Permanent magnet radial type self-inductance generator motor

Abstract

The utility model discloses a permanent magnet radial type self-inductance generator motor, a radial stator is composed of a winding iron core and a winding-free iron core, the surface of the winding-free iron core is pasted with homopolar permanent magnet patches, and the winding-free iron core is magnetized by the patches to form a magnetic closed loop. When the relay I is switched on and the relay II is switched off, the motor stator winding generates a magnetic field to drive the rotor to rotate; when the permanent magnet block rotates by the width of the working surface of the stator winding iron core, the relay I is switched off, the relay II is switched on, and the stator permanent magnet patch generates the same polarity as the permanent magnet block to repel the permanent magnet rotor to rotate; meanwhile, the stator winding iron core generates self-induced electromotive force, the stator permanent magnet patch magnetizes the stator winding iron core to generate induced electromotive force, self-induced current forms a closed loop through the motor stator, the relay II, the rechargeable battery and the motor stator winding, and electric energy is guided to the rechargeable battery or other electric equipment, so that permanent magnet energy is effectively utilized; and electric energy recovery is realized.

Description

Technical Field

[0001] This utility model belongs to the field of permanent magnet motor technology, specifically a permanent magnet radial self-inductance generator motor. Background Technology

[0002] When an existing electric motor is in operation, the winding core of the motor generates a self-induced electromotive force due to changes in current. However, due to the structural factors of the motor, this energy is usually consumed by heat or other internal losses and cannot be recycled, which poses many problems. (1) Energy efficiency: The energy of the self-induced electromotive force of the motor is converted into heat and dissipated, resulting in a decrease in the overall energy efficiency of the motor; (2) Equipment reliability: The continuous heating of the motor may cause the insulation material to age and shorten the life of the motor; (3) Negative environmental impact: According to statistics, every 1 kWh of wasted electricity corresponds to 0.7-1.2 kg of CO2 emissions (in the case of thermal power generation), and medium-sized motors increase carbon emissions by 5-10 tons per year. Therefore, the loss of self-induced electromotive force will lead to an increase in carbon emissions and a waste of electrical energy resources; (4) Technical performance constraints: The failure of the motor to recover energy will cause a delay in the motor speed regulation (the response time of traditional motors is 100-200 ms, while the energy feedback system can shorten it to 20-50 ms).

[0003] During operation, changes in the stator winding current of a permanent magnet motor also generate a self-induced electromotive force (i.e., back electromotive force), the energy of which is usually dissipated as heat through the winding resistance. Existing technology shows that the self-induced electromotive force generated by a permanent magnet motor can be recovered as electrical energy through power electronic devices (such as inverters) and energy storage systems. For example, during braking, the motor switches to generator mode, and the inverter reverses the current direction, converting mechanical energy into electrical energy stored in a battery or supercapacitor (Application of permanent magnet synchronous motors in braking energy recovery of pure electric commercial vehicles, Automotive Test Network). Other patented technologies show that by designing a stator winding with a gapless magnetic circuit, combined with a full-bridge switching circuit, the self-induced current can be recovered in real time to a capacitor or battery. For example, when the rotor interacts with the stator magnetic field, the back electromotive force generated by the switching of the coils is stored through diodes and capacitors, achieving efficient energy recovery (CN1299178A, CN211239622U). However, the above technologies all involve the use of external electrical components or circuit designs to achieve energy recovery, which presents technical problems such as complex structure and cumbersome energy recovery process. Utility Model Content

[0004] The purpose of this invention is to solve the technical problems of complex structure and cumbersome process of energy recovery in existing permanent magnet motors, and to provide a permanent magnet radial self-inductance generator motor that achieves energy recovery simply by changing the arrangement structure of the permanent magnet motor stator and permanent magnet rotor.

[0005] To achieve its purpose, this utility model adopts the following technical solution:

[0006] A permanent magnet radial self-inductance generator motor includes a motor body, at least one set of radial stators and permanent magnet rotors, a power switch control system and a generator control switch.

[0007] The machine body is in the shape of a horizontal cylinder, and the power switch control system and the power generation control switch are installed on the top of the machine body;

[0008] The radial stator is in the shape of a horizontal cylinder and is precisely installed in the inner cavity of the machine body. The stator is equipped with winding iron cores and unwinding iron cores at intervals. The surface of the unwinding iron core is provided with permanent magnet patches.

