WO2007145131A1 - 静電モータ - Google Patents
静電モータ Download PDFInfo
- Publication number
- WO2007145131A1 WO2007145131A1 PCT/JP2007/061546 JP2007061546W WO2007145131A1 WO 2007145131 A1 WO2007145131 A1 WO 2007145131A1 JP 2007061546 W JP2007061546 W JP 2007061546W WO 2007145131 A1 WO2007145131 A1 WO 2007145131A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- electrode
- stator
- electrodes
- electrostatic motor
- rotor
- Prior art date
Links
- 239000012212 insulator Substances 0.000 claims abstract description 29
- 230000005684 electric field Effects 0.000 claims abstract description 12
- 239000000696 magnetic material Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 239000000470 constituent Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 239000003463 adsorbent Substances 0.000 claims description 2
- 230000015556 catabolic process Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052573 porcelain Inorganic materials 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N1/00—Electrostatic generators or motors using a solid moving electrostatic charge carrier
- H02N1/002—Electrostatic motors
- H02N1/004—Electrostatic motors in which a body is moved along a path due to interaction with an electric field travelling along the path
Definitions
- the present invention relates to an electrostatic motor that is driven to rotate using electrostatic force, and more particularly to an electrostatic motor that is driven to rotate by generating a high electric field in a vacuum.
- the conventional electric motor using the electromagnetic force composed of a coil and a magnet while generating a force may generate gas in a vacuum and break the vacuum. Also, because it uses a magnetic material, it could not operate in a high magnetic field.
- the present invention has been made in view of the circumstances as described above, and provides an electrostatic motor that can be driven to rotate with a sufficient driving force by generating a high electric field in a vacuum.
- Another object of the present invention is to provide an electrostatic motor that can effectively prevent dielectric breakdown, creeping discharge, spark discharge, etc., can operate even in a high magnetic field, and can achieve light weight reduction. It is said.
- the electrostatic motor of the present invention is characterized by the following.
- a disk-shaped stator and a disk-shaped rotor are disposed opposite to each other in a vacuum vessel, the stator is fixed to the vacuum vessel body, and the rotor is vacuum-rotated via a rotating shaft.
- the first and second electrodes which are pivotally supported by the container body and attached to the electrode support and electrically insulated from each other by the insulator, are alternately arranged in the circumferential direction on the stator.
- the first electrode and the second electrode which are respectively attached to the electrode support and are electrically insulated from each other by the insulator, are alternately arranged in the circumferential direction, and the first electrode and the second electrode on the stator side are rotated.
- the first electrode and the second electrode on the rotor side are separated by a predetermined distance from the center of the rotating shaft, and the first electrode on the stator side is spaced apart by a predetermined distance.
- the first electrode on the stator side and the second electrode are arranged so as to be located between the electrodes and the second electrode row.
- a predetermined electric field is applied between the electrodes, and voltages having different polarities are applied to the first electrode and the second electrode on the rotor side so that they are switched at a predetermined timing.
- the first electrode and the second electrode on the stator side, and the first electrode and the second electrode on the rotor side are each formed in a pin shape, and each is rotated. Be arranged parallel to the axial direction of the shaft.
- the electrode support of the first electrode and the second electrode on the stator side, and the electrode support of the first electrode and the second electrode on the rotor side Insulated support with sufficient creepage distance by each insulator.
- one or a plurality of grooves are respectively formed in the insulator on the stator side and the rotor side.
- the first electrode and the second electrode on the stator side, and the first electrode and the second electrode on the rotor side are each rounded at the ends. It must be formed into a shape with
- stainless steel or the like is used for the metal component in the vacuum vessel, and an inorganic insulator is used for the insulator component.
- a non-magnetic material is used for the metallic component in the vacuum vessel.
- the relative positions of the first and second electrodes on the stator side and the first and second electrodes on the rotor side is provided.
- the gas adsorbent is vapor-deposited on the constituent members in the vacuum vessel.
- the first electrode and the second electrode attached to the electrode support of the stator and the rotor exist in a vacuum, which is similar to a conventional electrostatic motor.
- the dielectric breakdown does not occur even if the electric field between the electrodes is high. Therefore, it is possible to increase the output equivalent to or higher than that of the electromagnetic motor. Therefore, it is possible to provide an electrostatic motor that can be driven to rotate with a sufficient driving force by generating a high electric field in a vacuum.
