CN113013918A - Alternating current excitation transformation method and system for grid-connected direct current excitation synchronous generator set - Google Patents
Alternating current excitation transformation method and system for grid-connected direct current excitation synchronous generator set Download PDFInfo
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- CN113013918A CN113013918A CN202110172042.3A CN202110172042A CN113013918A CN 113013918 A CN113013918 A CN 113013918A CN 202110172042 A CN202110172042 A CN 202110172042A CN 113013918 A CN113013918 A CN 113013918A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/38—Arrangements for parallely feeding a single network by two or more generators, converters or transformers
- H02J3/381—Dispersed generators
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/04—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for rectification
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K13/00—Structural associations of current collectors with motors or generators, e.g. brush mounting plates or connections to windings; Disposition of current collectors in motors or generators; Arrangements for improving commutation
- H02K13/003—Structural associations of slip-rings
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/0006—Disassembling, repairing or modifying dynamo-electric machines
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K15/00—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
- H02K15/02—Methods or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines of stator or rotor bodies
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K19/00—Synchronous motors or generators
- H02K19/16—Synchronous generators
- H02K19/26—Synchronous generators characterised by the arrangement of exciting windings
Abstract
The invention discloses an alternating current excitation transformation method and system of a grid-connected direct current excitation synchronous generator set. The system comprises a direct-current excitation synchronous generator, a rotor alternating-current winding, a rotor iron core, an alternating-current, direct-current and alternating-current bidirectional converter, an electric brush, a slip ring, a measurement control system, a prime motor and a transmission mechanism thereof. The invention reserves most of the devices and components of the original synchronous generating system, only replaces the main rotor magnetic pole of the original synchronous generating set with the rotor AC winding and the rotor iron core with the same pole number as the stator winding, and has less modification to the original system and lower modification cost. The invention has simple and easy technical means, and the rotating speed of the rotating magnetic field on the rotor is consistent with the rotating speed of the rotating magnetic field of the stator by controlling the alternating current exciting current parameters when the rotor operates at different rotating speeds, thereby improving the operating efficiency of a prime motor and the whole power generation system, improving the operating condition of the original synchronous generator set and improving the operating stability of the generator set.
Description
Technical Field
The invention relates to the field of direct current excitation and alternating current excitation power generation, in particular to an alternating current excitation transformation method and system of a grid-connected direct current excitation synchronous generator set.
Background
The synchronous generator set has the advantages of large capacity, adjustable active power and reactive power and the like, and is widely applied to energy development of hydroelectric power generation, wind power generation, thermal power generation and the like. Because of the constraints of conditions such as power grid frequency, power grid operation and the like, prime movers driving the synchronous generators always operate at synchronous rotating speed and cannot always operate at optimal rotating speed, so that the working condition of the generator set is deteriorated, the efficiency is reduced, and the safe operation of the generator set is influenced.
With the development of energy development, variable speed power generation is widely used in the development of clean energy such as wind power generation, tidal power generation, and wave power generation in order to improve the energy conversion efficiency of a prime mover.
Disclosure of Invention
The invention aims to provide an alternating current excitation transformation method and system of a direct current excitation synchronous generator set by combining the advantages of the prior art, so that the operation efficiency of a prime motor and the whole generator set is improved, the operation working condition of the original synchronous generator set is improved, the capacity of the generator set is improved, and the operation stability of the generator set is improved.
The purpose of the invention is realized by at least one of the following technical solutions.