[0009] The permanent magnet rotor is installed in the radial stator cavity and includes a rotor shaft. A permanent magnet rotor assembly is sleeved outside the rotor shaft. Several permanent magnet blocks are symmetrically arranged on the outer periphery of the permanent magnet rotor assembly. A non-magnetic protective disk for the permanent magnet blocks is provided at both ends of the permanent magnet blocks along the axis of the permanent magnet rotor assembly.

[0010] The power generation control switch includes solid-state relay I and solid-state relay II;

[0011] The power switch control system includes a circuit control board, a positive power supply terminal, and a negative power supply terminal. The circuit control board is electrically connected to the permanent magnet rotor position detection line via an optical medium detection signal line. The positive power supply terminal is electrically connected to the input terminals of the circuit control board and solid-state relay I. The output terminal of the circuit control board is electrically connected to the input terminals of solid-state relay I and solid-state relay II, as well as the negative power supply terminal. The output terminal of solid-state relay I is electrically connected to solid-state relay II and the input terminal of the motor stator winding. The input terminal of solid-state relay II is electrically connected to the input terminal of the rechargeable battery. The output terminals of the motor stator winding and the rechargeable battery are electrically connected to the negative power supply terminal.

[0012] As a further preferred embodiment of the present invention, the gap between the radial stator inner cavity and the outer wall of the non-magnetic protective disk of the rotor permanent magnet block is 1mm.

[0013] Furthermore, the two ends of the rotor shaft are respectively inserted into the flange holes of the left flange and the right flange, and the left flange and the right flange are respectively fastened to the two ends of the machine body.

[0014] Furthermore, a left flange bearing is provided in the flange hole of the left flange, and a right flange bearing is provided in the flange hole of the right flange. The two ends of the rotor shaft are respectively inserted into the bearing holes of the left flange bearing and the right flange bearing.

[0015] Furthermore, a left bearing end cover is provided on the outer side of the left flange bearing, and a right bearing end cover is provided on the outer side of the right flange bearing.

[0016] Furthermore, the left flange and the right flange are fastened to both ends of the machine body by fastening bolts.

[0017] Furthermore, the stator winding core and the unwinding core are made in pairs of 2, 4, 6, 8...N, or 2, 3, 4, 5, 6, 7...N.

[0018] Furthermore, when the stator winding core and the unwound core are manufactured in equal pairs of 2, 4, 6, 8...N, the number of permanent magnet blocks installed is 2, 4, 6, 8...N; when the stator winding core and the unwound core are manufactured in equal pairs of 2, 3, 4, 5, 6, 7...N, the number of permanent magnet blocks installed is 2, 3, 4, 5, 6, 7...N.

[0019] Furthermore, the working surface of the stator winding core is higher than the working surface of the unwound core. After the stator permanent magnet patch is attached, the working surface of the stator winding core is parallel to the working surface of the stator permanent magnet patch within the circumference.

[0020] Furthermore, the permanent magnet blocks are vertically installed along the rotor shaft axis between two adjacent permanent magnet blocks and their non-magnetic protective disks, with the magnetic field direction of each permanent magnet block facing the rotor shaft direction.

[0021] Compared with existing permanent magnet motors, the advantages of this invention are as follows:

[0022] This invention employs a unique arrangement structure of a radial stator and a permanent magnet rotor. The radial stator consists of a wound core and a non-wound core. A permanent magnet patch of the same polarity is attached to the surface of the non-wound core. The patch magnetizes the non-wound core, naturally forming a closed magnetic loop. When the permanent magnet block on the permanent magnet rotor is attracted, the optical media detection signal line on the circuit control board detects that the rotor power supply is in the on position. The circuit control board then controls solid-state relay I to turn on and solid-state relay II to turn off. The stator winding core generates the same polarity as the stator permanent magnet patch. At this time, the permanent magnet rotor and the stator winding core do not generate torque. Current flows from the positive terminal of the power supply through solid-state relay I and the motor stator winding to the negative terminal of the power supply. The motor stator winding generates a magnetic field that drives the rotor to rotate. When the permanent magnet at that location on the permanent magnet rotor... After the rotor block rotates past the working surface width of the stator winding core, the optical media detection signal line on the circuit control board detects that the rotor power supply is in the off position. The circuit control board then controls solid-state relay I to turn off and solid-state relay II to turn on. At this time, the stator permanent magnet patch magnetizes the stator winding core, generating the same polarity as the rotor permanent magnet block at that location, thus repelling the rotation of the permanent magnet rotor. Simultaneously, at the instant solid-state relay I turns off, the stator winding core generates a self-induced electromotive force, and the stator permanent magnet patch also magnetizes the stator winding core, generating an induced electromotive force. At the same time, solid-state relay II turns on, and the self-induced current flows from the input terminal of the motor stator winding through solid-state relay II, then through the rechargeable battery, and finally through the output terminal of the motor stator winding, forming a closed loop and guiding electrical energy to the rechargeable battery or other electrical equipment. Therefore, the permanent magnet rotor receives torque, and the stator winding core converts magnetic field energy into electrical energy output, effectively utilizing permanent magnet energy and achieving energy recovery. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the permanent magnet radial self-inductance generator motor of this utility model;

