JP3661360B2 - Power generator - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
  The present invention relates to a power generation device such as a motor or a linear motor used for home use or industrial use.
[0002]
[Prior art]
  A conventionally used power generator will be described with reference to FIG. The first object 1 is composed of a permanent magnet 6 and a permanent magnet 7 and a stator 8 formed of a yoke 8 using a silicon steel plate constituting a magnetic circuit, a DC power source 3, and a carbon product connected to the DC power source 3. The brush 4 and the brush 5 are provided. The second object 2 acting as a rotor driven by the first object 1 is a steel plate that constitutes a magnetic circuit together with the three commutators 9, 10, and 11 and the yoke 8 that constitutes the first object 1. The coil 12,13,14 currently wound up and the axis | shaft 15 which takes out motive power outside are provided. The coil 12 is connected between the commutator 9 and the commutator 10, the coil 13 is connected between the commutator 10 and the commutator 11, and the coil 14 is connected between the commutator 11 and the commutator 9.
[0003]
  With the above configuration, when the voltage of the DC power source 3 is applied to the brush 4 and the brush 5, a current flows through the coils 12 to 14. That is, when current flows in a magnetic circuit constituted by the permanent magnets 6 and 7 and the yoke 8 and the steel plate used for the rotor, the coils 12 to 14 have a magnetic field and a chain generated by the magnetic circuit. It is something that you exchange. As a result, the coils 12 to 14 receive torque by the magnetic circuit, and the second object 2 starts to rotate. When the second object 2 rotates and the brush 5 comes into contact with the commutator 11, the direction of the current flowing through the coil 13 is reversed. At this time, since the angle relationship between the first object 1 and the second object 2 is advanced, the direction of torque generated by the coils 12 to 14 continues to be clockwise. Further, when the rotation of the second object 2 further proceeds, the coil 13 is short-circuited by the commutator 11. During this short-circuit period, the coils 12 to 14 do not generate torque, but the second object 2 continues to rotate due to inertia.
[0004]
  By repeating the above operation, the second object 2 continues to rotate. In this way, the user can continuously extract power from the shaft 15.
[0005]
[Problems to be solved by the invention]
  The conventional power generation apparatus has a problem that the brush is worn or sparks are generated between the brush and the commutator.
[0006]
[Means for Solving the Problems]
  The present inventionA first object having a first coil and an inverter circuit for supplying a high-frequency current to the first coil; and a yoke for supplying a magnetic field to the second object; and being movable relative to the first object A second object provided, wherein the second object has at least one magnetic coupling with the first coil that varies according to a relative position between the first object and the second object. Each of the coupling coils, a rectifier circuit that rectifies the output of the first coil, and a second coil that receives the output of the rectifier circuit, and mechanical force between the first coil and the first object by the current of the second coil Is generated,Long service life with no brushsoThis is a safe power generator.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
  The invention described in claim 1A first object having a first coil and an inverter circuit for supplying a high-frequency current to the first coil; and a yoke for supplying a magnetic field to the second object; and being movable relative to the first object A second object provided, wherein the second object has at least one magnetic coupling with the first coil that varies according to a relative position between the first object and the second object. Each of the coupling coils, a rectifier circuit that rectifies the output of the first coil, and a second coil that receives the output of the rectifier circuit, and mechanical force between the first coil and the first object by the current of the second coil Is generated,The second object is a power generation device that is driven in a configuration that does not use a brush and a commutator.
[0008]
  The invention described in claim 2An inverter circuit for supplying a high frequency current to the first coil and the first coil, a yoke having a permanent magnet for supplying a magnetic field to the second object, and a movable relative to the first object A second object, wherein the second object has a magnetic coupling with the first coil that varies according to a relative position of the first object and the second object. One coupling coil, a rectifier circuit that rectifies the output of the first coil, and a second coil that receives the output of the rectifier circuit, the second coil being magnetically coupled to the permanent magnet and second A mechanical force is generated between the coil and the first object,The second object is driven by the current of the second coil that is magnetically coupled to the permanent magnet, so that a highly efficient power generation device that does not require energy for excitation is provided.
