TW202123599A - Brushless direct current motor with movable stator - Google Patents

Abstract

This invention relates to a novel brushless DC motor electromechanical device that can continuously increase the torque of the motor and continuously decrease the torque of the motor with a fixed current. A movable stator device can be installed inside a brushless DC motor, and a continuous drive device is installed outside the DC motor, together forming a "brushless DC motor with movable stator." The brushless DC motor with movable stator is provided with an N-pole permanent magnet, a S-pole permanent magnet, and a rotating shaft. The movable stator device is provided with a three-pole primary coil group and a three-pole secondary coil group. The continuous drive device is provided with an electric actuator or the like. The brushless DC motor with movable stator can use a fixed DC power supply (fixed current) to supply power through the three-pole primary coil group and a three-pole secondary coil group, and drives the N-pole permanent magnet and the S-pole permanent magnet to rotate and uses the rotating shaft to drive a load to work, by means of electromagnetic interaction among the three-pole primary coil group and the N-pole permanent magnet and the S-pole permanent magnet. The brushless DC motor with movable stator can also use the continuous stator magnetic field change mechanism (forming a continuously driven movable stator) constituted by the three-pole secondary coil group, the electric actuator, and a switching circuit to continuously increase the intensity of the electromagnetic interaction among the three-pole primary coil group, the three-pole secondary coil group, and the N-pole permanent magnet and the S-pole permanent magnet, thereby continuously increasing the rotation torque of the rotating shaft for the motor's continuous increase of the torque rotation (continuously increasing the torque rotation with fixed current), or continuously decreases the intensity of the electromagnetic interaction among the three-pole primary coil group, the three-pole secondary coil group and the N-pole permanent magnet and the S-pole permanent magnet, thereby continuously decreasing the rotating torque of the rotation shaft for the motor's continuous decrease of the torque rotation (continuous decreasing the torque rotation with fixed current), and does not affect the current flow of the fixed DC power supply.

Description

Removable stator brushless DC motor

The creation of this invention relates to an electromechanical device of a "movable stator brushless DC motor", in particular to a brushless DC motor that uses a movable stator device and a continuous drive device to drive the movable stator device and the The continuous drive device can be used as a motor to continuously increase the torque and the motor to continuously reduce the torque, and use a fixed DC power supply to supply the brushless DC motor with a movable structure motor electromechanical device.

According to this, in the current era of unstable oil supply sources and fluctuating oil prices, the cost of using oil-related energy may increase. At the same time, for the sake of global environmental considerations, to avoid drastic changes in the environment caused by excessive emissions of carbon dioxide from the use of oil, all parties advocate Relevant practices for energy saving and carbon reduction, such as the development and use of electric vehicles. Among them, the innovative and safe use of battery power for electric vehicle motors (such as brushless DC motors) to improve the long-term use of batteries is also a specific approach to energy saving and carbon reduction.

The brushless DC motor of conventional electric vehicles uses power supply to drive the load. Please refer to Figure 1. A brushless DC motor 01 is connected to a load 02. The brushless DC motor 01 has a permanent N pole inside. Magnet 011, one S pole permanent magnet 012 and one Coil group 013, a coil group 014, and a Hall induction device. The brushless DC motor 01 uses a variable DC power supply to supply power to the coil group 013 and the coil group 014 to drive the N-pole permanent magnet 011, The S-pole permanent magnet 012 rotates, drives the load 02 and works as a motor to increase or decrease torque, so that the electric vehicle can drive with an increase or decrease torque. When the electric vehicle is running with increasing or decreasing torque, the variable DC power supply provides power for a variable current, so that the battery of the electric vehicle must also provide variable current for the brushless DC motor 01 to use.

However, when the electric vehicle is driving with increased torque, the battery discharge current increases and the discharge voltage drops quickly. When the electric vehicle is driving with reduced torque, the battery discharge current decreases, and the discharge voltage drops slowly, and the battery voltage often decreases. The fluctuating nature of the battery makes the electrochemical reaction inside the battery unstable, which may cause damage to the battery’s performance; in addition, when the electric vehicle is running at high torque, the battery discharge current may be too large, and the discharge current may be too large for a long time or continuously. It will cause the battery to overheat frequently and cause permanent structural damage to the battery. Therefore, innovative brushless DC motors for electric vehicles safely use batteries to increase or decrease torque, which has become one of the research directions of motor manufacturers.

