DC MOTOR WITH MULTIPLIED TORQUE

• US 20180309352A1
• Filed: 03/05/2018
• Published: 10/25/2018
• Est. Priority Date: 04/21/2017
• Status: Abandoned Application

• Current Assignee: Livid Zhuang
• Original Assignee: Livid Zhuang
• Inventors: ZHUANG, LIVID
• Application Number:
  US15/911,410
• Publication Number:
  US 20180309352A1
• Time in Patent Office: Days
• CPC Class Codes: H02K 11/215 Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements
• CPC Class Codes: H02K 29/08 using magnetic effect devices, e.g. Hall-plates, magneto-resistors H02K29/12 takes precedence
• CPC Class Codes: H02P 6/10 Arrangements for controlling torque ripple, e.g. providing reduced torque ripple
• CPC Class Codes: H02P 6/16 Circuit arrangements for detecting position

Abstract

A DC motor includes a driver, a Hall rotor position detector, an electromagnet stator and a permanent magnet rotor. The driver includes a rotor position signal amplifier and a power amplifier. The rotor position detector includes six Hall sensing crystals and an induced magnet fixed to a motor shaft. A rotor pole position signal is detected by the Hall effect between the induced magnet and the Hall sensing crystals. Power is amplified by the power amplifier and supplied to a winding of an electromagnet stator, so that the pole of electromagnet stator keeps repelling and attracting the pole of the permanent magnet rotor to produce a multiplied torque according to the relative displacement to drive the generator by the multiplied torque and achieve the effects of outputting an electric power greater than the electric power provided for the operation of the motor, amplifying the electric power, and saving energy.

Claims

1. A DC motor with a multiplied torque, comprising a driver, a rotor position detector, an electromagnet stator, and a permanent magnet rotor, characterized in that the driver comprises a rotor position signal amplifier and a power amplifier;

the rotor position detector is a rotor position detector with a Hall effect and comprised of six Hall sensing crystals and an induced magnet fixed to a motor shaft, wherein each Hall sensing crystal is separated and configured at a mechanical angle of 60°

, and each Hall sensing crystal is installed at a predetermined position on the left side of the center point under a pole face of the N pole of each-phase electromagnet stator pole, and the sequence of the phases is U→

V→

W→

U→

V→

W;

the induced magnet is fixed to the motor shaft by setting the width of the mechanical included angle and rotated synchronously with the motor shaft, and the induced magnet is installed across two Hall sensing crystals, and the front Hall sensing crystal rotated by the induced magnet is sensed to be an ON state, the adjacent rear Hall sensing crystal is delayed and turned OFF, so that the excitations of the two adjacent magnetic fields are overlapped. The electromagnet stator is configured into three windings (U, V, and W phases), and the difference between the mechanical angles of any two windings is 60°

, and the windings of three phases of the electromagnet stator are arranged into three layers in the radial direction of the motor, and the windings of different phases are overlapped with each other, and each winding has 4 poles, and each pole has a pole width equal to a mechanical angle of 71°

, and the poles are spaced with a mechanical angle of 19°

, and the poles of different phase are arranged adjacent to one another in a sequence of N→

S→

N, and the phase sequence is U→

V→

W;

the wiring of the stator of each phase is connected by Y, wherein the contact point Y and the other U, V, W ends of the contact point Y are input ends of a DC power to form an input of a single-phase DC power;

the permanent magnet rotor is configured into 4 poles arranged into a (N, S, N, S) sequence;

the Hall effect between the induced magnet coaxially rotated with the motor and the 6 Hall sensing crystals is provided for detecting a pole position signal of the permanent magnet rotor, and the electric power is amplified by the power amplifier of the driver and then supplied to the winding of the electromagnet stator of the motor, so that the pole of the electromagnet stator pole is always sequentially turned ON or OFF with the pole of the permanent magnet rotor, and the pole of the permanent magnet rotor and the pole of the electromagnet stator keep repelling and then attracting to produce a relative displacement for the rotation.