[0009]
  The invention described in claim 3An inverter circuit for supplying a high-frequency current to the first coil and the first coil, a yoke for supplying a magnetic field to the second object, an excitation coil wound on the yoke, and a power source for supplying current to the excitation coil And a second object that is movable relative to the first object, wherein the second object is magnetically coupled to the first coil, and At least one coupling coil that changes according to a relative position between the first object and the second object; a rectifier circuit that rectifies the output of the first coil; and a second coil that receives the output of the rectifier circuit. The second coil is magnetically coupled to the exciting coil and generates a mechanical force with the first object by the current of the second coil;The second coil is coupled to an exciting coil wound on a yoke, and the current supplied to the exciting coil is adjusted to provide a high-performance power generator capable of speed control over a wide range.
[0010]
  The invention described in claim 4A first object having a first coil, an inverter circuit for supplying a high-frequency current to the first coil, a yoke made of a ferromagnetic material for supplying a magnetic field to the second object, and the first object The second object is relatively movable, and the second object has a magnetic coupling with the first coil at a relative position between the first object and the second object. And at least one coupling coil that changes in response, a rectifier circuit that rectifies the output of the first coil, and a second coil that receives the output of the rectifier circuit. And generate mechanical force betweenThe second object is driven by a second coil that receives a reluctance force from a yoke made of a ferromagnetic material, so that a power generator having a very simple structure is obtained.
[0011]
  The invention described in claim 55. The power generation device according to claim 1, wherein the inverter circuit includes a DC power source, a switching element, and a resonance capacitor, and the first coil and the switching element are connected in series, and both ends of the series body are connected. Is connected between the output terminals of the DC power supply, and the resonant capacitor is connected between the connection point of the switching element and the first coil and one terminal of the DC power supply,The power generation device can reduce the switching loss when the switching element is turned off and can suppress the generation of noise.
[0012]
  The invention described in claim 65. The power generation device according to claim 1, wherein the inverter circuit includes a DC power source, a first switching element, a second switching element connected in series to the first switching element, and a resonant capacitor. Both ends of the series body of the first switching element and the second switching element are connected between the output terminals of the DC power supply, the resonance capacitor is connected in series with the first coil, and this series body is connected to the first switching element. Connected between the connection point of the element and the second switching element and one terminal of the DC power supply,It is a highly efficient power generator.
[0013]
【Example】
  Example 1
  The first embodiment of the present invention will be described below. FIG. 1 is a circuit diagram showing the configuration of this embodiment. The power generation apparatus of the present embodiment is a motor that supplies power to a load by rotational movement, and includes a first object 21 that functions as a stator and a second object 22 that functions as a rotor. The first object 21 includes a yoke 39 for supplying a magnetic field to the second object 22, permanent magnets 38 and 39 provided on the end face of the yoke 39, and a first coil 24 wound on the ferrite core 23. And an inverter circuit 50 for supplying a high-frequency current to the first coil 24. The second object 22 includes a second coil 34, 35, 36 wound around a core formed by stacking silicon steel plates and the like, and a coupling coil 28, which supplies current to the second coil 34, 35, 36. 29.30. The coupling coils 28, 29, and 30 are wound around the surfaces of the ferrite cores 25, 26, and 27, and are sequentially coupled to the first coil 24. A rectifier circuit 32 composed of diodes 51 and 52 is connected to the coupling coil 28, and the output of the rectifier circuit 32 is supplied to the second coil 35. Similarly, a rectifier circuit 31 constituted by diodes 53 and 54 is connected to the coupling coil 29, and the output of the rectifier circuit 31 is supplied to the second coil 34. A rectifier circuit 33 constituted by diodes 55 and 56 is connected to the coupling coil 30, and the output of the rectifier circuit 33 is supplied to the second coil 36. In this embodiment, the rectifier circuit 31 is constituted by diodes 51 and 52, the rectifier circuit 32 is constituted by diodes 53 and 54, and the rectifier circuit 33 is constituted by diodes 55 and 56.
[0014]
  The ferrite cores 23, 25, 26, and 27 are arranged on the same plane, and the second coils 34, 35, and 36 and the permanent magnets 37 and 38 are planes that are separated from the plane by 50 millimeters in the axial direction.InProvided.
