Motor energy-saving stator assembly

Abstract

We provide energy-saving stator assemblies for motors. [Solution] The energy-saving stator assembly for the motor comprises a stator core and a stator winding unit. The stator winding unit consists of copper and aluminum windings. The copper winding has a relatively high rated power supply connected to the power source. The aluminum winding has a relatively low rated power supply connected to the power source via a switch. When the motor is started, the rated power supplies of the copper and aluminum windings combine to form the total power output of the motor. After the motor reaches a predetermined speed, the switch is turned off, and only the connection between the power source and the copper winding is maintained, so the motor operates using the rated power supply of the copper winding.

Description

【Technical Field】 【0001】 The present invention relates to a motor, and more particularly to an energy-saving stator assembly for a motor that can reduce the manufacturing cost of the motor and reduce the energy consumption during operation. 【Background Art】 【0002】 Reducing the manufacturing cost and at the same time increasing the energy efficiency of an operating motor are issues attracting attention in the industry. In contrast, Patent Document 1 discloses a design for dividing the coils of the stator windings of a three-phase motor into groups. Specifically, each stator winding is divided into two groups of coils. When the motor is started, the coils of the first group are connected to the power supply. After the motor rotates, the coils of the second group are connected to the power supply. With such a design, the starting current can be effectively reduced, and the risk of thermal overload can be minimized. However, Patent Document 1 cannot effectively reduce the manufacturing cost nor effectively increase the energy efficiency of the motor during continuous operation. 【0003】 The low-power consumption power generation device disclosed by Patent Document 2 is composed of a first motor and a second motor and maintains operation with a low current. When the low-power consumption power generation device rotates, it supplies power to the first motor to drive the flywheel. After the flywheel reaches a predetermined rotational speed, the low-power consumption power generation device supplies power to the second motor to maintain rotation. However, Patent Document 2 cannot reduce the manufacturing cost of the motor nor effectively improve the power consumption. 【0004】 The method for controlling the output of many motors presented in Patent Document 3 provides one or more motors having a stator winding with a first winding, a second winding, a third winding, and a fourth winding. The first winding consists of a main winding and a sub-winding. The main winding has a first rated power. The sub-winding has a second rated power. The second rated power is lower than the first rated power. In other words, the method presented in Patent Document 3 allows the motor to operate in modes corresponding to different output efficiency by designing the motor to have multiple windings, but it does not effectively reduce the manufacturing cost of the motor or effectively reduce energy consumption during operation. 【0005】 In summary, the pursuit of methods to reduce motor manufacturing costs while simultaneously lowering energy consumption during operation has not been a priority in the field of motor technology. However, in the current era where we must confront energy shortages, the fact that the energy consumption when starting up a motor is clearly higher than the energy consumption during operation is a problem. On the other hand, the significant increase in the price of copper wire used as the material for the motor's stator windings is also a problem. In other words, if we can simultaneously reduce the energy consumption and manufacturing costs of motors, we can achieve economic benefits. [Prior art documents] [Patent Documents] 【0006】 [Patent Document 1] U.S. Patent No. 4,417,192 [Patent Document 2] U.S. Patent No. 10,122,240 [Patent Document 3] U.S. Patent No. 11,936,258 [Overview of the Initiative] [Problems that the invention aims to solve] 【0007】 The primary objective of this invention is to provide an energy-saving stator assembly that can reduce the energy consumption of a motor in operation and simultaneously reduce manufacturing costs. 【0008】 Another objective of this invention is to provide a method for constructing an energy-saving stator assembly for a motor. [Means for solving the problem] 【0009】 To address the aforementioned challenges, the energy-saving stator assembly comprises a stator core and a stator winding unit. The stator winding unit is located within the stator core and, together with the rotor, contributes to kinetic energy. The stator winding unit has a first winding and a second winding. The first winding has a first rated power supply and a first conductor exhibiting a first conductivity. The second winding has a second rated power supply and a second conductor exhibiting a second conductivity. The second conductivity is lower than the first conductivity. The second rated power supply is the same as or lower than the first rated power supply. When the motor is started, the first and second windings are simultaneously connected to an external power supply, and the first and second rated power supplies combine to form the total output of the motor. After the motor reaches a predetermined speed, only the first winding is connected to the external power supply, and the first rated power supply maintains the motor's rotation. 