WO2017110444A1

WO2017110444A1 - Electric motor

Info

Publication number: WO2017110444A1
Application number: PCT/JP2016/086136
Authority: WO
Inventors: 勝昭藤野
Original assignee: 株式会社空
Priority date: 2015-12-25
Filing date: 2016-12-06
Publication date: 2017-06-29
Also published as: KR102051115B1; JP5920905B1; CN108292885A; CN108292885B; KR20180069893A; JP2017118746A

Abstract

The present invention provides a novel electric motor in which the rotation speed can be controlled without increasing power consumption. The electric motor 10 is provided with a rotor in which a permanent magnet rotates so that either the N or S magnetic pole faces radially outward, a first coil 31 arranged so that the axis is oriented toward the permanent magnet along the circumference of rotation of the permanent magnet, a second coil 32 arranged coaxially with the first coil 31 and further to an outer periphery position than the first coil 31, a control circuit 40 whereby the first coil 31 positioned so as to face one of the magnetic poles of the permanent magnet is energized with a current for generating a magnetic field that is homopolar with the one magnetic pole, and a rotation speed adjustment part 50 for adjusting the current from the second coil 32. In the control circuit 40, an excitation circuit part 42 energizes the first coil 31 when the one magnetic pole is detected by a sensor part 41. The rotation speed adjusting part 50 consumes the current from the second coil 32 and controls the rotation of the permanent magnet.

Description

Electric motor

The present invention relates to an electric motor that can extract electric power.

As an electric motor from which electric power can be extracted, one described in Patent Document 1 is known.
The magnetic power generator described in Patent Document 1 generates power using the magnetic force of a permanent magnet. This magnetic power generator generates power using attraction and repulsive force acting between the motor coil and the permanent magnet by supplying ON / OFF power, and uses the power to generate the permanent magnet and the power generating coil. Are moved relative to each other to generate power, and at least a part of the power energy generated by the power generating coil is used for an ON / OFF power source supplied to the motor coil.

Japanese Patent Laid-Open No. 7-23556

However, in the magnetic power generator described in Patent Document 1, the electric energy extracted from the power generation coil is merely charged to a battery power source or the like as a power source for the motor coil.
The rotation speed of the electric motor can be changed according to the power supply voltage of the electric motor. However, when the power supply voltage of the motor is increased, the power consumption is also increased. If the number of revolutions can be controlled within a predetermined range without increasing the power consumption, the use of the electric motor is expected to expand.

Therefore, an object of the present invention is to provide a new electric motor capable of controlling the rotation speed without increasing power consumption.

The electric motor of the present invention includes a rotor in which a permanent magnet rotates with either one of the N poles and S poles facing outward in the rotational radius direction, and an axis line on the permanent magnet around the permanent magnet rotating. A first winding disposed toward the first winding, a second winding disposed coaxially with the first winding and disposed at an outer peripheral position from the first winding, and one of the magnetic poles of the permanent magnet at an opposing position. A control circuit for energizing the first winding with a current for generating a magnetic field having the same polarity as the one magnetic pole, and adjusting the current from the second winding to adjust the rotation speed of the rotor And an adjusting unit for performing the above operation.

In the electric motor of the present invention, the control circuit energizes the first winding in which one magnetic pole of the permanent magnet is at the opposite position, generates one magnetic pole in the first winding, and rotates the permanent magnet. The second winding outputs the current generated by the rotation of the permanent magnet to the adjustment unit. At this time, the second winding is coaxial with the first winding and is disposed at the outer peripheral position from the first winding, so that the magnetic field generated in the second winding assists the first winding. To do. Therefore, the rotation speed of the permanent magnet in the rotor can be adjusted according to the current flowing through the adjustment unit.

The adjustment unit preferably includes a rectification unit connected to the second winding and a consumption unit that consumes current from the rectification unit. The rotational speed of the permanent magnet can be adjusted according to the current that consumes the direct current rectified by the rectifier, and the current can be effectively utilized in the consumer.

