Duplex three-phase permanent magnet motor

Abstract

The invention discloses a duplex three-phase permanent magnet motor, which comprises a stator, a stator inner ferrule, a rotor and a shell, a configured three-phase bridge rectifier outputs a plurality of groups of pulse sine half-wave direct current to be respectively supplied to stator coils, and a characteristic form of three-phase alternating current is comprehensively and orderly formed in the plurality of groups of stator coils. A dynamic rotating magnetic field is formed at an air gap by a composite magnetic field formed by the permanent magnet in the stator ferrule, so that the rotor is stressed and rotates to output mechanical power; two silicon steel laminated sheet rotating cylinders are coaxially arranged on the rotor, a plurality of permanent magnets are installed on the rotating cylinders, the polarities of the permanent magnets installed on the surfaces of the two rotating cylinders are opposite, the polarities of the permanent magnets on the rotating cylinders are the same, the magnetic polarities of the two rotating cylinders are the same as the magnetic polarities of the corresponding stators, and the same polarities repel each other to rotate. The motor is green and environment-friendly, is close to zero emission and pollution, is energy-saving and safe, is widely applied to power sources of various large, medium and small-sized equipment, and has very high social and economic values.

Description

Technical Field

[0001] The present invention relates to a permanent magnet motor that converts magnetic energy into mechanical energy output, and more particularly to a dual three-phase permanent magnet motor, belonging to the technical field of permanent magnet motors. Background Art

[0002] At present, permanent magnet motors account for a large market share. How to further improve the efficiency of converting magnetic energy into mechanical energy is a topic for those who have been engaged in the motor industry for a long time. Although new models, new technologies, and new materials of motors are emerging continuously, there are still clues to explore. As we all know, when permanent magnets are connected in series, the composite magnetic strength is stronger than the magnetic field of a single permanent magnet. When a permanent magnet is connected in series with an electromagnetic coil, the composite magnetic field can still increase the composite magnetic strength. Special test experiments show that the composite magnetic strength has an increase value of about 30%. Analyzing the coordinate diagram of the hysteresis loop of hard magnetic materials again, the value of the saturation magnetic induction intensity Bm is greater than the remanent magnetic induction intensity Br because it is affected by the change of the magnetization field intensity HO-Hm. The energy of the magnetic field intensity change is supplied by electric energy, but the range of the numerical difference between Bm and Br of different magnetic material materials is also different. Note that the starting point of the above magnetic field intensity value is not 0 but Br, that is, the electromagnetic field directly affects the range of Br-Bm of the permanent magnet. In this way, a suitable low-cost magnetic material can be selected and a suitable small electric energy electromagnetic field can be added to keep the composite magnetic strength at the air gap position of the motor greater than the Br value, which can affect the appropriate reduction of the size of the stator silicon steel core and the appropriate reduction of the coil, and utilize the effect of the increased composite magnetic field. Apply the controllable physical phenomenon generated by this Br-Bm value to the permanent magnet motor, so as to obtain a higher magnetic field intensity with a smaller amount of electric energy, which can further save electric energy, save copper materials, save silicon steel materials, reduce the cost of permanent magnets, and improve the efficiency of converting electromagnetic energy into mechanical energy. Under the principle of following the basic characteristics of electromagnetism and permanent magnets, conduct in-depth and detailed exploration on the entire system structure of the permanent magnet motor, and research and design an innovative dual three-phase permanent magnet motor structure device system, which can further improve the motor efficiency, reduce the cost, and achieve a good product for the replacement of various equipment with servo motors as the main body. Summary of the Invention