【0010】 Stator winding units are applied to the main and auxiliary windings of single-phase motors, the main winding or auxiliary winding, the main winding and starter winding, the main winding or starter winding, or the stator windings of multi-phase motors. 【0011】 In one embodiment, the first conductor is made of copper, and the second conductor is made of aluminum. 【0012】 In one embodiment, the first rated output power supply of the first winding is the same as the rated output power supply of the motor. 【0013】 In one embodiment, the energy-saving stator assembly further includes a first switch. The first winding is electrically connected to an external power supply. The second winding is connected to the external power supply via the first switch. When the motor is started, the first switch conducts, and both the first and second windings are simultaneously connected to the external power supply, with the first rated output power supply and the second rated output power supply combined becoming the total output of the motor. When the motor reaches a predetermined speed, the first switch is turned off, and only the first winding is connected to the external power supply, allowing the motor to maintain rotation using the first rated output power supply. 【0014】 In one embodiment, the energy-saving stator assembly further comprises an electrical control unit for opening and closing a first switch. The electrical control unit has an input terminal and an output terminal. The input terminal is connected to an external power supply. The output terminal has a first branch wire and a second branch wire. The first branch wire is connected to the first winding. The second branch wire is connected to the second winding via the first switch. 【0015】 In one embodiment, the energy-saving stator assembly further comprises an inverter, a second switch, and a third switch. The inverter's input terminal is connected to the third switch, and its output terminal is connected to the first winding. The second switch is located between the first winding and the AC power supply. The third switch is located between the inverter and the external power supply. When the motor is started, the first and second switches conduct and the third switch is closed, so that the first and second windings are simultaneously connected to the external power supply, and the rated output power of the first and second windings becomes the total output of the motor. When the motor reaches a predetermined speed, the first and second switches are closed and the third switch conducts, and the external power supply is connected to the first winding via the inverter, so that the motor's rotation can be controlled by the inverter, improving efficiency and performance. 【0016】 To solve the aforementioned problems, a method for constructing an energy-saving stator assembly for a motor includes the steps of preparing a stator core and arranging a stator winding unit within the stator core and corresponding it to the rotor to constitute kinetic energy. The stator winding unit has a first winding and a second winding. The first winding has a first conductor exhibiting a first conductivity and a first rated power supply under predetermined conditions. The second winding has a second conductor exhibiting a second conductivity and a second rated power supply under predetermined conditions. The second conductivity is lower than the first conductivity. The second rated power supply is lower than or equal to the first rated power supply. When the motor is started, the first and second windings are simultaneously connected to an external power supply, and the first and second rated power supplies together become the total output of the motor. After the motor reaches a predetermined speed, only the first winding is connected to the external power supply, and the first rated power supply maintains the motor's rotation. 【0017】 In one embodiment, a method for constructing an energy-saving stator assembly for a motor further includes the steps of providing a first switch and electrically connecting the second winding to an external power supply via the first switch. When the motor is started, the first switch conducts, and the first and second windings are simultaneously connected to the external power supply, with the first rated power supply and the second rated power supply together forming the total output of the motor. When the motor reaches a predetermined speed, the first switch is turned off, and only the first winding is connected to the external power supply, allowing the motor to maintain rotation with the first rated power supply. 