JP6837764B2 - Electromagnetic resonance rotary electric machine and composite rotary electric machine - Google Patents

Description

The present invention relates to electric motors, hybrid / electric vehicles, railroad vehicles in transportation systems, thermal power, hydraulic power, wind power, ocean current generators in energy systems, and home appliances such as unmanned airplanes, elevators, and air conditioners in social systems / home appliances. It is related to electromagnetic resonance rotary electric machines and composite rotary electric machines that can be used for motor-driven industrial equipment and the like.

In a rotating electric machine such as a motor or a generator, a three-phase coil through which a UVW three-phase alternating current flows is provided in a stator, and the coil is connected for each phase to form a three-phase winding. An external three-phase power conversion device is connected to the terminal of the rotary electric machine having the three-phase winding to perform energy conversion (that is, to operate).

By the way, the weight of aircraft and space equipment, as well as electric airplanes and unmanned aerial vehicles that can fly by solar power generation, greatly affects the performance. Therefore, the weight of the rotating electric machine such as the motor and the generator to be mounted can be reduced, but there is a limit to the weight loss without fundamentally changing the mechanical structure. The metal material accounts for the majority of the weight of the rotary electric machine, and the iron core accounts for the majority of the volume ratio. If the iron core is eliminated, the amount of metal material will be only the coil, and the weight can be dramatically reduced. However, since the iron core plays an important role of increasing the magnetic flux generated by the magnetomotive force and reducing the leakage flux to secure the effective magnetic flux, it is indispensable for the conventional rotary electric machine. Therefore, there is a limit to the weight reduction of the rotary electric machine having a conventional structure.

Similarly, moving objects such as mobile devices, robots, electric vehicles, and trains also carry the rotating electric machine mounted on them. Therefore, for example, when trying to raise or lower the arm of a robot, the motor incorporated in the elbow joint or the like rotates. Since energy is required not only to make the arm itself move up and down, but also to move the arm itself incorporating the rotary electric machine up and down, there is a limit to seeking responsiveness such as fast acceleration / deceleration against the mass.

On the other hand, induction type motors (induction machines) are most often used for general-purpose motors and large-capacity motors. However, the induction machine has a problem in principle. In an induction machine, the air gap length has a large effect on the output. It is desirable to narrow the air gap length in order to improve the characteristics of equipment such as output, efficiency, and power factor, but the air gap length can only be narrowed to a certain range in consideration of manufacturability such as mass productivity and variation in performance. .. Due to such an antinomy relationship, the induction machine has reached the performance limit in the conventional technology in terms of efficiency, power factor, and high output.

Hidetoshi Matsuki, Shunsuke Takahashi, "A Book on Wireless Power Supply Technology" (2011) Kasamatsu and Sakai, "Study of Coil for 3-Phase Wireless Power Transmission", 2015 IEEJ National Convention, 4-155 (2015) Sugazawa and Sakai, "Basic Research on Electromagnetic Resonant Motors", 2015 IEEJ Industrial Application Division Conference, 3-18 (2015) Kurs, A. et al., “Wireless Power Transfer via Strongly Coupled Magnetic Resonances”, Science, vol.317, No.5834, pp.83-86, 2007

The present invention has been made in view of such conventional technical problems, and induces a rotational force in the rotor by utilizing the electromagnetic resonance coupling that occurs between the stator winding and the rotor winding. Alternatively, on the contrary, it is an object of the present invention to provide a new electromagnetic resonance rotary electric machine, a composite rotary electric machine, and a rotary electric machine drive device that generate electric power on the stator side with respect to the rotation of the rotor.

In addition, a rotating electric machine that uses the electromagnetic resonance principle that can rotate such a rotor or generate electric power in the stator eliminates the iron core and makes it ultra-lightweight, and also increases the air gap of the inducer. It is an object of the present invention to provide an electromagnetic resonance rotary electric machine, a composite rotary electric machine, and a rotary electric machine drive device capable of achieving extremely high performance.

The present invention is characterized by an electromagnetic resonance rotary electric machine composed of a stator having a coil and a capacitor and a rotor having a coil and a capacitor.

Further, the present invention is composed of a stator having a winding and a capacitor connecting a plurality of coils and a rotor having a winding connecting a plurality of coils and a capacitor, and utilizes an electromagnetic resonance phenomenon. It is characterized by an electromagnetic resonance rotary electric machine that rotates the rotor or generates power in the stator by the rotation of the rotor.