In view of the battery shortcomings (variable current) of the brushless DC motor for electric vehicles derived from the above-mentioned prior art, the inventor of this case was eager to improve and innovate, and after many days of painstaking research, he finally successfully developed one of the cases. Removable stator brushless DC motor" electromechanical device.

The purpose of the creation of this invention is to provide a brushless DC motor electromechanical device for electric vehicles that can continuously increase the torque of the motor and continuously reduce the torque of the motor with a fixed current. The concept is that a brushless DC motor can be installed inside a brushless DC motor. Move the stator device, and in the The brushless DC motor is equipped with a continuous drive device outside, so that the movable stator device and the continuous drive device can be used as a motor to continuously increase the torque and the motor to continuously reduce the torque, and use a fixed DC power supply (fixed current) to supply power to the brushless DC Motor, and achieve the electric characteristics and purpose of the brushless DC motor which can continuously increase or decrease the torque drive with a fixed current.

In order to achieve the above-mentioned purpose, the technical means of this invention is to provide a motor movable stator device inside a brushless DC motor, and a continuous motor drive device outside the brushless DC motor to form a "removable motor". "Moving stator brushless DC motor" is a constant current DC motor (Constant Current DC Motor). The movable stator brushless DC motor is provided with a motor movable stator device composed of a three-pole main coil group and a three-pole sub-coil group and an N-pole permanent magnet and an S-pole inside the brushless DC motor. The permanent magnet rotor of the motor composed of permanent magnets, the three-pole main coil group of the movable stator device of the motor is directly electrically connected with a fixed DC power supply (fixed current) outside the movable stator brushless DC motor, the three-pole secondary coil The group is indirectly electrically connected to the external fixed DC power supply via a switching circuit, and the motor permanent magnet rotor is mechanically connected to a load outside the brushless DC motor through a rotating shaft. The motor continuous driving device is provided with an electric actuator, a driving circuit and a plurality of connecting rods, wherein the three-pole sub-coil group of the motor movable stator device is mechanically connected with the plurality of connecting rods, and the plurality of connecting rods The connecting rod is mechanically connected with the electric actuator, the electric actuator is electrically connected with the drive circuit, and the drive circuit is electrically connected with the fixed DC power supply outside the brushless DC motor.

The movable stator brushless DC motor uses the external fixed DC power supply (fixed current) to supply power to the motor movable stator device having a three-pole main coil group and a three-pole sub-coil group. Permanent magnet of the motor of N pole permanent magnet and S pole permanent magnet The electromagnetic action between the rotors can drive the N-pole permanent magnet and the S-pole permanent magnet to rotate and use the rotating shaft to drive the load to work (fixed current power supply, normal motor torque rotation). The movable stator brushless DC motor can also use the three-pole sub-coil assembly, the continuous driving device of the motor with a driving circuit, an electric actuator, a plurality of connecting rods, and the continuous change mechanism of the stator magnetic field by the switching circuit ( Form a continuously driven movable stator), so that the strength of electromagnetic interaction between the three-pole main coil group, the three-pole sub-coil group and the permanent magnet rotor of the motor with N-pole permanent magnets and S-pole permanent magnets can be continuously increased, and then Continuously increase the rotation torque of the rotating shaft for the motor to continuously increase the torque rotation work without affecting the current flow of the fixed DC power supply (fixed current power supply, the motor continuously increases the torque rotation), or to continuously reduce the three The intensity of electromagnetic interaction between the pole main coil assembly, the three-pole secondary coil assembly and the permanent magnet rotor of the motor with N-pole permanent magnets and S-pole permanent magnets, thereby continuously reducing the rotation torque of the rotating shaft to make the motor continuously reduce rotation Torque rotation work, and does not affect the current flow of the fixed DC power supply (fixed current power supply, the motor continuously reduces torque rotation).

