JPH0935958A - Energy converter - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an energy converter, which may be formed by mechanically simple constitution without requiring a rotary section and is used for power generation. SOLUTION: This device has a magnetic core member 21, an output coil 3 wound on the magnetic core member, permanent magnets 4, 7 for supply the magnetic core member 21 with magnetic flux ΦA, ΦB interlinked with the output coil 3, and controllers 6, 9 for periodically changing the quantity of magnetic flux from the permanent magnets 4, 7 to the magnetic core member 21. Since the quantity of magnetic flux passing through the magnetic core member in magnetic flux from the permanent magnets is changed with time by the controllers and the quantity of magnetic flux interlinked with the output coil is altered with time, voltage corresponding to the change of the output coil is extracted from the output out.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an energy conversion device, and more particularly, to a device capable of extracting electric power by utilizing a magnetic flux from a permanent magnet.

[0002]

2. Description of the Related Art A conventional power generator using a magnetic field of a permanent magnet or an electromagnet uses the Fleming's right-hand rule, and rotates a rotor in a magnetic field created by the permanent magnet or the electromagnet, thereby rotating the rotor. The energy conversion device is configured to generate an electromotive force by electromagnetic induction in a coil conductor provided in the child.

[0003]

Therefore, the conventional energy conversion device of this type for the purpose of power generation requires a mechanical rotation mechanism, and therefore has a complicated structure and a motion for rotating the rotor. Energy must be supplied from the outside, and when viewed as a power generation system, there are many mechanical elements and it is difficult to miniaturize, and there are various problems such as the installation location being limited due to the noise accompanying rotation. Have a point.

The object of the present invention is therefore to provide an energy conversion device for power generation which does not require a rotating part and which requires a mechanically simple construction, which can solve the abovementioned problems of the prior art. is there.

[0005]

The features of the present invention for solving the above-mentioned problems include a magnetic core member, an output coil wound around the magnetic core member, and the output coil and the chain connected to the magnetic core member. It is provided with a permanent magnet for supplying intersecting magnetic flux and a controller for periodically changing the amount of magnetic flux supplied from the permanent magnet to the magnetic core member.

In order to supply the magnetic flux from the permanent magnet to the magnetic core member, an appropriate magnetic path member is provided between the permanent magnet and the magnetic core member, whereby the magnetic flux from the permanent magnet is efficiently supplied to the magnetic core member. can do. Further, the controller can be configured as a means for bypassing a part or all of the magnetic flux emitted from the permanent magnet without passing through the magnetic core member.
By configuring the controller as, for example, an electromagnet, incorporating the magnetic core of the electromagnet into the device as a magnetic flux bypass passage of the magnetic core member when viewed from the permanent magnet, and controlling the direction of the current flowing through the coil wound around this magnetic core. , Or by controlling the direction and magnitude of the current, the amount of the magnetic flux bypassed to the magnetic core from the magnetic flux from the permanent magnet is changed with time, preferably at a constant cycle, whereby the permanent magnet is changed. It is possible to change the amount of magnetic flux passing through the magnetic core member of the magnetic flux emitted from

When the amount of the magnetic flux passing through the magnetic core member changes with the passage of time in this way, the amount of the magnetic flux interlinking with the output coil eventually changes with the passage of time, and the change from the output coil. It is possible to extract a voltage corresponding to and to supply power to an appropriate load.

Therefore, when a sinusoidal AC voltage is applied to the coil of the electromagnet, the magnetic polarity of the magnetic core of the electromagnet changes at a constant cycle, and a voltage corresponding to this change can be taken out from the output coil. . When the frequency of the AC voltage supplied to the electromagnet is increased, the value of L for obtaining a predetermined Φ _m is small due to the relationship of Φ _m ∝ωL, and the device can be downsized.

Another feature of the present invention for solving the above-mentioned problems is to control the permanent magnet and its magnetic flux so that the sinusoidal AC signal can be taken out from the output coil in the above-mentioned configuration. This is because two sets of a controller and a controller are provided, and each of them is operated with a phase difference of 180 degrees to obtain a sine wave output. That is, a magnetic core member, an output coil wound around the magnetic core member, a first permanent magnet for supplying to the magnetic core member a magnetic flux interlinking with the output coil in a first direction, A second permanent magnet for supplying a magnetic flux interlinking with the output coil in a magnetic core member in a second direction opposite to the first direction, and from the first permanent magnet to the magnetic core member. A first controller for changing the amount of magnetic flux supplied, and the second controller
And a second controller for changing the amount of magnetic flux supplied from the permanent magnet to the magnetic core member.