- the electrode support is insulated and supported with a sufficient creepage distance, and a groove is provided in the insulator to effectively prevent dielectric breakdown, creeping discharge, spark discharge, etc. It can be an electrostatic motor that generates an electric field.
- the electrostatic motor of the present invention can be used in a clean vacuum by using stainless steel or the like as a constituent member and an inorganic insulator such as porcelain or glass.
- a non-magnetic motor can be realized by using a non-magnetic material for the metal component, and can be used even in a high magnetic field.
- the electrostatic motor of the present invention can be reduced in weight as compared with the conventional electric motor by not using a heavy magnetic material for the metal component.
- FIG. 1 is a longitudinal sectional view of an electrostatic motor according to a first embodiment of the present invention.
- FIG. 2 is a plan view of the stator according to the embodiment.
- FIG. 3 is a plan view of the rotor according to the embodiment.
- FIG. 4 is a partial detailed sketch of the first electrode and the second electrode of the stator of the embodiment described above. is there.
- FIG. 5 (A) is a development view showing the arrangement of a partial cross section of the stator-side electrode support and the first electrode and the second electrode of the above embodiment
- FIG. 5 (B) is the same as the above embodiment
- FIG. 5 is a development view showing a partial cross-sectional arrangement of a rotor-side electrode support, a first electrode, and a second electrode.
- Fig. 6 is an explanatory view of the principle of operation by the first electrode and the second electrode on the stator side and the first electrode and the second electrode on the rotor side in the embodiment.
- FIG. 7 is a diagram showing voltage waveforms of the first electrode and the second electrode on the rotor side according to the embodiment.
- FIG. 8 is a longitudinal sectional view of an electrostatic motor according to a second embodiment of the present invention.
- FIG. 9 is a longitudinal sectional view of an electrostatic motor according to a third embodiment of the present invention.
- FIG. 10 shows an electrostatic motor according to a fourth embodiment of the present invention, in which the first and second electrodes on the stator side and the first on the rotor side are radiated from the center of the rotating shaft.
- FIG. 4 is a longitudinal sectional view of an electrostatic motor in which an electrode and a second electrode are arranged.
- FIG. 11 is a cross-sectional view of a stator according to a fourth embodiment.
- FIG. 12 is a cross-sectional view of a rotor according to a fourth embodiment.
- FIG. 1 is a longitudinal sectional view of an electrostatic motor according to a first embodiment of the present invention
- FIG. 2 is a plan view of a stator of the same embodiment
- FIG. 3 is a plan view of the rotor of the same embodiment
- FIG. 4 is a partial detailed sketch of the first electrode and the second electrode of the stator according to the embodiment.
- a disk-shaped stator S and a disk-shaped rotor R are disposed opposite to each other in a vacuum container 11, and the stator S is fixed to the main body of the vacuum container 11. .
- the electrostatic motor of this embodiment can operate under a vacuum of 3 Pa or less.
- the first electrode 34A is fixedly disposed on each electrode support 31 on the stator S side.
- the first electrodes 34A are arranged in two rows at a predetermined distance from the center of the rotating shaft 1 (the center of the motor base 10).
- the second electrode 34B is fixedly disposed on the other electrode support 32 on the stator S side.
- the first electrodes 34A and the second electrodes 34B are arranged alternately. 1st electric
- the pole 34A and the second electrode 34B are arranged in the circumferential direction equally divided on the electrode supports 31 and 32 in parallel with the rotation axis 1, and fixedly arranged in two rows in the radial direction.
- the electrode support 31 and the electrode support 32 provided with the first electrode 34A and the second electrode 34B are fixed by an insulator 33 and attached to the motor base 10 (the vacuum container 11 main body).
- the insulator 33 has a sufficient insulation thickness and creepage distance, and has a shape to prevent creeping discharge by providing a plurality of grooves.
- the sufficient insulation thickness and creepage distance require a thickness greater than the dielectric breakdown voltage of the insulator and a creepage distance several times greater than that.
- the number, shape, depth, and the like of the grooves can be appropriately set according to the size and application of the electrostatic motor.
- the first electrode 44A is also fixedly disposed on each electrode support 41 on the rotor R side.
- the first electrodes 44A are arranged in a row at a predetermined distance from the center of the rotary shaft 1.
- the second electrode 44B is fixedly disposed on the other electrode support 42 on the rotor R side.
- the first electrodes 44A and the second electrodes 44B are arranged so as to be alternately positioned as in the stator S side.