In the permanent magnet, the other magnetic pole, which is the magnetic pole opposite to the one magnetic pole, is directed in the opposite direction to the direction in which the one magnetic pole is directed, and the control circuit is configured such that the other magnetic pole of the permanent magnet faces the opposite position. Preferably, the first winding is provided with a function of supplying a current for generating a magnetic field having the same polarity as the other magnetic pole. When the control circuit generates one magnetic pole in the first winding, it accelerates the rotation of the permanent magnet by generating the other magnetic pole in the other first winding in a position opposite to the first winding. Can do.

It is desirable that the permanent magnet is formed so that the axis position of the rotating shaft of the rotor is thick and narrows toward the outer side in the rotational radius direction. Since the permanent magnet becomes thinner toward the outer side in the rotational radial direction, the magnetic flux from the permanent magnet can be concentrated toward the outer side in the radial direction.

The permanent magnet can be formed so as to become thinner stepwise from the axial position toward the outer side in the rotational radius direction.

The consumption unit can set a resistance value from a short circuit state to an open state. The consumption unit may be a battery charging circuit. Moreover, the said consumption part can be used as a lighting fixture. Furthermore, the consumption unit may be another electric motor.

Since the electric motor of the present invention can adjust the rotation speed of the permanent magnet according to the current flowing through the adjusting section, it can be a new electric motor that can control the rotation speed without increasing the power consumption.

It is a figure for demonstrating the rotor and stator of an electric motor which concern on embodiment of this invention. It is a figure for demonstrating the sensor part of the electric motor shown in FIG. It is a figure for demonstrating the control circuit of the electric motor shown in FIG. It is a figure of a measurement waveform when operating the electric motor shown in Drawing 1 to Drawing 3, and making consumption current 0A. It is a figure of a measurement waveform when operating the electric motor shown in Drawing 1 to Drawing 3, and making consumption current 16A. Relationship between the input voltage to the first winding, the input current, the output voltage from the second winding, the output current, and the rotation speed when the electric motor shown in FIGS. 1 to 3 is operated from 0 A to 18 A. It is the list which measured.

DESCRIPTION OF SYMBOLS 10 Electric motor 20 Rotor 21 Permanent magnet 211 1st part 212 2nd part 213 3rd part 214 4th part 22 Rotor main body 30 Stator 31 1st winding 32 2nd winding 33 Core 40 Control circuit 41 Sensor part 411 1st sensor part 412 2nd sensor part 41a Photointerrupter 41b Shielding plate 42

Excitation circuit part

421a, 421b 1st FET
422a, 422b Second FET
423a, 423b 3rd FET
G Gate terminal S Source terminal D Drain terminal R11, R12, R21, R22, R31, R32, R41, 42 Resistor C11, C12 Capacitor D11, D12, D21, D22 Diode 50 Adjustment unit 51 Rectification unit 52 Consumption unit X1, X2 Axis

An electric motor according to an embodiment of the present invention will be described with reference to the drawings.
An electric motor 10 shown in FIG. 1 includes a rotor 20 and a stator 30.
The rotor 20 includes a permanent magnet 21 and a rotor body 22 that holds the permanent magnet.
The permanent magnet 21 is arranged along the diameter direction of rotation about the axis X1 of the rotation axis (not shown) of the rotor 20, so that one of the magnetic poles (for example, N pole) is in the radial direction of rotation. The other magnetic pole (for example, the S pole) that is the opposite magnetic pole to the one magnetic pole is directed in the opposite direction to the direction in which the one magnetic pole is directed.
The permanent magnet 21 is such that the first portion 211 located on the axis X1 of the rotor 20 is thick, and the second portion 212, the third portion 213, and the fourth portion 214 are narrower and shorter toward the outer side in the rotational radius direction. Is formed. As the permanent magnet 21, a neodymium magnet having a stronger magnetic force than other magnets can be used.

The rotor body 22 has protrusions formed at the upper end and the lower end of the axial position of the rotation shaft, and is rotatably held by a frame (not shown).

The stator 30 is disposed around the rotor 20. The stator 30 includes a first winding 31 disposed with the axis X2 facing the permanent magnet 21, and a second winding disposed coaxially with the first winding 31 and disposed at an outer peripheral position from the first winding 31. A wire 32 and a core 33 disposed on the axis X2 of the first winding 31 and the second winding 32 are provided.