The direction of the magnetic flux that comes out of the first permanent magnet and passes through the magnetic core member and links with the output coil is opposite to the direction of the magnetic flux that comes out of the second permanent magnet and passes through the magnetic core member and links with the output coil. Since one of the first permanent magnets has one magnetic pole end, the one end of the first permanent magnet is arranged close to or in close contact with one end of the magnetic core member.
The other magnetic pole end of the permanent magnet may be arranged close to or in close contact with the other end of the magnetic core member. In this case, an appropriate magnetic member is arranged between the other magnetic pole end of the first permanent magnet and the other end of the magnetic core member, so that almost all of the magnetic flux from the first permanent magnet is magnetic core. It is desirable that the member can be supplied to the member. The same is true between the other magnetic pole end of the second permanent magnet and the one end of the magnetic needle member.

The first controller can be constructed by using an electromagnet formed by winding a coil around a magnetic core, for example. In this case, the magnetic core of the electromagnet is formed so as to form a bypass magnetic path of the magnetic path formed by the magnetic core member when viewed from the first permanent magnet.
Can be installed close to or close to one end of the permanent magnet,
The amount of magnetic flux supplied from the first permanent magnet to the magnetic core member can be controlled by controlling the direction and strength of the current flowing through the coil. However, if the current flowing through the coil is an alternating current of a predetermined frequency, the direction and strength of the current flowing through the coil will change periodically, so that the first permanent magnet interlinking with the output coil through the magnetic core member The magnetic flux will also change in a cycle according to the alternating current.

The second controller can also be constructed by using an electromagnet formed by winding a coil around a magnetic core. The magnetic core of the electromagnet as the second controller is close to or in close contact with part of the second permanent magnet so as to form a bypass magnetic path of the magnetic path formed by the magnetic core member when viewed from the second permanent magnet. The amount of magnetic flux supplied from the second permanent magnet to the magnetic core member can be controlled by controlling the direction and strength of the current flowing through the corresponding coil. Also in this case, the first
As in the case of the controller, if the current flowing through the coil is an alternating current of a specified frequency, the direction and strength of the current flowing through the coil will change periodically, so the output coil will be linked through the magnetic core member. The magnetic flux from the first permanent magnet is also changed in a cycle according to the AC voltage.

As can be seen from the above description, when sinusoidal AC currents from the same AC power supply are supplied to the coils of the first controller and the coils of the second controller in opposite phases, for example, first and second permanent magnets are provided. Each magnetic flux supplied from the magnet to the magnetic core member increases or decreases in opposite phases with a predetermined periodic relationship, and a sinusoidal AC voltage can be taken out from the output coil.

Further, in order to effectively supply the magnetic flux from the first and second permanent magnets to the magnetic core member, it is desirable to excite and magnetize each magnetic member forming a required magnetic path. This magnetization preferably changes in response to changes in the magnetic flux from each permanent magnet passing through it. Such magnetization facilitates the magnetic flux from each permanent magnet to pass through the corresponding magnetic path.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

FIG. 1 is a diagram showing a configuration of a power generation device 1 configured as an energy conversion device according to the present invention. In the power generation device 1, reference numeral 2 is a magnetic core member having a laminated structure of thin plate permalloys, and the magnetic core member 2 is integrally formed at a columnar portion 21 forming a main magnetic path and at each end of the columnar portion 21. It is formed as an H-shaped magnetic core member. An output coil 3 is wound around the columnar portion 21, and an AC voltage is output from the output coil 3 as described later.