The alternating current excitation transformation system of the grid-connected direct current excitation synchronous generator set comprises a direct current excitation synchronous generator, a rotor alternating current winding, a rotor iron core, an alternating current-direct current-alternating current bidirectional converter, an electric brush, a slip ring, a measurement control system, a prime motor and a transmission mechanism thereof;
a stator winding of the direct-current excitation synchronous generator is connected with an alternating-current power grid; the rotor iron core and the rotor alternating-current winding are arranged on a magnetic pole iron core on a main magnetic pole of a rotor of the direct-current excitation synchronous generator before transformation and the positions of the direct-current excitation winding, and the rotor alternating-current winding is arranged in a rotor iron core groove; the rotor AC winding is connected with an AC-DC-AC bidirectional converter through an electric brush and a slip ring; the base of the direct-current excitation synchronous generator and auxiliary components such as ventilation and heat dissipation of the base are unchanged;
the AC-DC-AC bidirectional converter provides AC exciting current with controllable frequency, size, phase and phase sequence for the rotor AC winding through the electric brush and the slip ring according to the running rotating speeds of the prime mover, and the rotating speed of a rotating magnetic field generated by the AC exciting current is superposed with the rotating speed of the rotor and is always the same as the rotating speed of the rotating magnetic field generated by the stator winding, so that the prime mover runs in a high-efficiency area all the time;
the electric brush is arranged on a machine base shell of the direct current excitation synchronous generator, is connected with the alternating current-direct current-alternating current bidirectional converter and is in sliding contact with the slip ring;
the slip ring is arranged on a shaft of a rotor of the direct-current excitation synchronous generator, is connected with the alternating-current winding and is in sliding contact with the electric brush;
the prime motor and the transmission mechanism thereof are used for driving the rotor of the direct current excitation synchronous generator to rotate.
Further, the rotor iron core and the rotor alternating-current winding are used for replacing a magnetic pole iron core and a direct-current excitation winding thereof on the main magnetic pole of the rotor of the direct-current excitation synchronous generator before transformation.
Further, in the prime mover and the transmission mechanism thereof, the prime mover includes a water turbine, a steam turbine, a wind turbine or an internal combustion engine.
Further, the number of poles of the rotor ac winding is the same as the number of poles of the stator winding.
Furthermore, the measurement control system is used for monitoring the operation state and parameters of the whole power generation system, measuring and controlling the rotating speed of the prime mover and the generator rotor, and further adjusting the alternating current exciting current parameters output by the alternating current-direct current-alternating current bidirectional converter, so that the whole power generation system can operate safely and stably.
Further, the number of phases of the rotor ac winding and the ac-dc-ac bidirectional converter is 3, or may be multiple phases.
Further, when the rotating speed of the generator rotor is higher than the synchronous rotating speed, the measurement control system adjusts the phase sequence and the frequency of the alternating current exciting current, so that the rotating magnetic field direction generated by the alternating current exciting current on the alternating current winding of the rotor is opposite to the rotating direction of the rotor; when the rotating speed of the rotor of the generator is lower than the synchronous rotating speed, adjusting the phase sequence and the frequency of the alternating current exciting current to ensure that the rotating magnetic field direction of the alternating current exciting current generated on the alternating current winding of the rotor is the same as the rotating direction of the rotor, and the rotating speed of the rotating magnetic field generated by the alternating current exciting current is superposed with the rotating speed of the rotor and is always the same as the rotating speed of the rotating magnetic field generated by the stator winding;
the measurement control system adjusts the magnitude and the phase of the alternating current excitation current according to the mechanical power input by the prime motor, and further adjusts the rotating speed of the generator rotor, so that the prime motor always runs at the optimal rotating speed.
An alternating current excitation transformation method of a grid-connected direct current excitation synchronous generator set comprises the following steps:
s1, detaching a main rotor pole of the direct-current excitation synchronous generator from a generator rotor, wherein the main rotor pole comprises a pole core and a direct-current excitation winding;
s2, the stator core of the direct-current excitation synchronous generator is unchanged; if the pole number of the stator winding is not changed, a rotor iron core and a rotor alternating current winding are installed at the position of the main magnetic pole of the primary rotor, and the pole number of the rotor alternating current winding is the same as that of the stator winding; if the pole number of the stator winding is changed according to the optimal rotating speed interval of the prime motor, the pole number of the rotor alternating current winding is the same as the pole number of the changed stator winding; the base of the direct-current excitation synchronous generator and auxiliary components such as ventilation and heat dissipation of the base are unchanged;
s3, mounting the rotor alternating-current winding in a slot of a rotor iron core;
s3, arranging an AC-DC-AC bidirectional converter, and providing AC exciting current with controllable frequency, size, phase and phase sequence for the AC winding of the rotor through an electric brush and a slip ring according to each running rotating speed of the prime motor;
when the rotating speed of the generator rotor is higher than the synchronous rotating speed, adjusting the phase sequence and frequency of the alternating current excitation current to enable the rotating magnetic field direction generated by the alternating current excitation current on the rotor alternating current winding to be opposite to the rotor direction;
and S4, monitoring the running state and parameters of the whole power generation system by using the measurement control system, and measuring and controlling the rotating speed of the prime mover and the generator rotor so as to adjust the frequency, the size, the phase and the phase sequence of the alternating current exciting current output by the alternating current-direct current-alternating current bidirectional converter.
