WO2019094179A1 - Système de génération d'énergie ayant une liaison à courant continu connectée à une borne de terre - Google Patents

Système de génération d'énergie ayant une liaison à courant continu connectée à une borne de terre Download PDF

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Publication number
WO2019094179A1
WO2019094179A1 PCT/US2018/056850 US2018056850W WO2019094179A1 WO 2019094179 A1 WO2019094179 A1 WO 2019094179A1 US 2018056850 W US2018056850 W US 2018056850W WO 2019094179 A1 WO2019094179 A1 WO 2019094179A1
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WO
WIPO (PCT)
Prior art keywords
generation system
power generation
link
ground terminal
transformer
Prior art date
Application number
PCT/US2018/056850
Other languages
English (en)
Inventor
Yashomani Y. Kolhatkar
Arvind Kumar Tiwari
Original Assignee
General Electric Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by General Electric Company filed Critical General Electric Company
Publication of WO2019094179A1 publication Critical patent/WO2019094179A1/fr

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output
    • H02P9/007—Control circuits for doubly fed generators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P9/00—Arrangements for controlling electric generators for the purpose of obtaining a desired output

Definitions

  • Embodiments of the present specification generally relate to a power generation system and, in particular, to a power generation system having a direct current (DC) link connected to a ground terminal.
  • DC direct current
  • DFIG doubly-fed induction generator
  • PV photovoltaic
  • the auxiliary power source is coupled to the DFIG via one or more power converter(s).
  • electrical power is generated by one or both of the DFIG and the auxiliary power sources. The electrical power thus generated is supplied to electrical loads and/or an electric grid coupled to the power generation system.
  • the auxiliary power source such as, the PV power source suffers from potential induced degradation (PID) due to leakage currents flowing to a ground.
  • PID potential induced degradation
  • the PV modules with a positive or negative voltage to the ground are exposed to the PID.
  • the PID may be accelerated due to increase in temperature and/or voltage of the PV power source. Disadvantageously, such PID leads to losses in the power generated by the PV power source.
  • a power generation system includes a doubly-fed induction generator (DFIG) operable via an engine, where the DFIG includes a stator winding and a rotor winding.
  • the power generation system further includes a point of common coupling (PCC) electrically coupled to the stator winding of the DFIG.
  • the power generation system also includes a rotor-side converter electrically connected to the rotor winding of the DFIG.
  • the power generation system includes a line-side converter electrically connected to the PCC.
  • the line-side converter is also electrically connected to the rotor-side converter via a direct-current (DC) link.
  • DC direct-current
  • the DC-link includes a plurality of electrical conductors, and where one electrical conductor of the plurality of electrical conductors of the DC-link is connected to a first ground terminal.
  • the power generation system includes a power source electrically coupled to the DC-link.
  • a power generation system includes a doubly-fed induction generator (DFIG) operable via an engine, where the DFIG includes a stator winding and a rotor winding.
  • the power generation system further includes a point of common coupling (PCC) electrically coupled to the stator winding of the DFIG.
  • the power generation system also includes a rotor-side converter electrically connected to the rotor winding of the DFIG.
  • the power generation system includes a line-side converter electrically connected to the PCC.
  • the line-side converter is also electrically connected to the rotor-side converter via a direct-current (DC) link.
  • DC direct-current
  • the DC-link includes a plurality of electrical conductors, and where one electrical conductor of the plurality of electrical conductors of the DC-link is connected to a first ground terminal.
  • the power generation system includes a transformer electrically connected between the line-side converter and the PCC. Additionally, the power generation system includes a power source electrically coupled to the DC-link.
  • FIG. 1 is a block diagram representation of a power generation system, in accordance with one embodiment of the present specification
  • FIGS. 2 A, 2B, and 2C represent schematic diagrams depicting a direct current (DC) link of the power generation system of FIG. 1 and connection of the DC-link with a ground terminal, in accordance with some embodiments of the present specification.
  • DC direct current
  • FIG. 3 is a block diagram representation of a power generation system, in accordance with another embodiment of the present specification.
  • FIG. 4 is a block diagram representation of a power generation system, in accordance with yet another embodiment of the present specification.
  • FIG. 5 is a schematic diagram representing an electrical equivalent of a doubly-fed induction generator (DFIG) employed in the power generation systems of FIGS. 1, 3, and/or 4, in accordance with one embodiment of the present specification.
  • DFIG doubly-fed induction generator
  • the terms “may” and “may be” indicate a possibility of an occurrence within a set of circumstances; a possession of a specified property, characteristic or function; and/or qualify another verb by expressing one or more of an ability, capability, or possibility associated with the qualified verb. Accordingly, usage of "may” and “may be” indicates that a modified term is apparently appropriate, capable, or suitable for an indicated capacity, function, or usage, while taking into account that in some circumstances, the modified term may sometimes not be appropriate, capable, or suitable.