[0003] The present invention provides a dual three-phase permanent magnet motor structure system that is green, safe, novel in structure, and reliable in operation in view of the above-mentioned problems. The theme of the solution is to make each AC coil in each phase of the three-phase coils of the motor become a fixed positive DC coil or a fixed negative DC coil. The N-pole and S-pole permanent magnets can be safely and correspondingly serially installed on the end faces of the coils that generate different fixed electromagnetic fields. The power supply must also be the corresponding DC power supply. The three-phase positive and negative direct currents and the zero-line terminal output by the three-phase full-wave bridge rectifier form 7 output terminals, which are respectively connected to the 6 groups of DC coils of the motor and operate under the control of the intelligent coding controller system; by installing permanent magnets on the surface of the electromagnetic core of the silicon steel laminations in the stator coils (referred to as coils for short), an in-series structure of an electromagnet and a permanent magnet is formed. Each single-phase AC coil of the traditional motor is designed and made into two separate DC coils, and these two DC coils are respectively designed as two independent dual-stator coil windings A and dual-stator coil winding Aa and installed in the same stator housing. A single DC coil is limited to directly passing through the positive pulse direct current in the full-wave rectified power supply, and the other single DC coil is limited to directly passing through the other half-wave negative pulse direct current in the full-wave rectified power supply. In this way, when one of the two separate DC coils is energized, the other is in a de-energized state and they operate alternately. The surface polarity of the permanent magnet serially installed on the end face of the DC coil silicon steel magnetic core is the same as the electromagnetic field polarity of the DC coil. The pulsed electromagnetic field generated by energization is superimposed on the constant magnetic field of the permanent magnet to form a new dynamic pulsed composite magnetic field. The surface magnetic polarities of these two separate and independent DC coils are always opposite. The live wires of phases A, B, and C of the three-phase AC power supply are respectively connected to three identical single-phase full-wave bridge rectifiers, and they altogether output 6 DC terminals and 1 zero-line terminal, a total of 7 output terminals, which are respectively connected to the corresponding positive 3+1 (zero line) and negative 3+1 (zero line) connection terminals in the stator coils of the motor; the corresponding rotor structure is to install two dual permanent magnet drums B and permanent magnet drum Bb on the same rotating shaft. The drums are composed of silicon steel laminations. The polarities of the permanent magnets installed on the surfaces of the two drums are opposite, but the polarities of the permanent magnets on each drum are the same. The magnetic polarities on the two drums are the same as the corresponding stator magnetic polarities. Drum B corresponds to the stator coil winding A, and drum Bb corresponds to the stator coil winding Aa, and they rotate due to the repulsion between like poles. The drum can be a solid structure or a hollow structure, depending on the design inertia required by the motor. The surface structure of the permanent magnets on the two rotors is a slope to ensure that the rotors are synchronized and rotate in the same direction and cannot reverse. If reverse rotation is required, it must be operated through the additional speed regulator of the motor to achieve rotation due to the repulsion between like poles. A protective sleeve is installed on the rotor surface to prevent safety hazards during high-speed rotation; the intelligent coding controller additionally configured for the motor has functions such as rectification, inversion, frequency modulation, speed regulation, signal reception and transmission, etc. The composite magnetic field generated at the air gap position is a fluctuating pulsed magnetic field.Under the three-phase phase difference angle condition, the composite magnetic field has the characteristics of a dynamic rotating magnetic field of the coil electromagnetic field; the innovative improvement is as follows: A dual three-phase permanent magnet motor of the present invention includes four components: a stator, a stator inner ring, a rotor, and a housing. Although the externally connected additional intelligent coding controller, speed regulator, and the three-phase full-wave bridge rectifier therein are important components of the motor system, due to different technical fields, they will not be introduced in detail herein. Two identical silicon steel laminated core magnetic cores are installed inside the stator of a dual three-phase permanent magnet motor. There are several wire grooves on the magnetic cores, and the same copper wire winding coils are embedded in the wire grooves. The surface magnetic polarities of the permanent magnets installed on the end faces of the two magnetic cores are different. One of the two coils is energized with a positive pulse direct current, and the other is energized with a negative pulse direct current. In this way, the electromagnetic field polarities generated in the two coils are also opposite. The polarities of the permanent magnets installed in the two coils must be the same as the electromagnetic field polarities of the DC coils to maintain a series relationship, and the external dimension of each permanent magnet is slightly smaller than the width dimension of the electromagnetic pole to prevent adjacent permanent magnets from attracting and flipping. In this way, the electromagnetic field polarities of each coil and the permanent magnetic field polarities generate a new composite magnetic field due to the same polarity, and this composite magnetic field is enhanced due to the superposition of the magnetic field series. This composite magnetic field is not only strengthened compared to the original single magnetic field, but also the electromagnetic field has a magnetic field strength protection effect on the permanent magnets, and the permanent magnets will not be demagnetized. A number of identical separate coils form a number of identical phase sequence coil groups. Every three identical phase sequence coil groups form a U+, V+, W+ and U-, V-, W- and O-line connection ports, that is, the stator three-phase coils of this positive and negative combination of 3 + 1 (neutral line) for the positive and 3 + 1 (neutral line) for the negative. The Y-star connection method has a three-phase and one-neutral line output method, and is divided into two stator silicon steel windings A and B with different magnetic poles. For example: the stator has 24 slots and 4 poles, the coil is star-connected, and the output is two sets of U, V, W phase sequence lines and one neutral line, a total of 7 output lines. The stator coil is composed of two identical 24-slot and 4-pole coils. The two sets of U, V, W phase sequence lines are respectively connected to the positive current and the negative current, and the waveforms of the currents are the positive and negative half waveforms of the same sine wave. For the positive and negative half waveforms of the trapezoidal wave and the modified wave pulses, the stability of the motor operation is slightly poor and should not be used as much as possible. The coil current waveforms and pulse intervals differ by 180 degrees in the π cycle. The power supply characteristics of each individual phase sequence input are that the amplitude of the pulsating magnetomotive force is at the axis of the phase winding and the position is fixed. These two positive and negative half waveforms are observed on an oscilloscope and synthesized into a complete pulsed sine wave. By adding the three single-phase magnetomotive forces, the synthesized magnetomotive force of the three-phase winding is obtained. The potential angle difference of the three-phase wires U, V, W of the synthesized 24-slot and 4-pole is still 120 degrees, and the frequency is 20 - 400 Hz for easy speed regulation. The output leads cannot be interchanged with each other because the input half-wave current belongs to the characteristics of direct current and has positive and negative polarities. If connected wrongly, it will be burned out! The power supply for a dual three-phase permanent magnet motor is input by configuring an additional three-phase full-wave bridge rectifier. There are several series of products according to the power supply and configuration. The power supply is divided into various power supplies such as municipal three-phase power supply, battery DC power supply, or solar cells.If the input is a three-phase AC power supply directly connected to a matching rectifier for output after rectification, and if the input power is DC, it needs to be first converted into three-phase AC through an inverter oscillation and then input for output after rectification. The main basic circuit of the rectifier is a three-phase full-wave bridge rectifier circuit, which generates three-phase sinusoidal pulse half-waves. According to different requirements of the required power supply voltage, current, and power, the electronic components and circuits in the three-phase full-wave bridge rectifier basic circuit are adjusted accordingly. For example, the three-phase full-wave bridge diode thyristor rectifier circuit is mainly used for small-power motors, the three-phase full-wave bridge MOS tube rectifier circuit is mainly used for medium and small-power motors, and the three-phase full-wave IGBT tube bridge rectifier circuit is mainly used for medium and large-power motors. For extremely large power, it needs to be borne by a more complex integrated rectifier circuit, forming different series of products of the rectifier; in order to improve the power supply quality, during the rectification process, it also needs to go through a digital coding controller center AI integrator composed of control logic, frequency conversion and modulation, pulse width modulation, voltage and current stabilization, reactance filtering circuit, intelligent control circuit adjustment, and supercapacitor charge and discharge circuit switching switch, etc. There are several connection intelligent control AI circuit adjustment socket terminals on the intelligent coding controller, which separately supply half-sine wave pulse currents with upper and lower waveforms to two sets of stator coils of a double-connected three-phase permanent magnet motor, one generating an N-pole composite magnetic field and the other generating an S-pole composite magnetic field. This new composite magnetic field is neither the original electromagnetic field nor the original permanent magnet magnetic field. It is a dynamic electromagnetic waveform with the original electromagnetic field, and the magnetic field intensity is greater than the new dynamic composite magnetic field of the original electromagnetic field and the permanent magnet constant magnetic field Br. Due to the addition of the permanent magnet magnetic field, the intensity of the composite magnetic field is upgraded from 0 to B. r, attach the characteristics of a dynamically changing magnetic field controlled by design to the permanent magnet's constant magnetic field. At the same time, the pulsed currents of the two pairs of energized coils have a phase difference of 180 degrees of a sine half-wave cycle, which comprehensively forms a complete single-phase sine wave pulsating magnetomotive force. When currents with a 120-degree electrical angle difference are applied, a combined electromagnetic field similar to a three-phase sine wave current is formed, thus generating a three-phase dynamic rotating magnetic field; the number of slots in the stator silicon steel sheet of a double-connected three-phase permanent magnet motor is 12, 24, 48, 96, 192, etc.; install two ferrule structures on the inner surface of the stator silicon steel core. Each ferrule is closely attached to the silicon steel core, and they are firmly connected by male-female slots or fixed with special glue to prevent dislocation and loosening. There is an air gap between the ferrule and the rotor. The ferrule is a component of the stator structure. The material is selected as resin fiber or aluminum metal. This ferrule is used to install several conical or trapezoidal permanent magnets on the stator. The ferrule is processed with notches, and the number of notches is the same as the number of stator slots, which blocks the permanent magnets from falling out and fixes the permanent magnets. The conical or trapezoidal small surface of the permanent magnet faces the rotor air gap, and the reverse side of the permanent magnet is closely attached to the surface of the silicon steel core pole. The electromagnetic polarity of the silicon steel core is the same as the series polarity of the permanent magnet. The combined synthetic composite magnetic field strength is greater than that of a single permanent magnet and also greater than that of a single silicon steel electromagnetic pole magnetic field strength, which can effectively drive the rotor to rotate strongly, improve the output power, which is equivalent to saving electric energy or saving copper wire and improving the motor efficiency. The two ferrules respectively become the components of the stator silicon steel winding A and the stator silicon steel winding Aa. High-temperature-resistant permanent magnets should be selected inside the ferrule. The permanent magnets inside the ferrule are in a magnetic field protection state when the coil is energized and working, and the combined magnetic field formed with the coil electromagnetic field is an enhanced magnetic field, which can improve the output power of the rotor; for heat dissipation, an air-cooling or oil-cooling system can be adopted; the wiring ends of several lead-out wires of its stator coil winding are pre-connected to a special plug with 6 live plugs and 1 neutral plug, a total of 7 plugs according to the design requirements. When in use, insert the special plug into the matching special socket. The number and cross-sectional shape and size of the metal rods of the special plug are exactly the same as the holes of the special socket. The power output line of the rectifier is connected to a special socket with 6 live holes and 1 neutral hole, a total of 7 holes. This is not only convenient to use but also safe and reliable; the motor housing is generally made of cast iron, stainless steel, alloy aluminum or industrial hard plastic, and the shape is determined according to the working environment.