Compared with the prior art, the method has the following advantages and effects:
the invention is simple and easy to realize.
The invention reserves most of the devices and components of the original synchronous generating system, only replaces the main rotor magnetic pole (including the magnetic pole iron core and the direct current excitation winding) of the original synchronous generating set with the rotor alternating current winding and the rotor iron core with the same pole number as the stator winding, and has less modification to the original system and lower modification cost.
As mentioned above, the technical means of the invention is simple and easy to implement, when the rotor runs at different rotating speeds, the rotating speed of the rotating magnetic field on the rotor is consistent with the rotating speed of the rotating magnetic field of the stator by controlling the alternating current exciting current parameters, thereby improving the operating efficiency of the prime motor and the whole power generation system, improving the operating condition of the original synchronous generator set and improving the operating stability of the generator set.
Drawings
Fig. 1 is a structural diagram of a dc excitation synchronous power generation system before modification in the embodiment of the present invention.
Fig. 2 is a structural diagram of an ac excitation power generation system after modification in the embodiment of the present invention.
Detailed Description
The following describes the object of the present invention in further detail with reference to the drawings and specific examples, which are not repeated herein, but the embodiments of the present invention are not limited to the following examples.
Example (b):
an ac excitation transformation system of a grid-connected dc excitation synchronous generator set, as shown in fig. 2, includes a dc excitation synchronous generator, a rotor ac winding 5, a rotor core 6, an ac-dc-ac bidirectional converter 7, an electric brush 8, a slip ring 9, a measurement control system 10, and a prime mover and its transmission mechanism 12;
a stator winding 2 of the direct-current excitation synchronous generator is connected with an alternating-current power grid; the rotor iron core 6 and the rotor alternating current winding 5 are arranged at the positions of the magnetic pole iron core 3 and the direct current excitation winding 4 on the main magnetic pole of the rotor of the direct current excitation synchronous generator before transformation, and the rotor alternating current winding 5 is arranged in a slot of the rotor iron core 6; the rotor alternating current winding 5 is connected with an alternating current-direct current-alternating current bidirectional converter 7 through an electric brush 8 and a slip ring 9; the base, the bearing, the ventilation and the heat dissipation of the DC excitation synchronous generator and other auxiliary components 11 are unchanged.
The AC-DC-AC bidirectional converter 7 provides AC exciting current with controllable frequency, magnitude, phase and phase sequence for the rotor AC winding 5 through the electric brush 8 and the slip ring 9 according to each running rotating speed of the prime motor, and the rotating speed of a rotating magnetic field generated by the AC exciting current is superposed with the rotating speed of the rotor and is always the same as the rotating speed of the rotating magnetic field generated by the stator winding 2, so that the prime motor is always operated in a high-efficiency area;
the electric brush 8 is arranged on a machine base shell of the direct current excitation synchronous generator, is connected with the alternating current-direct current-alternating current bidirectional converter 7 and is in sliding contact with the slip ring 9;
the slip ring 9 is arranged on a shaft of a rotor of the direct-current excitation synchronous generator, is connected with the alternating-current winding 5 and is in sliding contact with the electric brush 8;
the prime mover and its transmission 12 are used to drive the rotor of the dc excited synchronous generator into rotation.
In this embodiment, as shown in fig. 1, a 6-pole excitation synchronous generator is adopted in the dc excitation synchronous generator before modification, and includes a stator core 1, a stator winding 2, a base 11, a rotor core 6, and a rotor ac winding 5 for replacing a magnetic pole core 3 and a dc excitation winding 4 on a main magnetic pole of a rotor of the 6-pole excitation synchronous generator.
The prime mover and its transmission 12 are power equipment for driving the generator to rotate.
The number of poles of the rotor ac winding 5 is the same as the number of poles of the stator winding 2.