[0015]
  The inverter circuit 50 includes a DC power supply 40 that outputs a DC voltage of 100 volts, a switching element 43 configured by connecting an IGBT 41 having a withstand voltage of 900 volts and a diode 42 in parallel, and a resonance capacitor 44. In this embodiment, the DC power source 40 includes a voltage source 48, a smoothing capacitor 45 connected to the output thereof, and a filter circuit 47 constituted by a choke coil 46. The first coil 24 is connected in series with the switching element 43, and a DC power supply 40 supplies power to both ends of the series body. The resonance capacitor 44 is connected between the connection point between the switching element 43 and the first coil 24 and the positive terminal of the DC power supply. A drive circuit 49 for driving the switching element 43 is connected to the gate terminal of the IGBT 41.
[0016]
  The operation of this embodiment will be described below. When a switch (not shown) is turned on, the inverter circuit 50 starts operating and supplies a high frequency current of 25 kilohertz to the first coil 24.
[0017]
  The inverter circuit 50 operates as shown in FIG. 2A shows the relationship between the output voltage Vdc of the DC power supply 40 and the collector-emitter voltage Vce of the switching element 43, FIG. 2A shows the current Ic flowing through the switching element 43, and FIG. 2C shows the first coil 24. The voltage V generated between both terminals_LAnd current I_LShows the relationship. This waveform shows the case where the drive circuit 49 generates an on / off signal at 25 kHz.
[0018]
  In the on period Ton, the current supplied from the DC power supply 40 flows through the first coil 24 and the switching element 43, and a substantially DC voltage is applied between the terminals of the first coil 24 and flows through the switching element 43. The current Ic increases almost linearly.
[0019]
  In the Toff period in which the switching element 43 is turned off by the drive circuit 49, the current flowing in the first coil 24 starts flowing to the resonance capacitor 44 at the moment when the switching element 43 is turned off. Resonance begins between. Therefore, the collector-emitter voltage Vce of the switching element 43 has a resonance waveform as shown in FIG.
[0020]
  After this resonance operation continues for about half a cycle, V_L= Vdc, that is, the voltage of the first coil 24 becomes equal to the voltage of the DC power supply 40 again. At this moment, the current of the resonant capacitor 44 becomes 0, and the diode 42 is turned on instead. That is, the voltage Vce of the switching element 43 is almost zero, and the diode 42 is turned on, so that the switching element 43 is in a conductive state.
[0021]
  At this time, the drive circuit 49 raises the gate-emitter voltage of the IGBT 41 to a high level in a state where a current flows through the diode 42. For this reason, the switching element 43 performs a switching operation called a quasi-E class.
[0022]
  By repeating the above operation, the inverter circuit 50 of this embodiment supplies a high frequency current of 25 kilohertz to the first coil 24. When a high frequency current is supplied to the first coil 24, an induced electromotive force is generated in the coupling coil 28, for example. The high-frequency current flowing through the coupling coil 28 by the induced electromotive force is rectified by the rectifier circuit 31, and the output is supplied to the second coil 34. In this embodiment, the rectifier circuit 31 is composed of diodes 50 and 51, which has the same circuit configuration as a secondary side rectifier circuit such as a forward type switching power supply device. Therefore, the terminal voltage V of the coupling coil 28₂Is positive, the diode 50 is turned on and the terminal voltage V₂Is negative, the diode 51 is turned on, and a current flows continuously by the energy stored in the inductance of the second coil 34. At this time, the magnetic flux generated by the permanent magnets 38 and 39 flows in the magnetic field formed by the core constituting the second object and the yoke 39 provided with the permanent magnets 38 and 39 on the end face. Therefore, the current flowing through the second coil 34 is linked to the magnetic flux generated by the permanent magnets 38 and 39. For this reason, the second coil 34 generates BIL torque, and the entire second object 22 starts to rotate clockwise.
[0023]
  When the rotation angle of the second object 22 reaches about 60 degrees, the coupling between the first coil 24 and the coupling coil 28 is released, and the coupling coil 30 is coupled with the first coil 24. Thus, the current flowing through the coupling coil 30 similarly flows through the second coil 35, and the second coil 35 generates BIL torque. Thus, the second object 22 is further rotated by 60 degrees, and then the coupling coil 29 is coupled to the first coil 24. Thus, the 1st coil 24 couple | bonds with the coupling coils 28 * 29 * 30 one by one, and the 2nd object 22 continues rotation.