The present invention, the stator and the inductance value and the capacitance value of such winding the electromagnetic field resonant state, the rotor is also the inductance value and the capacitance value of such winding the electromagnetic field resonance, and the wherein the electromagnetic resonance rotary electric machine as an electromagnetic field resonant frequency of the stator and the electromagnetic field resonant frequency of the rotor coincide.

Further, the present invention has an electromagnetic resonance rotating electric machine and an iron core composed of a stator having a winding and a capacitor connecting a plurality of coils and a rotor having a winding and a capacitor connecting a plurality of coils. It features a composite rotary electric machine equipped with a rotary electric machine.

According to the electromagnetic resonance rotating electric machine of the present invention, for example, power is transmitted from the stator to the rotor by an electromagnetic resonance phenomenon that can occur between relatively distant objects as in the resonance phenomenon in acoustics. A rotational force can be induced even if the air gap length between the rotor and the rotor is increased, and a high output can be obtained even with a large air gap length as an inducer.

Further, according to the present invention, since the principle is the electromagnetic resonance phenomenon, it is possible to eliminate the iron core which was conventionally indispensable for reducing a large amount of leakage flux and ensuring high magnetism. It was a metal material that occupied almost all of the volume-an ultra-lightweight rotary machine, a highly efficient induction rotary machine, and a composite rotary machine could be realized.

By mounting the electromagnetic resonance rotary electric machine of the present invention on an electric airplane or an unmanned airplane capable of flying by solar power generation, the weight of those devices can be reduced. Similarly, for mobile devices, robots, electric vehicles, trains, etc. Even in a moving body, the weight reduction can significantly reduce the energy required for operation and enable a quick response.

The principle explanatory drawing of the electromagnetic resonance rotary electric machine of embodiment of this invention. The circuit diagram of the electromagnetic resonance rotary electric machine of the said embodiment. Sectional drawing of the electromagnetic resonance rotary electric machine of the said embodiment. The enlarged sectional view of the main part of the electromagnetic resonance rotary electric machine of the said embodiment. Specification table of the electromagnetic resonance rotary electric machine of the above embodiment. Table of stator inductance value and capacitance value at each operating frequency of the electromagnetic resonance rotary electric machine of the said embodiment. Table of rotor inductance value and capacitance value at each operating frequency of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the frequency response characteristic of the electric power in the rotor of the electromagnetic resonance rotary electric machine of the said embodiment. The magnetic flux density distribution figure at each operating frequency of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the torque characteristic with respect to the slip at each operating frequency of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the output characteristic with respect to the slip at each operating frequency of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the stator current characteristic with respect to the slip at each operating frequency of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the rotor current characteristic with respect to the slip at each operating frequency of the electromagnetic resonance rotary electric machine of the said embodiment. The perspective view of the rotor in the modification of the electromagnetic resonance rotary electric machine of this invention. The principle explanatory drawing of the electromagnetic resonance rotary electric machine of the 2nd Embodiment of this invention. The circuit diagram of the electromagnetic resonance rotary electric machine of the said embodiment. Sectional drawing of the electromagnetic resonance rotary electric machine of the said embodiment. The enlarged sectional view of the main part of the electromagnetic resonance rotary electric machine of the said embodiment. Specification table of the electromagnetic resonance rotary electric machine of the above embodiment. The graph of the torque characteristic with respect to the slip of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the torque waveform (slip 0.3) of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the output characteristic with respect to the slip of the electromagnetic resonance rotary electric machine of the said embodiment. The distribution diagram of the magnetic flux density at the time of rotation at the slip 0.2 of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the rotor current characteristic with respect to the slip of the electromagnetic resonance rotary electric machine of the said embodiment. The graph of the active power characteristic with respect to the resonance frequency of the electromagnetic resonance rotary electric machine of the said embodiment. The perspective view of the electromagnetic resonance rotary electric machine (1/4) of the 3rd Embodiment of this invention. The distribution diagram of the magnetic flux density of the electromagnetic resonance rotary electric machine of the said embodiment. The block diagram of the electric motor drive device with respect to the electromagnetic resonance rotary electric machine of 4th Embodiment of this invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

First, the operating principle of the electromagnetic resonance rotary electric machine will be described. The electromagnetic resonance rotating electric machine uses electromagnetic resonance coupling to transmit electric power between the stator winding and the rotor winding, and generates electric power in the motor operation and electric power in the generator operation. It is a conversion device. The electromagnetic resonance rotary electric machine has no iron core and can be composed only of windings. Therefore, an ultra-lightweight rotary electric machine can be realized, and it may become a key technology for realizing an electric airplane and a solar cell airplane from a mobile device.

