels generate different counter electromotive forces, and under the condition that the drivers input the same or similar working voltages, the armature windings with different counter electromotive forces have different fundamental frequencies, so that the single permanent magnet motor has the performance of running at different fundamental frequency rotating speeds of various armature windings, and the multiphase windings have more fault-tolerant functions. The multi-armature winding permanent magnet motor and the control method thereof have practical application values for a new energy electric vehicle power system, an electric propulsion power system of an aircraft and a navigation device, a wind power and water conservancy power generation energy storage system, a turbine mechanical industrial system, intelligent automatic production line equipment and the like.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the following embodiments and the attached drawings which need to be used are briefly described, and it is obvious that some, but not all embodiments described below are provided. Based on the embodiments of the present invention, those skilled in the art can also obtain all other embodiments and drawings according to the embodiments and drawings without creative efforts, and all these embodiments and drawings belong to the protection scope of the present invention.
FIG. 1 is a schematic diagram of a four level armature winding of the present invention;
FIG. 2 is a schematic diagram of four-level armature circuit switch control according to the present invention;
FIG. 3 is a schematic diagram of a twelve-phase armature winding of the present invention;
FIG. 4 is a schematic diagram of the switch control of a twelve-phase armature circuit according to the present invention.
Wherein the reference numerals are:
101: the first-level thirty-six-slot single-layer and double-layer hybrid armature winding; 102: a first-level twenty-four slot single-layer armature winding; 103: a first-level twelve-slot double-layer armature winding; 104: a second level thirty-slot single-double layer hybrid armature winding; 105: a second level of eighteen-slot single-layer armature windings; 106: a second level of twelve-slot double-layer armature windings; 107: a twenty-one slot single-double layer hybrid armature winding of the third layer level; 108: a third-level twelve-slot single-layer armature winding; 109: a third-level nine-slot double-layer armature winding; 110: a fourth-level twelve-slot single-double layer hybrid armature winding; 111: a fourth level six-slot single-layer armature winding; 112: a fourth level six-slot double-layer armature winding; 113: a twelve-phase single-layer armature winding; 114: a twelve-phase double-layer armature winding; 115: an armature controller.
Detailed Description
This section is for the purpose of summarizing embodiments of the invention and to 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.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with 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 will be described in detail with reference to the drawings, wherein for convenience of illustration, the cross-sectional view of the device structure is not enlarged partially according to the general scale, and the drawings are only examples, 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.
According to an embodiment of the present invention, referring to fig. 1, an eight-pole thirty-six slot permanent magnet motor is taken as an example, according to the method for preparing a multi-armature winding of the present invention, the armature winding of the motor can be configured as, but not limited to, four levels of twelve independent three-phase armature windings. The configurations of the phase windings of the twelve armature windings and the coils thereof are obtained by the coil numbers and the identification of the U, V, W three-phase windings in the winding insertion grooves in fig. 1 and the description of the connection relationship between the coils of the respective armature windings in the description of the embodiment described below.
According to an embodiment of the present invention, referring to fig. 2, distribution and on-off relationship between switching devices of an armature controller 115 and coils of phase windings of four-level twelve types of three-phase armature windings of an eight-pole thirty-six slot motor, and distribution and connection-off relationship between the phase windings of each three-phase armature winding are shown according to reference numerals, wherein the phase windings of each armature winding are connected in a star-shaped center point connection manner, when an armature winding selected by the armature controller 115 according to an operating condition operates, a circuit of the switching devices of which the armature windings comprise phase winding coils is turned on, and a circuit of the switching devices of which the rest of the non-operating armature windings comprise phase winding coils is turned off.
It should be noted that, the number of slots occupied by each of the multiple armature windings referred to in the reference numerals of the present invention is calculated by counting two stator slots for each coil used by each single-layer armature winding, and the number of stator slots actually occupied by each double-layer armature winding by the coil used by each double-layer armature winding.