[0024]
  In the present embodiment, the second object 2 rotates at a maximum of 3600 revolutions per minute (60 revolutions per second), and this rotation can be extracted outside using the shaft 56.
[0025]
  As described above, according to the present embodiment, the currents of the coupling coils 28 to 30 that are magnetically coupled to the first coil 24 are supplied to the second coils 34 to 36 through the rectifier circuits 31 to 33. Using the torque received by the second coils 34 to 36, the second object 22 does not require a commutator or a brush, and realizes a long-life and safe power generation device.
[0026]
  At this time, in this embodiment, the second object 22 is driven by the current of the second coils 34 to 36 that are magnetically coupled to the permanent magnets 37 and 38, and energy for excitation is required. It realizes a highly efficient power generation device that does not.
[0027]
  In this embodiment, ferrite cores 23, 25, 26 and 27 are used. For this reason, the efficiency of the inverter circuit 50 can be improved. That is, since the ferrite cores 23, 25, 26 and 27 are used, the iron loss with respect to the high frequency current is small. Further, by devising the shape of the ferrite cores 23, 25, 26 and 27, when the rotation of the second object 22 proceeds, the degree of coupling between the second coil 24 and the coupling coils 34 to 36 is optimally adjusted. You can also
[0028]
  The inverter circuit 50 used in this embodiment has a DC power supply 40, a switching element 43, and a resonance capacitor 44, and the first coil 24 and the switching element 43 are connected in series. Are connected between the output terminals of the DC power supply 40, and the resonance capacitor 44 is connected between the connection point of the switching element 43 and the first coil 24 and one terminal of the DC power supply 40. For this reason, since the resonant capacitor 44 prevents the voltage from rising suddenly when the switching element 43 is turned off, noise can be prevented, the turn-off loss of the switching element 43 can be suppressed, and the IGBT 41 can be latched. The required amount of up resistance can be reduced. Also, since no reverse voltage is applied at the time of sudden turn-off for the diode 42, it is possible to use a diode that takes a reverse recovery time, and the switching element 43 can be made inexpensive. It is also possible to reduce the cost of the device.
[0029]
  In this embodiment, the drive circuit 49 uses the integrated circuits AN6715 and AN6728, and has a low cost configuration with a small number of parts. However, discrete components such as transistors, diodes, resistors and capacitors can be used as the drive circuit 49.
[0030]
  In addition, the first coil 24 and the coupling coils 27 to 29 used in this embodiment are wound around the ferrite core 23 and the ferrite cores 25 to 27. That is, the size of the gap between the ferrite core 23 and the ferrite cores 25, 26, and 27 can be easily adjusted. Therefore, the inductance value of the first coil 24 can be easily adjusted to an appropriate value, and the switching waveform of the switching element 43 indicated by Vce can be reduced to 0 as shown in FIG. Is. Therefore, there is no occurrence of a so-called short-circuit operation mode, the turn-on loss of the IGBT 41 can be reduced, and generation of high-frequency line noise and radiation noise can be suppressed.
[0031]
  That is, when the inductance value of the first coil 24 is small, the waveform of Vce does not reach 0 as indicated by the broken line in FIG. Therefore, after the IGBT 41 is turned off, the voltage at both ends of the first coil 24 does not reach the output voltage of the DC power supply 40 again, and the resonance voltage waveform generated at both ends of the first coil 24 is attenuated. The resonance is terminated without the diode 42 being conducted. As a result, the voltage Vce at both ends of the IGBT 41 is turned on while having a certain value, so that a short-circuit operation mode in which the resonant capacitor 44 is short-circuited through the DC power supply 40 occurs at the moment when the IGBT 41 is turned on. For this reason, the turn-on loss of the IGBT 41 increases, and the generation of high-frequency line noise and radiation noise increases.