- the first electrode 44A and the second electrode 44B are arranged on the electrode supports 41 and 42 in the circumferential direction equally in parallel with the rotation axis 1, and fixedly arranged in one row in the radial direction.
- An electrode support 41 and an electrode support 42 including the first electrode 44A and the second electrode 44B are fixed by an insulator 43 and attached to the rotary shaft 1.
- the insulator 43 has a sufficient insulation thickness and creepage distance, and has a shape to prevent creeping discharge by providing a plurality of grooves. The number, shape, depth, etc. of the grooves can be set appropriately according to the size and application of the electrostatic motor.
- the first electrode 44A and the second electrode 44B on the rotor R side are supported by the support body 41 in parallel with the rotary shaft 1 in the same manner as the first electrode 34A and the second electrode 34B on the stator S side. , 42 are arranged in equal divisions, but the position from the center of the rotary shaft 1 is such that the rotor S can be driven to rotate, as shown in FIG. Must be midway between rows of 34A and second electrode 34B.
- the first electrode 34A, the second electrode 34B, the first electrode 44A, and the second electrode 44B are pin-shaped, and it is preferable that the ends have roundness to prevent discharge between the electrodes. . These electrode shapes may be shapes other than the pin shape.
- the encoder can be composed of an optical type (slit plate 7 and sensor 8) and a magnetic type (magnetic disk and sensor). Here, the former is adopted, but the rotor R side is used.
- the first electrode 44A and the second electrode 44B are detected by the sensor 8 and processed by the drive circuit (not shown) to output a high voltage (1 to about OOkV) to output the first electrode 44A. , Supplied to the second electrode 44B.
- the vacuum seal 9 is attached to the motor base 10 when the electrostatic motor is used in air or gas, and maintains the vacuum inside the electrostatic motor.
- the present invention functions as an electrostatic motor even in an insulating gas such as SF6 gas, which is an electrostatic motor that operates in a vacuum.
- the force with the first electrode 34A and the second electrode 34B on the stator S side in two rows, and the first electrode 44A and the second electrode 44B on the rotor R side in one row, as described later The number of columns is not limited to this, and can be set to a larger number of columns.
- the first electrode 34A, the second electrode 34B, the electrode supports 31, 32, the first electrode 44A, the second electrode 44B, the electrode supports 41, 42, etc. in the vacuum vessel 11 When using stainless steel or the like that generates less residual gas for metal components, and also using an insulator such as porcelain or glass that generates less residual gas for insulator components, Use is ensured. It is also effective to deposit a gas adsorbing material (getter material) such as titanium, vanadium, tantalum, or dinoleconium on the constituent members in the vacuum vessel 11.
- a gas adsorbing material such as titanium, vanadium, tantalum, or dinoleconium
- a non-magnetic motor when a non-magnetic material is used for the metallic component in the vacuum vessel 11, a non-magnetic motor can be obtained, and use in a high magnetic field is possible. Become. In addition, heavy magnetic materials are not used for metal components, which can contribute to weight reduction.
- the first electrode 44A and the second electrode 44B on the rotor R side are configured to freely move in the circumferential direction between the first electrode 34A and the second electrode 34B on the stator S side.
- Electrode support When a positive high voltage (about 1 to 100 kV) is applied to the holder 42, the first electrode 44B is positively charged and the second electrode 44A is negatively charged.
- the direction of thrust is determined by the position of the rotor R-side electrode 44B with respect to the stator S-side second electrode 34B, and the magnitude and time of the voltage are thrust. Affects the magnitude of (rotational force).
- FIG. 6 is a diagram illustrating the operating principle by showing only the first electrode 34A and the second electrode 34B on the stator S side, and only the first electrode 44A and the second electrode 44B on the rotor R side.
- the second electrode 44B on the rotor R side comes slightly to the right of the position XO of the second electrode 34B on the stator S side (XI position)
- XI position if a positive potential is applied to the second electrode 44B, the second A repulsive force acts on the electrode 34B and the second electrode 44B, and an attractive force acts on the first electrode 34A and the second electrode 44B.
- the rotor R coupled to the first electrode 44A and the second electrode 44B moves by receiving a driving force in the right direction.
- the voltage of the second electrode 44B is switched immediately before the first electrode 34A (position X2) and repeats its operation every time the position timing of the second electrode 44B is detected by the signal from the sensor 8 of the encoder. .
