JP2002058223A - Permanent magnet type dynamoelectric machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a permanent magnet type dynamoelectric machine which has the excellent operation reliability and can suppress the decline of the efficiency and the increase of heat generation. SOLUTION: A diameter outside rotor 100 which is turned facing the inner circumferential surface of an armature core 301 has permanent magnets 103 foming field fluxes. A diameter inside rotor 200 comprises an anisotropic rotary yoke or a magnet rotor which has an outer circumferential surface facing the inner circumferential surface of the diameter outside rotor 100 and is provided rotatably. The relative angle between both the rotors is adjusted to control the characteristics mechanically.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a permanent magnet type rotating electric machine in which a magnet rotor having a permanent magnet rotates while facing an inner peripheral surface of a stator core.

[0002]

2. Description of the Related Art As a synchronous machine (including a so-called brushless DC motor), a magnet type rotor structure and a magnetic salient pole type rotor structure are known. In each case, a field pole vector (rotation vector) of these rotors is used. It is known that the relative rotation angle (phase angle) between the armature current vector (rotation vector) and the armature current vector (rotation vector) is controlled by adjusting the armature current vector to adjust the torque and the generated voltage. .

Japanese Patent Application Laid-Open No. 11-275789 discloses an embedded magnet type electric motor in which a slit near a magnet insertion portion of an embedded magnet type rotor incorporates a short-circuit iron piece which moves radially outward by centrifugal force and short-circuits a field flux. Is disclosed.

[0004] Since the movement of the short-circuit iron piece can reduce the effective field magnetic flux linked to the stator coil,
It is not necessary to perform the phase control of the armature current vector (so-called field weakening) as in the conventional synchronous machine described above, and it is not necessary to supply the field weakening current for reducing the field magnetic flux to the armature coil. Efficiency can be improved.

[0005]

However, in the above prior art using the short-circuit iron, the operation of the short-circuit iron is controlled by a delicate balance between the elastic force of the spring for urging the short-circuit iron and the centrifugal force of the short-circuit iron. Therefore, when the rotor rotates with speed fluctuation or rapid acceleration / deceleration, the amount of magnetic flux fluctuates or oscillates, causing a problem that hunting occurs or required torque or power generation voltage cannot be secured.

Further, since the movable short-circuit iron piece is held by the rotor rotating at a high speed while maintaining the movability, there has been a problem that reliability and durability are deteriorated due to a complicated structure.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a permanent magnet type rotating electric machine having excellent operation reliability and capable of suppressing a decrease in efficiency and an increase in heat generation.

[0008]

According to a first aspect of the present invention, there is provided a permanent magnet type rotating electric machine comprising: a stator having an armature core wound with an armature coil and fixed to a housing; and a plurality of permanent magnets. And a rotor that rotates while facing the inner peripheral surface of the armature core, wherein the rotor has a permanent magnet that forms a field magnetic flux that links with the armature coil. A cylindrical radial outer rotor rotatably disposed and having an outer peripheral surface facing the inner peripheral surface of the radial outer rotor, and a rotatable relative angular position with respect to the radial outer rotor. And a rotor angle adjusting unit for mechanically adjusting the relative angular position between the two rotors.

That is, in the rotor of this configuration, a radial inner rotor is provided further radially inside a magnet rotor (radial outer rotor) that rotates while facing the inner peripheral surface of the stator core. These two rotors form part of a closed magnetic circuit through which a field flux formed by the permanent magnet flows.

In this configuration, since the rotor inside the radial direction can be rotated relative to the magnet rotor by driving the rotor angle adjusting section, the rotor can be rotated relative to the magnet rotor. The characteristics of the rotating electric machine can be adjusted to an optimum state by adjusting the effective field magnetic flux linked to the stator coil.

For example, an excessive generated voltage at the time of high-speed rotation is weakened, or an excessive output voltage is applied to the internal semiconductor element of the AC / DC bidirectional conversion circuit for a long time, for example, by opening an output terminal of the AC / DC bidirectional conversion circuit. Such a problem can be prevented.

According to this configuration, it is possible to avoid a decrease in operation reliability due to the use of the above-mentioned short-circuit iron piece, and it is not necessary to supply a weakening field current to the armature coil. Can be deterred.

Further, since the maximum value and the effective value of the armature current associated with the reduction of the supply of the invalid exciting current vector can be reduced,
The semiconductor switching element of the AC / DC bidirectional conversion circuit that supplies power to the armature coil can be reduced in size, and the heat generation thereof can be reduced.