In the present embodiment, only the first-level thirty-six-slot single-double layer hybrid armature winding 101, the first-level twenty-four-slot single-layer armature winding 102, the first-level twelve-slot double layer armature winding 103, the second-level thirty-slot single-double layer hybrid armature winding 104, the second-level eighteen-slot single-layer armature winding 105, the second-level twelve-slot double layer armature winding 106, the third-level twenty-one-slot single-double layer hybrid armature winding 107, the third-level twelve-slot single-layer armature winding 108, the third-level nine-slot double layer armature winding 109, the fourth-level twelve-slot single-double layer hybrid armature winding 110, the fourth-level six-slot single-layer armature winding 111, and the fourth-level six-slot double layer armature winding 112 are specifically described as examples of the present invention.
The first-level thirty-six-slot single-double-layer hybrid armature winding 101 is composed of 24 coils, wherein 12 single-layer winding coils are provided, 12 double-layer winding coils are provided, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: coil 1 is connected with coil 4, coil 4 is connected with coil 7, coil 7 is connected with coil 10, coil 10 is connected with coil 13, coil 13 is connected with coil 16, coil 16 is connected with coil 19, and coil 19 is connected with coil 22;
and V-phase winding: coil 3 is connected with coil 6, coil 6 is connected with coil 9, coil 9 is connected with coil 12, coil 12 is connected with coil 15, coil 15 is connected with coil 18, coil 18 is connected with coil 21, and coil 21 is connected with coil 24;
w-phase winding: coil 2 is connected with coil 5, coil 5 is connected with coil 8, coil 8 is connected with coil 11, coil 11 is connected with coil 14, coil 14 is connected with coil 17, coil 17 is connected with coil 20, and coil 20 is connected with coil 23.
Terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to working condition requirements, so that the first-level 36-slot single-layer and double-layer hybrid armature winding 101 is formed.
The first-level twenty-four slot single-layer armature winding 102 is composed of 12 single-layer winding coils, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: coil 4 is connected with coil 10, coil 10 is connected with coil 16, and coil 16 is connected with coil 22;
and V-phase winding: coil 6 is connected with coil 12, coil 12 is connected with coil 18, and coil 18 is connected with coil 24;
w-phase winding: coil 2 is connected to coil 8, coil 8 is connected to coil 14, and coil 14 is connected to coil 20.
Terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to working conditions, so that the first-level twenty-four-slot single-layer armature winding 102 is formed.
The first-level twelve-slot double-layer armature winding 103 is composed of 12 double-layer winding coils, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: coil 1 is connected with coil 7, coil 7 is connected with coil 13, and coil 13 is connected with coil 19;
and V-phase winding: coil 3 is connected with coil 9, coil 9 is connected with coil 15, and coil 15 is connected with coil 21;
w, winding: coil 5 is connected to coil 11, coil 11 is connected to coil 17, and coil 17 is connected to coil 23.
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 angular head and tail ends according to working conditions to form a first-level twelve-slot double-layer armature winding 103.
The thirty-slot single-double layer hybrid armature winding 104 of the second level is composed of 18 coils, wherein 9 single-layer windings and 9 double-layer windings are arranged, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: coil 1 is connected with coil 4, coil 4 is connected with coil 10, coil 10 is connected with coil 13, coil 13 is connected with coil 19, and coil 19 is connected with coil 22;
and V-phase winding: coil 3 is connected with coil 6, coil 6 is connected with coil 9, coil 9 is connected with coil 12, coil 12 is connected with coil 18, and coil 18 is connected with coil 21;
w-phase winding: coil 2 is connected with coil 5, coil 5 is connected with coil 11, coil 11 is connected with coil 14, coil 14 is connected with coil 17, and coil 17 is connected with coil 20.
Terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to working conditions, so that the second-level 30-slot single-layer and double-layer hybrid armature winding 104 is formed.
The second-level eighteen-slot single-layer armature winding 105 is composed of 9 single-layer winding coils, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: the coil 4 is connected with the coil 10, and the coil 10 is connected with the coil 22;
and V-phase winding: the coil 6 is connected with the coil 12, and the coil 12 is connected with the coil 18;
w-phase winding: coil 2 is connected to coil 14, and coil 14 is connected to coil 20.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to working conditions, so that the second-level eighteen-slot single-layer armature winding 105 is formed.