[What is an electromagnetic resonance rotary electric machine ]
The electromagnetic resonance rotary electric machine transmits power between the stator winding (primary winding) and the rotor winding (secondary winding) by the action of electromagnetic resonance coupling to perform energy conversion. The configuration and operating principle of the principle model of the electromagnetic resonance rotary electric machine 1 will be described with reference to FIGS. 1 and 2. Three-phase stator coils 11U, 11V, 11W are spatially arranged at 60 ° and 120 ° phase intervals. A rotating magnetic field is formed by the stator current of the stator winding 11 composed of the coils 11U, 11V, and 11W. Similarly, three-phase coils 21U, 21V, and 21W are arranged on the rotor 20 to bring them into a three-phase short-circuit state. The rotor winding 21 is composed of the coils 21U, 21V, and 21W of the rotor 20. Further, as shown in FIGS. 3 and 4, the normal stator core and the rotor core are eliminated to form a non-iron core, and as an actual structure, synthetic resin FRP is used as the stator structure 12 and the rotor structure 22, respectively. Coil 11U, 11V, 11W; 21U, 21V, 21W are fixed. However, if this is true even in the low frequency range, an iron core may be provided depending on the applied product (composite type rotary electric machine).

Further, as shown in FIGS. 1 and 2, the three-phase stator winding circuit and the rotor winding circuit are connected with resonance capacitors 13U, 13V, 13W; 23U, 23V, 23W, respectively, and have capacitances thereof. Have.

The mechanical configuration of the electromagnetic resonance rotary electric machine 1 of the embodiment will be described in detail with reference to FIGS. 3 and 4. The electromagnetic resonance rotary electric machine 1 is composed of a stator 10 and a rotor 20. The stator 10 is provided with a slot 14 in the stator structure 12 made of a reinforcing fiber resin (FRP), and coils 11U, 11V, 11W are inserted into each slot 14 of the stator structure 12, and a plurality of coils 11U, 11V, 11W are inserted. Capacitors 13U, 13V, 13W are connected to each of the three-phase stator windings 11 composed of coils 11U, 11V, and 11W to have capacitance. On the other hand, the rotor 20 of the electromagnetic resonance rotary electric machine 1 is provided with a slot 24 in the rotor structure 22 made of a reinforcing fiber resin (FRP), and the coils 21U and 21V are provided in each slot 24 of the rotor structure 22. , 21W is inserted, and capacitors 23U, 23V, 23W are connected to the three-phase rotor winding 21 composed of a plurality of coils 21U, 21V, 21W to give capacitance to each phase. A rotor 20 is arranged inside the stator 10, and an air gap 30 is formed between the rotor 20.

The inductance L and the capacitance C of the three-phase winding 21 of the stator 10 are set to values that resonate at a set frequency f. Similarly, the inductance L and the capacitance C of the three-phase winding 21 of the rotor 20 are set to values that resonate at the set frequency f. Further, the characteristics of the windings 11 and 21 and the capacitors 13 and 23 are set so that the oscillation frequency f of the stator 10 and the resonance frequency f of the rotor 20 substantially match. As a result, the stator 10 and the rotor 20 are brought into an electromagnetic resonance coupling state, and the electrical energy on the stator 10 side is transmitted as energy on the rotor 20 side. With such a configuration, the influence of the leakage flux is almost eliminated, so that power can be transmitted by electromagnetic field coupling even in the air-core state of the ironless core.

The characteristics of the electromagnetic resonance rotary electric machine having the above configuration were analyzed. The material settings for the stator core and rotor core were set to air for air core. The model of the electromagnetic resonance rotary electric machine is shown in FIGS. 3 and 4. The specifications of the model are shown in the table of FIG.

[Analysis and calculation of equipment constants]
In order for the rotating electric machine to be in the electromagnetic field resonance state at the drive frequency, it is necessary to determine the inductance L and the capacitance C of the three-phase winding, which are equipment constants. Then, in order to perform electromagnetic resonance coupling, it is necessary to resonate the stator 10 and the rotor 20 at the same frequency f. The inductance L was obtained by electromagnetic field analysis. The capacitor C is calculated from the inductance L and the drive frequency f obtained in the analysis according to the resonance conditions. The formulas for calculating the equipment constants are the following formulas (1)-(5).