According to a second aspect of the present invention, in the permanent magnet type rotating electric machine according to the first aspect, the radial inner rotor further comprises a magnetic salient pole forming a yoke as a part of a magnetic circuit through which the field magnetic flux flows. Since it is made of a mold rotor, the radial inner rotor can have a simple configuration, and the robustness can be improved.

[0015] The magnetic salient pole type rotor referred to in this specification means that the radial inner rotor is made of a soft magnetic material,
The magnetic resistance between two points separated by a predetermined pitch in the circumferential direction of the outer peripheral surface means a different rotor in each part in the circumferential direction, preferably, the magnetic resistance between the two points, as the two points move in the circumferential direction, Repeat the change continuously.

According to a third aspect of the present invention, in the permanent magnet type rotating electric machine according to the first aspect, the permanent magnet of the radially outer rotor has a plurality of magnetic poles on inner and outer peripheral surfaces of the radially outer rotor. The magnetic poles are alternately formed in the circumferential direction, and the radially inner rotor is formed with a plurality of magnetic poles alternately in the circumferential direction on the outer peripheral surface of the radially inner rotor, and the magnetic poles of the both rotors are formed at the same circumferential pitch. It is characterized by that.

According to this configuration, when the magnetic poles of the two rotors face each other in the circumferential direction with the same polarity in the radial direction, the effective field magnetic flux is almost zero, and when the magnetic poles face each other in the opposite direction in the radial direction, they are aligned. The field magnetic flux can be substantially doubled as compared with the case of using only the radially outer rotor, a large torque or voltage adjustment range can be obtained, and a compact and large output can be realized.

According to a fourth aspect of the present invention, in the permanent magnet type rotating electric machine according to any one of the first to third aspects,
The rotor angle adjuster includes a sun gear individually fixed to the rotors, a planetary gear rotatably supported on the same support shaft and individually meshing with the sun gears, and a planetary gear. A ring gear rotating mechanism fixed to the housing and rotating one of the ring gears;

According to this configuration, the relative rotation angle between the two rotors is much higher in operation reliability than the movable short-circuit iron type which operates by the balance between the centrifugal force and the delicate force between the springs described above. The combined field magnetic flux is controlled by using a planetary reduction gear mechanism that is less likely to be abnormally acted upon by external vibrations, etc., so it is extremely excellent in reliability and durability. Furthermore,
With a simple configuration in which one of the ring gears is rotated, a change in the relative rotation between the two rotors can be realized. Note that the other of the ring gears may be fixed to the housing.

According to a fifth aspect of the present invention, in the permanent magnet type rotating electric machine according to any one of the first to fourth aspects, the ring gear rotating mechanism of the rotor angle adjusting unit is driven during high-speed rotation or malfunction. And a control unit for reducing the field magnetic flux linked to the armature coil.

In this case, since the effective field flux is reduced during high-speed rotation, no excessive power generation voltage is generated. For example, the battery is fully charged, or the AC / DC bidirectional conversion circuit malfunctions. If the generated current cannot be sufficiently absorbed by the battery, a large open voltage is generated at the output end of the rotating electric machine, and the problem that this open voltage adversely affects the smoothing capacitor, the battery, and the AC / DC bidirectional conversion circuit can be prevented. .

In a preferred aspect, the stator (armature coil) exchanges power with the AC / DC bidirectional conversion circuit, and the rotor angle adjustment unit is driven such that the induced voltage of the armature coil becomes equal to or less than a predetermined threshold value. You.

With this configuration, an excessive armature coil induced voltage is not generated due to disconnection of the DC terminal of the AC / DC bidirectional conversion circuit or malfunction of the semiconductor switching element of the AC / DC bidirectional conversion circuit. An adverse effect can be prevented from being exerted over a long period of time on insulation of a direction conversion circuit and a smoothing capacitor connected between a pair of DC terminals thereof, and reliability can be improved.

[0024]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the following examples.

[0025]

Embodiment 1 An example of a vehicular rotating electrical machine using the permanent magnet type rotating electrical machine of the present invention will be described below with reference to FIG. 1 which is a schematic axial sectional view.

(Configuration) 1 is a stator, 2 is a rotor, 3 is a motor housing, 4 is a gear housing, and 5 is an output shaft.