2. The DC motor with a multiplied torque according to claim 1, wherein each Hall sensing crystal of the rotor position detector is installed at a position of a mechanical angle of 26°

on the left side of the center point under the pole face of the N pole of the electromagnet stator poles of each phase.

3. The DC motor with a multiplied torque according to claim 1, wherein the induced magnet of the rotor position detector is fixed to the motor shaft with a width of a mechanical included angle of 75°

.

4. The DC motor with a multiplied torque according to claim 1, wherein when the induced magnet rotated by the front Hall sensing crystal rotor position detector is sensed to be ON, the adjacent rear Hall sensing crystal is delayed by a mechanical angle of 15°

and turned OFF, and the excitations of two adjacent magnetic fields of the electromagnet stator is overlapped by a mechanical angle of 15°

.

5. The DC motor with a multiplied torque according to claim 1, wherein the front edge of the induced magnet of the rotor position detector, the rear edge of the two N poles of the permanent magnet rotor, and the center point of the motor shaft are configured and extended linearly with respect to one another.

6. The DC motor with a multiplied torque according to claim 1, wherein each of the four poles of the permanent magnet rotor has a width equal to a spacing between a mechanical angle of 69°

and a mechanical angle of 21°

.

7. The DC motor with a multiplied torque according to claim 1, wherein the electromagnet stator has a magnetic field arranged in a way of having a radial section of the magnetic field winding, a V-phase at the middle of a side of the circumference, and a polar direction of a S pole;

the left side is U-phase, and the polar direction is N pole; and

the right side is W-phase, and the polar direction is N pole, viewing from the axial direction of the motor.

8. The DC motor with a multiplied torque according to claim 1, wherein the six Hall sensing crystals of the rotor position detector are sequentially numbered by U equal to 1, 4, V equal to 2, 5, and W equal to 3, 6, and when the six Hall sensing crystals are arranged sequentially clockwise, the power of the rotor position signal detected by the first and fourth Hall sensing crystals is amplified by the power amplifier of the driver and supplied to an U-phase stator power supply of the motor;

the power of rotor position signal detected by the second and fifth Hall sensing crystals is amplified by the power amplifier of the driver and supplied to a V-phase stator power supply of the power amplifier;

the power of the rotor position signal detected by the third and sixth Hall sensing crystals is amplified by the power amplifier of the driver and supplied to a W-phase stator power supply of the motor.

9. The DC motor with a multiplied torque according to claim 1, wherein when the front Hall sensing crystal of the rotor position detector is induced and conducted by the induced magnet, the adjacent rear Hall sensing crystal is delayed by a mechanical angle of 15°

and turned off, so that the rear end of the N pole of the permanent magnet rotor enters into a mechanical angle of 10°

under the pole face of the N pole of the electromagnet stator to drive the N pole of the electromagnet stator of the phase and the N pole of the permanent magnet rotor to be like poles that repel each other, and the N pole of the electromagnet stator of the rear phase and the S pole of the permanent magnet rotor to be unlike poles that attract each other, so that the electromagnet at this moment has 2-phase poles repelling and then attracting the pole of the permanent magnet rotor to drive the pole of the permanent magnet rotor and the pole of the electromagnet stator to produce a relative displacement for the operation, and when the rear end of the induced magnet enters into the center point of the rear Hall sensing crystal, and displaces the S pole of the permanent magnet rotor to a position before a mechanical angle of 6°

of an equilibrium point to attract the N pole of the rear-phase electromagnet stator, the excitation of the rear-phase electromagnet stator is turned off, and only the front-phase electromagnet stator continues the magnetic excitation, so that the S pole of the permanent magnet rotor keeps repelling the S pole of the front-phase electromagnet stator to produce the relative displacement for the operation.

10. The DC motor with a multiplied torque according to claim 1, wherein the permanent magnet of the permanent magnet rotor has an external periphery in an arc shape with a thicker center point and two thinner ends.