[0032]
  However, when the on-time is set to a certain level or less, the resonance operation becomes insufficient, and there is a mode in which no current flows through the diode 42, and it is not allowed to operate in this state. In this case, naturally, the turn-on loss of the IGBT 41 increases. However, this is effective when, for example, the on-period at the time of startup is set to a small value and the control is gradually expanded after startup for the purpose of preventing an inrush current at the startup of the power generation device.
[0033]
  In this embodiment, the operating frequency of the inverter 25 is set to a high frequency of 25 kilohertz. For this reason, the switching loss of the switching element 43 can be suppressed, no harsh noise is generated, and the BIL torque generated between the first coil 24 and the coupling coils 28 to 30 is suppressed to a small level. BIL torque generated in the coils 34 to 36 can be used effectively. The operating frequency of the inverter circuit 50 can be set to a higher frequency such as 100 kilohertz or 1 megahertz. In this case, the first coil 24, the coupling coils 28 to 30 and the ferrite cores 23, 25, 26 and 27 can be reduced in size.
[0034]
  In this exampleInverter circuitThe resonance capacitor 44 constituting 50 is connected at one end to the plus side of the DC power supply 40 and in parallel with the first coil 24, but is connected to the minus terminal side and connected between the collector and emitter of the switching element 43. Even if they are arranged in parallel, they operate in the same manner. In addition, the switching element 43 and the first coil 24 can also have a configuration in which the switching element 43 is arranged on the plus side. Of course, for the switching element 43, a bipolar type, MOSFET, GTO or the like can be used in addition to the IGBT.
[0035]
  Further, the rectifier circuits 31 to 33 provided on the second object 22 are configured by using two diodes in this embodiment, but this configuration is also a full-wave rectifier bridge or a diode of only one stone. May be connected in series to the coupling coil, and the polarity may be forward or flyback with respect to the on / off state of the switching element 43.
[0036]
  In this embodiment, the period of the ON signal generated by the drive circuit 49 is variable. For this reason, the magnitude of the induced electromotive force generated in the coupling coils 28, 29, and 30 can be adjusted, whereby the magnitude of the current flowing through the second coils 34, 35, and 36 can be adjusted. That is, speed control, torque control, positioning control, etc. can be easily realized like a DC motor.
[0037]
  In addition, in order to execute speed control with high accuracy, the configuration of the present embodiment includes, for example, detection for detecting voltage generated at both ends of the switching element 43, current flowing through the switching element, current supplied by the DC power supply 40, and the like. It is possible to add a circuit or a speed sensor for detecting the speed. That is, as the second object 22 rotates, the coupling state between the coupling coils 28 to 30 and the first coil 24 is periodically different, and the rotation speed can be detected from this fluctuation cycle.
[0038]
  (Example 2)
  Next, a second embodiment of the present invention will be described. FIG. 3 is a circuit diagram showing the configuration of this embodiment. In the present embodiment, the configuration of the first object 71 is different from that of the first embodiment. Used in this exampleInverter circuit72 includes a DC power supply 40, a first switching element 64, a second switching element 65, and a resonant capacitor 63. The first switching element 64 and the second switching element 65 are connected in series, Both ends thereof are connected between the output terminals of the DC power supply 40, and the series circuit of the resonance capacitor 63 and the first coil 24 is connected to the connection point between the first switching element 64 and the second switching element 65 and the minus of the DC power supply 40. Connected between terminals.
[0039]
  In this embodiment, the switching element 64 is configured by a parallel circuit of an IGBT 66 and a diode 67, and the switching element 65 is configured by a parallel circuit of an IGBT 68 and a diode 69. The drive circuit 70 alternately turns on the switching elements 64 and the switching elements 65, and the resonance capacitor 63 resonates in series with the first coil 24.
[0040]
  The first object 71 includes an exciting coil 61 wound around the yoke 60 and a power source 62 that supplies current to the exciting coil 61. Further, the second coils 34, 35, and 36 constituting the second object 22 are linked with the magnetic field generated by the exciting coil 61. The degree of magnetic coupling at this time varies depending on the relative position, that is, the angle between the first object 71 and the second object 22.