In order to supply the magnetic flux in the direction of arrow A interlinking the output coil 3 to the columnar portion 21 of the magnetic core member 2, the branch portion 22 is provided.
The end face 4A of the N magnetic pole of the prismatic first permanent magnet 4 is provided in close contact with the one end face 22A thereof, and the branch portion 22 and the first permanent magnet 4 are firmly connected by an appropriate connecting means. There is. To provide a magnetic path for the magnetic flux, which has exited from the N magnetic pole of the first permanent magnet 4 and has passed through the columnar portion 21 of the magnetic core member 2 in the direction of arrow A, to return from the one end face 23A of the other branch portion 23 to the S magnetic pole. , The end surface 4B of the S magnetic pole of the first permanent magnet 4
And the one end surface 23A of the branch portion 23 between the first magnetic path member 5
Is provided. In the configuration shown in FIG. 1, the first magnetic path member 5 is formed as an L-shaped member made of permalloy, and is brought into close contact with the end surface 4B of the first permanent magnet 4 and the one end surface 23A of the branch portion 23 as shown. It is fixed by appropriate means.

The columnar portion 2 extends from the N magnetic pole of the first permanent magnet 4.
A first electromagnet 6 is provided as a magnetic flux controller between the N magnetic pole of the first permanent magnet 4 and the first magnetic path member 5 in order to control the amount of magnetic flux passing through the first magnetic pole member 1. The first electromagnet 6 is an electromagnet having a known structure in which a coil 62 is wound around a magnetic core 61 made of a magnetic material. In the structure of FIG.
It is configured to extend integrally from the magnetic path member 5. The magnetic core 61 forms a bypass magnetic path that is parallel to the magnetic path of the columnar portion 21 of the magnetic core member 2 when viewed from the N magnetic pole of the first permanent magnet 4.

Therefore, the magnetic core 6 viewed from the first permanent magnet 4 depends on the direction and magnitude of the exciting current flowing through the coil 62.
The magnetic resistance of 1 will change. That is, when the exciting current flows in the coil 62 in the direction indicated by the arrow X1, the one end portion 61A of the magnetic core 61 serves as the N magnetic pole, so that the magnetic flux from the N magnetic pole of the first permanent magnet 4 flows in the magnetic core 61. It becomes difficult to pass through, and the magnetic flux from the N magnetic pole of the first permanent magnet 4 does not pass through the columnar portion 21.
In the direction of arrow A so as to interlink with the output coil 3. On the other hand, when the exciting current flows in the coil 62 in the direction indicated by the arrow Y1, the one end portion 61A of the magnetic core 61 becomes the S magnetic pole, so that the magnetic flux from the N magnetic pole of the first permanent magnet 4 becomes the magnetic core 6.
1, the amount of magnetic flux passing through the columnar portion 21 decreases, and the magnetic flux in the direction of arrow A that links the output coil decreases. In this way, by adjusting the direction and magnitude of the exciting current flowing through the first electromagnet 6, the first permanent magnet 4
It is possible to control the amount of magnetic flux in the direction of arrow A that crosses the output coil 3 and crosses the output coil 3.

In the configuration of FIG. 1, since the magnetic flux in the direction of the arrow B interlinking with the output coil 3 is supplied to the columnar portion 21 of the magnetic core member 2, the second end portion 23B of the branch portion 23 has a prismatic second shape. The end face 7A of the N magnetic pole of the permanent magnet 7 is provided so as to be in close contact, and the branch portion 23 and the second permanent magnet 7 are firmly connected by an appropriate connecting means. The magnetic flux that has exited from the N magnetic pole of the second permanent magnet 7 and has passed through the columnar portion 21 of the magnetic core member 2 in the direction of arrow B provides a magnetic path for returning from the other end surface 22B of the branch portion 22 to the S magnetic pole. 2 permanent magnet 7
A second magnetic path member 8 is provided between the end surface 7B of the S magnetic pole and the other end surface 22B of the branch portion 22. In the configuration shown in FIG. 1, the second magnetic path member 8 is formed as an L-shaped member made of permalloy, and as in the case of the first magnetic path member 5, the end surface 7B and the other end surface 22B are closely attached as shown. It is fixed by an appropriate means.

The columnar portion 2 is projected from the N magnetic pole of the second permanent magnet 7.
A second electromagnet 9 is provided between the N magnetic pole of the second permanent magnet 7 and the second magnetic path member 8 in order to control the amount of the magnetic flux passing through the first magnet 1. The second electromagnet 9 is a magnetic core 9 made of a magnetic material.
This is an electromagnet having a well-known configuration in which a coil 92 is wound around 1. In the configuration of FIG. 1, the magnetic core 91 is configured to extend integrally from the second magnetic path member 8. The magnetic core 91 forms a bypass magnetic path that is parallel to the magnetic path of the columnar portion 21 of the magnetic core member 2 when viewed from the N magnetic pole of the second permanent magnet 9.