[0004] The technical solution provided by the present invention is as follows: A dual three-phase permanent magnet motor includes a stator, a stator inner ring, a rotor, and a housing. The stator structure is such that permanent magnets are installed on the surface of the electromagnetic core of the silicon steel laminated sheets in the stator coil, forming a series structure of electromagnets and permanent magnets. Each single-phase AC coil of the traditional motor is designed and manufactured into two separate DC coil groups. These two DC coil groups are respectively designed as two independent stator coil windings and installed in the same stator housing. One single DC coil is defined to directly conduct the positive pulse direct current in the full-wave bridge rectifier, and the other single DC coil is defined to directly conduct the other half of the negative pulse direct current in the full-wave bridge rectifier. In this way, the two separate DC coil groups operate alternately, with one being energized and the other being in a short-term power-off state. The surface polarity of the permanent magnets installed in series on the end face of the DC coil silicon steel soft magnetic core is the same as the electromagnetic field polarity of the DC coil. The pulsed electromagnetic field generated by energization is superimposed on the constant magnetic field of the permanent magnet to form a new composite magnetic field of dynamic pulses. The surface magnetic polarities of these two separate and independent DC coils are opposite. A three-phase AC power supply is respectively connected to the corresponding positive 3 + 1 and negative 3 + 1 connection terminals in the stator coil through a three-phase full-wave bridge rectifier, with a Y-star connection method, and the output is in the form of three-phase and one neutral, divided into two stator silicon steel windings A and stator silicon steel winding Aa with different magnetic poles, and installed in the same stator housing.