[0041]
  The operation of this embodiment will be described below. When the drive circuit 70 turns on the switching element 64, the DC power supply 40 supplies current to the switching element 64, the first coil 24, and the resonant capacitor 63. Next, when the drive circuit 70 turns off the switching element 64 and the switching element 65 is turned on, the resonant capacitor 63 supplies current to the first coil 24 and the second switching element 65.
[0042]
  In the present embodiment, the operating frequency of the drive circuit 70 is set to 25 kilohertz that is substantially equal to the resonant frequency of the first coil 24 and the resonant capacitor 63, and the first switching 64 and the second switching element 65 take 40 μs. ON / OFF as a cycle. However, in the process of switching between the first switching element 64 and the second switching element 65, there is a delay time when turning off, so that the upper and lower elements are simultaneously turned off in order to avoid a simultaneous on state. A signal indicating a signal period so-called dead time is output from the drive circuit 70.
[0043]
  Thus, the inverter circuit 72 supplies a high frequency current of about 25 kilohertz to the first coil 24. At this time, an induced electromotive force having the same frequency as the current flowing in the first coil is generated in the coupling coil 28 adjacent to the first coil 24. The high-frequency current flowing through the coupling coil 28 is rectified by the rectifier circuit 31 and supplied to the second coil 34.
[0044]
  At this time, a direct current is supplied from the power source 62 to the exciting coil 61. For this reason, the yoke 60 generates a DC magnetic field, and the second coil 34 is linked to the DC magnetic field. Therefore, the second coil 34 generates a clockwise torque, and the entire second object 22 starts to rotate as in the first embodiment. Thereafter, as in the first embodiment, the second coil that generates torque changes to 35 and 36, and the second object 22 continues to rotate.
[0045]
  In particular, in this embodiment, the excitation current If can be adjusted by the power source 62. That is, increasing If decreases the speed, and decreasing If increases the speed. In other words, in the present embodiment, speed control over a wider range than that of the configuration shown in the first embodiment is achieved by increasing or decreasing If while minimizing the loss of the first switching element 64 and the second switching element 65.・ Torque control can be executed.
[0046]
  At this time, if the operation of the inverter circuit 72 is adjusted, for example, if the oscillation frequency of the drive circuit 70 is increased with respect to the resonance frequency, the current supplied to the first coil 24 decreases, and the second object 22 Speed or torque can be reduced. Conversely, even when the operating frequency of the inverter circuit 72 is made lower than the resonance frequency, the current supplied to the first coil 24 decreases, and thus the speed or torque of the second object 22 decreases. In other words, control as broad as speed control and torque control by adjusting the excitation current If cannot be performed, but some adjustment can be performed.
[0047]
  Further, when the method of adjusting the operation of the inverter circuit is employed, the reverse recovery current flows through the diodes 67 and 69 at the timing of switching between the first switching element 64 and the second switching element 65. A recovery diode is required, but almost no turn-off loss occurs.
[0048]
  In addition, the current flowing through the first coil 24 can be adjusted by changing the ratio of the ON period of the first switching element 64 and the second switching element 65.
[0049]
  In this embodiment, as shown in FIG. 3, a magnetic circuit in which an exciting coil 61 is wound on a yoke 60 and an inverter circuit 72 are used in combination. The inverter circuit 50 shown in FIG. 1 can be used in combination, or the inverter circuit 72 and the yoke 39 shown in FIG. 1 can be used in combination.
[0050]
  (Example 3)
  Next, a third embodiment of the present invention will be described. FIG. 4 is a circuit diagram showing the configuration of this embodiment. In the present embodiment, a ferromagnetic material such as a silicon steel plate is used as the yoke 76, and the second coils 34, 35, and 36 are configured to be magnetically coupled to the yoke 76.
[0051]
  The operation of this embodiment will be described below. As described in the first and second embodiments, when a current flows through the second coils 34 to 36, the yoke 76 made of a ferromagnetic material is magnetized, and a magnetic field is generated from the yoke 76. This magnetic field is interlinked with the second coils 34 to 36, and the second coils 34 to 36 generate rotational torque. Thus, the second object 22 rotates.