Six first windings 31 are provided in a frame (not shown) by being arranged at every 60 degrees around the rotor 20 as a center. Six second windings 32 are also provided by being arranged coaxially with the first winding 31.

In the present embodiment, one permanent magnet 21 is embedded in the rotor body 22 and the stator 30 is disposed around the rotor magnet 22, but the permanent magnets 21 are equally spaced along the axis X 1 of the rotor body 22. You may make it arrange | position for every rotation angle. For example, when two permanent magnets 21 are arranged, if another permanent magnet 21 is arranged in a direction orthogonal to the permanent magnet 21, the N pole or the S pole is directed to the first winding 31 every 90 degrees. Can be arranged. A control circuit 40 is connected to the first winding 31.

2 and 3, the control circuit 40 includes a sensor unit 41 and an excitation circuit unit 42. The control circuit 40 shown in FIG. 3 is illustrated for one first winding 31 and second winding 32, and for each of the first winding 31 and the second winding 32, a sensor unit 41 and , An excitation circuit section 42 is provided.

The sensor unit 41 includes a first sensor unit 411 that detects the position of the N pole of the permanent magnet 21 and a second sensor unit 412 that detects the position of the S pole of the permanent magnet 21.
The first sensor unit 411 and the second sensor unit 412 are arranged at six locations along the circumferential direction of the rotor. As shown in FIG. 3, a transmissive photo interrupter 41a composed of a light emitting diode and a photodiode, A shielding plate 41b that rotates together with the child 20 and passes between the light emitting diode of the transmissive photo interrupter 41a and the photodiode is provided.

The shielding plate 41b of the first sensor unit 411 and the second sensor unit 412 has a function of detecting the position of the permanent magnet 21 when the shielding plate passes through the photo interrupter 41a as a dog.
The shielding plate 41b of the first sensor unit 411 is arranged corresponding to the position of the N pole of the permanent magnet 21, and the shielding plate 41b of the second sensor unit 412 is arranged corresponding to the position of the S pole of the permanent magnet 21. Has been.
In addition, the 1st sensor part 411 and the 2nd sensor part 412 of FIG. 3 have shown what was located in a rotation radius direction of the rotor 20. FIG.

The exciting circuit unit 42 controls the energization direction to the first winding 31 with the first sensor unit 411 and the second sensor unit 412 located in the same radial direction as a set.
The excitation circuit unit 42 controls the energization direction to the first winding 31 by transistors from the

first FETs

421a and 421b to the

third FETs

423a and 423b.
The first FET 421a and the third FET 423a are n-type FETs. The

second FETs

422a and 422b are p-type FETs.

The gate terminals G of the

first FETs

421a and 421b are connected to the photo interrupter 41a via resistors R11 and R12. Further, the source terminals S of the

first FETs

421a and 421b are grounded.

In the

second FETs

422a and 422b, the source terminal S is connected to the power supply via the diodes D11 and D12, and is grounded via the capacitors C11 and C12. The gate terminals G of the

second FETs

422a and 422b are connected to the drain terminals D of the

first FETs

421a and 421b through the resistors R21 and R22, and are connected to the source terminals S of the

second FETs

422a and 422b through the resistors R31 and R32. It is connected. The drain terminals D of the

second FETs

422a and 422b are connected to the anode terminals A of the diodes D21 and D22, are grounded via the capacitors C11 and C12, and are connected to the drain terminals D of the

third FETs

423a and 423b.

The gate terminals G of the

third FETs

423a and 423b are connected to the photo interrupter 41a via resistors R41 and R42. The source terminals S of the

third FETs

423a and 423b are grounded.
One wiring of the first winding 31 is connected to the drain terminal D of the second FET 422a and to the drain terminal D of the third FET 423a.
The other wiring of the first winding 31 is connected to the drain terminal D of the second FET 422b and to the drain terminal D of the third FET 423b.