Further, when analyzing the inductance L of the stator winding 11, the rotor winding 21 is set to air. In the analysis of the inductance L of the rotor winding 21, the stator winding 11 is set to air. As the analysis conditions, the three-phase power supply voltage V was 3000 V in amplitude, and the drive frequencies were 50 Hz, 100 Hz, 150 Hz, and 200 Hz. The drive frequency f was also performed on the order of kHz, but here, the characteristics at a low frequency will be described as an example.

The principle verification model used for the characteristic analysis is the specifications shown in the table of FIG. The specifications of the principle study model are the specifications of the motor using the design values of the general-purpose medium-capacity induction machine. The circuit of the principle model when the electromagnetic field analysis is performed is shown in FIGS. 1 and 2.

[Device constant analysis result]
The values calculated based on the device constant analysis show the inductance L and the capacitance C of the stator 10 in the table of FIG. 6, and the inductance L and the capacitance C of the rotor 20 in the table of FIG.

[Frequency response characteristics]
The frequency response analysis of the principle model was performed to understand the motor characteristics due to the electromagnetic resonance. The circuit models are shown in FIGS. 1 and 2, and the capacitors 13 and 23 having the capacitance C whose drive frequency f calculated by the device constant analysis is the resonance frequency are the circuit of the stator 10 and the circuit of the rotor 20. The circuit configuration is connected in series to each of the above.

As an analysis condition, the power supply voltage was set to an amplitude value of 3000 V. FIG. 8 shows the frequency response characteristics of the electric power in the rotor 20. Graphs C50, C100, C150, and C200 show the power with respect to the drive frequency in the rotary electric machine of the present invention when a capacitor having an electric capacity C value set to have a resonance frequency of 50 Hz, 100 Hz, 150 Hz, and 200 Hz is attached. It is a graph of a frequency response characteristic. It was confirmed that the maximum power was obtained in the vicinity of 50 Hz, 100 Hz, 150 Hz, and 200 Hz in which the drive frequency f was set as the resonance frequency. The maximum power was 32.7 kW for the motor set at the drive (resonance) frequency of 50 Hz, 70.3 kW for the motor set at 100 Hz, 75.6 kW for the motor set at 150 Hz, and 65.6 kW for the motor set at 200 Hz. Further, the electric power of the motor set at 50 Hz is less than half the electric power of the motor set to resonate at the other three frequencies. The motor with the 150 Hz setting provided the most power.

The magnetic flux density distributions of the magnetic fluxes at resonance at 50 Hz, 100 Hz, 150 Hz, and 200 Hz obtained during the frequency response analysis were examined and shown in FIG. At any frequency, it can be confirmed that the magnetic flux is coupled between the stator and the rotor, and it can be seen that the electromagnetic resonance state is reached.

[Driving characteristics]
The operating characteristics of the electromagnetic resonance motor during rotation show different characteristics from the conventional ones. Therefore, the transient response analysis of the principle verification model was performed to obtain the operating characteristics during rotation. The torque (s−T) characteristics with respect to the slip s obtained in the analysis are shown in FIG. From the (s—T) characteristics of FIG. 10, the torque of the motor set at 50 Hz is maximum when the slide s = 0.6, and the torque of the motors set at 100 Hz, 150 Hz, and 200 Hz is maximum when the slide s = 0.5. ing.

FIG. 11 shows the output characteristics for slip s. The motor set at 50 Hz has the maximum output when the slip s is 0.7, and the motors set at 100 Hz, 150 Hz, and 200 Hz each have the maximum output when the slip s is 0.6. The maximum output is small only for the motor set at 50 Hz, and the maximum output of the motors set at other frequencies is almost the same.

FIG. 12 shows the stator current characteristics with respect to the slip s, and the stator current increases as the slip s decreases. Further, FIG. 13 shows the rotor current characteristic with respect to the slide s, and it can be seen that the current has a characteristic change similar to the output characteristic of FIG. 11 with respect to the slide s.

From the above analysis results, it can be seen that a new principle rotating electric machine using electromagnetic resonance coupling, that is, an electromagnetic resonance rotating electric machine, can transmit electric power between the stator and the rotor.