[0052]
  That is, the magnetic resistance of the yoke 76 changes depending on the relative position, that is, the angle between the first object 75 and the second object 22. Therefore, the reluctance torque received by the second coils 34 to 36 is received in the direction in which the value of the magnetic resistance is minimized. When the second object 22 starts to rotate in that direction, the coupling coils 28 to 30 that are magnetically coupled to the first coil 24 are sequentially switched according to the angle of rotation, so that the second coil that receives the reluctance torque also , 34 to 36 are sequentially switched. For this reason, the 2nd object 22 rotates continuously.
[0053]
  As described above, in this embodiment, since a ferromagnetic material is used as the yoke 76, the change in performance with respect to the change in temperature is smaller than that using a permanent magnet. Therefore, it can be used in a high temperature atmosphere. In addition, since no magnet is required, the number of parts is reduced, the number of assembly steps is reduced, and a structurally robust one can be realized.
[0054]
【The invention's effect】
  According to a first aspect of the present invention, there is provided a first object having a first coil, an inverter circuit that supplies a high frequency current to the first coil, a yoke that supplies a magnetic field to the second object, A second object provided so as to be movable relative to the object, wherein the second object is:At least one magnetic coupling with the first coil varies depending on a relative position of the first object and the second object.A coupling coil, a rectifier circuit that rectifies the output of the first coil, and a second coil that receives the output of the rectifier circuit, and generates mechanical force between the first object and the current of the second coil Configuration toSince the,Long life without using brush and commutatorsoRealizing a safe power generatorcan do.
[0055]
  According to a second aspect of the present invention, a first coil, an inverter circuit that supplies a high-frequency current to the first coil, a yoke that includes a permanent magnet that supplies a magnetic field to the second object, and a first object A second object provided relatively movable with respect to the second object,At least one magnetic coupling with the first coil varies depending on a relative position of the first object and the second object.A coupling coil; a rectifier circuit that rectifies the output of the first coil; and a second coil that receives the output of the rectifier circuit, wherein the second coil is magnetically coupled to a permanent magnet and A configuration in which mechanical force is generated between the first object and an electric current;Since the,Realizing a highly efficient power generator that does not require energy for excitationcan do.
[0056]
  The invention described in claim 3 includes a first coil, an inverter circuit that supplies a high-frequency current to the first coil, a yoke that supplies a magnetic field to the second object, an exciting coil wound on the yoke, A first object having a power source for supplying a current to the exciting coil; and a second object provided so as to be movable relative to the first object, wherein the second object is:At least one magnetic coupling with the first coil varies depending on a relative position of the first object and the second object.A coupling coil; a rectifier circuit that rectifies the output of the first coil; and a second coil that receives the output of the rectifier circuit, wherein the second coil is magnetically coupled to the excitation coil, and the second coil Generating mechanical force with the first object by the current ofSince the,Realization of a high-performance power generator capable of speed control over a wide rangecan do.
[0057]
  According to a fourth aspect of the present invention, there is provided a first coil including a first coil, an inverter circuit that supplies a high-frequency current to the first coil, and a yoke configured by a ferromagnetic material that supplies a magnetic field to the second object. An object and a second object that is movable relative to the first object, wherein the second object is:At least one magnetic coupling with the first coil varies depending on a relative position of the first object and the second object.A coupling coil, a rectifier circuit that rectifies the output of the first coil, and a second coil that receives the output of the rectifier circuit, and generates mechanical force between the first object and the current of the second coil Configuration toSince the,Realized a power generator with a simple configurationcan do.
[0058]
  The invention described in claim 5The inverter circuit includes a direct current power source, a switching element, and a resonance capacitor. The first coil and the switching element are connected in series, and both ends of the series body are connected between output terminals of the direct current power source. Is connected between the connection point of the switching element and the first coil and one terminal of the DC power supply,Realize a power generation device that can reduce switching loss when switching elements are turned off and can suppress noise generation.be able to.
[0059]
  The invention described in claim 6BThe inverter circuit includes a DC power source, a first switching element, a second switching element connected in series to the first switching element, and a resonance capacitor, and the first switching element and the second switching element Both ends of the series body are connected between the output terminals of the DC power supply, the resonance capacitor is connected in series with the first coil, and this series body is connected to the connection point between the first switching element and the second switching element and the DC. Connected between terminals of the power supplyFromRealized highly efficient power generatorcan do.