[0005] For the above-mentioned dual three-phase permanent magnet motor, its stator inner ring structure: A ring structure is installed on the inner surface of the stator silicon steel core. This ring is closely attached to the silicon steel core, and they are firmly connected by male and female slots or pasted with special glue to prevent dislocation and loosening. There is an air gap between the ring and the rotor. The ring is a component of the stator structure, and the material is selected from ferroalloy or aluminum metal. This ring is used to install several frustum-shaped or trapezoidal permanent magnets of the stator. The ring is processed with notches, and the number of notches is the same as the number of stator slots, which blocks the permanent magnets from falling out and fixes the permanent magnets. The frustum or trapezoidal small surface of the permanent magnet faces the rotor air gap, and the reverse side of the permanent magnet is closely attached to the surface of the silicon steel core pole. Moreover, the outer dimension of each permanent magnet is slightly smaller than the width dimension of the electromagnetic soft magnetic pole. When the electromagnetic polarity of the silicon steel core is the same as the series polarity of the permanent magnet, the comprehensive synthetic composite magnetic field intensity is greater than that of a single permanent magnet and also greater than that of a single silicon steel electromagnetic pole magnetic field intensity, which can effectively drive the rotor to rotate strongly, improve the output power, which is equivalent to saving electric energy or saving copper wire and improving the motor efficiency. High-temperature resistant permanent magnets should be selected inside the ring. The permanent magnets inside the ring are in a magnetic protection state when the coil is energized and working, and the comprehensive magnetic field formed with the coil electromagnetic field is an enhanced magnetic field, which can improve the output power of the rotor and respectively become components of the stator silicon steel winding A and the stator silicon steel winding Aa, and can be made of resin fiber material.