In this way, in the creation of this invention, a "movable stator brushless DC motor" composed of a brushless DC motor, a movable stator device, and a continuous drive device, makes the movable stator device and the continuous drive device constitute The stator magnetic field continuous change mechanism can be used for the motor to continuously increase the torque, and the motor to continuously reduce the torque, and supply the brushless DC motor with a fixed DC power supply (fixed current), using this new type of continuous driving of the movable stator and the fixed DC power supply. The concept will achieve the electric characteristics and purpose of the brushless DC motor which can continuously increase or decrease the torque drive with a fixed current.

Please refer to the detailed description and drawings of a preferred embodiment of the electromechanical device of the “Removable Stator Brushless DC Motor” created by this invention below, and you will learn more about the present invention. The technical content of the creation and its purpose and effect:

11‧‧‧Removable stator brushless DC motor

1101‧‧‧N pole permanent magnet

1102‧‧‧S pole permanent magnet

1103‧‧‧Rotating shaft

11041‧‧‧Three-pole main coil group

11051‧‧‧Three-pole main coil group

11061‧‧‧Three-pole sub-coil group

11071‧‧‧Three-pole sub-coil group

11042‧‧‧forward three-pole main coil group

11052‧‧‧forward three-pole main coil group

11062‧‧‧Sequential three-pole sub-coil group

11072‧‧‧Sequential three-pole sub-coil group

11063‧‧‧Reverse three-pole sub-coil group

11073‧‧‧Reverse three-pole sub-coil group

1108‧‧‧First Link

1109‧‧‧Second Link

12‧‧‧Load

13‧‧‧Switching circuit

14‧‧‧Electric actuator

15‧‧‧Drive circuit

Figure 1 shows the structure of a conventional electric vehicle brushless DC motor.

Figure 2 is a diagram of the structure relationship between the movable stator device, the electric actuator, the driving circuit, and the switching circuit in a preferred embodiment of the "movable stator brushless DC motor" created by the present invention.

Figure 3 is a preferred embodiment of the invention created "Removable Stator Brushless DC Motor". The position of the movable stator device and the current flow diagram of the switching circuit during the continuous torque rotation of the motor.

Figure 4 is a preferred embodiment of the invention’s creation of the "Removable Stator Brushless DC Motor". The position of the movable stator device and the current flow diagram of the switching circuit during the continuous rotation of the motor with reduced torque.

This invention creation provides a "movable stator brushless DC motor" electromechanical device. Please refer to Figure 2. The movable stator brushless DC motor 11 is provided with an N-pole permanent magnet 1101, an S A motor permanent magnet rotor composed of pole permanent magnets 1102. The motor permanent magnet rotor is mechanically connected to a load 12 outside the movable stator brushless DC motor 11 through a rotating shaft 1103; inside the movable stator brushless DC motor 11 There is also a motor movable stator device composed of a three-pole main coil group 11041, a three-pole main coil group 11051, a three-pole sub-coil group 11061, and a three-pole sub-coil group 11071. The motor can move the stator device. The three-pole main coil group 11041 and the three-pole main coil group 11051 are directly connected to a fixed DC power source outside the movable stator brushless DC motor 11 (for example: a battery after inverter Provide a fixed current power supply) electrical connection, and the three-pole sub-coil group 11061 and the three-pole sub-coil group 11071 are indirectly electrically connected to the external fixed DC power supply via a switching circuit 13; the movable stator brushless DC motor 11 There is also a continuous motor drive device composed of an electric actuator 14, a drive circuit 15, a first link 1108, and a second link 1109. The motor can move the three of the stator devices. The polar sub-coil group 11061 is mechanically connected with the first connecting rod 1108, the three-pole sub-coil group 11071 is mechanically connected with the second connecting rod 1109, the first connecting rod 1108, the second connecting rod 1109 and the electric actuator The electric actuator 14 is mechanically connected, and the electric actuator 14 is electrically connected to the driving circuit 15, and the driving circuit 15 is electrically connected to the fixed DC power source outside the movable stator brushless DC motor 11. The three-pole sub-coil group 11061, the three-pole sub-coil group 11071, the first connecting rod 1108, the second connecting rod 1109, the electric actuator 14, the driving circuit 15 and the switching circuit 13 form a stator The magnetic field continuously changes mechanism to form a motor movable stator device that can be driven continuously.