An adjustment unit 50 (rotation speed adjustment unit) that adjusts the rotation speed of the rotor 20 is connected to the second winding 32.
The adjustment unit 50 includes a rectification unit 51 and a consumption unit 52. The rectifying unit 51 can be configured by a diode bridge. In the adjusting unit 50 shown in FIG. 3, the consuming unit 52 is connected to the rectifying unit 51 on a one-to-one basis. However, the adjusting unit 50 is also connected to the other second winding 32 by the rectifying unit 51. A plurality of rectification units 51 are also connected to one consumption unit 52.

The consumption unit 52 may be a variable resistor, but a load that effectively uses electrical energy may be connected instead of the variable resistor. For example, a battery charging circuit, a lighting fixture, or an electric motor can be used. The consumption part 52 can set a resistance value from a short circuit state to an open state.

The operation of the electric motor according to the embodiment of the present invention configured as described above will be described with reference to the drawings. Power is supplied to the control circuit 40 shown in FIG.
For example, when the N pole of the permanent magnet 21 is positioned in the first winding 31, the shielding plate 41 b is positioned in the photo interrupter 41 a of the first sensor unit 411 in the sensor unit 41.
By blocking the light transmission of the photo interrupter 41a, the photo transistor of the photo interrupter 41a of the first sensor unit 411 is energized. When the phototransistor is energized, the gate terminal G of the first FET 421a and the gate terminal G of the third FET 423a connected to the photointerrupter 41a via the resistors R11 and R41, the first FET 421a and the third FET 423a are turned on. Becomes the first voltage.

Further, when the shielding plate 41b is located at the photo interrupter 41a of the first sensor unit 411, the shielding plate 41b is not located at the photo interrupter 41a of the second sensor unit 412, so that the photo interrupter 41a is in a non-energized state. Therefore, the first FET 421b and the third FET 423b are turned off between the gate terminal G of the first FET 421b and the gate terminal G of the third FET 423b connected to the photo interrupter 41a of the second sensor unit 412 via the resistors R12 and R42. The second voltage (0 V) is lower than the first voltage.

When the first FET 421b is off, the gate terminal G of the second FET 422a connected to the drain terminal D of the first FET 421b via the resistor R21 is the first FET 422a turned off by the resistor R31 connected to the power source Vss. Voltage.

When the first FET 421a is in the on state, the resistor R22 is connected to the drain terminal D of the first FET 421a, so that the gate terminal G of the second FET 422b becomes a second voltage that turns on the second FET 422b.

Thus, when the ON state and the OFF state of the

first FETs

421a and 421b to the

third FETs

423a and 423b are determined, the current from the power supply Vss flows into the source terminal S of the second FET 422b via the diode D12, and the second FET 422b From the drain terminal D to the first winding 31. A current flows from the drain terminal D of the third FET 423 a to the source terminal S from the opposite side of the first winding 31, so that the first winding 31 generates a magnetic field of the same polarity that repels the N pole of the permanent magnet 21. appear.
Due to the magnetic field generated by the first winding 31, the N pole of the permanent magnet 21 repels and the rotor 20 rotates.

On the other hand, on the S pole side of the permanent magnet 21, the shielding plate 41 b is located in the photo interrupter 41 a of the second sensor unit 412 in the sensor unit 41.
By blocking the light transmission of the photo interrupter 41a, the photo transistor of the photo interrupter 41a of the second sensor unit 412 is energized. When the phototransistor is energized, the first FET 421b and the third FET 423b are turned on when the gate terminal G of the first FET 421b and the gate terminal G of the third FET 423b connected to the photointerrupter 41a via the resistors R12 and R42, respectively. Becomes the first voltage.

Also, when the shielding plate 41b is positioned on the photo interrupter 41a of the second sensor unit 412, the shielding plate 41b is not positioned on the photo interrupter 41a of the first sensor unit 411, so that the photo interrupter 41a is in a non-energized state. Therefore, the first FET 421a and the third FET 423a are turned off between the gate terminal G of the first FET 421a and the gate terminal G of the third FET 423a connected to the photo interrupter 41a of the first sensor unit 411 via the resistors R11 and R41. The second voltage is obtained.