The stator 1 is formed by winding an armature winding (stater coil) 302 around a stator core 301 made of laminated electromagnetic steel sheets, and is fixed to the inner peripheral surface of the motor housing 3.

The rotor 2 includes a radially outer rotor 100 and a radially inner rotor 20 accommodated inside the radially outer rotor 100.
0. The radial inner rotor 200 is the shaft 20
1, and both end surfaces of the radially outer rotor 100 are fixed to flange-like members 106 and 101. The flange member 106 is supported by the motor housing 3 via a bearing 402.

The radial outer rotor 100 comprises a cylindrical iron core 102 made of laminated electromagnetic steel sheets, and a permanent magnet 103 embedded inside the iron core 102. FIG. 2 shows a cross section of the rotor 2 taken along the line AA.

Eight magnet insertion holes 104 are provided in the outer periphery of the iron core 102 in the axial direction.
Eight permanent magnets 103 magnetized in the thickness direction (radial direction when the rotor is inserted) are inserted alternately in polarity. The permanent magnet 103 is composed of permanent magnets 103a and 103b whose polar faces are opposite to each other. Each magnet insertion hole 10
Both ends of 4 extend in the radial direction to reduce the leakage magnetic flux. Reference numeral 105 denotes eight grooves which are recessed at equal pitches on the inner peripheral surface of the iron core 102 and extend in the axial direction.
05 also reduces the leakage flux.

The radial inner rotor 200 has an iron core 202 made of laminated electromagnetic steel sheets fitted and fixed to a shaft 201. The iron core 202 is a so-called magnetic salient pole type rotor as shown in FIG. . More specifically, the iron core 202
Are a total of five partial arc-shaped grooves 20 having different diameters.
The outer circumference of the iron core 202 has eight circular arc groups at the same pitch in the circumferential direction, in which arcs 3a, 203b, 203c, 203d, and 203e are coaxially arranged. Partially arcuate grooves 203a, 203b, 2
Both ends of 03c, 203d and 203e reach near the outer peripheral surface of the iron core 202. As a result, the center of the magnetic salient pole portion (easy magnetization region) is between the two arc groups adjacent in the circumferential direction, and the circumferential central portion of each magnetic salient pole portion is the magnetic concave pole portion (hard magnetization region). .

The cylindrical shaft portion of the flange-like member 101 is supported by the motor housing 3 via a bearing 401.
The shaft 201 is rotatably supported via a bearing metal 403. A shaft portion of the flange-like member 101 and a front end portion of the shaft 201 which are coaxially arranged in the radial direction penetrate the mechanical seal 902 and protrude into the gear housing 4.

The gear housing 4 includes the motor housing 3
A gear chamber into which lubricating oil is injected to a predetermined level is formed, and a planetary reduction gear mechanism is accommodated in the gear chamber.

Shaft of flange-like member 101 and shaft 2
Sun gears 502 and 503 are fixed to the front end portion of the planetary gear 5 so as to be close to each other in the axial direction.
The sun gear 503 meshes with the ring gear 507 through the planetary gear 505 through the ring gear 506 through the ring gear 504. The planetary gears 504 and 505 are bearings 509,
It is rotatably supported on a common shaft (support shaft) 508 via 510. The shaft 508 is fixed to a large rear end portion of the shaft (input / output shaft) 5, and the front end shaft portion of the shaft 5 is rotatably supported by the gear housing 4 via a bearing 405, penetrates through the mechanical seal 901, and is externally mounted. It protrudes.

The ring gear 506 is fixed to the inner peripheral surface of the gear housing 4, and the ring gear 507 is rotatably supported on the inner peripheral surface of the gear housing 4 via a bearing 511. The front surface of the ring gear 507 has a gear portion 512 that meshes with a worm gear 701 provided on an output shaft of a rotary actuator 700 provided on the gear housing 4.

A rotation position sensor 801 senses the rotation angle position of the radially outer rotor 100.

(Basic operation) When the outer rotor 100 rotates in synchronization with the rotating magnetic field of the armature coil 302, the sun gear 503 of the inner rotor 200 also has a planetary gear 505.
And rotate at the same speed. When the worm gear 701 of the rotary actuator 700 is rotated to rotate the ring gear (internal gear) 507, the sun gear 503 is rotated accordingly, and the radial inner rotor 200 is relatively rotated with respect to the radial outer rotor 100. be able to. By adjusting the relative angle between the two rotors 100 and 200, the amount of the effective field magnetic flux which forms the permanent magnet 103 and interlinks with the stator coil (armature coil) 302 is adjusted.