The second-level twelve-slot double-layer armature winding 106 is composed of 9 double-layer winding coils, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: coil 13 is connected with coil 1, and coil 19 is connected with coil 13;
and V-phase winding: the coil 3 is connected with the coil 9, and the coil 9 is connected with the coil 21;
w-phase winding: coil 5 is connected to coil 11, and coil 11 is connected to coil 17.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to the working condition requirement, so that the second-level twelve-slot double-layer armature winding 106 is formed.
The third-level twenty-one slot single-double layer hybrid armature winding 107 is composed of 12 coils, wherein the number of the single-layer winding coils is 6, the number of the double-layer winding coils is 6, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: the coil 1 is connected with the coil 4, the coil 4 is connected with the coil 7, and the coil 7 is connected with the coil 22;
and V-phase winding: the coil 6 is connected with the coil 9, the coil 9 is connected with the coil 12, and the coil 12 is connected with the coil 15;
w-phase winding: coil 14 is connected to coil 17, coil 17 is connected to coil 20, and coil 20 is connected to coil 23.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in angular head-tail ends according to working conditions, so that the twenty-one-slot single-layer and double-layer hybrid armature winding 107 at the third layer is formed.
The third-level twelve-slot single-layer armature winding 108 is composed of 6 single-layer winding coils, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: the coil 4 is connected with the coil 22;
and V-phase winding: the coil 6 is connected with the coil 12;
w-phase winding: the coil 14 is connected to the coil 20.
The connection 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 angular head and tail ends according to working conditions to form a third-layer twelve-slot single-layer armature winding 108.
The third-level nine-slot double-layer armature winding 109 is composed of 6 double-layer winding coils, and the connection sequence of the three-phase winding coils is as follows:
a U-phase winding: the coil 1 is connected with the coil 7;
and V-phase winding: the coil 9 is connected with the coil 15;
w-phase winding: the coil 17 is connected to the coil 23.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to working conditions, so that the third-layer nine-slot double-layer armature winding 109 is formed.
The fourth-level twelve-slot single-double-layer hybrid armature winding 110 is composed of 6 coils, wherein 3 single-layer winding coils and 3 double-layer winding coils are arranged, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: the coil 4 is connected with the coil 7;
and V-phase winding: the coil 12 is connected with the coil 15;
w-phase winding: the coil 20 is connected to the coil 23.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to the working condition requirement, so that the fourth-level twelve-slot single-layer and double-layer hybrid armature winding 110 is formed.
The fourth-level six-slot single-layer armature winding 111 is composed of 3 single-layer winding coils, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: the coil 4 is separately arranged;
and V-phase winding: the coil 12 is provided separately;
w-phase winding: the coil 20 is provided separately.
Terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to working conditions, so that the fourth-level six-slot single-layer armature winding 111 is formed.
The fourth-level six-slot double-layer armature winding 112 is composed of 3 double-layer winding coils, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: the coil 7 is separately provided;
and V-phase winding: the coil 15 is provided separately;
w-phase winding: the coil 23 is provided separately.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to the working condition requirement, so that the fourth-level six-slot double-layer armature winding 112 is formed.
According to the embodiment of the invention, as shown in fig. 1, according to the preparation method of the multi-armature winding, the single-layer winding and the double-layer winding of different levels can jointly form the single-layer and double-layer mixed armature winding with different tooth slot numbers and slot pole ratios. In the embodiment of the invention, at least twelve cross-level single-layer and double-layer hybrid armature windings can be set in the octapole thirty-six slot motor, which is not illustrated here.
In this embodiment, the nine coils of the second-level eighteen-slot single-layer armature winding 105 and the six coils of the third-level nine-slot double-layer armature winding 109 jointly form a single-layer and double-layer hybrid armature winding spanning twenty-seven tooth slots of a level, and the connection sequence of the three-phase winding coils is as follows:
and (3) U-phase winding: coil 1 is connected with coil 4, coil 4 is connected with coil 7, coil 7 is connected with coil 10, and coil 10 is connected with coil 22;
and V-phase winding: the coil 6 is connected with the coil 9, and the coil 9 is connected with the coil 12; the coil 12 is connected with the coil 15; the coil 15 is connected with the coil 18;
w-phase winding: coil 2 is connected to coil 14, coil 14 is connected to coil 17, coil 17 is connected to coil 20, and coil 20 is connected to coil 23.