[0006] The described dual three-phase permanent magnet motor has the following rotor structure: The corresponding rotor structure is that two permanent magnet drums are installed on the same rotating shaft. The drums are composed of stacked silicon steel sheets. The permanent magnet polarities on the surfaces of the two drums are opposite, and the permanent magnet polarities on each drum are the same. The magnetic polarities on the two drums are the same as the corresponding stator magnetic polarities, and they rotate due to like-pole repulsion. The surface structures of the permanent magnets on the two rotors are slopes, processed into arc-shaped slopes or inclined slopes, to ensure that the rotors rotate synchronously and in the same direction without reverse rotation. If reverse rotation is required, it must be operated through the speed regulator of the motor. Drum B corresponds to stator silicon steel winding A, and drum Bb corresponds to stator silicon steel winding Aa, achieving rotation due to like-pole repulsion. The number of long permanent magnets installed on the rotor is generally 1 / 2 of the stator slot number plus 1. To prevent the permanent magnets from attracting and flipping, a reasonable distance should be maintained as much as possible. The angular difference range of the concentric angular positions of the two drums installed on the same rotating shaft is between 0 and 7 degrees. A protective ring is installed on the outer diameter surface of the rotor to protect safety during high-speed rotation. The protective ring is made of resin fiber material. The additional speed regulator is connected to the rotating shaft. The speed regulator has reverse, neutral, low speed, medium-high speed, automatic intelligent gears, etc. for adjusting operation.

[0007] Regarding the described dual three-phase permanent magnet motor, its power supply characteristics are as follows: The power supply waveform supplied to the motor must be the positive and negative sine wave forms after three-phase full-wave bridge rectification that conform to three-phase sine waves, and are respectively connected to the corresponding wiring terminals of the stator coils, provided by the rectification, inversion, frequency conversion and other functional ports of the externally configured intelligent coding controller.

[0008] Regarding the described dual three-phase permanent magnet motor, the wiring ends of several lead-out wires of its stator coil windings are pre-connected to special plugs according to design requirements. During use, the special 7-pole plug is inserted into the matching 7-hole special socket. The number, cross-sectional shape and size of the metal plug rods of the special plug are exactly the same as the holes of the special socket. The power output line of the rectifier and other functional control output lines are pre-connected to the special socket according to design requirements, and should comply with the safety electrical appliance GB standard.

[0009] The beneficial effects of the present invention are as follows: The present invention provides a double-connected three-phase permanent magnet motor that is green, safe, novel in structure, and reliable in operation, including: a stator, a stator inner ring, a rotor, and a housing; the three-phase full-wave bridge rectifier in the configured intelligent coding controller outputs several groups of pulsed sine half-wave direct current to supply the double-connected stator coils respectively, and a characteristic form of three-phase alternating current is formed comprehensively and orderly in several groups of stator coils. The composite magnetic field formed by the permanent magnets in the stator ring forms a dynamic rotating magnetic field at the air gap, causing the rotor to be forced to rotate and output mechanical power; there are two silicon steel laminated double-connected drums on the coaxial of the rotor, several permanent magnets are installed on the drums, the permanent magnetic polarities on the surfaces of the two drums are opposite, the permanent magnetic polarities on each drum are the same, and the magnetic polarities on the two drums are the same as the corresponding stator magnetic polarities. The like polarities repel each other and rotate. A protective ring is installed on the rotor surface, forming a new rotor combination structure and a new stator combination structure. This machine is green, environmentally friendly, close to zero emissions and zero pollution, energy-saving, safe, low in use cost, low in failure rate, can instantaneously increase the composite magnetic field intensity and increase the output power, and is widely used as the power source for various large, medium and small equipment, such as the power source for electric vehicles, the power source for robots, the power source for yachts, the power source for low-altitude aircraft, the power source for ships, the power source for mobile equipment, and the power source for various special equipment for military and civilian innovation, and it has very high social and economic value effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic cross-sectional view of a double-connected three-phase permanent magnet motor of the present invention and also the abstract drawing.