For example, FIG. 2 shows the relative angular position (easy magnetization position) where the radial inner rotor 200 most easily allows the field magnetic flux of the radial outer rotor 100 to pass, and the effective field magnetic flux becomes maximum. FIG. 3 shows that the radial inner rotor 200 is
The relative field position (easy magnetization position) where the field flux is hardly passed through, and the effective field flux is minimized. That is, the adjustment of the effective field magnetic flux by adjusting the relative angle between the rotors 100 and 200 can be used for adjusting the torque and the generated voltage. Note that an inexpensive soft iron core may be used for the iron core 202 instead of an electromagnetic steel plate.

The effect of the mechanical field flux control according to this embodiment will be described below with reference to FIGS. Figure 1
0, in FIG. 11, the numerical value indicated by% indicates the efficiency of the permanent magnet type rotating electric machine.

In a synchronous machine having a permanent magnet type rotating electric machine, ie, a magnet rotor, for controlling torque, a torque current and a field flux control current having a phase difference of π / 2 from the torque current are controlled independently. Controls the torque, and the latter controls the field flux (magnet flux) of the permanent magnet to the normally weaker side. As is well known, since the induced voltage of the stator coil increases during high-speed rotation to make it difficult for the armature current to flow, as is well known, the magnet flux is reduced by the field flux of the field flux control current in the opposite direction. (Magnetic flux) to reduce the composite field magnetic flux. In the present embodiment shown in FIG. 11, the relative angle between the two rotors is continuously adjusted according to the number of rotations, and the magnetic resistance of the magnetic circuit through which the field magnetic flux flows increases as the number of rotations increases. Therefore, the same torque-speed characteristics as in FIG. 10 can be realized even if the amount of current application of the conventional field-weakening control current shown in FIG. 10 is reduced. The ability to reduce the field-weakening flux control current is extremely advantageous in terms of suppressing temperature rise and improving efficiency because copper loss and power loss of the armature coil can be reduced. The rotation control of the radial inner rotor 200 may be continuously adjusted according to the number of rotations as described above, or may be controlled stepwise. However, in either case, even if an open induced voltage is generated in the armature coil due to a malfunction of the control circuit, the radially inner rotor is maintained so that the open induced voltage does not cause a problem in the circuit system. It is important to set the relationship between the rotation angle of 200 and the number of rotations. In this setting, the detected rotation speed is input to the controller, and the above relationship is stored in the controller in the form of digital or analog information or fixed in the form of a circuit structure. What is necessary is just to extract the rotation angle.

FIG. 13 shows an example of this type of control device.
This control device can be typically executed by a controller 4000 with a built-in microcomputer in the circuit of FIG. 9 described later. First, the number of rotations is detected (S200), and the number of rotations of the radially inner rotor 200 according to the number of rotations is searched from a map (S20).
2) The inverter 2000 may be controlled so that the rotation speed of the radial inner rotor 200 matches the rotation speed obtained from the map. Since this type of control device itself is a well-known matter in the electric control technology, further detailed description is omitted.
Of course, the relationship between the rotation angle and the number of rotations can be set stepwise to simplify the circuit structure.

In the above-described permanent magnet type rotating electric machine of this embodiment, the effective field magnetic flux can be adjusted by controlling the rotation of one of the ring gears of the parallel planetary reduction gear mechanism. It is not necessary to perform the field weakening even in several regions, or the current can be reduced even when it is performed. FIG. 8 shows the relationship between the rotation speed and the induced voltage (power generation voltage).

(Modification) FIGS. 4 and 5 show modifications of the radially inner rotor 200. FIG. In this variation, the radial inner rotor 2
Reference numeral 00 denotes a magnetic salient pole type rotor, which is the same as in the first embodiment.
a has a structure having four radially outward projections.

FIG. 4 shows the relative angular position (easy magnetization position) where the radial inner rotor 200 most easily passes the field magnetic flux of the radial outer rotor 100, and the effective field magnetic flux becomes maximum. FIG.
Indicates a relative angle position (easy magnetization position) where the radial inner rotor 200 is most difficult to pass the field magnetic flux of the radial outer rotor 100, and the effective field magnetic flux is minimized. That is, both rotors 1
The adjustment of the effective field flux by adjusting the relative angle between 00 and 200 can be used for adjusting the torque and the generated voltage.
It should be noted that an inexpensive soft iron core may be used for the iron core 202a instead of an electromagnetic steel plate.