The terminals at the tail parts of the U-phase winding, the V-phase winding and the W-phase winding are connected in star-shaped sealing points or in the shape of an angle according to working condition requirements, and the structure is a cross-level twenty-seven-slot single-layer and double-layer hybrid armature winding.
According to an embodiment of the present invention, as shown in fig. 3 and 4, the present embodiment includes the twelve-phase single-layer armature winding 113 and the twelve-phase double-layer armature winding 114.
For clarity of the multi-phase windings of the embodiments, the coils of each phase are labeled with six digits, the first two digits representing the serial number of the phase winding of the multi-phase armature winding, the middle two digits representing the serial number of the coil of the phase winding, and the last two digits representing the serial number of the winding insertion slot. The first coil of the first phase of, for example, a twelve-phase armature winding, which coil is designated 010101, is located in the first slot.
The twelve-phase single-layer armature winding 113 comprises twelve single-layer winding coils, the coils are arranged in single-layer winding embedding slots, and the connection sequence and the positions of the coils of the twelve-phase single-layer winding are as follows:
a first phase: 010406; a second phase: 020609;
a third phase: 030812; and a fourth phase: -041015-;
and a fifth phase: 051218 —; and a sixth phase: -061421;
and a seventh phase: -071624-; and an eighth phase: 081827;
a ninth phase: 092030; a tenth phase: 102233;
an eleventh phase: 112436; a twelfth phase: -120203-.
The terminals of the tail parts of the first phase to the twelfth phase are connected by star points to form a twelve-phase single-layer armature winding 113.
The twelve-phase double-layer armature winding 114 comprises twelve double-layer winding coils, the coils are arranged in the double-layer winding embedding slots, and the connection sequence and the positions of the coils of the twelve-phase double-layer winding are as follows:
a first phase: -010102-; a second phase: 020305;
a third phase: 030508; and a fourth phase: 040711;
and a fifth phase: 050914; and a sixth phase: 061117;
and a seventh phase: -071320-; an eighth phase: 081523;
a ninth phase: 091726; a tenth phase: 101929;
an eleventh phase: 112132 —; a twelfth phase: -122335-.
The terminals of the tail parts of the first phase winding to the twelfth phase winding are connected by star points to form a twelve-phase double-layer armature winding 114.
The motor with the multiple armature windings and the multi-phase armature windings has a strong fault-tolerant function, and particularly has special application value and an indispensable safety fault-tolerant function in the industries of electric propulsion systems of aircrafts and seafarers, power systems of new energy electric vehicles, power generation and energy storage systems of wind power and water power and the like, the turbomachinery industry, the metallurgical smelting industry, the chemical industry, intelligent automatic continuous operation equipment and the like.
In the description of the embodiments of the present invention, it should be noted that the terms "center", "radial", "axial", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the embodiments and the drawings, and are only used for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation and position and operation, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "connected" and "connected" are to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection, unless explicitly stated or limited otherwise; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. Specific meanings of the above terms in the embodiments of the present invention can be understood in specific cases by those of ordinary skill in the art.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same. Although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (9)
1. The multi-armature winding permanent magnet motor and the control method thereof are characterized in that a rotor with a determined number of poles of the permanent magnet motor and armature windings with different numbers of tooth grooves on a stator body implement electromagnetic motion, and an armature controller forms a multi-armature winding and multi-phase armature winding configuration by regulating and controlling a switching device;
the permanent magnet motor stator body is provided with a plurality of armature windings consisting of different stator tooth slot numbers and different coil numbers, the armature windings are divided into a plurality of different levels and different slot pole ratio combinations, and the armature windings comprise single-layer armature windings, double-layer armature windings and single-double-layer mixed armature windings;
the first-level armature winding of the motor comprises a single-layer armature winding and a double-layer armature winding which are formed by stator part tooth grooves and are combined by different slot poles, and the first-level single-layer armature winding and the double-layer armature winding form a single-layer and double-layer mixed armature winding which occupies all the stator tooth grooves;
the number of tooth grooves of the second-level armature winding of the motor and the armature windings combined by the same number of the next-level different slot pole ratios is respectively the number of tooth grooves occupied by the single-layer armature winding and the double-layer armature winding of the previous level after the equal number of phase winding coils are respectively reduced on the equal electrical angle positions; the single-layer armature winding and the double-layer armature winding are respectively formed by reducing the number of phase winding coils with equal number at the position with equal electrical angle; the single-layer armature winding and the double-layer armature winding at the same level jointly form a single-layer and double-layer hybrid armature winding at the level, and the single-layer armature winding and the double-layer armature winding at different levels jointly form a cross-level single-layer and double-layer hybrid armature winding;
the armature controller is respectively provided with a switching device and a preset connecting circuit between the phase winding coils of each armature winding and between each phase winding, and a switching circuit is preset between each armature winding; the armature controller conducts the circuits between the phase winding coils of the selected armature winding and between the phase windings thereof, conducts the circuits of the phase winding coils and the phase windings of the other armature windings, and conducts the circuit switching between the selected armature winding and the unselected armature winding.