In this way, according to the electromagnetic resonance rotary electric machine 1 of the present embodiment, the stator 10 is changed to the rotor 20 by an electromagnetic resonance phenomenon that can occur even between relatively distant objects as in the resonance phenomenon in acoustics, for example. Since electric power can be transmitted, a rotational force can be induced even if the gap length of the air gap 30 between the stator 10 and the rotor 20 is expanded, and a high output can be obtained even with a large air gap length as an inducer. Can be done. In addition, because it is based on the electromagnetic field resonance phenomenon, it is possible to eliminate the iron core that was conventionally indispensable for reducing a large amount of leakage flux and ensuring high magnetism-this iron core has conventionally taken most of the weight of a rotating electric machine. It was a metallic material and occupied almost all of the volume-an ultra-lightweight rotary electric machine and a highly efficient induction rotary electric machine can be realized. Since it is possible to achieve ultra-light weight and high efficiency, the weight of these devices can be reduced by mounting the electromagnetic resonance rotary electric machine 1 of the present embodiment on an electric airplane or an unmanned airplane capable of flying by solar power generation. In addition, even in moving objects such as mobile devices, robots, electric vehicles, and trains, the weight of the entire device can be reduced by mounting it, the energy required for operation can be significantly reduced, and quick response is possible.

Next, a modification of the electromagnetic resonance rotary electric machine of the present invention will be described.

(1) In the electromagnetic resonance rotary electric machine 1 of the first embodiment, the rotor 20 is configured as a cage rotor. The cage rotor 20 is manufactured by molding the conductor in the cage rotor 20 with a reinforcing fiber resin. The capacitor 23 is connected to the end ring side of the cage rotor 20. The structure of the stator 10 is the same as that of the first embodiment.

(2) Further, the capacitors 13; 23 can be replaced with the following configurations in addition to the capacitance electric components such as the capacitors. As shown in FIG. 14 (FIG. 14 shows the structure of the rotor 20, but the structure of the stator 10 is also the same), the FRP structure 12 of the stator 10 and the FRP structure of the rotor 20 are the same. Each of the 22 is divided in the axial direction, and a metal plate 17; 27 having a shape substantially matching the shape of the cut end of the divided bodies 12a; 22a is sandwiched between the divided bodies 12a, 12a; 22a, 22a. .. The sandwiching metal plates 17; 27 are (3n + 1: n are natural numbers). Then, one end of the coils 11U, 11V, 11W; 21U, 21V, 21W of each UVW phase is connected to n different metal plates 17; 27, and the other one metal plate at the end position is connected. By connecting the other ends of the UVW all-phase coils 11U, 11V, 11W; 21U, 21V, 21W to 27 in common, a conductive metal plate 17; 27 is connected between them, and the FRP division which is a structure and a dielectric is divided. It operates as a capacitor 15; 25 in which the body 12a; 22a is interposed. As a result, a resonance state is created between the inductance L of the stator winding 11 and the rotor winding 21 and the capacitance C of the capacitors 15 and 25.

<Second Embodiment>
The electromagnetic resonance rotary electric machine 101 of the second embodiment will be described with reference to FIGS. 15 to 18. As shown in FIGS. 15 and 16, the stator 110 is spatially arranged with three-phase stator coils 111U, 111V, 111W at a phase interval of 60 ° and 120 °. A rotating magnetic field is formed by the stator current of the stator winding 111 composed of the coils 111U, 111V, and 111W. Similarly, the three-phase coils 121U, 121V, and 121W are arranged on the rotor 120 to bring them into a three-phase short-circuit state. The rotor winding 121 is composed of the coils 121U, 121V, 121W of these rotors 120. Further, as shown in FIGS. 17 and 18, the normal stator core and rotor core are eliminated to form a non-iron core, and as an actual structure, synthetic resin FRP is used as the stator structure 112 and the rotor structure 122, respectively. Coil 111U, 111V, 111W; 121U, 121V, 121W are fixed. A rotor 120 is arranged inside the stator 110, and an air gap 130 is formed between the two.

Further, as shown in FIGS. 15 and 16, the three-phase stator winding circuit and the rotor winding circuit are connected with resonance capacitors 113U, 113V, 113W; 123U, 123V, 123W, respectively, and have capacitances thereof. Have.

[Driving characteristic analysis result]
A capacitor having a capacitance in which the drive frequency of the stator 110 is the resonance frequency f and the slip frequency of the rotor 120 is the resonance frequency f is obtained from the inductance L. As shown in FIG. 16, the analysis is performed by a circuit in which a capacitor is connected in series with the stator 110 and the rotor 120. The analysis conditions are as shown in the table of FIG. 19, the power supply current was 337.5 A (10 A / mm ² ), and the drive frequency f was 1 kHz.