For this reason, the magnetic core 9 seen from the second permanent magnet 7 depends on the direction and magnitude of the exciting current flowing through the coil 92.
The magnetic resistance of 1 will change. That is, when the exciting current is flowing in the coil 92 in the direction indicated by the arrow X2, the one end portion 91A of the magnetic core 91 becomes the N magnetic pole, so that the magnetic flux from the N magnetic pole of the second permanent magnet 7 flows in the magnetic core 91. It becomes difficult to pass through, and the magnetic flux from the N magnetic pole of the second permanent magnet 7 is prevented from passing through the columnar portion 21.
In the direction of arrow B, and the output coil 3 is linked. On the other hand, when the exciting current flows in the coil 92 in the direction indicated by the arrow Y2, the one end portion 91 of the magnetic core 91 is
Since A is the S magnetic pole, the magnetic flux from the N magnetic pole of the second permanent magnet 7 easily passes through the magnetic core 91, the amount of the magnetic flux passing through the columnar portion 21 decreases, and the direction of the arrow B interlinking with the output coil. The magnetic flux toward is reduced. In this way, the second electromagnet 9
By adjusting the direction and magnitude of the exciting current returned to
The arrow B that goes out from the second permanent magnet 7 and links with the output coil 3
The amount of magnetic flux in the direction can be controlled.

Since the first and second electromagnets 6 and 9 periodically change the amount of magnetic flux that comes out from the corresponding permanent magnets 4 and 7 and links with the output coil 3, in this configuration example, the AC power source PW is used. The sinusoidal AC voltage U from is applied to the coils 62 and 92 in anti-phase. That is, the coils 62 and 92 are connected to the AC power supply PW so that when the exciting current flows in the coil 62 in the arrow X1 direction by the sine wave AC voltage U, the exciting current flows in the coil 92 in the arrow Y2 direction. There is.

As a result, the first electromagnet 6 and the second electromagnet 9 are excited by the sinusoidal AC voltage U from the AC power source PW, and the magnetic flux exiting the first permanent magnet 4 and passing through the columnar portion 21 in the arrow A direction. The amount of Φ _A changes substantially in accordance with the half-wave shape of the sinusoidal wave in the same cycle as the cycle of the sinusoidal AC voltage U, while the quantity of Φ _A exits the second permanent magnet 7 and moves the columnar portion 21 in the direction of arrow B. The amount of magnetic flux Φ _B passing through changes substantially in accordance with the remaining half-wave shape of the sine wave in the same cycle as the cycle of the sine wave AC voltage U. Therefore, the interlinkage magnetic flux in the output coil 3 is supplied as the magnetic fluxes Φ _A and Φ _B from the first and second permanent magnets 6 and 9, and moreover, the direction and amount of the interlinkage magnetic flux due to these magnetic fluxes Φ _A and Φ _B. And will change into a sine wave.
As a result, an AC voltage that changes in a sine wave shape is extracted from the output coil 3. As described above, since it is necessary to pass the magnetic flux Φ _A to the first permanent magnet 4 and the magnetic flux Φ _B to the second permanent magnet 7, the first permanent magnet 4 and the second permanent magnet 7 are magnetized respectively. It is desired that the resistance be low, and as these materials, high relative magnetic permeability, preferably 40
It is preferable to use a magnetic material of about 00 or more.
It is also effective to increase the cross-sectional area of each of the first and second permanent magnets 4 and 7 in order to reduce the magnetic resistance.

In the configuration shown in FIG. 1, the first magnetic path member 5,
Exciting coils C1 to C5 are wound around the branch portion 22, the columnar portion 21, the branch portion 23, and the second magnetic path member 8, respectively, and these exciting coils C1 to C5 are connected in series to form a sine wave alternating current. The voltage U is applied. The excitation of each exciting coil C1 to C5 is as follows. When one end 61A of the first electromagnet 6 has an N magnetic pole, the exciting coil C
1 has an end portion of the first exciting member 5 on the side of the first electromagnet 6 as an S magnetic pole, and the exciting coil C2 has an end surface 22A of the branch portion 22 as S.
Each is excited so as to form a magnetic pole. In the case of FIG. 1, since the winding directions of the exciting coils C1 and C2 are as shown in the drawing, the connection between the exciting coils 1 and C2 and the AC power source PW is as shown in the drawing.