Please refer to Figures 2 and 3, the movable stator brushless DC motor 11 uses the external fixed DC power supply (fixed current) to directly supply power to the three-pole main motor of the movable stator device in the forward direction. The coil set 11041 and the three-pole main coil set 11051 form a forward three-pole main coil set 11042 and a forward three-pole main coil set 11052. Through the forward three-pole main coil set 11042, the forward three-pole main coil set 11042, The electromagnetic action between the pole main coil assembly 11052 and the N pole permanent magnet 1101 and the S pole permanent magnet 1102 can drive the motor permanent magnet rotor with the N pole permanent magnet 1101 and the S pole permanent magnet 1102 to rotate and utilize The rotating shaft 1103 drives the load 12 to work (fixed current power supply, normal torque rotation of the motor). The movable stator brushless DC motor 11 can also use the switching circuit 13 to enable the external fixed DC power supply (fixed current) to supply the three-pole sub-coil group 11061 and the three-pole sub-coil group 11071 indirectly and in a time-sharing direction. , To form Into a forward three-pole sub-coil group 11062 and a forward three-pole sub-coil group 11072, the movable stator brushless DC motor 11 can continuously increase the torque rotation of the motor through the continuous change mechanism of the stator magnetic field, that is, set The driving circuit 15 of the continuous driving device of the motor is controlled so that the electric actuator 14 drives the forward three-pole sub-coil group 11062 and the forward three-pole sub-coil through the first connecting rod 1108 and the second connecting rod 1109 The group 11072 is moved in the axial position, so that the forward three-pole main coil group 11042, the forward three-pole main coil group 11052, the forward three-pole secondary coil group 11062, and the forward three-pole secondary coil can be continuously added The strength of electromagnetic interaction between the group 11072 and the N-pole permanent magnet 1101 and the S-pole permanent magnet 1102 can continuously increase the rotational torque of the rotating shaft 1103 for the motor to continuously increase torque rotation without affecting the external fixation The current flow of the DC power supply (fixed current power supply, the motor continuously increases the torque rotation).

Or, please refer to Figures 2 and 4, the movable stator brushless DC motor 11 can use the external fixed DC power supply (fixed current) to directly supply power to the three parts of the movable stator device in the forward direction. The pole main coil set 11041 and the three-pole main coil set 11051 form a forward three-pole main coil set 11042 and a forward three-pole main coil set 11052. Through the forward three-pole main coil set 11042, the forward The electromagnetic action between the three-pole main coil assembly 11052 and the N-pole permanent magnet 1101 and the S-pole permanent magnet 1102 can drive the motor permanent magnet rotor with the N-pole permanent magnet 1101 and the S-pole permanent magnet 1102 to rotate, And use the rotating shaft 1103 to drive the load 12 to work (fixed current power supply, normal torque rotation of the motor). The movable stator brushless DC motor 11 can also use the switching circuit 13 to enable the external fixed DC power supply (fixed current) to indirectly and reversely time-share power to the three-pole sub-coil group 11061 and the three-pole sub-coil group 11071 , To form a reverse three-pole sub-coil group 11063 and a reverse three-pole sub-coil group 11073. The movable stator brushless DC motor 11 can also be continuously changed by the stator magnetic field. To work as a motor with continuous reduction torque rotation, that is, to set the driving circuit 15 of the continuous driving device of the motor to make the electric actuator 14 drive the reverse three-pole times through the first link 1108 and the second link 1109 The coil group 11063, the reverse three-pole sub-coil group 11073 are moved in the axial position, so that the forward three-pole main coil group 11042, the forward three-pole main coil group 11052, and the reverse three-pole sub-coil group can be continuously reduced 11063. The intensity of electromagnetic interaction between the reverse three-pole sub-coil assembly 11073 and the N-pole permanent magnet 1101 and the S-pole permanent magnet 1102, so that the rotating torque of the rotating shaft 1103 can be continuously reduced to reduce the torque of the motor continuously Rotation work, and does not affect the current flow of the external fixed DC power supply (fixed current power supply, the motor continuously reduces torque rotation).

