CN201490855U - Permanent magnet generator with multiple rotors - Google Patents
Permanent magnet generator with multiple rotors Download PDFInfo
- Publication number
- CN201490855U CN201490855U CN200920172923XU CN200920172923U CN201490855U CN 201490855 U CN201490855 U CN 201490855U CN 200920172923X U CN200920172923X U CN 200920172923XU CN 200920172923 U CN200920172923 U CN 200920172923U CN 201490855 U CN201490855 U CN 201490855U
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Abstract
The utility model discloses a permanent magnet generator with multiple rotors, which is provided with multiple permanent magnet rotors, wherein one of the multiple permanent magnet rotors is taken as a central permanent magnet rotor, and the others of the multiple permanent magnet rotors are divided into a first-layer permanent magnet rotor and a second-layer permanent magnet rotor by surrounding the central permanent magnet rotor, the first-layer permanent magnet rotor and the second-layer permanent magnet rotor are arranged in a layered manner, one or more permanent magnet rotors are connected with an outside drive device, one or more stator windings are respectively arranged around each permanent magnet rotor, three permanent magnet rotors respectively surround the central permanent rotor and the first-layer permanent magnet rotor, three groups of stator windings are respectively and evenly arranged around each permanent magnet rotor, each stator winding passes through a rectifier and then is connected with one another in parallel, circuits connected in parallel are provided with an electrical energy output terminal, and an accumulation voltage stabilizer and a DC/AC inverter are arranged behind the electrical energy output terminal. In the utility model, compared with the normally used permanent magnet generator, the efficiency of the permanent magnet generator with multiple rotors can be improved by more than 10%, the energy consumption and the discharge of greenhouse gasses are reduced, and the economic benefit and social benefit are remarkable.
Description
Technical field
The utility model relates to a kind of permanent magnet generator, particularly a kind of many rotors permanent magnet generator.
Background technology
Magneto-electric generator is compared with common excitation-type generator, has lot of advantages, as: simple in structure, reliability is high, volume is little, power generation performance is good during in light weight, the big or middle low speed of specific power, efficient is high, therefore, in, obtained in the small-scale Blast Furnace Top Gas Recovery Turbine Unit (TRT) using widely.In the general permanent magnet generator, a p-m rotor only is set, the rotating magnetic field of p-m rotor is not fully utilized during work, has caused the waste of portion of energy.
The utility model content
The rotating magnetic field of p-m rotor when working in order to make full use of permanent magnet generator, further improve the efficient of permanent magnet generator, the utility model proposes a kind of many rotors permanent magnet generator, the technical scheme that is adopted is: many rotors permanent magnet generator, comprise shell, p-m rotor, stator and stator winding, p-m rotor is a plurality of, each p-m rotor is provided with one or more pairs of permanent magnet poles, with a p-m rotor in a plurality of p-m rotors as the center p-m rotor, axle center with the center p-m rotor is that concentric circles is made as first concentric circles in the center of circle, a plurality of p-m rotors evenly are set as the ground floor p-m rotor on first concentric circles, axle center with each ground floor p-m rotor is that the center of circle is made concentric circles respectively as each second concentric circles, on each second concentric circles, a plurality of p-m rotors are set as second layer p-m rotor, the second layer p-m rotor number that is provided with on each second concentric circles is identical or inequality, second layer p-m rotor and center p-m rotor evenly are provided with along circumference with respect to the ground floor p-m rotor, each p-m rotor is in the effective range in contiguous each p-m rotor magnetic field, around each p-m rotor one or more groups stator winding is set respectively, stator winding is electrically connected by two stator coils that are symmetrical in p-m rotor to be formed, stator winding is in the effective range of the magnetic field of the p-m rotor that is centered on, the electric connection structure of two stator coils is p-m rotor when rotation, around the electric weight of two stator coils of the same stator winding of p-m rotor with being in series or with being in parallel.
The center p-m rotor is connected with external driver device, a perhaps p-m rotor in ground floor p-m rotor, the second layer p-m rotor, or a plurality of p-m rotors of layer are connected with external driver device together, when a plurality of p-m rotors of layer are connected with external driver device together, external driver device is the drive unit that is provided with a plurality of synchronous output ends, and a plurality of synchronous output ends of drive unit are connected with a plurality of p-m rotors of same layer respectively.