[0011] Figure 2 It is a schematic C-C cross-sectional view of a double-connected three-phase permanent magnet motor of the present invention.

[0012] Figure 3 It is a schematic D-D cross-sectional view of a double-connected three-phase permanent magnet motor of the present invention.

[0013] Figure 4 It is a schematic diagram of the stator slot and the positive connection of the coil power supply inside the housing of a double-connected three-phase permanent magnet motor of the present invention.

[0014] Figure 5 It is a schematic diagram of the stator slot and the negative connection of the coil power supply inside the housing of a double-connected three-phase permanent magnet motor of the present invention.

[0015] Figure 6 It is a schematic B cross-sectional view of the rotor drum of a double-connected three-phase permanent magnet motor of the present invention.

[0016] Figure 7 It is a schematic Bb cross-sectional view of the rotor drum of a double-connected three-phase permanent magnet motor of the present invention.

[0017] Figure 8Schematic diagram of single-phase positive and negative sine waveforms of the DC power supply output by a three-phase full-wave bridge rectifier externally connected to a dual three-phase permanent magnet motor of the present invention on an oscilloscope.

[0018] In the figure: 1. A dual three-phase permanent magnet motor; 2. Stator; 3. Rotor; 4. Stator core A1 - 24 slots; 5. Stator core B1 - 24 slots; 6. Stator A; 7. Stator Aa; 8. Stator permanent magnet; 9. Outer shell; 10. Rotating shaft; 11. Air gap; 12. Inner sleeve of the stator; 13. Stator coil A; 14. Stator coil Aa; 15. Schematic of the half-wave form of the single-phase positive sine pulse of the thick black line A+; 16. Schematic of the half-wave form of the single-phase negative sine pulse of the thick black line A-; 17. Negative half-wave form of the three-phase rectified sine pulse; 18. Negative half-wave form of the three-phase rectified sine pulse; 19. Coding controller; 20. Rotor drum B; 21. Rotor drum Bb; 22. Rotor permanent magnet B; 23. Rotor permanent magnet Bb; 24. Protective ring; 25. Punched rotor silicon steel sheet. Specific embodiments