The measurement control system 10 is used for monitoring the operation state and parameters of the whole power generation system, measuring and controlling the rotation speed of the prime mover and the rotor of the direct current excitation synchronous generator, and further adjusting the alternating current excitation current parameters output by the alternating current-direct current-alternating current bidirectional converter 7, so that the whole power generation system can operate safely and stably.
The number of phases of the rotor ac winding 5 and the ac-dc-ac bidirectional converter 7 is 3, or may be multiple phases.
When the rotating speed of the generator rotor is higher than the synchronous rotating speed, the measurement control system 10 adjusts the phase sequence and the frequency of the alternating current exciting current, so that the rotating magnetic field direction of the alternating current exciting current generated on the rotor alternating current winding 5 is opposite to the rotor direction; when the rotating speed of the generator rotor is lower than the synchronous rotating speed, adjusting the phase sequence and the frequency of the alternating current exciting current to ensure that the rotating magnetic field direction generated by the alternating current exciting current on the rotor alternating current winding is the same as the rotor rotating direction phase, and the rotating magnetic field rotating speed generated by the alternating current exciting current is superposed with the rotating speed of the rotor and is always the same as the rotating magnetic field rotating speed generated by the stator winding 2;
the measurement control system 10 adjusts the magnitude and phase of the ac exciting current according to the mechanical power input by the prime mover, and further adjusts the rotational speed of the generator rotor, so that the prime mover is always operated at the optimum rotational speed.
An alternating current excitation transformation method of a grid-connected direct current excitation synchronous generator set comprises the following steps:
s1, detaching a main rotor pole of the direct-current excitation synchronous generator from a generator rotor, wherein the main rotor pole comprises a pole core 3 and a direct-current excitation winding 4;
s2, the stator core 1 of the direct-current excitation synchronous generator is unchanged; if the number of poles of the stator winding 2 is not changed, a rotor iron core 6 and a rotor alternating current winding 5 are arranged at the position of the main magnetic pole of the primary rotor, and the number of poles of the rotor alternating current winding 5 is the same as that of the stator winding 2; if the number of poles of the stator winding 2 is changed according to the optimal rotating speed interval of the prime motor, the number of poles of the rotor alternating current winding 5 is the same as the number of poles of the changed stator winding 2; the base 11 of the original direct-current excitation synchronous generator and auxiliary components such as ventilation and heat dissipation of the base are unchanged;
s3, mounting the rotor AC winding 5 in the slot of the rotor iron core 6;
s3, arranging an AC-DC-AC bidirectional converter 7, and providing AC exciting current with controllable frequency, size, phase and phase sequence for the rotor AC winding 5 through an electric brush 8 and a slip ring 9 according to each running rotating speed of the prime motor;
when the rotating speed of the generator rotor is higher than the synchronous rotating speed, adjusting the phase sequence and frequency of the alternating current excitation current to enable the rotating magnetic field direction generated by the alternating current excitation current on the rotor alternating current winding 5 to be opposite to the rotor direction, when the rotating speed of the generator rotor is lower than the synchronous rotating speed, adjusting the phase sequence and frequency of the alternating current excitation current to enable the rotating magnetic field direction generated by the alternating current excitation current on the rotor alternating current winding to be the same as the rotor direction, and after the rotating magnetic field rotating speed generated by the alternating current excitation current is superposed with the rotor rotating speed, the rotating magnetic field rotating speed is always the same as the rotating magnetic field rotating speed generated by the stator winding 2;
and S4, monitoring the running state and parameters of the whole power generation system by using the measurement control system 10, and measuring and controlling the rotating speed of the prime mover and the generator rotor so as to adjust the frequency, the size, the phase and the phase sequence of the alternating current exciting current output by the alternating current-direct current-alternating current bidirectional converter 7.
As described above, the present invention can be preferably realized.
The embodiments of the present invention are not limited to the above-described embodiments, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be construed as equivalents thereof, and they are included in the scope of the present invention.