In this modified embodiment, the same effects as in the first embodiment can be obtained.

[0046]

Embodiment 2 Another embodiment of the present invention will be described below with reference to FIGS. However, components having the same main functions as those of the first embodiment may be denoted by the same reference numerals.

This embodiment is characterized in that the radial inner rotor 200 shown in FIGS. 1 to 3 is changed from a magnetic salient pole type rotor to a magnet rotor. This radial inner rotor 200 is
02 and a permanent magnet 205 embedded in the iron core 202.

Eight magnet insertion holes 204 are provided in the outer peripheral portion of the iron core 202 in the axial direction.
Eight permanent magnets 205 magnetized in the thickness direction (radial direction when the rotor is inserted) are inserted alternately in polarity. The permanent magnet 205 is composed of permanent magnets 205a and 205b whose polar faces are opposite to each other.

FIG. 6 shows relative angular positions (easy magnetization positions) where the radial inner rotor 200 most easily allows the field flux of the radial outer rotor 100 to pass.

The N pole surface on the outer peripheral side of the permanent magnet 205a of the radial inner rotor 200 is
It faces the S pole surface on the inner peripheral side of a through the iron cores 102 and 202. The S pole surface on the outer peripheral side of the permanent magnet 205b of the radially inner rotor 200 faces the N pole surface on the inner peripheral side of the permanent magnet 103b of the radially outer rotor 100 via the iron cores 102 and 202.
Therefore, the effective field flux is maximized.

FIG. 7 shows a relative angular position (easy magnetization position) where the radial inner rotor 200 hardly allows the field flux of the radial outer rotor 100 to pass.

The N pole surface on the outer peripheral side of the permanent magnet 205a of the radial inner rotor 200 is
It faces the N pole face on the inner peripheral side of b through the iron cores 102 and 202. The S pole face on the outer circumference side of the permanent magnet 205b of the radially inner rotor 200 faces the S pole face on the inner circumference side of the permanent magnet 103a of the radially outer rotor 100 via the iron cores 102 and 202.
Therefore, the effective field flux is minimized.

In this modified embodiment, the same effect as in the first embodiment can be obtained.

[0054]

Embodiment 3 An embodiment in which the rotating electric machine of Embodiment 1 or 2 is used as a traveling motor of an electric vehicle, a hybrid electric vehicle or a fuel cell vehicle will be described with reference to a block circuit diagram shown in FIG.

Reference numeral 1000 denotes the rotating electric machine described in the first or second embodiment, reference numeral 2000 denotes a three-phase inverter circuit (an AC / DC bidirectional conversion circuit) for controlling power transfer between the rotary machine 1000 and the battery 3000, and reference numeral 700 denotes a rotating electric machine. A rotary actuator 801 is a rotary position sensor for detecting the rotor position of the rotating machine. 4000 is a controller for controlling the inverter 2000 based on a rotor angle from the rotary position sensor 801 and an external torque command. The connected smoothing capacitor.

It is assumed that the control of the inverter 2000 performed by the controller 4000 during high-speed running is malfunctioning and that the battery 3000 cannot fully absorb current due to a full charge or the like.

In the case of a normal synchronous machine, the fact that the armature current does not flow means that the three-phase output terminal of the armature coil is open. The voltage is almost equal to the open-circuit voltage.
0 semiconductor switching elements and smoothing capacitors 500
0 and the battery 3000 are applied throughout the high-speed running period, and inevitably affect them. This is,
This is a serious problem that has conventionally been difficult to solve when a magnet-type rotor synchronous machine is used as a vehicle traveling motor.

On the other hand, in the present embodiment, the rotating machine 100
The generated voltage of 0 is used to adjust the relative angle of the rotor.
This generated voltage can be reduced by the relative angle control of 0.

As a result, the required withstand voltage of inverter 2000 and smoothing capacitor 5000 can be reduced, and overcharge of battery 3000 can be prevented.

(Control Example 1) FIG. 12 shows an example of one rotation control of the radial inner rotor 200 by the controller 4000.

In FIG. 12, first, in a high-speed operation state in which the rotation speed exceeds a predetermined value, it is detected whether or not the inverter control is defective (S100). If so, it is checked whether or not the battery is fully charged (S102). If there is radial inner rotor 200
Is controlled so that the effective field flux is minimized (S
104).