- FIG. 7 shows voltage waveforms of the first electrode 44A and the second electrode 44B on the rotor R side.
- 0 indicates the time of XO
- Tl indicates the time of XI
- ⁇ 2 indicates the time of XI, ⁇ 2.
- FIG. 8 is a longitudinal sectional view of the electrostatic motor of the second embodiment.
- the same elements as those used in the first embodiment are denoted by the same reference numerals, and redundant description is avoided.
- the first electrode 34 ⁇ and the second electrode 34 are provided on the electrode supports 31 and 32 on the stator S side.
- the ridges are arranged around 3 lj and around the circumference, and on the rotor R side, the electrode supports 41 and 42 are arranged with the first electrode 44A and the second electrode 44B in two rows around the circumference.
- a higher output electrostatic motor is realized by increasing the number of electrodes.
- FIG. 9 is a longitudinal sectional view of the electrostatic motor of the third embodiment. Also in FIG. 9, the same elements as those in the drawing used in the first embodiment are denoted by the same reference numerals, and redundant description is avoided. The encoder, slip ring, and brush are not shown.
- the rotor R side By extending the first electrode 44A and the second electrode 44B from both side surfaces of the electrode supports 41 and 42, an output double that of the electrostatic motor including the electrode of the one-support structure of the first embodiment can be achieved. Further, the first electrode 34A and the second electrode 34B can be extended from both side surfaces of the electrode supports 31 and 32 on the stator S side, and the rotor R and the stator S can be stacked in multiple stages in the axial direction.
- FIG. 10 shows an electrostatic motor according to the fourth embodiment.
- the first electrode and the second electrode on the stator side and the first electrode and the second electrode on the rotor side are arranged radially from the rotation axis center.
- FIG. 11 is a sectional view of the stator of the fourth embodiment
- FIG. 12 is a sectional view of the rotor of the fourth embodiment.
- the same elements as those in the drawings used in the first embodiment are denoted by the same reference numerals, and redundant description is avoided.
- the encoder, slip ring, and brush are not shown.
- the positional relationship between the first electrode 44A and the second electrode 44B is different from that in the above embodiments.
- the first electrode 44A is press-fitted toward the axial center into the pipe-shaped electrode support 42 having a large number of holes through a large hole formed in the pipe-shaped electrode support 41.
- the second electrode 44B is fixedly disposed on the electrode support 41.
- the first electrode 34A and the second electrode 34B are fixedly disposed on the electrode supports 31 and 32 in the axial direction.
- the electrode supports 31, 3 2 are fixed to the motor base 10 or the vacuum vessel 11 main body via the insulator 33, and the electrode supports 41, 42 are coupled to the rotary body 12 and the rotary shaft 1 via the insulator 43. To do.
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07744875.1A EP2040366B1 (en) | 2006-06-16 | 2007-06-07 | Electrostatic motor |
US12/308,366 US8278797B2 (en) | 2006-06-16 | 2007-06-07 | Electrostatic motor |
CA2656897A CA2656897C (en) | 2006-06-16 | 2007-06-07 | Electrostatic motor |
US13/531,864 US8779647B2 (en) | 2006-06-16 | 2012-06-25 | Electrostatic motor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006167247A JP4837449B2 (ja) | 2006-06-16 | 2006-06-16 | 静電モータ |
JP2006-167247 | 2006-06-16 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/308,366 A-371-Of-International US8278797B2 (en) | 2006-06-16 | 2007-06-07 | Electrostatic motor |
US13/531,864 Division US8779647B2 (en) | 2006-06-16 | 2012-06-25 | Electrostatic motor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2007145131A1 true WO2007145131A1 (ja) | 2007-12-21 |
Family