The torque characteristics (s-T characteristics) for slip obtained by the analysis are shown in FIG. When the slip is 0.3, the maximum is 2098 Nm. The torque waveform of slip 0.3 which becomes the maximum torque is shown in FIG. FIG. 22 shows the output characteristics for slippage. The output is maximized when the slip is 0.2, and the magnetic flux density at that time is shown in FIG. In this state, the magnetic flux density of the rotor 120 is high, and it can be confirmed that the electromagnetic resonance coupling is acting. FIG. 24 shows the current (A) of the rotor 120 with respect to the slip, and it can be seen that the maximum current value is obtained when the slip is 0.3. The characteristic curve of FIG. 25 has the same change as that of the induction machine, and the electromagnetic resonance coupling action can be confirmed in any of the slips.

The frequency characteristics are as follows. A 0.2Ω resistor is connected in series to the rotor 120 side for three phases in the electromagnetic resonance motor circuit of FIG. 16, and a capacitor corresponding to the slip frequency f is used on the rotor 120 side for frequency response analysis. It was. The active power of the resistor at that time is shown in FIG. The active power increases as the frequency becomes higher.

In this way, according to the electromagnetic resonance rotating electric machine 101 of the present embodiment, from the stator 110 to the rotor 120 due to the electromagnetic resonance phenomenon that can occur even between relatively distant objects as in the resonance phenomenon in acoustics, for example. Since electric power can be transmitted, a rotational force can be induced even if the gap length of the air gap 130 between the stator 110 and the rotor 120 is expanded, and a high output can be obtained even with a large air gap length as an inducer. Can be done. Further, since the principle is the electromagnetic field resonance phenomenon, it is possible to reduce a large amount of leakage flux and secure high magnetism. This eliminates the previously indispensable iron core-which was traditionally the metal material that made up most of the weight of the rotating machine and also made up almost the entire volume-ultra-lightweight rotating machine and high. An efficient induction type rotary electric machine can be realized. Since it is possible to achieve ultra-light weight and high efficiency, the weight of these devices can be reduced by mounting the electromagnetic resonance rotary electric machine 101 of the present embodiment on an electric airplane or an unmanned airplane capable of flying by solar power generation. In addition, even in moving objects such as mobile devices, robots, electric vehicles, and trains, the weight of the entire device can be reduced by mounting it, the energy required for operation can be significantly reduced, and quick response is possible.

<Third embodiment>
The electromagnetic resonance rotary electric machine of the third embodiment is the axial gap type rotary electric machine 201 shown in FIG. 26. FIG. 26 shows a quarter of the model. In the rotary electric machine 201 of this embodiment, the disk-shaped stator 210 is provided with A and B two-phase windings 211 to form a rotating magnetic field. Further, a disk-shaped rotor 220 is arranged on a facing surface in the rotation axis direction, and a two-phase winding 221 is also provided on the rotor 220 to short-circuit the two phases. The stator 210 forms a stator winding 211 by erecting an FRP coil bobbin (structure) on a reinforcing fiber resin (FRP) disk 213 and winding a coil around the coil bobbin (structure). Further, the rotor 220 has the same structure, and an FRP coil bobbin is erected on an FRP disk 223, and a coil is wound around the coil bobbin to form a rotor winding 221. The stator windings 211 and the rotor windings 221 are centralized windings having a simple structure, and each has a structure in which a coil is wound around eight FRP cylinders. An external capacitor for resonance is connected to each stator winding and each rotor winding to create an electromagnetic resonance state. Capacitors are placed and fixed in cavities provided in each disk. Alternatively, a cylindrical capacitor is built-in and arranged on the inner circumference of each bobbin around which the coil is wound. Alternatively, each bobbin is composed of a dielectric and an electrode plate, and the bobbin itself is formed as a capacitor.

[Driving characteristic analysis result]
-Stator: outer diameter 200 mm, 4-pole-12 coil-30 turns / piece-Rotor: outer diameter 200 mm, 12 coils-30 turns / piece Perform frequency response analysis and transient analysis under the above conditions, and electromagnetic field The energy transmission characteristics of the secondary side (rotor) were analyzed. The power supply frequency was 100 Hz to 50 kHz.