In this way, even if the inverter 2000 suddenly malfunctions due to a failure of a switching element constituting the inverter 2000 during a high-speed operation, a high induced voltage is applied to the battery 3000 or the smoothing capacitor 5000 and the The life is not shortened.

[Brief description of the drawings]

FIG. 1 is a schematic axial sectional view of a permanent magnet type rotating electric machine according to a first embodiment.

FIG. 2 is a schematic cross-sectional view taken along line AA of the permanent magnet type rotating electric machine of FIG.

FIG. 3 is a schematic cross-sectional view of the permanent magnet type rotary electric machine of FIG.

4 is a schematic cross-sectional view taken along line AA of a modification of the permanent magnet type rotating electric machine (in a state where the field flux is maximum) in FIG.

FIG. 5 is a schematic sectional view taken along line AA of a modification of the permanent magnet type rotating electric machine (in a state where the field magnetic flux is minimum) of FIG. 1;

FIG. 6 is a schematic cross-sectional view of another embodiment of the permanent magnet type rotating electric machine (in a state where the field magnetic flux is maximum) of FIG.

FIG. 7 is a schematic cross-sectional view taken along line AA of another embodiment of the permanent magnet type rotating electric machine (in a state where the field magnetic flux is minimum) in FIG.

8 is a characteristic diagram showing a relationship between a rotation speed of the permanent magnet type rotating electric machine (in a state where the field magnetic flux is in a minimum state) and an armature coil induced voltage in FIG.

9 is a block circuit diagram illustrating a control device that uses the permanent magnet type rotating electric machine of FIG. 1 as a vehicle traveling motor.

FIG. 10 is a torque-rotation speed characteristic diagram of a conventional permanent magnet type rotating electric machine.

FIG. 11 is a torque-rotation speed characteristic diagram of the permanent magnet type rotating electric machine of FIG. 1;

FIG. 12 is a flowchart illustrating an example of control by the control device of FIG. 9;

FIG. 13 is a flowchart illustrating another example of control by the control device of FIG. 9;

[Explanation of symbols]

 100: radial outer rotor 200: radial inner rotor 700: rotary actuator (rotor angle adjustment unit)

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Claims (5)

[Claims] A stator having an armature core wound with an armature coil and fixed to a housing; a stator having a plurality of permanent magnets and rotating while facing an inner peripheral surface of the armature core; A permanent magnet type rotating electric machine comprising: a rotor having a permanent magnet forming a field magnetic flux interlinking with the armature coil; and a rotatable cylindrical outer rotor. A radially inner rotor having an outer peripheral surface facing an inner peripheral surface of the radially outer rotor and rotatably disposed to adjust the field magnetic flux by a relative angular position with respect to the radially outer rotor; And a rotor angle adjusting unit for mechanically adjusting the relative angular position of the permanent magnet type rotating electric machine. 2. The permanent magnet type rotating electric machine according to claim 1, wherein said radially inner rotor comprises a magnetic salient pole type rotor forming a yoke as a part of a magnetic circuit through which said field magnetic flux flows. Permanent magnet type rotating electric machine. 3. The permanent magnet type rotating electric machine according to claim 1, wherein the permanent magnet of the radially outer rotor has a plurality of magnetic poles alternately formed in a circumferential direction on inner and outer peripheral surfaces of the radially outer rotor, respectively. The permanent magnet, wherein the radially inner rotor has a plurality of magnetic poles alternately formed in a circumferential direction on an outer peripheral surface of the radially inner rotor, and the magnetic poles of both rotors are formed at the same pitch in the circumferential direction. Type rotating electric machine. 4. The permanent magnet type rotating electric machine according to claim 1, wherein said rotor angle adjusting section rotates on the same support shaft as a sun gear individually fixed to said rotors. A planetary gear that is freely supported and individually meshes with the two sun gears; a pair of ring gears that individually meshes with the two planetary gears; and a ring gear rotation mechanism that is fixed to the housing and rotates one of the two ring gears. And a permanent magnet type rotating electric machine having: 5. The permanent magnet type rotating electric machine according to claim 1, wherein the ring gear rotating mechanism of the rotor angle adjusting unit is driven to rotate the armature coil during high-speed rotation or malfunction. A permanent magnet type rotating electric machine comprising a control unit for reducing the interlinking field magnetic flux.