Claims (8)
1. The alternating current excitation transformation system of the grid-connected direct current excitation synchronous generator set is characterized by comprising a direct current excitation synchronous generator, a rotor alternating current winding (5), a rotor iron core (6), an alternating current-direct current-alternating current bidirectional converter (7), an electric brush (8), a slip ring (9), a measurement control system (10), a prime motor and a transmission mechanism (12) thereof;
a stator winding (2) of the direct-current excitation synchronous generator is connected with an alternating-current power grid; a rotor iron core (6) and a rotor alternating current winding (5) are arranged at the positions of a magnetic pole iron core (3) on a main magnetic pole of a rotor of the direct current excitation synchronous generator before transformation and a direct current excitation winding (4) of the magnetic pole iron core, and the rotor alternating current winding (5) is arranged in a groove of the rotor iron core (6); the rotor alternating current winding (5) is connected with an alternating current-direct current-alternating current bidirectional converter (7) through an electric brush (8) and a slip ring (9);
the AC-DC-AC bidirectional converter (7) provides AC exciting current with controllable frequency, size, phase and phase sequence for the rotor AC winding (5) through the electric brush (8) and the slip ring (9) according to each running rotating speed of the prime motor, the rotating speed of a rotating magnetic field generated by the AC exciting current is superposed with the rotating speed of the rotor and is always the same as the rotating speed of the rotating magnetic field generated by the stator winding (2), and the prime motor is further enabled to run in a high-efficiency area all the time;
the electric brush (8) is arranged on the base of the original direct current excitation synchronous generator, is connected with the alternating current-direct current-alternating current bidirectional converter (7) and is in sliding contact with the slip ring (9);
the slip ring (9) is arranged on a rotating shaft of the generator, is connected with the alternating current winding (5) and is in sliding contact with the electric brush (8);
the prime mover and its drive mechanism (12) are used to drive the generator rotor in rotation.
2. The AC excitation reconstruction system of the grid-connected DC excitation synchronous generator set according to claim 1, characterized in that the rotor core (6) and the rotor AC winding (5) are used to replace the pole core (3) and the DC excitation winding (4) on the main pole of the DC excitation synchronous generator rotor before reconstruction.
3. The alternating-current excitation transformation system of the grid-connected direct-current excitation synchronous generator set according to claim 1, wherein in a prime mover and a transmission mechanism (12) thereof, the prime mover is power equipment for driving a generator to rotate.
4. The alternating current excitation transformation system of the grid-connected direct current excitation synchronous generator set according to claim 1, wherein the number of poles of the rotor alternating current winding (5) is the same as the number of poles of the stator winding (2).
5. The AC excitation transformation system of the grid-connected DC excitation synchronous generator set according to claim 1, wherein the measurement control system (10) is used for monitoring the operation state and parameters of the whole power generation system, measuring and controlling the rotation speed of a prime motor and a generator rotor, and further adjusting the AC excitation current parameters output by the AC-DC-AC bidirectional converter (7), so that the whole power generation system can operate safely and stably.
6. The system of claim 1, wherein the number of phases of the rotor AC winding (5) and the AC-DC-AC bidirectional converter (7) is 3 or more.
7. The alternating current excitation transformation system of the grid-connected direct current excitation synchronous generator set according to any one of claims 1 to 6, characterized in that when the rotating speed of a generator rotor is higher than the synchronous rotating speed, the measurement control system (10) adjusts the phase sequence and frequency of the alternating current excitation current to enable the rotating magnetic field generated by the alternating current excitation current on the rotor alternating current winding (5) to rotate in a direction opposite to the rotor rotation direction; when the rotating speed of the generator rotor is lower than the synchronous rotating speed, the phase sequence and the frequency of the alternating current exciting current are adjusted, so that the rotating magnetic field direction of the alternating current exciting current generated on the rotor alternating current winding is the same as the rotating direction of the rotor, and the rotating speed of the rotating magnetic field generated by the alternating current exciting current is superposed with the rotating speed of the rotor and is always the same as the rotating speed of the rotating magnetic field generated by the stator winding (2);
the measurement control system (10) adjusts the magnitude and phase of the alternating current exciting current according to the mechanical power input by the prime motor, and further adjusts the rotating speed of the generator rotor, so that the prime motor always runs at the optimal rotating speed.