Ground floor p-m rotor number is an odd number, and each second layer p-m rotor number is respectively even number.
Around the p-m rotor that is connected with external driver device or apart from the diameter of the nearer p-m rotor of the p-m rotor that is connected with external driver device, the diameter of the p-m rotor that the p-m rotor that is connected with external driver device more than or equal to distance is far away.
Center p-m rotor, ground floor p-m rotor are identical with the number of magnetic poles of second layer p-m rotor.
The stator winding number of the p-m rotor that the p-m rotor that is connected with external driver device around the p-m rotor that is connected with external driver device or distance is nearer, more than or equal to stator winding number apart from the p-m rotor that is connected with external driver device p-m rotor far away, line around 2 stator coils of one or more groups stator winding of center p-m rotor, point to or point to respectively the axle center of next-door neighbour's ground floor p-m rotor, line around 2 stator coils of one group of stator winding of each ground floor p-m rotor, point to the axle center of next-door neighbour's center p-m rotor, around the line of 2 stator coils of one group of stator winding of each second layer p-m rotor, point to the axle center of each ground floor p-m rotor of next-door neighbour.
Each evenly is provided with 3 groups of stator winding respectively around center p-m rotor, each ground floor p-m rotor and each second layer p-m rotor.
Each evenly is provided with 3 groups of stator winding to center on center p-m rotor and ground floor p-m rotor, around each second layer p-m rotor 1 group of stator winding is set respectively.
Center p-m rotor and ground floor p-m rotor are set, the ground floor p-m rotor is a plurality of, around the center p-m rotor many group stator winding are set evenly, stator winding number around the center p-m rotor is identical with ground floor p-m rotor number, 1 group of stator winding respectively is set or organizes stator winding more around each ground floor p-m rotor.
The output that centers on each stator winding of each p-m rotor setting is provided with rectifying device respectively, and the output of described each rectifying device is connected in parallel, and on the circuit that is connected in parallel electric energy output end is set.
Many rotors permanent magnet generator of the present utility model, the technique effect that adopts technique scheme to obtain is: many rotors permanent magnet generator is provided with a plurality of p-m rotors, each p-m rotor is provided with one or more pairs of permanent magnet poles, with one of them p-m rotor as the center p-m rotor, axle center with the center p-m rotor is that concentric circles is made as first concentric circles in the center of circle, a plurality of p-m rotors evenly are set as the ground floor p-m rotor on first concentric circles, axle center with each ground floor p-m rotor is that the center of circle is made concentric circles respectively as each second concentric circles, on each second concentric circles, a plurality of p-m rotors are set as second layer p-m rotor, the second layer p-m rotor number that is provided with on each second concentric circles is identical or inequality, second layer p-m rotor and center p-m rotor evenly are provided with along circumference with respect to the ground floor p-m rotor, each p-m rotor is in the effective range in contiguous each p-m rotor magnetic field, can make full use of external driver device and drive the formed rotating magnetic field of one or more p-m rotors, magnetic engagement by each p-m rotor magnetic pole, each p-m rotor rotates simultaneously, each p-m rotor is provided with one or more pairs of permanent magnet poles, can adapt to the situation that the external driver device rotating speed is higher or rotating speed is lower respectively, to obtain best generating effect.Around each p-m rotor one or more groups stator winding is set respectively, stator winding is electrically connected by two stator coils that are symmetrical in p-m rotor to be formed, stator winding is in the effective range of the magnetic field of the p-m rotor that is centered on, can utilize the rotating magnetic field of each p-m rotor, cut each stator winding respectively, produce electric energy.When the electric connection structure of two stator coils is the p-m rotor rotation, around the electric weight of two stator coils of the same stator winding of p-m rotor with being in series or with being in parallel, can be according to use needs to electric energy, when the needs higher voltage, the stator coil that adopts same stator winding is with the mode that is in series, when the bigger electric current of needs, the stator coil that adopts same stator winding is with the mode that is in parallel.