【0018】 In one embodiment, a method for constructing an energy-saving stator assembly for a motor further includes the steps of providing an inverter, a second switch, and a third switch; electrically connecting the first winding to an external power supply via the second switch; electrically connecting the first winding to the output terminal of the inverter; and electrically connecting the input terminal of the inverter to the external power supply via the third switch. When the motor is started, the first and second switches are conductive and the third switch is closed, so that the first and second windings are simultaneously connected to the external power supply, and the motor is operated by combining the rated output power of the first and second windings. When the motor reaches a predetermined speed, the first and second switches are closed and the third switch is conductive, so that the first winding is connected to the external power supply via the inverter, and the motor rotates under the control of the inverter. [Brief explanation of the drawing] 【0019】 [Figure 1] This is a perspective view showing a state in which an energy-saving stator assembly of a motor according to the first embodiment of the present invention is coupled with a well-known rotor. [Figure 2] This is a cross-sectional view along line 2-2 in Figure 1. [Figure 3] This is an enlarged view showing the portion labeled A in Figure 2, i.e., the first winding located in the first part of the slit and the second winding located in the second part of the slit. [Figure 4] This is an electrical circuit diagram showing the connection state between a Y-shaped stator winding unit and a first switch in an energy-saving stator assembly for a motor according to the first embodiment of the present invention. [Figure 5] This is an electrical circuit diagram showing the connection state between the triangular stator winding unit and the first switch in an energy-saving stator assembly for a motor according to the first embodiment of the present invention. [Figure 6] This is a schematic diagram showing the construction of an energy-saving stator assembly for a motor according to the first embodiment of the present invention, in which the stator winding unit, first switch, electrical control unit, and external power supply are electrically connected. [Figure 7] An enlarged view showing a state in which a first winding is disposed in a second portion of a slit and a second winding is disposed in a first portion of the slit in an energy-saving stator assembly of a motor according to a second embodiment of the present invention. [Figure 8] A schematic diagram showing an electrical connection of an energy-saving stator assembly of a motor according to a third embodiment of the present invention. [Figure 9] An electronic circuit diagram showing a state in which an energy-saving stator assembly of a motor according to a first embodiment of the present invention is mounted in a single-phase motor. [Figure 10] A schematic diagram showing an electrical connection in the energy-saving stator assembly of FIG. 9. [Figure 11] A schematic diagram showing a state in which components of an energy-saving stator assembly of a motor according to a second embodiment of the present invention are electrically connected to each other in a single-phase motor. 【Embodiments for Carrying out the Invention】 【0020】 Hereinafter, embodiments of the present invention will be described based on the drawings. 【0021】 (First Embodiment) As shown in FIGS. 1 to 6, a stator assembly 10 according to a first embodiment of the present invention is applied to a three-phase motor 100. The three-phase motor 100 has a rotor 12. The rotor 12 is disposed within the energy-saving stator assembly 10. 【0022】 As shown in Figures 2 to 6, the stator assembly 10 comprises a cylindrical stator core 20, a stator winding unit 30, an electrical control unit 42, and a three-phase first switch 44. In this embodiment, the stator core 20 is composed of a plurality of overlapping annular silicon steel plates and has a first shaft end 21, a second shaft end 22, an outer circumferential surface 23, an inner circumferential surface 24, a through hole 25, and a plurality of slits 26. The plurality of slits 26 penetrate the cylindrical stator core 20 along the axial direction and are arranged side by side along the circumferential direction. The rotor 12 is housed in the through hole 25. As shown in Figure 3, each slit 26 has a closed bottom 260 close to the outer circumferential surface 23 of the stator core 20 and an opening 262 close to the inner circumferential surface 24 of the stator core 20. Each slit 26 is divided into a first part 264 and a second part 266 by a virtual dividing line 268. The first part 264 is close to the closed bottom 260. The second part 266 is close to the opening 262. 【0023】 As shown in Figures 2 and 3, the stator winding unit 30 is arranged within a plurality of slits 26 of the stator core 20 and has a first winding 32 and a second winding 34. The first winding 32 is distributed within the first portion 264 of the slit 26 and has a first conductor exhibiting a first conductivity and a first rated power supply. The second winding 34 is distributed within the second portion 266 of the slit 26 and has a second conductor exhibiting a second conductivity and a second rated power supply. The second conductivity is lower than the first conductivity. The second rated power supply is lower than or equal to the first rated power supply. In another embodiment, the first conductor is made of copper material. The second conductor is made of aluminum material. For a motor with a rated power supply of 3 HP, the first winding 32 and the second winding 34 have a rated power supply of 3 HP. 