Furthermore, please refer to Fig. 3, the movable stator brushless DC motor 11 can use the external fixed DC power source to directly supply the forward three-pole main coil assembly 11042 of the motor movable stator device in a forward time-sharing direction. , The forward three-pole main coil group 11052, through the electromagnetic action between the forward three-pole main coil group 11042, the forward three-pole main coil group 11052 and the N-pole permanent magnet 1101, the S-pole permanent magnet 1102 , Can drive the permanent magnet rotor of the motor with the N-pole permanent magnet 1101 and the S-pole permanent magnet 1102 to rotate, and use the rotating shaft 1103 to drive the load 12 to work. The movable stator brushless DC motor 11 can use the external fixed DC power supply to stop and directly supply power to the forward three-pole main coil group 11042 and the forward three-pole main coil group of the motor movable stator device. 11052, to stop the electromagnetic action between the forward three-pole main coil assembly 11042, the forward three-pole main coil assembly 11052, the N-pole permanent magnet 1101, and the S-pole permanent magnet 1102; the movable stator has no brush DC The motor 11 also uses the switching circuit 13 to enable the external fixed DC power supply to simultaneously supply power to the forward three-pole sub-coil group 11062 and the forward three-pole sub-coil group 11072 at the same time, so that the forward three-pole sub-coil group 11072 can be fixed. Polar sub-coil group 11062, the order To the direction of the electromagnetic action between the three-pole sub-coil assembly 11072 and the N-pole permanent magnet 1101 and the S-pole permanent magnet 1102, the rotation torque of the rotating shaft 1103 can be stopped for the motor to stop torque rotation.

In addition, please refer to Figure 4, the movable stator brushless DC motor 11 can use the external fixed DC power supply to directly supply the forward three-pole main coil assembly 11042, The forward three-pole main coil set 11052, through the electromagnetic action between the forward three-pole main coil set 11042, the forward three-pole main coil set 11052 and the N-pole permanent magnet 1101, the S-pole permanent magnet 1102, The permanent magnet rotor of the motor with the N-pole permanent magnet 1101 and the S-pole permanent magnet 1102 can be driven to rotate, and the rotating shaft 1103 is used to drive the load 12 to work. The movable stator brushless DC motor 11 can use the external fixed DC power supply to stop and directly supply the forward three-pole main coil group 11042 and the forward three-pole main coil group of the motor movable stator device to the forward three-pole main coil group 11042 and the forward three-pole main coil group of the motor. 11052, to stop the electromagnetic action between the forward three-pole main coil assembly 11042, the forward three-pole main coil assembly 11052, the N-pole permanent magnet 1101, and the S-pole permanent magnet 1102; the movable stator has no brush DC In addition, the motor 11 uses the switching circuit 13 to enable the external fixed DC power supply to supply power to the reverse three-pole sub-coil group 11063 and the reverse three-pole sub-coil group 11073 at the same time, so that the reverse three-pole sub-coil can be fixed. The direction of electromagnetic action between the group 11063, the reverse three-pole sub-coil group 11073 and the N-pole permanent magnet 1101, and the S-pole permanent magnet 1102, so that the rotation torque of the rotating shaft 1103 can be stopped to serve as a motor stop torque Turn to work.

In the electromechanical device of the "movable stator brushless DC motor" created by this invention, a movable stator brushless DC motor 11 uses an external fixed DC power supply (fixed current) to directly supply power to a motor movable stator device and drive the motor The permanent magnet rotor rotates (the motor is Constant torque rotation); The movable stator brushless DC motor 11 also uses a motor continuous drive device so that the motor movable stator device can be used as a motor to continuously increase torque rotation without affecting the current flow of the fixed DC power supply (The motor continuously increases the torque rotation), or it can be used for the motor to continuously reduce the torque rotation without affecting the current flow of the fixed DC power supply (the motor continuously reduces the torque rotation). In this way, in the creation of this invention, a "movable stator brushless DC motor" composed of a brushless DC motor, a movable stator device, and a continuous driving device, utilizes this new type of continuous driving of the movable stator and fixed The concept of DC power supply can achieve the electric characteristics and purpose of the brushless DC motor that can continuously increase or decrease the torque driving with a fixed current, so that the battery voltage will not be caused by frequent fluctuations in the battery voltage during the increase or decrease of the torque of the electric vehicle. Battery performance is impaired, or the battery's internal overheating is caused by the battery's long-term or continuous excessive discharge current, causing permanent structural damage to the battery.