[0024] Figure 2 This is a schematic diagram of the stator composition in the permanent magnet radial self-inductor generator motor of this utility model;

[0025] Figure 3 This is a schematic diagram of the rotor composition in the permanent magnet radial self-inductor generator motor of this utility model;

[0026] Figure 4 This is a schematic diagram illustrating the working principle of the permanent magnet radial self-inductor generator motor of this utility model.

[0027] Figure 5 This is a schematic diagram of the circuit connection between the power switch control system and the generator control switch of this utility model;

[0028] Reference numerals: 1. Left bearing cover; 2. Fastening bolt; 3. Left flange bearing; 4. Left flange; 5. Rotor shaft; 6. Permanent magnet block; 7. Rotor permanent magnet non-magnetic protective disc; 8. Stator permanent magnet patch; 9. Stator winding core; 10. Radial stator; 12. Power switch control system; 13. Generator control switch; 14. Right flange; 16. Machine body; 18. Right flange bearing; 19. Right bearing end cover; 20. Non-winding core; 21. Permanent magnet rotor; 22. Permanent magnet rotor assembly. Detailed Implementation

[0029] The structure and working principle of the permanent magnet radial self-inductance generator motor of this utility model will be described in detail below with reference to the accompanying drawings.

[0030] like Figure 1-3 As shown, this utility model provides a permanent magnet radial self-inductance generator motor.

[0031] The system includes a body 16, a radial stator 10, a permanent magnet rotor 21, a power switch control system 12, and a power generation control switch 13. The body 16 is a horizontal cylindrical shape, and the power switch control system 12 and the power generation control switch 13 are mounted on the top of the body 16. The radial stator 10 is a horizontal cylindrical shape and is precisely installed in the inner cavity of the body 16. The radial stator 10 has winding cores 9 and unwinding cores 20 spaced apart inside, and the surface of the unwinding cores 20 is provided with permanent magnet patches 8. The permanent magnet rotor 21 is installed in the inner cavity of the radial stator 10 and includes a rotor shaft 5. A permanent magnet rotor assembly 22 is sleeved on the outside of the rotor shaft 5. Several permanent magnet blocks 6 are symmetrically arranged on the outer periphery of the permanent magnet rotor assembly 22. A non-magnetic protective disk 7 for the permanent magnet blocks is provided at both ends of the permanent magnet blocks 6 along the axial direction of the permanent magnet rotor assembly 22. The gap between the outer wall of the non-magnetic protective disk 7 and the inner cavity of the radial stator 10 is 1 mm.

[0032] The power generation control switch 13 includes solid-state relay I and solid-state relay II;

[0033] The power switch control system 12 includes a circuit control board, a positive power supply terminal, and a negative power supply terminal. The circuit control board is electrically connected to the permanent magnet rotor 21 to detect its position via an optical medium detection signal line. The positive power supply terminal is electrically connected to the input terminals of the circuit control board and solid-state relay I. The output terminal of the circuit control board is electrically connected to the input terminals of solid-state relay I and solid-state relay II, as well as the negative power supply terminal. The output terminal of solid-state relay I is electrically connected to solid-state relay II and the input terminal of the motor stator winding. The input terminal of solid-state relay II is electrically connected to the input terminal of the rechargeable battery. The output terminals of the motor stator winding and the rechargeable battery are electrically connected to the negative power supply terminal.

[0034] Specifically, the rotor shaft 5 is inserted into the flange holes of the left flange 4 and the right flange 14 at both ends, and the left flange 4 and the right flange 14 are fastened to the two ends of the machine body 16 by bolts 2.

[0035] A left flange bearing 3 is installed in the flange hole of the left flange 4, and a right flange bearing 18 is installed in the flange hole of the right flange 14. The two ends of the rotor shaft 5 are respectively inserted into the bearing holes of the left flange bearing 3 and the right flange bearing 18. A left bearing end cover 1 is provided on the outside of the left flange bearing 3, and a right bearing end cover 19 is provided on the outside of the right flange bearing 18.