【0024】 As shown in Figures 4 and 5, the first winding 32 consists of an R-phase first winding 320 connected to the first end 3200, an S-phase first winding 322 connected to the second end 3220, and a T-phase first winding 324 connected to the third end 3240. The R-phase first winding 320, S-phase first winding 322, and T-phase first winding 324 are interconnected to form a Y-shape (see Figure 4) or a triangle (see Figure 5). The second winding 34 consists of an R-phase second winding 340 connected to the first end 3400, an S-phase second winding 342 connected to the second end 3420, and a T-phase second winding 344 connected to the third end 3440. The R-phase second winding 340, S-phase second winding 342, and T-phase second winding 344 are interconnected to form a Y-shape (see Figure 4) or a triangle (see Figure 5). The three-phase first switch 44 consists of the R-phase first switch 440, the S-phase first switch 442, and the T-phase first switch 444. 【0025】 As shown in Figure 6, the electrical control unit 42 may employ a PC controller, such as a programmable logic circuit control device (PLC). When making electrical connections, the first end 3200, second end 3220, and third end 3240 of the first winding 32 are connected to the electrical control unit 42 via branch wires A, B, and C. The electrical control unit 42 is connected to the R-phase output terminal, S-phase output terminal, and T-phase output terminal of the three-phase alternating current (AC) power supply 50. The first end 3400 of the second winding 34 is connected to the R-phase first switch 440, the second end 3420 to the S-phase first switch 442, and the third end 3440 to the T-phase first switch 444. The R-phase first switch 440, S-phase first switch 442, and T-phase first switch 444 are connected to the electrical control unit 42 via branch wires D, E, and F. 【0026】 When the motor 100 is started under a predetermined load, the electrical control unit 42 turns on the R-phase first switch 440, the S-phase first switch 442, and the T-phase first switch 444. In response, the first winding 32 and the second winding 34 are simultaneously connected to the three-phase AC power supply 50, and the motor 100 is operated by integrating their respective rated output power supplies. After the motor 100 reaches a predetermined speed, the electrical control unit 42 disconnects the connection between the three-phase AC power supply 50 and the second winding 34 by turning off the R-phase first switch 440, the S-phase first switch 442, and the T-phase first switch 444, while maintaining the connection between the three-phase AC power supply 50 and the first winding 32. At this time, the motor 100 maintains its rotation using the rated output power supply of the first winding 32. 【0027】 (Second Embodiment) As shown in Figure 7, the difference between the second embodiment and the first embodiment of the present invention is that the positions of the first winding 32 and the second winding 34 within the slit 26 are swapped. More specifically, in the second embodiment, the first winding 32 is distributed within the second portion 266 of the slit 26, and the second winding 34 is distributed within the first portion 264 of the slit 26. 【0028】 (Third embodiment) As shown in Figure 8, the energy-saving stator assembly 10' according to the third embodiment of the present invention is applicable to designs where the motor's operating state needs to be adjusted by an inverter. This design uses a low-power inverter only during normal motor operation, i.e., avoids the use of a high-power inverter during motor startup and normal operation, thereby reducing manufacturing costs and saving energy. 【0029】 The difference between stator assembly 10' and stator assembly 10 is as follows: Stator assembly 10' further includes an inverter 60, a three-phase second switch 46, and a three-phase third switch 48. The three-phase second switch 46 consists of an R-phase second switch 460, an S-phase second switch 462, and a T-phase second switch 464. The three-phase third switch 48 consists of an R-phase third switch 480, an S-phase third switch 482, and a T-phase third switch 484. The first winding 32 has its first end 3200 connected to the R-phase second switch 460, its second end 3220 connected to the S-phase second switch 462, and its third end 3240 connected to the T-phase second switch 464. The inverter 60 has an input terminal 62 and an output terminal 64. The input terminal 62 is connected to the three-phase third switch 48. The output terminal 64 is connected separately to the first end 3200, the second end 3220, and the third end 3240 of the first winding 32. The R-phase third switch 480, S-phase third switch 482, and T-phase third switch 484 of the three-phase third switch 48 are connected to the electrical control unit 42 via branch wires G, H, and I. 【0030】 When the motor is started, the electrical control unit 42 opens the three-phase first switch 44 and the three-phase second switch 46, and closes the three-phase third switch 48. Meanwhile, the first winding 32 and the second winding 34 are separately connected to the three-phase AC power supply 50, and the motor is operated by integrating their respective rated output power supplies. After the motor reaches a predetermined speed, the electrical control unit 42 closes the three-phase first switch 44 and the three-phase second switch 46, and opens the three-phase third switch 48. Meanwhile, the three-phase AC power supply 50 is connected to the first winding 32 via the inverter 60, so the motor rotates under the control of the inverter 60. 【0031】 Figure 9 is an electronic circuit diagram of a single-phase motor 200. The single-phase motor 200 comprises a stator assembly 202 and a rotor 203. Figure 10 is a schematic diagram showing the electrical connections within the stator assembly 202 of Figure 9. 