8. The alternating-current excitation reconstruction method of the alternating-current excitation reconstruction system of the grid-connected direct-current excitation synchronous generator set based on claim 7 is characterized by comprising the following steps of:
s1, detaching a main rotor pole of the direct-current excitation synchronous generator from a generator rotor, wherein the main rotor pole comprises a pole core (3) and a direct-current excitation winding (4);
s2, the stator core (1) of the direct-current excitation synchronous generator is unchanged; if the number of poles of the stator winding (2) is not changed, a rotor iron core (6) and a rotor alternating current winding (5) are installed at the position of the main magnetic pole of the primary rotor, and the number of poles of the rotor alternating current winding (5) is the same as that of the stator winding (2); if the number of poles of the stator winding (2) is changed according to the optimal rotating speed interval of the prime motor, the number of poles of the rotor alternating current winding (5) is the same as the number of poles of the changed stator winding (2);
s3, mounting the rotor alternating current winding (5) in a slot of a rotor iron core (6);
s3, arranging an AC-DC-AC bidirectional converter (7), and providing AC exciting current with controllable frequency, size, phase and phase sequence for the rotor AC winding (5) through an electric brush (8) and a slip ring (9) according to each running rotating speed of a prime motor;
when the rotating speed of the generator rotor is higher than the synchronous rotating speed, the phase sequence and the frequency of the alternating current excitation current are adjusted, so that the rotating magnetic field direction generated by the alternating current excitation current on the rotor alternating current winding (5) is opposite to the rotor direction, when the rotating speed of the generator rotor is lower than the synchronous rotating speed, the phase sequence and the frequency of the alternating current excitation current are adjusted, so that the rotating magnetic field direction generated by the alternating current excitation current on the rotor alternating current winding is the same as the rotor direction, the rotating magnetic field rotating speed generated by the alternating current excitation current and the rotor rotating speed are superposed and are always the same as the rotating magnetic field rotating speed generated by the stator winding (2), the size and the phase of the alternating current excitation current are adjusted according to the mechanical power input by the prime motor, and then the rotating speed of the generator rotor;
and S4, monitoring the running state and parameters of the whole power generation system by adopting the measurement control system (10), and measuring and controlling the rotating speed of the prime motor and the generator rotor so as to adjust the frequency, the size, the phase and the phase sequence of the alternating current exciting current output by the alternating current-direct current-alternating current bidirectional converter (7).
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| CN202110172042.3A CN113013918A (en) | 2021-02-08 | 2021-02-08 | Alternating current excitation transformation method and system for grid-connected direct current excitation synchronous generator set |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101487453A (en) * | 2009-02-23 | 2009-07-22 | 东南大学 | Variable-speed constant-frequency wind power generation plant |
| CN106936282A (en) * | 2015-12-30 | 2017-07-07 | 华南理工大学 | A kind of synchronous generator asynchronization capacity-increasing transformation system based on rotary transformer |
| CN106936279A (en) * | 2015-12-30 | 2017-07-07 | 华南理工大学 | A kind of bimorph transducer asynchronization capacity-increasing transformation system of Synchronous generator |
| CN107707078A (en) * | 2017-11-01 | 2018-02-16 | 广州华南鑫沨能源科技有限公司 | A kind of double-fed asynchronous electricity generation system of changeable stream mode |
| CN108011403A (en) * | 2017-11-01 | 2018-05-08 | 广州华南鑫沨能源科技有限公司 | The expansion method and system of a kind of Synchronous generator |
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2021
- 2021-02-08 CN CN202110172042.3A patent/CN113013918A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101487453A (en) * | 2009-02-23 | 2009-07-22 | 东南大学 | Variable-speed constant-frequency wind power generation plant |
| CN106936282A (en) * | 2015-12-30 | 2017-07-07 | 华南理工大学 | A kind of synchronous generator asynchronization capacity-increasing transformation system based on rotary transformer |
| CN106936279A (en) * | 2015-12-30 | 2017-07-07 | 华南理工大学 | A kind of bimorph transducer asynchronization capacity-increasing transformation system of Synchronous generator |
| CN107707078A (en) * | 2017-11-01 | 2018-02-16 | 广州华南鑫沨能源科技有限公司 | A kind of double-fed asynchronous electricity generation system of changeable stream mode |
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