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Rotating Electric Machine
| Content Provider | The Lens |
|---|---|
| Abstract | The present invention is capable of simultaneously being in an electrically driven mode and a power generation mode that share a single machine and a single rotor 5 and of continuously generating power. A rotating electric machine has: a freely rotatable rotor having permanent magnets circumferentially arranged thereon and a first magnetic field part and second magnetic field part respectively formed on the outer and inner surfaces of the rotor; a first stator that opposes the first magnetic field part, which is on the outer peripheral surface of the rotor, and is provided with a coil for generating a first stator magnetic field; a second stator that opposes the second magnetic field part, which is on the inner peripheral surface of the rotor, and is provided with a coil for generating a second stator magnetic field; and a case that fixes the first stator and second stator and surrounds the rotor. The rotating electric machine has a control unit provided with: a power supply device that supplies power to the coil of the first stator or the second stator so as to drive the rotation of the rotor; and a power collection device for drawing out the induced current generated in the other coil by the rotation of the driven rotor. At least the coil of the stator on the power supply side is formed from a superconductor, and the current supplied to this superconductor coil is made to be greater than the induced current generated by the coil of the other stator. |
| Related Links | https://www.lens.org/lens/patent/012-086-414-310-515/frontpage |
| Language | English |
| Publisher Date | 2017-11-01 |
| Access Restriction | Open |
| Alternative Title | Elektrische Rotationsmaschine Machine Électrique Tournante |
| Content Type | Text |
| Resource Type | Patent |
| Date Applied | 2015-02-13 |
| Agent | Lemcke, Brommer & Partner Patentanwälte Partnerschaft Mbb |
| Applicant | Kitada Rotary Enjine Llc |
| Application No. | 15872310 |
| Claim | An electric rotating machine comprising: a rotatable rotor having first magnetic field parts and second magnetic field parts formed in front and rear surfaces, respectively, by arranging permanent magnets in a circumferential direction; a first stator equipped with coils opposing the first magnetic field parts disposed in an outer peripheral surface of the rotor, the coils forming first stator magnetic fields; a second stator equipped with coils opposing the second magnetic field parts disposed in an inner peripheral surface of the rotor, the coils forming second stator magnetic fields; and a case for fixing the first stator and the second stator and surrounding the rotor, the electric rotating machine further comprising a controller having a power feeder for driving the rotor to rotate by supplying power to the coils of one of the first stator and the second stator, and a power collector for extracting an induced current generated in the coils of the other stator resulting from rotation of the driven rotor, wherein at least the coils of the stator disposed on the power supply side are formed by a superconducting material, a current supplied to the superconducting coils being made larger than an induced current generated in the coils of the other stator. The electric rotating machine according to claim 1, wherein: the controller has a superconducting control unit having a persistent current switch and a current limiter; and a persistent current can be supplied to the superconducting coils disposed on the power supply side. The electric rotating machine according to claim 1, wherein: the rotor has a circular tube part to form the first magnetic field parts and the second magnetic field parts, and an output shaft part coupled to the circular tube part, the output shaft part being rotatably supported by the case and capable of transmitting power to an external rotary member disposed outside the case; and the controller is capable of collecting power from the coils of the other stator, while maintaining power supply to the superconducting coils and maintaining extraction of a driving force from the output shaft part. The electric rotating machine according to claim 1, wherein: the rotor is formed into a cylindrical body with the circular tube part having the first magnetic field parts and the second magnetic field parts, the circular tube part having both free ends; and between the first stator or the second stator and the rotor, magnetic gap forming means adapted to form a radial gap and magnetic position setting means adapted to optimize an axially relative position are provided. The electric rotating machine according to claim 4, wherein the power feeder is capable of exciting a plurality of pole to the same polarity simultaneously at regular intervals in the circumferential direction of the stator by currents, the currents being supplied to the coils on the power supply side. The electric rotating machine according to claim 4, wherein induced electromotive in the coils on the power collection side can generate the same polarity simultaneously on a plurality of poles at regular intervals in the circumferential direction of the stator. The electric rotating machine according to claim 6, wherein each of the coils provided at circumferential intervals in the stator on the power collection side has a main loop and a sub-loop wound oppositely to the main loop, the main loop and the sub-loop being adjacent to each other in the axial direction of the stator and connected in the shape of 8, the main loop having a larger area to oppose the permanent magnets of the rotor than the sub-loop. The electric rotating machine according to claim 4, further comprising gap holding means adapted to form a radial gap between the rotor and the first stator or the second stator at stopping of the rotor or during low-speed rotation of the rotor. The electric rotating machine according to claim 4, wherein a plurality of groups each including the rotor, the first stator and the second stator are provided in the axial direction of the rotor, one of the rotors having both free ends and the other rotor having an end part coupled to an output shaft part protruding outside the case. The electric rotating machine according to claim 1 or 4, wherein the first magnetic field parts and the first stator are set to an AC current frequency on the power supply side and the power generation side differently from the second magnetic field parts and the second stator. The electric rotating machine according to claim 1 or 4, wherein the electric rotating machine comprises a superconducting cooling apparatus for cooling the superconducting coils to a critical temperature or lower, the superconducting cooling apparatus having a coolant tank for storing a coolant, the coolant tank storing superconducting coils for power storage. The electric rotating machine according to claim 1 or 4, wherein: the coils of both of the first stator and the second stator are formed by a superconducting material; the permanent magnets are embedded in the rotor to form the first magnetic field parts and the second magnetic field parts in both ends thereof at the front and rear of the rotor; the permanent magnets are excited to a pole different from that of the superconducting coils of both of the first stator and the second stator and magnetized to a superconducting bulk embedded in the rotor, while or after bringing the superconducting bulk to a critical temperature. |
| CPC Classification | DYNAMO-ELECTRIC MACHINES Reduction Of Greenhouse Gas [Ghg] Emissions; Related To Energy Generation; Transmission Or Distribution |
| Extended Family | 097-718-436-231-363 191-428-039-523-030 002-644-363-046-777 101-510-683-390-038 167-281-965-716-794 073-339-242-590-017 049-978-634-587-010 192-464-747-218-736 059-558-606-779-965 044-211-004-298-85X 012-086-414-310-515 137-492-219-230-073 121-802-515-788-979 198-632-892-935-377 |
| Patent ID | 3240163 |
| Inventor/Author | Kitada Yasuo |
| IPC | H02K16/04 H02K1/27 H02K15/03 H02K21/12 H02K21/48 |
| Status | Active |
| Simple Family | 097-718-436-231-363 002-644-363-046-777 101-510-683-390-038 191-428-039-523-030 167-281-965-716-794 073-339-242-590-017 049-978-634-587-010 192-464-747-218-736 059-558-606-779-965 044-211-004-298-85X 012-086-414-310-515 137-492-219-230-073 121-802-515-788-979 198-632-892-935-377 |
| CPC (with Group) | H02K47/20 H02K3/28 H02K7/08 H02K7/09 H02K9/20 H02K16/04 H02K55/02 Y02E40/60 |
| Issuing Authority | United States Patent and Trademark Office (USPTO) |
| Kind | Patent Application Publication |