【0032】 The stator assembly 202 comprises a stator winding unit 204, a single-phase electrical control unit 206, and a single-phase first switch 208. The stator winding unit 204 consists of a main winding 210 and an auxiliary winding 212. The main winding 210 has a single-phase first winding 214 and a single-phase second winding 216. The single-phase first winding 214 has a first conductor exhibiting a first conductivity and a first rated output power supply under predetermined conditions. The single-phase second winding 216 has a second conductor exhibiting a second conductivity and a second rated output power supply under predetermined conditions. The first rated output power supply is higher than or equal to the second rated output power supply. The first conductivity is higher than the second conductivity. The auxiliary winding 212 is connected to the single-phase electrical control unit 206 via a centrifugal switch 213. The single-phase first winding 214 has a first end 2140 connected to the single-phase electrical control unit 206. The single-phase second winding 216 has a second end 2160 that is connected to the single-phase electrical control unit 206 via the single-phase first switch 208. The single-phase electrical control unit 206 is connected to the single-phase power supply 300. 【0033】 When the single-phase motor 200 is started under a predetermined load, the single-phase electrical control unit 206 turns on the single-phase first switch 208. In response, the single-phase first winding 214 and the single-phase second winding 216 are simultaneously connected to the single-phase power supply 300, and the single-phase motor 200 is operated by integrating their respective rated output power supplies. After the single-phase motor 200 reaches a predetermined speed, the single-phase electrical control unit 206 turns off the single-phase first switch 208, and in order to maintain the connection between the single-phase power supply 300 and the single-phase first winding 214, the single-phase motor 200 maintains rotation with the first rated output power supply. 【0034】 Figure 11 is a schematic diagram showing the electrical connections within the stator assembly 202' of a single-phase motor 200 according to another embodiment. 【0035】 The difference between stator assembly 202' and stator assembly 202 is as follows: Stator assembly 202' further includes an inverter 218, a single-phase second switch 220, and a single-phase third switch 222. The inverter 218 has an output terminal 2180 and an input terminal 2182. The output terminal 2180 is connected to the first terminal 2140 of the single-phase first winding 214. The input terminal 2182 is connected to the single-phase electrical control unit 206 via the single-phase third switch 222. The first terminal 2140 of the single-phase first winding 214 is connected to the single-phase electrical control unit 206 via the single-phase second switch 220. 【0036】 When the single-phase motor 200 is started under a predetermined load, the single-phase first switch 208 and the single-phase second switch 220 are controlled by the single-phase electrical control unit 206 and maintain a conductive state. Meanwhile, the single-phase first winding 214 and the single-phase second winding 216 are simultaneously connected to the single-phase power supply 300, and the single-phase motor 200 is operated by integrating their respective rated output power supplies. After the single-phase motor 200 reaches a predetermined speed, the single-phase electrical control unit 206 shuts off the single-phase first switch 208 and the single-phase second switch 220 and opens the single-phase third switch 222. Meanwhile, since the single-phase power supply 300 is connected to the single-phase first winding 214 via the inverter 218, the single-phase motor 200 maintains its rotation under the control of the inverter 218. 【0037】 To summarize the above, the features of the motor stator assembly according to the present invention are as follows: 1. Energy savings can be achieved during steady-state operation. More specifically, significant energy savings are achieved by overcoming load inertia with high output during startup, and then reducing output as the load decreases after reaching steady-state operation. 2. Overload can be prevented. More specifically, motor overload can be effectively prevented by supplying sufficient power at startup and ensuring appropriate torque. 3. Long-term operating costs can be reduced. More specifically, by maintaining a low-power mode for extended periods, energy consumption can be minimized, thereby reducing overall operating costs. 4. The service life can be extended. More specifically, by reducing the power output during normal operation, internal losses can be minimized, the temperature during operation can be lowered, and the motor's lifespan can be extended. 5. Effectively employ cost-effective windings. More specifically, by using highly efficient copper wire for the main winding (or single-phase first winding) that operates continuously, and cost-effective aluminum wire for the secondary winding (or single-phase second winding) that generates only starting torque, manufacturing costs can be effectively reduced. 