[0036] In this invention, the stator winding core 9 and the unwinding core 20 are manufactured in equal quantities, and the number of permanent magnet blocks 6 is 2, 4, 6, 8...N.

[0037] The working surface of the stator winding core 9 is higher than the working surface of the unwound core 20. After the stator permanent magnet patch 8 is attached, the working surface of the stator winding core 9 is parallel to the working surface of the stator permanent magnet patch 8 within the circumference. The permanent magnet block 6 is installed vertically along the rotor shaft 5 between two adjacent permanent magnet blocks and their non-magnetic protective disks 7, and the magnetic field direction of each permanent magnet block 6 is towards the rotor shaft 5.

[0038] like Figure 4 As shown, the working principle of this utility model is as follows: Figure 4 (a) In the de-energized mode, the stator winding core 9 is magnetized by the N pole of the stator permanent magnet patch 8, forming a closed magnetic circuit NS. The working surface of the stator winding core 9 is displayed as the S pole. At this time, the left S pole of the permanent magnet block 6 is repelled by the S pole of the stator winding core 9's magnetic field, while the right N pole of the permanent magnet block 6 is attracted by the S pole of the stator winding core 9. At this time, if... Figure 4 As shown in (b), when the stator winding core 9 switch (solid-state relay I) where the permanent magnet block 6 is located is closed and energized, the stator winding core 9 at this location is displayed as the N pole. At this time, the stator winding core 9 and the magnetic field of the permanent magnet block 6 do not generate any torque relationship. The left S pole of the permanent magnet block 6 is only subjected to the repulsive force of the S pole (not energized) of the stator winding core 9, and the right N pole is subjected to the attractive force of the S pole (not energized) of the fourth set of stator winding cores 9. When the permanent magnet block 6 reaches Figure 4 In position (c), the energizing switch (solid-state relay I) of the stator winding core 9 is disconnected, and the stator permanent magnet patch 8 quickly magnetizes the stator winding core 9 and forms a magnetic closed circuit. Simultaneously, at the instant solid-state relay I disconnects, solid-state relay II closes, absorbing the electrical energy generated by the self-inductance of the stator winding core 9 due to the de-energization. At this time, the left S pole of permanent magnet block 6 is repelled by the S pole of the de-energized stator winding core 9, and the right N pole of permanent magnet block 6 is attracted by the S pole (not energized) of the fourth set of stator winding cores 9, and so on.

[0039] The applicant verified through the prototype that the permanent magnet radial self-inductance generator motor provided by this utility model conforms to the above working principle, and proved that the magnetic field formed by the winding core and the permanent magnet patch of the same polarity without winding core both follow the working principle.

[0040] Based on the above working principle, referring to Figure 5 When the permanent magnet radial self-inductor generator motor of this invention is working, because the same polarity stator permanent magnet patch 8 is pasted on the surface of the unwound iron core 20, the patch magnetizes the unwound iron core 20, naturally forming a closed magnetic circuit. When the permanent magnet block 6 on the permanent magnet rotor 21 is attracted, the optical medium detection signal line of the circuit control board detects that the rotor power supply is in the conducting position. The circuit control board controls the solid-state relay I to conduct and the solid-state relay II to turn off. The stator winding iron core 9 generates the same polarity as the stator permanent magnet patch 8. At this time, the permanent magnet rotor 21 and the stator winding iron core 9 do not generate a torque relationship. The current flows from the positive terminal of the power supply through the solid-state relay I and the motor stator winding to the negative terminal of the power supply. The motor stator winding generates a magnetic field to drive the rotor to rotate. When the permanent magnet block 6 at this point on the permanent magnet rotor 21 rotates past the stator... After the working surface width of the winding core 9 is reached, the optical media detection signal line of the circuit control board detects that the rotor power supply is in the off position. The circuit control board controls the solid-state relay I to turn off and the solid-state relay II to turn on. At this time, the stator permanent magnet patch 8 magnetizes the stator winding core 9, generating the same polarity as the rotor permanent magnet block 6 at that location, repelling the rotation of the permanent magnet rotor 21. Simultaneously, at the instant that the solid-state relay I turns off, the stator winding core 9 generates a self-induced electromotive force, and the stator permanent magnet patch 8 also magnetizes the stator winding core 9 to generate an induced electromotive force. At the same time, the solid-state relay II turns on, and the self-induced current flows from the input terminal of the motor stator winding through the solid-state relay II, then through the rechargeable battery, and finally through the output terminal of the motor stator winding, forming a closed loop, guiding the electrical energy to the rechargeable battery or other electrical equipment. Therefore, the permanent magnet rotor 21 obtains torque, and the stator winding core 9 converts the magnetic field energy into electrical energy output, making effective use of permanent magnet energy and realizing energy recovery.