FIG. 27 shows the magnetic flux density distribution of the device under load at 1 kHz. From this, it can be seen that the magnetic flux density is highly distributed due to the resonance coupling between the stator 210 and the rotor 220.

It should be noted that the electromagnetic resonance rotary electric machine of any of the above embodiments is used as an induction motor, the slip frequency control is used for the rotation drive thereof, and the electric motor drive device that controls the current flowing through the rotor so as to have the slip frequency. DR can be adopted. That is, as shown in FIG. 28, an inverter INV that supplies a three-phase AC of a predetermined frequency to the induction motor IM, and an inverter control device that controls the output power and frequency of the inverter INV by sliding frequency vector control. The CTR, the converter CV that converts the AC power of the power supply PW into DC power and supplies it to the inverter INV, the speed detector R that detects the rotation speed of the induction motor IM, and the current detector that detects the output frequency of the inverter INV. The electric motor drive device DR is configured by CW.

By driving the induction motor IM by the sliding frequency vector control and driving the rotating electric machine so that the sliding frequency becomes constant, the sliding frequency which is the resonance frequency of the electric circuit of the rotor becomes constant. Once a capacitor that has the characteristic of resonating with the inductance L of the rotor winding at the slip frequency is determined, even if the rotation speed of the rotor changes, it will always be in a resonance state with the same capacitor capacitance and a large output can be obtained. become able to.

By mounting the electromagnetic resonance rotary electric machine of the present invention on an electric airplane or an unmanned airplane capable of flying by solar power generation, it is possible to realize an electric airplane or an unmanned airplane whose weight is significantly reduced. Further, by mounting it on a moving body such as a mobile device, a robot, an electric vehicle, or a train, energy can be significantly reduced, and a moving body capable of quick response can be realized.

1,101,201 Electromagnetic resonance rotary electric machine 10,110,210 Stator 11,111,211 Stator winding 11U, 11V, 11W Stator coil 12 Stator structure 13U, 13V, 13W Capitol 14 Slots 20, 120, 220 Rotor 21,121,221 Rotor winding 21U, 21V, 21W Rotor coil 22 Rotor structure 23U, 23V, 23W Stator 24 Slot 27 Conductive plate 30 Air gap

Claims (11)