[0020] In the embodiments of the present invention, referring to the above Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 7 and Figure 8As shown, a dual three-phase permanent magnet motor 1 includes four components: a stator 2, a stator inner ring 12, a rotor 3, and a housing 9. Two identical silicon steel stator cores, namely stator core A with 1-24 slots 4 and stator core B with 1-24 slots 5, are installed inside the stator 2. Copper wire winding coils are embedded in the slots, including stator coil A13 and stator coil Aa14. The surface magnetic polarities of the stator permanent magnets 8 installed on the end faces of the two cores are different. A positive pulse direct current is applied to the stator coil A13 in one of the two coils, and a negative pulse direct current is applied to the other stator coil Aa14. In this way, the electromagnetic field polarities generated in the two coils are also opposite. The polarities of the permanent magnets installed in the two coils must be the same as the electromagnetic field polarities of the DC coils to maintain a series relationship. Thus, the electromagnetic field polarity of each coil and the permanent magnetic field polarity generate a new composite magnetic field due to the same polarity, and the magnetic fields are superimposed in series to enhance. A number of identical separate coils form a number of identical phase sequence coil groups. Each three identical phase sequence coil groups form a U+, V+, W+ and U-, V-, W- and O-line connection ports, that is, a positive 3+1 and a negative 3+1 combination of stator three-phase coils. In the Y-star connection method, the outgoing line is in the form of three-phase and one neutral, and is divided into two stators A6 and stator Aa7 with different magnetic poles. For example: for a 24-slot 4-pole stator, with the coil in the star connection method, the outgoing line is two sets of U, V, W phase sequence lines and one neutral line, a total of 7 outgoing lines. The stator coil is composed of two identical 24-slot 4-pole coils. The two sets of U, V, W phase sequence lines are respectively connected to the positive current and the negative current, and the waveforms of the currents are the positive and negative half waveforms of the same sine wave. The coil current waveforms and the pulse intervals differ by a cycle of π / 180 degrees. The power supply characteristics of each individual phase sequence input are that the amplitude of the pulsating magnetic motive force is at the axis of the phase winding and the position is fixed. These two positive and negative half waveforms are observed on an oscilloscope and synthesized into a complete pulsed sine wave. By adding the three single-phase magnetic potentials, the synthesized magnetic potential of the three-phase winding is obtained. The potential angle difference of the three phase lines U, V, W of the synthesized 24-slot 4-pole is still 120 degrees, and the frequency is 20 - 400 Hz for easy speed regulation. The outgoing wire ends cannot be interchanged with each other because the input half-wave current belongs to the characteristics of direct current and has positive and negative polarities. If connected wrongly, it will be burned out! The power supply is input by an additional coding controller 19. The coding controller 19 has several series of products according to the power supply and configuration. The main basic rectifying circuit in the coding controller 19 is a three-phase full-wave bridge rectifying circuit, which generates three-phase sine pulse half-waves. The half-sine wave pulse currents with upper and lower waveforms respectively are separately supplied to the two stator coils of a dual three-phase permanent magnet motor 1, one generating an N-pole composite magnetic field and the other generating an S-pole composite magnetic field;Install a structure of two stator inner rings 12 on the inner ring surface of the stator silicon steel core. Each ring is closely attached to the silicon steel core, and they are firmly connected by male and female slots to prevent dislocation and loosening. There is an air gap between the ring and the rotor for the motor stator and rotor. The stator inner ring 12 is a component structure of the stator. The material is selected from ferroalloy or aluminum metal. This ring is used to install several frustum-shaped or trapezoidal permanent magnets of the stator. The ring is processed with notches, and the number of notches is the same as the number of stator slots to prevent the permanent magnets from falling out and fix the permanent magnets. The small frustum or trapezoidal surface of the permanent magnet faces the rotor air gap 11, and the reverse side of the permanent magnet is closely attached to the surface of the silicon steel core pole. When the electromagnetic polarity of the silicon steel core is the same as the series polarity of the permanent magnet, the combined synthetic composite magnetic field strength is greater than that of a single permanent magnet and also greater than that of a single silicon steel electromagnetic pole magnetic field strength, which can effectively drive the rotor to rotate strongly, improve the output power, equivalent to saving electric energy or saving copper wire and improving the motor efficiency. They respectively become components of the stator silicon steel winding A13 and the stator silicon steel winding Aa14. High-temperature-resistant permanent magnets should be selected inside the ring. The permanent magnets inside the ring are in a magnetic protection state when the coil is energized, and the combined magnetic field formed with the coil electromagnetic field is an enhanced magnetic field, which can improve the output power of the rotor; the corresponding rotor structure is to install two double-connected permanent magnet rotor drums B20 and rotor drum Bb21 on the coaxial shaft 10. The drum is composed of laminated silicon steel sheets. The polarities of the permanent magnets installed on the surfaces of the two drums are opposite, but the polarities of the permanent magnets on each drum are the same. The magnetic polarities of the two drums are the same as the corresponding stator magnetic polarities. The rotor drum B20 corresponds to the stator coil winding A13, and the rotor drum Bb21 corresponds to the stator coil winding Aa14, realizing rotation due to like-pole repulsion. The surface structure of the permanent magnets on the two rotors is a slope to ensure that the rotors rotate synchronously and in the same direction without reverse rotation. If reverse rotation is required, it must be operated through an additional speed regulator of the motor to achieve rotation due to like-pole repulsion. A protective ring 24 is installed on the rotor surface to prevent safety during high-speed rotation. The shape and number of the punched holes 25 in the rotor silicon steel sheets are determined by the motor design inertia; for heat dissipation, an air-cooling or oil-cooling system can be adopted; the wiring ends of several lead wires of its stator coil winding are pre-connected to a special plug with 7 plugs including 6 live plugs and 1 neutral plug according to the design requirements; the motor housing is generally made of cast iron, stainless steel, or aluminum, and the shape is determined according to the working environment; the power supply waveform supplied to the motor must conform to the single-phase thick black line A + single-phase positive sine pulse half-waveform schematic 15, black line A - single-phase negative sine pulse half-waveform schematic 16, three-phase rectified sine pulse negative half-waveform 17, and three-phase rectified sine pulse negative half-waveform 18 shown on the oscilloscope after three-phase full-wave bridge rectification of three-phase sine waves, and are respectively connected to the corresponding wiring terminals of the stator coil.