Claims

1. A permanent magnet radial self-inductor generator motor, characterized in that, Includes the body, at least one set of radial stators and permanent magnet rotors, power switch control system and power generation control switch; The machine body is in the shape of a horizontal cylinder, and the power switch control system and the power generation control switch are installed on the top of the machine body; The radial stator is in the shape of a horizontal cylinder and is precisely installed in the inner cavity of the machine body. The radial stator is provided with winding iron cores and unwinding iron cores at intervals. The surface of the unwinding iron core is provided with permanent magnet patches of the same polarity. The permanent magnet rotor is installed in the radial stator cavity and includes a rotor shaft. A permanent magnet rotor assembly is sleeved outside the rotor shaft. Several permanent magnet blocks are symmetrically arranged on the outer periphery of the permanent magnet rotor assembly. A non-magnetic protective disk for the permanent magnet blocks is provided at both ends of the permanent magnet blocks along the axis of the permanent magnet rotor assembly. The power generation control switch includes solid-state relay I and solid-state relay II; The power switch control system includes a circuit control board, a positive power supply terminal, and a negative power supply terminal. The circuit control board is electrically connected to the permanent magnet rotor detection position via an optical medium detection signal line. The positive power supply terminal is electrically connected to the input terminals of the circuit control board and solid-state relay I. The output terminal of the circuit control board is electrically connected to the input terminals of solid-state relay I and solid-state relay II, as well as the negative power supply terminal. The output terminal of solid-state relay I is electrically connected to solid-state relay II and the input terminal of the motor stator winding. The input terminal of solid-state relay II is electrically connected to the input terminal of the rechargeable battery. The output terminals of the motor stator winding and the rechargeable battery are electrically connected to the negative power supply terminal.

2. The permanent magnet radial self-inductor generator motor as described in claim 1, characterized in that, The gap between the radial stator inner cavity and the outer wall of the non-magnetic protective disk of the rotor permanent magnet block is 1mm.

3. A permanent magnet radial self-inductor generator motor as described in claim 2, characterized in that, The rotor shaft is inserted into the flange holes of the left and right flanges respectively, and the left and right flanges are fastened to the two ends of the machine body respectively.

4. A permanent magnet radial self-inductor generator motor as described in claim 3, characterized in that, The left flange is equipped with a left flange bearing, and the right flange is equipped with a right flange bearing. The two ends of the rotor shaft are respectively inserted into the bearing holes of the left flange bearing and the right flange bearing.

5. A permanent magnet radial self-inductor generator motor as described in claim 4, characterized in that, The left flange bearing is provided with a left bearing end cover on the outside, and the right flange bearing is provided with a right bearing end cover on the outside.

6. A permanent magnet radial self-inductor generator motor as described in claim 5, characterized in that, The left and right flanges are fastened to both ends of the machine body by fastening bolts.

7. A permanent magnet radial self-inductor generator motor as described in any one of claims 1-6, characterized in that, The radial stator's winding cores and unwinding cores are made in pairs of 2, 4, 6, 8...N, or pairs of 2, 3, 4, 5, 6, 7...N.

8. A permanent magnet radial self-inductor generator motor as described in claim 7, characterized in that, When the radial stator winding cores and unwinding cores are manufactured in equal pairs of 2, 4, 6, 8...N, the number of permanent magnet blocks is 2, 4, 6, 8...N; when the radial stator winding cores and unwinding cores are manufactured in equal pairs of 2, 3, 4, 5, 6, 7...N, the number of permanent magnet blocks is 2, 3, 4, 5, 6, 7...N.

9. A permanent magnet radial self-inductor generator motor as described in any one of claims 1-6, characterized in that, The working surface of the radial stator winding core is higher than the working surface of the unwound core. After the stator permanent magnet patch is attached, the working surface of the radial stator winding core is parallel to the working surface of the stator permanent magnet patch within the circumference.

10. A permanent magnet radial self-inductor generator motor as described in any one of claims 1-6, characterized in that, The permanent magnet blocks are installed vertically along the rotor shaft axis between two adjacent permanent magnet blocks and their non-magnetic protective disks. The magnetic field direction of each permanent magnet block is towards the rotor shaft.

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