6. Use low-power inverters. More specifically, by using low-power inverters during normal operation instead of relying on high-power inverters during system startup, manufacturing costs and energy consumption can be reduced. [Explanation of symbols] 【0038】 10, 10': Stator assembly 12: Rotor 20: Stator core 21: First shaft end 22: Second shaft end 23: Outer surface 24: Inner surface 25: Through hole 26: Slit 30: Stator winding unit 32: First winding 34: Second winding 42: Electrical control unit 44: Three-phase first switch 46: Three-phase second switch 48: Three-phase third switch 50: Three-phase AC power supply 60: Inverter 62: Input terminal 64: Output terminal 100: Motor 200: Single-phase motor 202, 202': Stator Assembly 203: Rotor 204: Stator winding unit 206: Single-phase electrical control unit 208: Single-phase first switch 210: Main winding 212: Auxiliary winding 213: Centrifugal switch 214: Single-phase first winding 216: Single-phase second winding 218: Inverter 220: Single-phase second switch 222: Single-phase third switch 260: closed bottom 262: Opening 264:First part 266:Second part 268: Virtual dividing line 300: Single-phase power supply 320: R-phase first winding 322: S-phase first winding 324: T-phase first winding 340: R-phase second winding 342: S-phase second winding 344:T phase second winding 440: R-phase first switch 442: S-phase first switch 444: T-phase first switch 460: R-phase second switch 462: S-phase second switch 464: T-phase second switch 480: R-phase third switch 482: S-phase third switch 484: T-phase third switch 2140: First end 2160:Second end 2180: Output terminal 2182: Input terminal 3200, 3400: First end 3220, 3420: Second end 3240, 3440: Third end A, B, C, D, E, F, G, H, I: Branch line

Claims

[Claim 1] An energy-saving stator assembly for a motor comprising a stator core and a stator winding unit, The stator winding unit is arranged within the stator core and, in conjunction with the motor rotor, generates kinetic energy. The stator winding unit has a first winding and a second winding, the first winding having a first conductor exhibiting a first conductivity and a first rated output power supply under predetermined conditions, and the second winding having a second conductor exhibiting a second conductivity and a second rated output power supply under predetermined conditions. The first rated output power supply is higher than or equal to the second rated output power supply, and the first conductivity is higher than the second conductivity. When the motor is started, the first winding and the second winding are simultaneously connected to an external power supply, and the first rated output power supply and the second rated output power supply combine to become the total output of the motor. An energy-saving stator assembly for a motor, characterized in that after the motor reaches a predetermined speed, only the first winding is connected to the external power supply, and the motor is kept rotating by the first rated output power supply. [Claim 2] The energy-saving stator assembly for a motor according to claim 1, characterized in that the first conductor is made of copper and the second conductor is made of aluminum. [Claim 3] The energy-saving stator assembly for a motor according to claim 1, characterized in that the first rated output power supply is the same as the rated output power supply of the motor. [Claim 4] Furthermore, it is equipped with a first switch, The second winding is electrically connected to the external power supply via the first switch. When the motor is started, the first switch is activated, and the first winding and the second winding are simultaneously connected to the external power supply, and the first rated output power supply and the second rated output power supply combine to become the total output of the motor. The energy-saving stator assembly for a motor according to claim 1, characterized in that when the motor reaches a predetermined speed and the first switch is turned off, only the first winding is connected to the external power supply, and the motor is kept rotating by the first rated output power supply. [Claim 5] Furthermore, it is equipped with an electrical control unit, The energy-saving stator assembly for a motor according to claim 4, characterized in that the electrical control unit has an input terminal and an output terminal, the input terminal is connected to the external power supply, the output terminal has a first branch wire and a second branch wire, the first branch wire is connected to the first winding, and the second branch wire is connected to the second winding via the first switch. [Claim 6] Furthermore, it is equipped with an inverter, a second switch, and a third switch. The inverter has an input terminal and an output terminal, the input terminal is connected to the third switch, and the output terminal is connected to the first winding. The second switch is connected between the inverter and the electrical control unit. The third switch is connected between the first winding and the electrical control unit. When the motor is started, the electrical control unit opens the first switch and the third switch and disconnects the second switch, thereby simultaneously connecting the first winding and the second winding to the external power supply. As a result, the rated power supplies of the first winding and the second winding combine to form the total output of the motor. The energy-saving stator assembly for a motor according to claim 5, characterized in that when the motor reaches a predetermined speed, the electrical control unit disconnects the first switch and the third switch, opens the second switch, and connects the external power supply to the first winding via the inverter, so