When the first FET 421a is in the off state, the gate terminal G of the second FET 422b connected to the drain terminal D of the first FET 421a via the resistor R22 has the first FET 422b turned off by the resistor R32 connected to the power source Vss. Voltage.

When the first FET 421b is in the ON state, the resistor R21 is connected to the drain terminal D of the first FET 421b, so that the gate terminal G of the second FET 422a becomes the second voltage that turns on the second FET 422a.

Thus, when the ON state and the OFF state of the

first FETs

421a, 421b to the

third FETs

423a, 423b are determined, the current from the power source Vss flows into the source terminal S of the second FET 422a via the diode D11, and the second FET 422a From the drain terminal D to the first winding 31. A current flows from the drain terminal D of the third FET 423 b to the source terminal S from the opposite side of the first winding 31, so that the first winding 31 generates a magnetic field of the same polarity that repels the S pole of the permanent magnet 21. appear.
Due to the magnetic field generated by the first winding 31, the south pole of the permanent magnet 21 repels and the rotor 20 rotates.

The pair of first windings 31 facing each other with the rotor 20 interposed therebetween excites a magnetic field repelled by the permanent magnet 21, so that the rotor 20 is driven, and the first winding 31 that is excited (energized) includes the sensor unit. The rotor 20 continues to rotate by being sequentially switched in the rotation direction by 41.

In this way, when the N pole of the permanent magnet 21 approaches the first winding 31 arranged at a certain position, the exciting circuit unit 42 that controls the first winding 31 generates the N pole in the first winding 31. At the same time, the control circuit 40 for energizing the first winding 31 at a position opposite to the first winding 31 energizes a current having an opposite energization direction to generate the S pole, thereby generating the permanent magnet 21. Can be accelerated.

When the first winding 31 is energized, power is generated in the second winding 32. The current from the second winding 32 is full-wave rectified by the rectification unit 51 and flows to the consumption unit 52. In the consumption part 52, the electric power from the 2nd coil | winding 32 is consumed by the set resistance value.

The permanent magnet 21 includes a second portion 212, a third portion 213, a fourth portion 214, and a rotational radius direction outward from the first portion 211 located on the axis X 1 of the rotation axis of the rotor 20. Since it becomes thinner toward the outside, the magnetic flux from the permanent magnet 21 can be concentrated toward the outside in the rotational radius direction, so that the magnetic field for the first winding 31 can be made stronger. In addition, since the permanent magnet 21 is formed to be thinner stepwise toward the outer side in the rotational radius direction, the permanent magnet 21 can be formed by connecting magnets having different thicknesses. Therefore, the permanent magnet 21 can be manufactured easily and inexpensively.

(Example)
The electric motor 10 according to the present embodiment that operates in this way is manufactured, and the input voltage and input current to the first winding 31, the output voltage and output current from the second winding 32, and the rotor 20 The relationship with the rotational speed was measured.
The 1st coil | winding 31 used what wound the copper clad aluminum wire ((PHI) 1.6mm) 1000 times. The second winding 32 was a copper clad aluminum wire (Φ1.6 mm) wound 1000 times.

The permanent magnet 21 has a first portion 211 having a diameter of 100 mm and a length of 90 mm, a second portion 212 having a diameter of 80 mm and a length of 50 mm, a third portion 213 having a diameter of 50 mm and a length of 20 mm, A 4 part 214 was a neodymium magnet having a diameter of 25 mm and a length of 3 mm.

As the power source V _SS supplied to the first winding 31, a digital programmable direct current stabilized power source PVD150-40T manufactured by Kikusui Electronics Co., Ltd. was used. Further, GP035-10 manufactured by Takasago Manufacturing Co., Ltd. was used as the power source V _EE for the first sensor unit 411 and the second sensor unit 412. Further, a multifunctional electronic load device LN-1000C-G7 manufactured by Measurement Technology Laboratory Co., Ltd. was used as the consumption unit 52.

120 V was applied as the power source V _SS to the excitation circuit unit 42, and the output current taken out from the consumption unit 52 was measured every 2A from 0A to 18A. The waveforms when the output current was 0 A and 16 A were observed.
The oscilloscope used was DL-4050 manufactured by Yokogawa Electric Corporation, the probes used were passive probe 701939 and differential probe 7000924 manufactured by Yokogawa Electric Corporation, and current probe TA018 manufactured by Pico Technology.