The center p-m rotor is connected with external driver device, a perhaps p-m rotor in ground floor p-m rotor, the second layer p-m rotor, or a plurality of p-m rotors of layer are connected with external driver device together, when a plurality of p-m rotors of layer are connected with external driver device together, external driver device is the drive unit that is provided with a plurality of synchronous output ends, and a plurality of synchronous output ends of drive unit are connected with a plurality of p-m rotors of same layer respectively.Center p-m rotor, ground floor p-m rotor or second layer p-m rotor can be selected to be connected with external driver device, when wherein being connected with external driver device with the ground floor p-m rotor, only need through the transmission of one-level magnetic, just can drive whole p-m rotors running generating, reduce the torque loss that repeatedly magnetic transmission causes.A plurality of p-m rotors with layer are connected with each synchronous output end of the external driver device with a plurality of synchronous output ends respectively, can carry out driven in synchronism to the p-m rotor with one deck, have improved synchronism and reliability with the p-m rotor running of one deck.
Ground floor p-m rotor number is an odd number, each second layer p-m rotor number is respectively even number, can make the p-m rotor that is positioned at the drive chain front end avoid driving simultaneously the p-m rotor of 2 drive chain rear ends, reduce the maximum instantaneous load, improve the stable working of motor.
The diameter of the p-m rotor that the p-m rotor that is connected with external driver device around the p-m rotor that is connected with external driver device or distance is nearer, more than or equal to diameter apart from the p-m rotor that is connected with external driver device p-m rotor far away, can adapt to from the drive chain front end to the drive chain rear end, the situation that driving moment reduces gradually makes respective rotor keep best generating state.
Center p-m rotor, ground floor p-m rotor are identical with the number of magnetic poles of second layer p-m rotor, and the rotation that can guarantee each p-m rotor synchronously, steadily helps the stable of output power.
The stator winding number of the p-m rotor that the p-m rotor that is connected with external driver device around the p-m rotor that is connected with external driver device or distance is nearer, more than or equal to stator winding number apart from the p-m rotor that is connected with external driver device p-m rotor far away, can not strengthen the torque consumption of the p-m rotor that is positioned at the back, guarantee the normal synchronized rotation of each p-m rotor.Line around 2 stator coils of one or more groups stator winding of center p-m rotor, point to or point to respectively the axle center of next-door neighbour's ground floor p-m rotor, line around 2 stator coils of one group of stator winding of each ground floor p-m rotor, point to the axle center of next-door neighbour's center p-m rotor, line around 2 stator coils of one group of stator winding of each second layer p-m rotor, point to the axle center of each ground floor p-m rotor of next-door neighbour, can make ground floor p-m rotor and second layer p-m rotor under the driving of drive chain upper level p-m rotor, the magnetic line of force that a stator winding cutting p-m rotor is respectively arranged in the position of driving moment maximum, realize best generating effect, simultaneously, when the position of magnetic pole of 2 adjacent p-m rotors is the series connection form, the magnetic field intensity of respective poles is strengthened to some extent, can improve the reliability that magnetic drives, stator winding is located on the strongest position of the magnetic field intensity of magnetic pole, can improve generating efficiency.
Each evenly is provided with 3 groups of stator winding respectively around center p-m rotor, each ground floor p-m rotor and each second layer p-m rotor, can make consistently or be bordering on unanimity, guarantee that total output voltage, electric current are steady around the electromotive force peak value of the stator winding of each p-m rotor.
Each evenly is provided with 3 groups of stator winding to center on center p-m rotor and ground floor p-m rotor, around each second layer p-m rotor 1 group of stator winding is set respectively, can reduce the load of each second layer p-m rotor of magnetic driving moment minimum, guarantee that each second layer p-m rotor rotates synchronously with center p-m rotor and each ground floor p-m rotor better.
Center p-m rotor and ground floor p-m rotor are set, the ground floor p-m rotor is a plurality of, can guarantee under the situation of the center of driving p-m rotor, the ground floor p-m rotor has enough torques to keep operate as normal, around the center p-m rotor many group stator winding are set evenly, stator winding number around the center p-m rotor is identical with ground floor p-m rotor number, 1 group of stator winding respectively is set or organizes stator winding more around each ground floor p-m rotor, can make each p-m rotor system works steady, and possess higher generating efficiency.