that the motor rotates under the control of the inverter. [Claim 7] An energy-saving stator assembly for a motor comprising a stator core and a stator winding unit, The stator winding unit is arranged within the stator core and, in conjunction with the motor rotor, generates kinetic energy. The stator winding unit has a first winding and a second winding, the first winding having a first conductor exhibiting a first conductivity and a first rated output power supply under predetermined conditions, and the second winding having a second conductor exhibiting a second conductivity and a second rated output power supply under predetermined conditions. The first rated output power supply is higher than or equal to the second rated output power supply, and the first conductivity is higher than the second conductivity. The first winding consists of an R-phase first winding, an S-phase first winding, and a T-phase first winding, the R-phase first winding having a first end connected to the R-phase terminal of the three-phase AC power supply, the S-phase first winding having a second end connected to the S-phase terminal of the three-phase AC power supply, and the T-phase first winding having a third end connected to the T-phase terminal of the three-phase AC power supply, and the R-phase first winding, the S-phase first winding, and the T-phase first winding are interconnected to form a Y-shape or a triangle. The second winding consists of an R-phase second winding, an S-phase second winding, and a T-phase second winding, the R-phase second winding having a first end connected to the R-phase terminal of the three-phase AC power supply, the S-phase second winding having a second end connected to the S-phase terminal of the three-phase AC power supply, and the T-phase second winding having a third end connected to the T-phase terminal of the three-phase AC power supply. The R-phase second winding, the S-phase second winding, and the T-phase second winding are interconnected to form a Y-shape or a triangle. When the motor is started, the three-phase AC power supply simultaneously connects the first winding and the second winding, and integrates the output power of the first winding and the second winding to supply power to the motor. An energy-saving stator assembly for a motor, characterized in that when the motor reaches a predetermined speed, the three-phase AC power supply supplies power only to the first winding, and the motor maintains its rotation using the first rated output power supply. [Claim 8] The energy-saving stator assembly for a motor according to claim 7, characterized in that the first conductor is made of copper and the second conductor is made of aluminum. [Claim 9] The energy-saving stator assembly for a motor according to claim 7, characterized in that the first rated output power supply is the same as the rated output power supply of the motor. [Claim 10] The energy-saving stator assembly for a motor according to claim 7, characterized in that the stator core is a cylindrical body having a plurality of slits, the plurality of slits penetrate the cylindrical body along the axial direction and are arranged in a line along the circumferential direction. [Claim 11] The energy-saving stator assembly for a motor according to claim 10, characterized in that the first winding and the second winding are arranged in the same slit of the stator core. [Claim 12] Each of the slits has a closed bottom portion near the outer circumferential surface of the stator core and an opening portion near the inner circumferential surface of the stator core, and each of the slits is further divided into a first portion near the closed bottom portion and a second portion near the opening portion. The energy-saving stator assembly for a motor according to claim 10, characterized in that the first winding is distributed to the first portion and the second winding is distributed to the second portion, or the first winding is distributed to the second portion and the second winding is distributed to the first portion. [Claim 13] Furthermore, it is equipped with a three-phase first switch, The aforementioned three-phase first switch consists of an R-phase first switch, an S-phase first switch, and a T-phase first switch. The R-phase second winding is electrically connected to the three-phase AC power supply via the R-phase first switch, the S-phase second winding is electrically connected to the three-phase AC power supply via the S-phase first switch, and the T-phase second winding is electrically connected to the three-phase AC power supply via the T-phase first switch. When the motor is started, the three-phase first switch becomes conductive, so the three-phase AC power supply is simultaneously connected to the first winding and the second winding, and the rated output power of the first winding and the second winding are integrated and supplied to the motor. The energy-saving stator assembly for a motor according to claim 7, characterized in that when the motor reaches a predetermined speed and the three-phase first switch is shut off, the three-phase AC power supply supplies power only to the first winding, and the motor maintains rotation using the first rated output power supply. [Claim 14] Furthermore, it is equipped with an electrical control unit, The energy-saving stator assembly for a motor according to claim 13, characterized in that the electrical control unit has an input terminal and an output terminal, the input