It is composed of a stator having a coil and a capacitor and a rotor having a coil and a capacitor.
The electromagnetic field resonance of the stator and the electromagnetic field resonance of the rotor are resonantly coupled to each other.
An electromagnetic resonance rotating electric machine characterized in that a rotating force is induced in the rotor by utilizing the rotating magnetic field of the stator or power is generated on the stator side by the rotation of the rotor. It is composed of a stator having a winding and a capacitor connecting a plurality of coils and a rotor having a winding and a capacitor connecting a plurality of coils.
The stator has an inductance value and a capacitance value of the winding so as to be in an electromagnetic field resonance state.
The rotor has an inductance value and a capacitance value of the winding so as to be in an electromagnetic field resonance state.
The stator is brought into an electromagnetic resonance state, the rotor is brought into an electromagnetic resonance state, and the rotor is brought into an electromagnetic resonance state.
The electromagnetic field resonance of the stator and the electromagnetic field resonance of the rotor are resonantly coupled to each other.
An electromagnetic resonance rotating electric machine characterized in that a rotating force is induced in the rotor by utilizing the rotating magnetic field of the stator or power is generated on the stator side by the rotation of the rotor. It is composed of a stator having a winding and a capacitor connecting a plurality of coils and a rotor having a winding and a capacitor connecting a plurality of coils.
Said stator is the inductance value and the capacitance value of such winding the electromagnetic field resonant state, the rotor is the inductance value and the capacitance value of such winding the electromagnetic field resonant state,
The electromagnetic field resonance of the stator and the electromagnetic field resonance of the rotor so as to coincide,
The stator is brought into an electromagnetic resonance state, the rotor is brought into an electromagnetic resonance state, and the rotor is brought into an electromagnetic resonance state.
The electromagnetic field resonance of the stator and the electromagnetic field resonance of the rotor are resonantly coupled to each other.
An electromagnetic resonance rotating electric machine characterized in that a rotating force is induced in the rotor by utilizing the rotating magnetic field of the stator or power is generated on the stator side by the rotation of the rotor. The electromagnetic wave according to claim 2 or 3, wherein a capacitor having a capacitance having a drive frequency as a resonance frequency is used for the stator, and a capacitor having a capacitance having a sliding frequency as a resonance frequency is used for the rotor. Resonant rotary electric machine. A composite rotary electric machine including the electromagnetic resonance rotary electric machine according to any one of claims 1 to 4 and a rotary electric machine having an iron core. A stator structure made of an insulating dielectric material having a slot, a stator having a stator winding and a capacitor connecting a plurality of coils inserted in the slot, and an insulating dielectric material having a slot. It is composed of a rotor structure composed of a rotor structure, a rotor winding connecting a plurality of coils inserted in the slot, and a rotor having a capacitor.
The stator set the inductance value and the capacitance value of the windings is set to a value which is a field resonance, the rotor is a value that causes the inductance value and the capacitance value of the winding and the electromagnetic field resonant state and, and, to match the electromagnetic resonance of the electromagnetic field resonance of the stator rotor,
The electromagnetic field resonance of the stator and the electromagnetic field resonance of the rotor are resonantly coupled to each other.
An electromagnetic resonance rotating electric machine characterized in that a rotating force is induced in the rotor by utilizing the rotating magnetic field of the stator or power is generated on the stator side by the rotation of the rotor. A conductive plate is vertically sandwiched in a structure made of an insulating dielectric material to form a rotor structure, a slot is provided in the stator structure, and a plurality of coils inserted in the slots are connected to form a stator winding. A rotor structure in which the conductive plate of the stator and the stator winding are electrically connected to each other as a wire, and the conductive plate is axially sandwiched between a structure made of an insulating dielectric material. A slot is provided in the rotor structure portion, and a plurality of coils inserted in the slot are connected to form a rotor winding, and the conductive plate of the rotor and the rotor winding are electrically connected. It is composed of a rotor and
Said stator is set to the capacitance value of the inductance of the stator winding and the stator such that the electromagnetic field resonant state, the rotor of the rotor winding so that the electromagnetic field resonant state inductance set the capacitance value of the value and the rotor, and is matched with the electromagnetic field resonance of the electromagnetic field resonance of the stator rotor,
The electromagnetic field resonance of the stator and the electromagnetic field resonance of the rotor are resonantly coupled to each other.
An electromagnetic resonance rotating electric machine characterized in that a rotating force is induced in the rotor by utilizing the rotating magnetic field of the stator or power is generated on the stator side by the rotation of the rotor. A conductive plate is vertically sandwiched in a structure made of an insulating dielectric material to form a stator structure, a slot is provided in the stator structure, and a plurality of coils inserted in the slots are connected to form a stator. A wire is formed, and the conductive plate of the stator and the stator winding are electrically connected, and the external capacitance is also connected to the stator winding. A conductive plate is sandwiched in the axial direction to form a rotor structure, a slot is provided in the rotor structure, and a plurality of coils inserted in the slots are connected to form a rotor winding, and the conductivity of the rotor is increased. The plate and the rotor winding are electrically connected, and the external capacitance is also composed of a rotor having a configuration connected to the rotor winding.
Said stator is set to the capacitance value of the sum of the inductance values of the stator winding and the stator such that the electromagnetic field resonant state, the rotor windings as the rotor is the electromagnetic field resonant state of setting the inductance value and the capacitance value of the sum of the rotor, and is matched with the electromagnetic field resonance of the electromagnetic field resonance of the stator rotor,
The electromagnetic field resonance of the stator and the electromagnetic field resonance of the rotor are resonantly coupled to each other.
An electromagnetic resonance rotating electric machine characterized in that a rotating force is induced in the rotor by utilizing the rotating magnetic field of the stator or power is generated on the stator side by the rotation of the rotor. A plurality of metal plates are sandwiched in each of the stator structure and the rotor structure of the insulating dielectric material in the axial direction, and the metal plates at both ends of the metal plates are connected to the coil as terminals. The electromagnetic resonance rotary electric machine according to claim 7 or 8. According to any one of claims 6 to 9, a capacitor having a capacitance having a drive frequency as a resonance frequency is used for the stator, and a capacitor having a capacitance having a sliding frequency as a resonance frequency is used for the rotor. The electromagnetic resonance rotary electric machine described. A rotary electric machine drive device that rotationally drives the electromagnetic resonance rotary electric machine according to any one of claims 1 to 4 and 6 to 9 as an induction motor.
The induction motor is driven by slip frequency vector control.
A rotary electric machine drive device including a slip frequency control device that controls the current flowing through the rotor so as to have a slip frequency.