The exciting coil C3 is for generating a magnetic flux in the same direction as the magnetic fluxes Φ _A and Φ _B passing through the columnar portion 22, and has the winding direction shown in FIG.

The exciting coil C4 is a magnetic core 9 of the second electromagnet 9.
When one end 91A of 1 is an S magnetic pole, the other end surface 23B of the branch portion 23 is an N magnetic pole, and at this time, the exciting coil C5 has an end portion of the second magnetic path member 8 on the second permanent magnet 7 side as an N magnetic pole. Each is excited to do.

As a result, in the exciting coils C1 to C5, the magnetic flux Φ _A generated by the first permanent magnet 4 is divided into the branch portion 22 and the columnar portion 2.
3 and the first magnetic path J1 composed of the first magnetic path member 5 are excited so that a magnetic flux in the same direction as that in the first magnetic path J1 is generated in synchronization with the magnetic flux control by the first electromagnet 6. By doing so, the magnetic flux control of the first permanent magnet 4 is efficiently executed. Similarly, the magnetic flux Φ due to the second permanent magnet 7
_{When B} passes through the branch portion 23, the columnar portion 23, the branch portion 22, and the second magnetic path J2 including the second magnetic path member 8, a magnetic flux in the same direction as that in the second magnetic path J2 is generated by the second electromagnet 9. Those are excited so as to be generated auxiliary in synchronism with the magnetic flux control, whereby the magnetic flux control of the second permanent magnet 7 is efficiently executed.

As described above, most of the magnetic flux interlinking with the output coil 3 is from the first and second permanent magnets 4 and 7, and these magnetic fluxes are generated by using the first and second electromagnets 6 and 9. The sinusoidal AC voltage E _O can be taken out from the output coil by controlling and changing the interlinkage magnetic flux of the output coil 3 as described above. The exciting coils C1 to C5 are not always necessary and can be omitted.

In the above, in order to obtain a sinusoidal AC voltage from the output coil 3, a sinusoidal AC voltage is applied in reverse phase to the first and second electromagnets 6 and 9 which respectively serve as controllers, and the corresponding permanent magnets are applied. The magnetic flux from the magnet was controlled. However, particularly when it is not necessary to obtain the sinusoidal AC voltage from the output coil 3, the exciting currents to the first and second electromagnets 6 and 9 are not limited to this, and for example, the DC voltage is alternately applied in the opposite phase. It may be configured or the like.

By the way, the magnetic flux number Φ which determines the magnetic field strength of the first and second electromagnets 6 and 9 necessary for controlling the magnetic flux from the first and second permanent magnets 4 and 7 is determined by the coil 62,
Since it is proportional to the product of the number of turns N of 92 and the current value I flowing therethrough, Φ∝I × N. Since the maximum value of the number of magnetic fluxes Φ required for controlling the magnetic flux is a predetermined value, the value of the current value I for excitation can be made small by increasing the number of turns N of the coil of the electromagnet. By the way, since the energy supplied to each electromagnet is V × I when the excitation voltage is V, the DC energy can be reduced by decreasing the value of I, and the device is operated with extremely good efficiency. be able to. In the above embodiment, the case where the normal electromagnet is used has been described, but if superconducting magnets are used as the first and second electromagnets 6 and 9, the efficiency can be further improved.

Further, although this power generation device 1 utilizes the Fleming's right-hand rule, it generates a magnetic field that changes by controlling the magnetic flux of the permanent magnet, so there is no mechanical moving part, and noise is reduced. In addition to the above problem, it is not necessary to supply rotational energy, so that the device can be downsized. Furthermore, the first and second electromagnets 6,
By increasing the frequency of the AC voltage applied to 9, it is possible to reduce their size. The reason for this is as described above. In addition, the sine wave AC voltage U from the AC power supply PW
Alternatively, as shown in FIG. 1, a rectangular wave AC voltage U ′, an AC voltage U ″ in which a triangular wave is superimposed on a rectangular wave, or the like may be used. When the AC voltage U ″ or the like on which the triangular wave is superimposed is used, it can be used at a higher frequency than when the sine wave AC voltage U is used. When the sine wave AC voltage U is used, for example, when the operation at 20 to 30 Hz is possible,
If a rectangular wave AC voltage U ′ or an AC voltage U ″ in which a rectangular wave is superimposed on a rectangular wave is used, operation at about 50 Hz becomes possible.