terminal is connected to the three-phase AC power supply, the output terminal has a plurality of first branch wires and a plurality of second branch wires, the plurality of first branch wires are separately connected to the R-phase first winding, the S-phase first winding and the T-phase first winding, and the plurality of second branch wires are separately connected to the R-phase second winding, the S-phase second winding and the T-phase second winding via the three-phase first switch. [Claim 15] Furthermore, it is equipped with an inverter, a three-phase second switch, and a three-phase third switch. The inverter has an input terminal and an output terminal, the input terminal being connected to the input terminal of the three-phase third switch, and the output terminal being connected to the output terminal of each of the first windings. The aforementioned three-phase second switch is connected between the first winding and the AC power supply. The three-phase third switch is connected between the inverter and the AC power supply. When the motor is started, the electrical control unit opens the three-phase first switch and the three-phase second switch and disconnects the three-phase third switch, thereby simultaneously connecting the first winding and the second winding to the AC power supply. As a result, the rated output power of the first winding and the second winding combine to become the total output of the motor. The energy-saving stator assembly for a motor according to claim 14, characterized in that when the motor reaches a predetermined speed, the electrical control unit shuts off the three-phase first switch and the three-phase second switch, opens the three-phase third switch, and connects the AC power supply to the first winding via the inverter, so that the motor rotates under the control of the inverter. [Claim 16] The process includes the steps of preparing a stator core and arranging a stator winding unit within the stator core and corresponding it to a rotor to generate kinetic energy. The stator winding unit has a first winding and a second winding, the first winding having a first conductor exhibiting a first conductivity and a first rated output power supply under predetermined conditions, and the second winding having a second conductor exhibiting a second conductivity and a second rated output power supply under predetermined conditions. The second conductivity is lower than the first conductivity, and the second rated output power supply is lower than or equal to the first rated output power supply. When the motor is started, the first winding and the second winding are simultaneously connected to an external power supply, and the first rated output power supply and the second rated output power supply combine to form the total output of the motor. A method for constructing an energy-saving stator assembly for a motor, characterized in that after the motor reaches a predetermined speed, only the first winding is connected to an AC power supply, and the motor is kept rotating by the first rated output power supply. [Claim 17] The further steps include providing a first switch and electrically connecting the second winding and the external power supply via the first switch. When the motor is started, the first switch becomes conductive, so the first winding and the second winding are simultaneously connected to the external power supply, and the first rated output power supply and the second rated output power supply together become the total output of the motor. A method for constructing an energy-saving stator assembly for a motor according to 16, characterized in that when the motor reaches a predetermined speed and the first switch is turned off, only the first winding is connected to the external power supply, and the motor is kept rotating by the first rated output power supply. [Claim 18] The further steps include: preparing an inverter; preparing a second switch; preparing a third switch; electrically connecting the first winding and the external power supply via the second switch; electrically connecting the first winding and the output terminal of the inverter; and electrically connecting the input terminal of the inverter and the external power supply via the third switch. When the motor is started, the first switch and the second switch are conductive and the third switch is disconnected, so the first winding and the second winding are connected separately to an external power supply, and the motor is operated by combining the rated output power supplies of the first winding and the second winding. A method for constructing an energy-saving stator assembly for a motor according to 17, characterized in that when the motor reaches a predetermined speed, the first switch and the second switch are shut off, and when the third switch is opened, the first winding is connected to the external power supply via the inverter, so that the motor rotates under the control of the inverter. [Claim 19] A method for constructing an energy-saving stator assembly for a motor according to claim 16, characterized in that the first rated output power supply of the first winding is the same as the rated output power supply of the motor. [Claim 20] A method for constructing an energy-saving stator assembly for a motor according to claim 16, characterized in that the first conductor is made of copper and the second conductor is made of aluminum.

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