[Brief description of the drawings]
FIG. 1 is a circuit diagram showing a configuration of a power generator according to a first embodiment of the present invention.
FIG. 2 is a waveform diagram showing the operation of the inverter circuit. (A) A waveform diagram showing the output voltage of the DC power supply and a voltage between the collector and the emitter of the switching element. (A) A waveform diagram showing the current flowing through the switching element. ) Waveform diagram showing the voltage generated between both terminals of the first coil and the current flowing through the first coil.
FIG. 3 is a circuit diagram showing a configuration of a power generator according to a second embodiment of the present invention.
FIG. 4 is a circuit diagram showing a configuration of a power generating apparatus according to a third embodiment of the present invention.
FIG. 5 is a circuit diagram showing a configuration of a conventional power generation device.
[Explanation of symbols]
  21 First object
  22 Second object
  24 First coil
  28 Coupling coil
  29 Coupling coil
  30 Coupling coil
  31 Rectifier circuit
  32 Rectifier circuit
  33 Rectifier circuit
  37 Permanent magnet
  38 Permanent magnet
  39 York
  40 DC power supply
  43 Switching elements
  44 Resonant capacitor
  50 Inverter circuit
  60 York
  61 Excitation coil
  62 Power supply
  63 Resonant capacitor
  64 First switching element
  65 Second switching element
  76 York

Claims (6)

A first object having a first coil and an inverter circuit for supplying a high-frequency current to the first coil; and a yoke for supplying a magnetic field to the second object; and being movable relative to the first object A second object provided, wherein the second object has at least one magnetic coupling with the first coil that varies according to a relative position between the first object and the second object. Each of the coupling coils, a rectifier circuit that rectifies the output of the first coil, and a second coil that receives the output of the rectifier circuit, and mechanical force between the first coil and the first object by the current of the second coil Power generation device that generates An inverter circuit for supplying a high frequency current to the first coil and the first coil, a yoke having a permanent magnet for supplying a magnetic field to the second object, and a movable relative to the first object A second object, wherein the second object has at least one magnetic coupling with the first coil that varies according to a relative position of the first object and the second object. A coupling coil; a rectifier circuit that rectifies the output of the first coil; and a second coil that receives the output of the rectifier circuit, wherein the second coil is magnetically coupled to a permanent magnet and A power generation device that generates mechanical force with a first object by an electric current. An inverter circuit for supplying a high-frequency current to the first coil and the first coil, a yoke for supplying a magnetic field to the second object, an excitation coil wound on the yoke, and a power source for supplying current to the excitation coil And a second object that is movable relative to the first object, wherein the second object is magnetically coupled to the first coil, and At least one coupling coil that changes according to a relative position between the first object and the second object; a rectifier circuit that rectifies the output of the first coil; and a second coil that receives the output of the rectifier circuit. A power generator that magnetically couples the second coil to the exciting coil and generates a mechanical force with the first object by the current of the second coil. A first object having a first coil, an inverter circuit for supplying a high-frequency current to the first coil, a yoke made of a ferromagnetic material for supplying a magnetic field to the second object, and the first object The second object is relatively movable, and the second object has a magnetic coupling with the first coil at a relative position between the first object and the second object. And at least one coupling coil that changes in response, a rectifier circuit that rectifies the output of the first coil, and a second coil that receives the output of the rectifier circuit. A power generator that generates mechanical force between them.   The inverter circuit includes a DC power supply, a switching element, and a resonance capacitor, and the first coil and the switching element are connected in series, and both ends of the series body are connected between output terminals of the DC power supply. 5. The power generation device according to claim 1, wherein the power generation device is connected between a connection point between the switching element and the first coil and one terminal of the DC power supply.   The inverter circuit includes a DC power source, a first switching element, a second switching element connected in series to the first switching element, and a resonant capacitor, and the inverter circuit includes the first switching element and the second switching element. Both ends of the series body are connected between the output terminals of the DC power source, the resonant capacitor is connected in series with the first coil, and this series body is connected to the connection point between the first switching element and the second switching element and the DC. The power generation device according to any one of claims 1 to 4, wherein the power generation device is connected between terminals of a power source.

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