[0021] The above is only a preferred embodiment of the present invention and cannot limit the scope of implementation of this application. That is, all equal changes and modifications made according to the scope of this application should still fall within the scope covered by the present invention.

Claims

1. A double-connected three-phase permanent magnet motor, characterized in that: include, The motor consists of four parts: a stator, an inner ring of a stator, a rotor and a casing. The stator structure adopts a permanent magnet installed on the surface of the silicon steel laminated electromagnetic core in the stator coil to form a series structure of the electromagnet and the permanent magnet. Therefore, the single AC coil of each phase of the traditional motor is designed and manufactured into two separate groups of DC coils, which respectively form two independent stator silicon steel coil windings and are separately installed in the same stator casing. One separate DC coil is limited to the positive pulse DC power directly passed into the three-phase full-wave bridge rectifier to produce the N pole on the surface of the silicon steel core, and the other separate DC coil is limited to the other half of the negative pulse DC power directly passed into the three-phase full-wave bridge rectifier to produce the S pole on the surface of the silicon steel core. In this way, one of the two separate DC coils is energized, and the other is not. In a state of short power failure, the magnetic poles are alternately changed. The surface polarity of the permanent iron installed in series on the end face of the DC coil silicon steel core is the same as the polarity of the DC coil electromagnetic field. The pulse electromagnetic field generated by power-on is superimposed on the permanent magnet constant magnetic field to form a new composite magnetic field of dynamic pulse. The surface magnetic polarities of these two separate and independent stator DC coils are opposite. Several identical groups of phase sequence coils are composed of several identical individual coils. Every three groups of identical phase sequence coils constitute a U+, V+, W+ and U-, V-, W- and O line connection port, that is, a stator three-phase coil with a positive and negative combination of positive 3+1 and negative 3+1. The center of the Y-star connection is zero. The stator silicon steel winding A and the stator silicon steel winding Aa structure with two different magnetic poles are installed in the same stator housing.

2. The stator of a double-connected three-phase permanent magnet motor according to claim 1, characterized in that: Including, stator inner ring structure: two ring structures are installed on the surface of the inner ring of the stator silicon steel core, the two rings are tightly attached to the silicon steel core, they are firmly connected by yin and yang slots or glued with special glue, the rings are made of resin fiber material, there is an air gap between the rings and the rotor, the ring is a component of the stator, this ring is used to install several round columnar or trapezoidal permanent magnets of the stator, there are notches on the ring, the number of notches is the same as the number of stator slots, the permanent magnet round The small table or trapezoidal face is facing the rotor air gap, the back of the permanent magnet is closely attached to the surface of the silicon steel core pole, the electromagnetic polarity of the silicon steel core is connected in series with the permanent magnet, the polarity is the same, and the size of each permanent magnet is slightly smaller than the width of the electromagnetic silicon steel pole. Two stator inner rings are installed in the same stator shell, the permanent magnets in the two rings have opposite polarities, the polarity of the permanent magnet in each ring is connected in series with the electromagnetic polarity of the stator silicon steel at the installation position, and the rings become components of the stator silicon steel winding A and the stator silicon steel winding Aa respectively.

3. The rotor of a double-connected three-phase permanent magnet motor according to claim 1, characterized in that: The invention comprises: a rotor structure in which two permanent magnet drums are installed on the same rotating shaft, the drums are composed of stacked silicon steel sheets, a plurality of permanent magnets are installed on the surfaces of the two drums, the polarity of the plurality of permanent magnets on each drum is the same, the polarity of the permanent magnets on the two permanent magnet drums is opposite, the magnetic polarity on the two drums is the same as the corresponding magnetic polarity of the stator, drum B corresponds to stator silicon steel winding A, drum Bb corresponds to stator silicon steel winding Aa, so that like magnetic poles repel each other and rotate, the surface structure of the plurality of permanent magnets on the two rotors is a slope surface, which is processed into an arc slope surface or an inclined slope surface to ensure that the rotors rotate synchronously and in the same direction, the number of long permanent magnets installed on the rotor is generally set to 1 / 2 of the number of stator slots plus 1, the concentric angle position difference angle range of the two drums installed on the same rotating shaft is 0 to 7 degrees, and the retaining ring sleeve installed on the outer diameter surface of the rotor is made of resin fiber material.

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