In the above configuration example, the AC power source is used to excite the first and second electromagnets 6 and 9 in synchronism with each other in the opposite phase, but instead of this, the DC power source is used and one of the electromagnets is used. Is a positive polarity, the other electromagnet is a negative polarity and is applied with a DC power source to excite the first excitation mode, and one electromagnet is a negative polarity and the other electromagnet is a positive polarity and a DC power source is applied. As described above, it is also possible to realize mutual antiphase excitation by periodically switching the second excitation mode for excitation.

In the above description, the magnetic core member 2 is provided with two sets of devices for controlling the magnetic flux supply including the first permanent magnets 4 and the first electromagnets 6. However, the device for controlling the magnetic flux supply may be only one set, and FIG. 2 shows a configuration diagram showing an embodiment in this case.

The power generator 100 according to the present invention shown in FIG.
Is substantially the same as the generator 1 shown in FIG. 1 with the second permanent magnet 7, the second magnetic path member 8 and the second electromagnet 9 removed. Therefore, in each part of FIG. 2, parts corresponding to those of FIG. 1 are designated by the same reference numerals. The operation of the power generation device 100 is similar to that of this part in FIG. 1, and a pulsed voltage is obtained from the output coil 3. Even in this case, the exciting coil C
1, C2 and C3 can be omitted. Further, the description of the first permanent magnet 4 and the description of the waveform and frequency of the AC voltage from the AC power supply PW regarding the device having the configuration illustrated in FIG. 1 are directly applied to the power generation device 100 illustrated in FIG. 2. be able to.

In FIG. 3, power generators 1-1, 1-2, and 1-3 having the same structure as the power generator 1 shown in FIG. 1 are used, and a-phase sinusoidal AC voltage of three-phase AC voltage, The b-phase sine wave AC voltage and the c-phase sine wave AC voltage are supplied to the respective power generating devices
1, 1-2, 1-3 are applied instead of the sine wave AC voltage of FIG. 1, and these power generation devices 1-1, 1-2, 1-
An example of the embodiment of the power generator according to the present invention is shown in which the sine wave AC voltage from each of the output coils 3-1, 3-2, 3-3 of 3 is taken out as one set of three-phase AC output voltage. Has been done.

[0037]

According to the present invention, since the magnetic field can be periodically changed without the need for a rotating mechanism, the problem of noise does not occur and the miniaturization of the device can be facilitated. Can be planned.

Further, since the magnetic field is changed by controlling the magnetic flux of the permanent magnet, the energy required for this purpose is small, and therefore an energy conversion device for power generation with high efficiency can be realized.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an embodiment of an energy conversion device according to the present invention.

FIG. 2 is a configuration diagram showing another embodiment of the energy conversion device according to the present invention.

FIG. 3 is a configuration diagram showing still another embodiment of the energy conversion device according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Generator 2 Magnetic core member 3 Output coil 4 1st permanent magnet 5 1st magnetic path member 6 1st electromagnet 7 2nd permanent magnet 8 2nd magnetic path member 9 2nd electromagnet 21 Columnar part 61, 91 Magnetic core 62, 92 coils

Claims (2)

[Claims] 1. A magnetic core member, an output coil wound around the magnetic core member, a permanent magnet for supplying a magnetic flux interlinking with the output coil to the magnetic core member, and the permanent magnet to An energy conversion device, comprising: a controller for periodically changing the amount of magnetic flux supplied to the magnetic core member. 2. A magnetic core member, an output coil wound around the magnetic core member, and a first permanent magnet for supplying to the magnetic core member a magnetic flux interlinking with the output coil in a first direction. A second permanent magnet for supplying a magnetic flux interlinking with the output coil in the magnetic core member in a second direction opposite to the first direction; A first controller for changing the amount of magnetic flux supplied to the core member; and a second controller for changing the amount of magnetic flux supplied from the second permanent magnet to the magnetic core member. An energy conversion device characterized by being formed.