2. A multi-armature winding permanent magnet motor and a control method thereof according to claim 1, wherein the slot pole ratio of the number of pole pairs of the motor rotor to the number of all tooth slots of the stator is fractional slot, and the armature winding of the second level and the following levels thereof comprises fractional slot and integer slot.
3. A multi-armature-winding permanent magnet motor and a control method thereof according to claim 1, wherein the phase windings of the armature windings combined by the slot pole ratios adopt a star connection mode and/or an angle connection mode.
4. A multi-armature winding permanent magnet motor and a control method thereof according to claim 1, wherein the armature windings combined with different slot pole ratios of each level are not limited to one or more of a single layer armature winding, a double layer armature winding, and a single double layer hybrid armature winding.
5. A multi-armature-winding permanent magnet motor and a control method thereof according to claim 1, wherein the armature windings of the same level and different levels are operated separately and together under the control of an armature controller.
6. A multi-armature winding permanent magnet motor and a control method thereof according to claim 1, wherein the armature windings of different levels include a plurality of three-phase and multi-phase armature windings.
7. The multi-armature winding permanent magnet motor and the control method thereof according to claim 1, wherein the number of poles of the motor rotor is one pair of poles and integral multiples thereof, and the motor rotor comprises a radial composite and axial composite rotor body and also comprises a plurality of types of rotor bodies of which the inner rotor and the outer rotor commonly perform electromagnetic reaction with one stator body.
8. A multi-armature winding permanent magnet motor and a control method thereof according to claim 1, wherein the armature controller and the armature winding are connected by, but not limited to, electrical connection, circuit connection, electromagnetic connection, electrical connection, and various types of electrical control such as connection, conduction, disconnection, delay, etc. singly or in combination.
9. A multi-armature winding permanent magnet machine and a control method thereof according to claim 1, comprising an electric motor and a generator.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064648A (en) * | 2010-11-22 | 2011-05-18 | 华北电力大学 | Series capacitors-running single phase permanent magnet synchronous generator |
| WO2016061821A1 (en) * | 2014-10-24 | 2016-04-28 | 峰岹科技（深圳）有限公司 | High-power density winding structure, method and motor having axial magnetic field |
| CN113708522A (en) * | 2021-10-28 | 2021-11-26 | 南京理工大学 | High-reliability permanent magnet fault-tolerant steering motor |
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2022
- 2022-12-23 CN CN202211661084.4A patent/CN115664078B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064648A (en) * | 2010-11-22 | 2011-05-18 | 华北电力大学 | Series capacitors-running single phase permanent magnet synchronous generator |
| WO2016061821A1 (en) * | 2014-10-24 | 2016-04-28 | 峰岹科技（深圳）有限公司 | High-power density winding structure, method and motor having axial magnetic field |
| CN113708522A (en) * | 2021-10-28 | 2021-11-26 | 南京理工大学 | High-reliability permanent magnet fault-tolerant steering motor |
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| CN115664078B (en) | 2023-03-17 |
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