The above detailed description is a specific description of a feasible embodiment of the creation of this invention, but this embodiment is not used to limit the scope of the patent for this creation. Any equivalent implementation or modification that does not deviate from the spirit of the creation of this invention, such as ：Equivalent embodiments with other changes should be included in the patent scope of this case.

11‧‧‧Removable stator brushless DC motor

1101‧‧‧N pole permanent magnet

1102‧‧‧S pole permanent magnet

1103‧‧‧Rotating shaft

11042‧‧‧forward three-pole main coil group

11052‧‧‧forward three-pole main coil group

11062‧‧‧Sequential three-pole sub-coil group

11072‧‧‧Sequential three-pole sub-coil group

1108‧‧‧First Link

1109‧‧‧Second Link

12‧‧‧Load

13‧‧‧Switching circuit

14‧‧‧Electric actuator

15‧‧‧Drive circuit

Claims (5)

A movable stator brushless DC motor, including: A movable stator brushless DC motor, the movable stator brushless DC motor is a load driving device; An N-pole permanent magnet is arranged inside the movable stator brushless DC motor; An S-pole permanent magnet is arranged inside the movable stator brushless DC motor; A rotating shaft is arranged inside and outside the movable stator brushless DC motor; A load, located outside the movable stator brushless DC motor; The N permanent magnet and the S pole permanent magnet constitute a motor permanent magnet rotor, and the motor permanent magnet rotor is mechanically connected to the load through the rotating shaft; A three-pole main coil group, located inside the movable stator brushless DC motor; A three-pole sub-coil group, arranged inside the movable stator brushless DC motor; A switching circuit is arranged outside the movable stator brushless DC motor; The three-pole main coil group is directly electrically connected to a fixed DC power supply outside the movable stator brushless DC motor, and the three-pole secondary coil group is indirectly electrically connected to the external fixed DC power supply, that is, the three-pole secondary coil group is first connected to the external fixed DC power supply. After being electrically connected to the switching circuit, the switching circuit is then electrically connected to the external fixed DC power source. The three-pole main coil group and the three-pole sub-coil group constitute the movable stator brushless DC motor and a movable stator device. ； A connecting rod is arranged inside and outside the movable stator brushless DC motor; An electric actuator is arranged outside the movable stator brushless DC motor; A drive circuit is arranged outside the movable stator brushless DC motor; The connecting rod is mechanically connected to the three-pole sub-coil group and the electric actuator, the electric actuator is electrically connected to the drive circuit, and the drive circuit is electrically connected to the external fixed DC power supply. The electric actuator The motor, the drive circuit and the connecting rod constitute a continuous motor drive device of the movable stator brushless DC motor; the three-pole sub-coil assembly, the connecting rod, the electric actuator, the driving circuit and the switching circuit are in parallel A continuous change mechanism of the stator magnetic field is formed to form a movable stator device of a motor that can be driven continuously. The movable stator brushless DC motor described in claim 1, the movable stator brushless DC motor uses the external fixed DC power source to directly supply the three-pole main coil assembly of the motor movable stator device in a forward time-sharing direction In order to form a forward three-pole main coil assembly, the electromagnetic action between the forward three-pole main coil assembly and the N-pole permanent magnet and the S-pole permanent magnet can drive the motor's permanent magnet rotor to rotate, and use the The rotating shaft drives the load to work; the movable stator brushless DC motor can also use the switching circuit to enable the external fixed DC power supply to supply the three-pole sub-coil group in a forward direction and time-sharing indirectly to form a forward three-pole sub-coil group Coil group, the movable stator brushless DC motor can continuously increase the torque rotation of the motor through the continuous change mechanism of the stator magnetic field, that is, the driving circuit of the continuous driving device of the motor is set to control the electric actuator through the The connecting rod drives the forward three-pole secondary coil assembly to move in axial position, so that the forward three-pole primary coil assembly, the forward three-pole secondary coil assembly, the N-pole permanent magnet, and the S-pole