The measurement waveforms shown in FIG. 4 and the measurement waveforms shown in FIG. 5 are respectively the output voltage of the first sensor unit 411, the output voltage of the second sensor unit 412, and the input voltage to the first winding 31. , Input current to the first winding 31, output voltage of the second winding 32, and output current of the second winding 32.

First, the case where the consumption current of the consumption unit 52 is 0 A will be described based on the measurement waveform shown in FIG. In the following description, the voltage to the first winding 31 indicates a relative voltage applied to the other wiring with respect to one wiring. Therefore, if the potential of the other wiring is higher than the potential of one wiring, it is a positive voltage, and the opposite is expressed as a negative voltage. Further, when the voltage is positive, the current flows from one wiring of the first winding 31 to the other wiring through the first winding 31 (positive current). When the voltage is negative, the current flows in the opposite direction. (Negative current).

As shown in FIG. 4, when the first sensor unit 411 detects the N pole and the output becomes valid, a negative voltage is applied to the first winding 31 (see reference S101). A negative current corresponding to the negative voltage flows through the first winding 31 (see S102).
In the second winding 32, when the N pole approaches, power is generated before the first sensor unit 411 detects the N pole, and a negative voltage is generated (see S103).
However, a negative current flows through the first winding 31 and the second winding 32 is electromagnetically induced, thereby generating a positive voltage (see S104). Since the consumption current of the consumption unit 52 is 0 A (open state), no current flows through the second winding 32 (see S105).
When the output of the first sensor unit 411 becomes invalid, a counter electromotive force is generated in the first winding 31, and thus the first winding 31 becomes a positive voltage (see S 106). Further, the current of the first winding 31 gradually decreases and approaches 0 A (see reference numeral S107).

In the second sensor unit 412, the positive voltage is applied to the first winding 31 by detecting the N pole and making the output valid (see S 108). A positive current corresponding to the positive voltage flows through the first winding 31 (see S109).
In the second winding 32, when the S pole approaches, power is generated before the second sensor unit 412 detects the S pole, and a positive voltage is generated (see S110).
However, a positive current flows through the first winding 31 and the second winding 32 is electromagnetically induced to generate a negative voltage (see reference numeral S111). Since the consumption current of the consumption unit 52 is 0 A, no current flows through the second winding 32 (see S112).
When the output of the second sensor unit 412 becomes invalid, a counter electromotive force is generated in the first winding 31, and thus the first winding 31 becomes a negative voltage (see reference S 113). Further, the current of the first winding 31 gradually decreases and approaches 0 A (see S114).
The permanent magnet 21 of the rotor 20 is rotated by the magnetic field excited by the first winding 31.

Next, the case where the consumption current of the consumption unit 52 is 16 A will be described based on the measurement waveform shown in FIG.
As shown in FIG. 6, when the first sensor unit 411 detects the N pole and the output becomes valid, a negative voltage is applied to the first winding 31 (see S121). A negative current corresponding to the negative voltage flows through the first winding 31 (see S122).
In the second winding 32, when the N pole approaches, the first sensor unit 411 generates power before detecting the N pole, generates a negative voltage, and a negative current flows to the consumption unit 52 ( References S123 and S124).
Although a negative current flows through the first winding 31 and the second winding 32 is electromagnetically induced, the second winding 32 outputs a negative voltage and a negative current (see symbols S125 and S126).
When the output of the first sensor unit 411 becomes invalid, a counter electromotive force is generated in the first winding 31, so that the first winding 31 becomes a positive voltage (see reference sign S 127). Further, the current of the first winding 31 gradually decreases and approaches 0 A (see S128).