The output that centers on each stator winding of each p-m rotor setting is provided with rectifying device respectively, the output of each rectifying device is connected in parallel, on the circuit that is connected in parallel, electric energy output end is set, can avoid the different caused short circuit phenomenon of phase place of each stator winding electromotive force, and the AC energy rectification that each stator winding can be sent is that direct current energy compiles, and is beneficial to electric energy output.Back in electric energy output end can also be provided with the electric power storage stable-pressure device, the direct current that peak value is indefinite is converted to stable, continuous direct current, and store, use for DC load, the AC/DC inverter can also further be set, direct current energy is converted to AC energy, supplies with AC load use widely.
Use many rotors permanent magnet generator of the present utility model, compare with using conventional permanent magnet generator, efficient improves more than 10%, can reduce energy consumption and greenhouse gas emission, receives fairly obvious economic benefit and social benefit.
Description of drawings
Accompanying drawing 4 is that many rotors of the utility model permanent magnet generator is provided with center p-m rotor and 5 ground floor p-m rotors, around the center p-m rotor 5 groups of stator winding is set, and the structural representation of 3 groups of stator winding respectively is set around the ground floor p-m rotor.
Sign implication in the accompanying drawing is as follows:
1-center p-m rotor, 2-first concentric circles, 3-ground floor p-m rotor, 4-second concentric circles, 5-second layer p-m rotor, 6-stator winding.
Embodiment
Many rotors permanent magnet generator of the present utility model comprises shell, p-m rotor, stator and stator winding, and p-m rotor is a plurality of, and each p-m rotor is provided with one or more pairs of permanent magnet poles, and structure as shown in drawings.One of them p-m rotor is as center p-m rotor 1, axle center with center p-m rotor 1 is that concentric circles is made as first concentric circles 2 in the center of circle, on first concentric circles 2, a plurality of p-m rotors evenly are set as ground floor p-m rotor 3, axle center with each ground floor p-m rotor 3 is that the center of circle is made concentric circles respectively as each second concentric circles 4, on each second concentric circles 4, a plurality of p-m rotors are set as second layer p-m rotor 5, the quantity of the second layer p-m rotor 5 that is provided with on each second concentric circles 4 is identical or inequality, second layer p-m rotor 5 and center p-m rotor 1 evenly are provided with along circumference with respect to ground floor p-m rotor 3, each p-m rotor is in the effective range in contiguous each p-m rotor magnetic field, and under the structurally hands-off prerequisite, reduce the spacing of each next-door neighbour's p-m rotor as far as possible.Each p-m rotor is provided with one or more pairs of permanent magnet poles.Around each p-m rotor one or more groups stator winding 6 is set respectively, stator winding 6 is electrically connected by two stator coils that are symmetrical in p-m rotor to be formed, and stator winding 6 is in the effective range of the magnetic field of the p-m rotor that is centered on.In order to make ground floor p-m rotor 3 and second layer p-m rotor 5 obtain enough turning moments, stator winding is not established iron core, or only establishes the iron core of smaller size smaller and projected area, in order to avoid form magnetic screen, the p-m rotor rotary work that influence is peripheral.The electric connection structure of two stator coils is p-m rotor when rotation, around the electric weight of two stator coils of the same stator winding of p-m rotor with being in series or with being in parallel.
The quantity of ground floor p-m rotor 3 is odd number, the quantity of each second layer p-m rotor 5 is respectively even number, as a kind of embodiment, the quantity of ground floor p-m rotor 3 is 3, the quantity of second layer p-m rotor 5 is respectively 2, and shown in accompanying drawing 1, accompanying drawing 2 and accompanying drawing 3, another embodiment is to be provided with center p-m rotor 1 and ground floor p-m rotor 3, the quantity of ground floor p-m rotor 3 is 5, as shown in Figure 4.
Each p-m rotor in accompanying drawing 1, accompanying drawing 2, accompanying drawing 3 and accompanying drawing 4 illustrated embodiments all is provided with a pair of permanent magnet poles.According to the needs of structure and purposes, and the rotating speed of consideration p-m rotor, each p-m rotor also can be provided with many to permanent magnet poles.