ID=38831646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2007/061546 WO2007145131A1 (ja) | 2006-06-16 | 2007-06-07 | 静電モータ |
Country Status (6)
Country | Link |
---|---|
US (2) | US8278797B2 (ja) |
EP (1) | EP2040366B1 (ja) |
JP (1) | JP4837449B2 (ja) |
CA (1) | CA2656897C (ja) |
RU (1) | RU2430269C2 (ja) |
WO (1) | WO2007145131A1 (ja) |
Cited By (1)
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WO2009115646A1 (en) * | 2008-03-19 | 2009-09-24 | Lightway | Device and method for generating force and/or movement |
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JP5154303B2 (ja) * | 2008-05-20 | 2013-02-27 | 株式会社新生工業 | 静電モータ用駆動回路 |
JP5661321B2 (ja) * | 2010-04-09 | 2015-01-28 | 株式会社新生工業 | 静電モータ |
JP2011223745A (ja) * | 2010-04-09 | 2011-11-04 | Shinsei Kogyo:Kk | 静電モータ |
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JP5945102B2 (ja) * | 2011-09-01 | 2016-07-05 | 学校法人 関西大学 | 発電装置 |
JPWO2013153913A1 (ja) * | 2012-04-13 | 2015-12-17 | 株式会社根本杏林堂 | 薬液注入装置 |
WO2013166476A2 (en) * | 2012-05-04 | 2013-11-07 | Weston Johnson | Electrostatic machine |
MD650Z (ro) * | 2012-10-29 | 2014-01-31 | Институт Прикладной Физики Академии Наук Молдовы | Motor electrostatic |
JP5611311B2 (ja) * | 2012-12-04 | 2014-10-22 | 株式会社新生工業 | 静電モータ用駆動回路、静電モータ、及び駆動方法 |
US9270203B2 (en) * | 2013-03-12 | 2016-02-23 | Lawrence Livermore National Security, Llc | Electrode geometry for electrostatic generators and motors |
US9866148B2 (en) | 2014-10-05 | 2018-01-09 | C-Motive Technologies Inc. | Electrostatic machine system and method of operation |
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US20170033712A1 (en) * | 2015-07-31 | 2017-02-02 | Nathanial Henry Lewis | Motor powered by electrostatic forces |
US9748867B2 (en) | 2015-08-03 | 2017-08-29 | General Electric Company | Control system for linear switched capacitive devices |
US10122301B2 (en) | 2015-08-19 | 2018-11-06 | Lawrence Livermore National Security, Llc | Pulsed start-up system for electrostatic generators |
US20170354980A1 (en) | 2016-06-14 | 2017-12-14 | Pacific Air Filtration Holdings, LLC | Collecting electrode |
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US10828646B2 (en) | 2016-07-18 | 2020-11-10 | Agentis Air Llc | Electrostatic air filter |
US11114951B2 (en) | 2016-11-08 | 2021-09-07 | C-Motive Technologies Inc. | Electrostatic machine system and method of operation |
WO2019051292A2 (en) * | 2017-09-11 | 2019-03-14 | TransVolt International Energy Corporation | ELECTRIC MACHINE WITH ELECTRODES HAVING MODIFIED SHAPES |
WO2019161256A2 (en) | 2018-02-15 | 2019-08-22 | The Charles Stark Draper Laboratory, Inc. | Electrostatic motor |
US10875034B2 (en) | 2018-12-13 | 2020-12-29 | Agentis Air Llc | Electrostatic precipitator |
US10792673B2 (en) | 2018-12-13 | 2020-10-06 | Agentis Air Llc | Electrostatic air cleaner |
RU2703256C1 (ru) * | 2018-12-29 | 2019-10-16 | Николай Иванович Кузин | Электростатический двигатель |
CN109441851A (zh) * | 2019-01-16 | 2019-03-08 | 北京航空航天大学 | 一种基于静电驱动的扇叶及其混合驱动方法 |
EP4082097A4 (en) * | 2019-12-28 | 2024-02-07 | L Livermore Nat Security Llc | ELECTROSTATIC GENERATOR ELECTRODE CENTERING AND SEISMIC ISOLATION SYSTEM |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009115646A1 (en) * | 2008-03-19 | 2009-09-24 | Lightway | Device and method for generating force and/or movement |
CN101978591A (zh) * | 2008-03-19 | 2011-02-16 | 莱特威公司 | 用于产生力和/或运动的装置及方法 |
Also Published As
Publication number | Publication date |
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US20100164322A1 (en) | 2010-07-01 |
RU2430269C2 (ru) | 2011-09-27 |
EP2040366A4 (en) | 2012-07-04 |
RU2008152022A (ru) | 2010-08-10 |
US20120274177A1 (en) | 2012-11-01 |
EP2040366A1 (en) | 2009-03-25 |
EP2040366B1 (en) | 2017-11-08 |
CA2656897C (en) | 2016-06-21 |
JP4837449B2 (ja) | 2011-12-14 |
CA2656897A1 (en) | 2007-12-21 |
US8278797B2 (en) | 2012-10-02 |
JP2007336735A (ja) | 2007-12-27 |
US8779647B2 (en) | 2014-07-15 |
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