permanent magnet can be continuously added. The strength of the electromagnetic interaction between the magnets can continuously increase the rotation torque of the rotating shaft for the motor to continuously increase the torque rotation without affecting the current flow of the external fixed DC power supply. For the movable stator brushless DC motor described in claim 1, the movable stator brushless DC motor can use the external fixed DC power source to directly supply power to the motor in a time-sharing direction. The movable stator device The three-pole main coil set is placed to form a forward three-pole main coil set, and the motor can be driven by the electromagnetic action between the forward three-pole main coil set and the N-pole permanent magnet and the S-pole permanent magnet The permanent magnet rotor rotates, and the rotating shaft is used to drive the load; the movable stator brushless DC motor can also use the switching circuit to make the external fixed DC power supply indirectly and reversely time-sharing power to the three-pole sub-coil assembly In order to form a reverse three-pole sub-coil group, the movable stator brushless DC motor can also continuously reduce the torque rotation of the motor through the continuous stator magnetic field change mechanism, that is, set the driving circuit that controls the continuous driving device of the motor The electric actuator drives the reverse three-pole sub-coil group through the connecting rod for axial position movement, so that the forward three-pole main coil group, the reverse three-pole sub-coil group and the N-pole permanent The intensity of the electromagnetic interaction between the magnet and the S-pole permanent magnet can continuously reduce the rotation torque of the rotating shaft for continuous reduction of torque rotation of the motor without affecting the current flow of the external fixed DC power supply. The movable stator brushless DC motor described in claim 1, the movable stator brushless DC motor utilizes the external fixed DC power source to directly supply the forward three-pole power supply of the movable stator device in the forward direction. The coil assembly, through the electromagnetic action between the forward three-pole main coil assembly and the N-pole permanent magnet and the S-pole permanent magnet, can drive the permanent magnet rotor of the motor to rotate, and use the rotating shaft to drive the load to work; the The movable stator brushless DC motor can use the external fixed DC power supply to stop the direct forward time-sharing power supply to the forward three-pole main coil group of the motor movable stator device, thereby stopping the forward three-pole main coil group Electromagnetic interaction between the N-pole permanent magnet and the S-pole permanent magnet. In addition, the movable stator brushless DC motor also uses the switching circuit to enable the external fixed DC power source to indirectly supply power to the three forward direction at the same time. Pole sub-coil group, so that the forward three-pole sub-coil group can be fixed with The direction of electromagnetic action between the N-pole permanent magnet and the S-pole permanent magnet makes it possible to stop the rotation torque of the rotating shaft for the motor to stop torque rotation. The movable stator brushless DC motor described in claim 1, the movable stator brushless DC motor utilizes the external fixed DC power source to directly supply the forward three-pole power supply of the movable stator device in the forward direction. The coil assembly, through the electromagnetic action between the forward three-pole main coil assembly and the N-pole permanent magnet and the S-pole permanent magnet, can drive the permanent magnet rotor of the motor to rotate, and use the rotating shaft to drive the load to work; the The movable stator brushless DC motor can use the external fixed DC power supply to stop the direct forward time-sharing power supply to the forward three-pole main coil group of the motor movable stator device, thereby stopping the forward three-pole main coil group Electromagnetic interaction with the N-pole permanent magnet and the S-pole permanent magnet. In addition, the movable stator brushless DC motor also uses the switching circuit to enable the external fixed DC power supply to also indirectly supply power to the reverse three poles at the same time The secondary coil assembly can fix the electromagnetic action direction between the reverse three-pole secondary coil assembly and the N-pole permanent magnet and the S-pole permanent magnet, so that the rotational torque of the rotating shaft can be stopped to make the motor stop rotating. Moment rotation works.

Images