Around the p-m rotor that is connected with external driver device or apart from the diameter of the nearer p-m rotor of the p-m rotor that is connected with external driver device, the diameter of the p-m rotor that the p-m rotor that is connected with external driver device more than or equal to distance is far away.External driver device drives center p-m rotor 1 in the accompanying drawing 4, and the diameter of center p-m rotor 1 is greater than the diameter of ground floor p-m rotor 3.
Around the p-m rotor that is connected with external driver device or apart from the stator winding number of the nearer p-m rotor of the p-m rotor that is connected with external driver device, the stator winding number of the p-m rotor that the p-m rotor that is connected with external driver device more than or equal to distance is far away.Line around 2 stator coils of one or more groups stator winding 6 of center p-m rotor 1, point to or point to respectively the axle center of next-door neighbour's ground floor p-m rotor 3, line around 2 stator coils of a stator winding 6 of each ground floor p-m rotor 3, point to the axle center of next-door neighbour's center p-m rotor 1, around the line of 2 stator coils of a stator winding 6 of each second layer p-m rotor 5, point to the axle center of each ground floor p-m rotor 3 of next-door neighbour.
The output that centers on each stator winding 6 of each p-m rotor setting is provided with rectifying device respectively, and the output of each rectifying device is connected in parallel, and on the circuit that is connected in parallel electric energy output end is set.Electric power storage stable-pressure device and AC/DC inverter can be set in the back of electric energy output end as required.
Many rotors permanent magnet generator of the present utility model is not restricted to the described embodiments, and every technical scheme of utilizing structure of the present utility model and principle to be obtained through conversion and replacement is all in protection range of the present utility model.
Claims (10)
1. many rotors permanent magnet generator, comprise shell, p-m rotor, stator and stator winding, it is characterized in that: described p-m rotor is a plurality of, each p-m rotor is provided with one or more pairs of permanent magnet poles, with a p-m rotor in a plurality of p-m rotors as the center p-m rotor, axle center with described center p-m rotor is that concentric circles is made as first concentric circles in the center of circle, on described first concentric circles, a plurality of p-m rotors evenly are set as the ground floor p-m rotor, axle center with each ground floor p-m rotor is that the center of circle is made concentric circles respectively as each second concentric circles, on described each second concentric circles, a plurality of p-m rotors are set as second layer p-m rotor, the second layer p-m rotor number that is provided with on described each second concentric circles is identical or inequality, described second layer p-m rotor and described center p-m rotor evenly are provided with along circumference with respect to described ground floor p-m rotor, described each p-m rotor is in the effective range in contiguous each p-m rotor magnetic field, around described each p-m rotor one or more groups stator winding is set respectively, described stator winding is electrically connected by two stator coils that are symmetrical in described p-m rotor to be formed, described stator winding is in the effective range of the magnetic field of the p-m rotor that is centered on, when the electric connection structure of described two stator coils was the rotation of described p-m rotor, the electric weight of two stator coils of described same stator winding around p-m rotor was with being in series or with being in parallel.
2. many rotors permanent magnet generator according to claim 1, it is characterized in that: described center p-m rotor is connected with external driver device, a p-m rotor in perhaps described ground floor p-m rotor, the described second layer p-m rotor, or a plurality of p-m rotors of layer are connected with external driver device together, when described a plurality of p-m rotors with layer are connected with external driver device, described external driver device is the drive unit that is provided with a plurality of synchronous output ends, and a plurality of synchronous output ends of described drive unit are connected with described a plurality of p-m rotors with layer respectively.
3. many rotors permanent magnet generator according to claim 1 is characterized in that: described ground floor p-m rotor number is an odd number, and described each second layer p-m rotor number is respectively even number.
4. many rotors permanent magnet generator according to claim 1, it is characterized in that: around the p-m rotor that is connected with external driver device or apart from the diameter of the nearer p-m rotor of the p-m rotor that is connected with external driver device, the diameter of the p-m rotor that the p-m rotor that is connected with external driver device more than or equal to distance is far away.
5. many rotors permanent magnet generator according to claim 1 is characterized in that: described center p-m rotor, each ground floor p-m rotor are identical with the number of magnetic poles of each second layer p-m rotor.