At this time, in the second winding 32, when the S pole approaches, power is generated before the second sensor unit 412 detects the S pole, and a positive voltage and a positive current are generated (reference numerals S129 and 130). reference).
When the second sensor unit 412 detects the south pole and becomes effective, a positive voltage is applied to the first winding 31 (see reference numeral S131). A positive current corresponding to the positive voltage flows through the first winding 31 (see S132).
A positive current flows through the first winding 31 and the second winding 32 is electromagnetically induced, but the second winding 32 outputs a positive voltage and a positive current (see symbols S133 and S134).
When the output of the second sensor unit 412 becomes invalid, a counter electromotive force is generated in the first winding 31, and thus the first winding 31 becomes a negative voltage (see reference S 135). In addition, the current of the first winding 31 gradually decreases and approaches 0 A (see S136).
Thus, when the consumption current of the consumption unit 52 increases, the second winding 32 arranged coaxially with the first winding 31 is caused by the permanent magnet 21 of the rotor 20 rather than the electromagnetic induction by the first winding 31. The electromagnetic induction becomes larger, and the generated current generates a magnetic field that assists the first winding 31.

Here, the result of measuring the output current extracted from the consumption unit 52 every 2A from 0A to 18A is shown in FIG.
As can be seen from the table shown in FIG. 6, when the input voltage to the first winding 31 is constant and the output current taken out from the second winding 32 by the consumption unit 52 is increased, the input to the first winding 31 is increased. Although the current is substantially constant and the output voltage to the consumption unit 52 decreases, the rotational speed of the rotor 20 gradually decreases from 10A, although the current consumption (output current) decreases from 0A to 8A.
It can also be seen that the output power is highest when 10 A having the lowest rotational speed is taken out from the second winding 32.

Here, the difference between the input power of the first winding 31 that is an electric coil and the output power from the second winding 32 that is a power generation coil is the power consumption of the motor 10, but the power consumption (the first winding 31). The input power of the second winding-the output power of the second winding) is from 2544.4 W to 2069.3 W when the output current is 14 A, based on the current taken out from the second winding 32 (output current) being 0 A. It continues to decrease. And although power consumption increases from the output current 14A, it is 2345.0W even when the output current is 18A, and does not exceed 2544.4W when the output current is 0A.

As described above, since the rotation speed can be adjusted by adjusting the current consumption by the adjustment unit 50 of the motor 10, the motor 10 is a new motor that can control the rotation speed without increasing the power consumption. Can do.

The present invention is suitable for the field using mechanical operation and electrical operation by the rotation output because the adjustment unit can extract electric power while obtaining the rotation output as an electric motor.

Claims

A rotor in which the permanent magnet rotates with the magnetic pole of either the N pole or the S pole facing outward in the rotational radius direction;
A first winding disposed around the rotation of the permanent magnet so that the axis is directed to the permanent magnet;
A second winding that is coaxial with the first winding and disposed at an outer peripheral position from the first winding;
A control circuit for energizing a current to generate a magnetic field having the same polarity as the one magnetic pole in the first winding in which the one magnetic pole of the permanent magnet is in an opposing position;
An electric motor comprising: an adjustment unit that adjusts a current from the second winding to adjust a rotation speed of the rotor.
2. The electric motor according to claim 1, wherein the adjustment unit includes a rectification unit connected to the second winding and a consumption unit that consumes a current from the rectification unit.
In the permanent magnet, the other magnetic pole, which is a magnetic pole opposite to the one magnetic pole, is directed in a direction opposite to the direction in which the one magnetic pole is directed,
2. The control circuit according to claim 1, wherein the control circuit has a function of supplying a current for generating a magnetic field having the same polarity as that of the other magnetic pole to the first winding in which the other magnetic pole of the permanent magnet is located at an opposing position. 2. The electric motor according to 2.
2. The electric motor according to claim 1, wherein the permanent magnet has a thick axial line position of a rotating shaft of the rotor and narrows toward an outer side in a rotating radial direction.
The electric motor according to claim 4, wherein the permanent magnet is formed so as to become thinner stepwise from the axial position toward the outer side in the rotational radius direction.
The electric motor according to claim 2, wherein the consumption unit can set a resistance value from a short circuit state to an open state.
The electric motor according to claim 2, wherein the consumption unit is a battery charging circuit.
The electric motor according to claim 2, wherein the consumption unit is a lighting fixture.
The electric motor according to claim 2, wherein the consumption unit is another electric motor.