6. many rotors permanent magnet generator according to claim 1, it is characterized in that: the stator winding number of the p-m rotor that the p-m rotor that is connected with external driver device around the p-m rotor that is connected with external driver device or distance is nearer, more than or equal to stator winding number apart from the p-m rotor that is connected with external driver device p-m rotor far away, the line of 2 stator coils of described one or more groups stator winding around the center p-m rotor, point to or point to respectively the axle center of next-door neighbour's ground floor p-m rotor, the line of 2 stator coils of a described stator winding around each ground floor p-m rotor, point to the axle center of next-door neighbour's described center p-m rotor, the line of 2 stator coils of a described stator winding around each second layer p-m rotor points to the axle center of described each ground floor p-m rotor of next-door neighbour.
7. many rotors permanent magnet generator according to claim 6 is characterized in that: each evenly is provided with 3 groups of stator winding respectively around described center p-m rotor, each ground floor p-m rotor and each second layer p-m rotor.
8. many rotors permanent magnet generator according to claim 6 is characterized in that: each evenly is provided with 3 groups of stator winding to center on described center p-m rotor and ground floor p-m rotor, around each second layer p-m rotor 1 group of stator winding is set respectively.
9. many rotors permanent magnet generator according to claim 1, it is characterized in that: center p-m rotor and ground floor p-m rotor are set, the ground floor p-m rotor is a plurality of, around described center p-m rotor many group stator winding are set evenly, described stator winding number around the center p-m rotor is identical with ground floor p-m rotor number, 1 group of stator winding respectively is set or organizes stator winding more around each ground floor p-m rotor.
10. many rotors permanent magnet generator according to claim 1, it is characterized in that: the output that centers on each stator winding of described each p-m rotor setting is provided with rectifying device respectively, the output of described each rectifying device is connected in parallel, and on the described circuit that is connected in parallel electric energy output end is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920172923XU CN201490855U (en) | 2009-08-17 | 2009-08-17 | Permanent magnet generator with multiple rotors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920172923XU CN201490855U (en) | 2009-08-17 | 2009-08-17 | Permanent magnet generator with multiple rotors |
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| Publication Number | Publication Date |
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| CN201490855U true CN201490855U (en) | 2010-05-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200920172923XU Expired - Fee Related CN201490855U (en) | 2009-08-17 | 2009-08-17 | Permanent magnet generator with multiple rotors |
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| CN (1) | CN201490855U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103828202A (en) * | 2011-07-05 | 2014-05-28 | 瑟尔瑞株式会社 | Independent power generator assembly and power generator system using same |
| CN104734443A (en) * | 2015-02-15 | 2015-06-24 | 郑州匠芯电子科技有限公司 | Friction-free generation device driven by magnetic attraction force |
| WO2019089435A1 (en) * | 2017-10-30 | 2019-05-09 | Deak David Sr | Magnetic momentum transfer generator |
| USRE49840E1 (en) | 2012-04-06 | 2024-02-13 | Wepower Technologies Llc | Electrical generator with rotational gaussian surface magnet and stationary coil |
| US11973391B2 (en) | 2020-11-20 | 2024-04-30 | Wepower Technologies Llc | Tangentially actuated magnetic momentum transfer generator |
-
2009
- 2009-08-17 CN CN200920172923XU patent/CN201490855U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103828202A (en) * | 2011-07-05 | 2014-05-28 | 瑟尔瑞株式会社 | Independent power generator assembly and power generator system using same |
| USRE49840E1 (en) | 2012-04-06 | 2024-02-13 | Wepower Technologies Llc | Electrical generator with rotational gaussian surface magnet and stationary coil |
| CN104734443A (en) * | 2015-02-15 | 2015-06-24 | 郑州匠芯电子科技有限公司 | Friction-free generation device driven by magnetic attraction force |
| WO2019089435A1 (en) * | 2017-10-30 | 2019-05-09 | Deak David Sr | Magnetic momentum transfer generator |
| US11251007B2 (en) | 2017-10-30 | 2022-02-15 | Wepower Technologies Llc | Magnetic momentum transfer generator |
| US11915898B2 (en) | 2017-10-30 | 2024-02-27 | Wepower Technologies Llc | Magnetic momentum transfer generator |
| US11973391B2 (en) | 2020-11-20 | 2024-04-30 | Wepower Technologies Llc | Tangentially actuated magnetic momentum transfer generator |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20130817 |