  • a power generation system includes a doubly -fed induction generator (DFIG) operable via an engine, where the DFIG includes a stator winding and a rotor winding.
  • the power generation system further includes a point of common coupling (PCC) electrically coupled to the stator winding of the DFIG.
  • the power generation system also includes a rotor-side converter electrically connected to the rotor winding of the DFIG.
  • the power generation system includes a line-side converter electrically connected to the PCC.
  • the line-side converter is also electrically connected to the rotor-side converter via a direct-current (DC) link.
  • DC direct-current
  • the DC-link includes a plurality of electrical conductors, and where one electrical conductor of the plurality of electrical conductors of the DC-link is connected to a first ground terminal.
  • the power generation system includes a power source electrically coupled to the DC-link.
  • FIG. 1 is a block diagram representation of a power generation system 100 in accordance with one embodiment of the present specification.
  • the power generation system 100 may be configured to generate an alternating current (AC) electrical power and provide the AC electrical power from an output power port 102 of the power generation system 100.
  • the AC electrical power at the output power port 102 may be a single phase or multi -phase, for example, a three-phase electrical power.
  • the output power port 102 of the power generation system 100 may be connected to an electric grid (not shown).
  • a power generation system 100 is sometimes also interchangeably referred to as a "grid connected power generation system".
  • the electric grid may be representative of an interconnected network of electrical power sources, electrical power processing systems, and an electrical power distribution systems for delivering a grid power (e.g., electricity) from one or more power generation stations to consumers through high/medium voltage transmission lines.
  • the power generation system 100 is an islanded power generation system, sometimes also referred to as an isolated power generation system which not connected to the electric grid.
  • the isolated power generation system may be deployed where connection of power generation system to the electric grid is not desired or the electric grid is not available.
  • the output power port 102 of the power generation system 100 may be coupled to an electrical load (not shown).
  • the electrical load may include one or more devices/equipment that consumes electricity when operated.
  • the power generation system 100 may be coupled to both the electrical load and the electric grid.
  • the power generation system 100 includes one or more of an engine 104, a DFIG 106, a rotor-side converter 108, a line-side converter 110, a power source 112, a DC-link 114, and a PCC 116.
  • the power generation system 100 may optionally include a switching unit 118 disposed between the DFIG 106 and the PCC 116 to selectively connect the DFIG 106 to the PCC 116.
  • the power generation system 100 may also include a controller 120.
  • the controller 120 may be operatively coupled to one or more of the rotor-side converter 108, the line-side converter 110, the power source 112, and the switching unit 118 to control operations thereof by communicating appropriate control signals.
  • the controller 120 may include a specially programmed general-purpose computer, an electronic processor such as a microprocessor, a digital signal processor, and/or a microcontroller. Further, the controller 120 may include input/output ports, and a storage medium, such as an electronic memory.
  • a microprocessor include, but are not limited to, a reduced instruction set computing (RISC) architecture type microprocessor or a complex instruction set computing (CISC) architecture type microprocessor.
  • RISC reduced instruction set computing
  • CISC complex instruction set computing
  • the microprocessor may be a single-core type or multi-core type.
  • the controller 120 may be implemented as hardware elements such as circuit boards with processors or as software running on a processor such as a personal computer (PC), or a microcontroller.
  • the DFIG 106 is mechanically coupled to the engine 104.
  • the DFIG 106 is also electrically coupled to the PCC 116 via a link 122 and to the rotor-side converter 108 via a link 124, as depicted in FIG. 1.
  • the line-side converter 110 may be electrically coupled to the PCC 116 via a link 126 as shown in FIG. 1.
  • the line-side converter 110 is electrically coupled to the PCC 116 via the link 126 through a transformer ⁇ see FIG. 2).
  • Each of the links 122, 124, and 126 may be a multi-phase link, for example, a three-phase electrical link as shown in FIG. 1.
  • the PCC 116 may be connected to the output power port 102 of the power generation system 100.
  • the power generation system 100 may optionally include a transformer 128.
  • the transformer 128 may be connected between the PCC 116 and the output power port 102.
  • the engine 104 may be configured to aid in imparting a rotational motion to rotary element (e.g., a rotor) of the DFIG 106.
  • the engine 104 may be an internal combustion engine or an external combustion engine.
  • Non-limiting examples of the internal combustion engine that may be used as the engine 104 may include a reciprocating engine such as a diesel engine or a petrol engine, or a rotary engine such as a compressor or a gas turbine.
  • the engine 104 may be operated by combustion of various fuels including, but not limited to, diesel, natural gas, petrol, liquefied petroleum gas (LPG), liquefied natural gas (LNG), biogas, producer gas, and the like.
  • the engine 104 may also be operated using waste heat cycle.
  • the scope of the present specification is not limited with respect to the types of fuel and the engine 104 employed in the power generation system 100.
  • the engine 104 may be operable at variable speeds.
  • the engine 104 is also referred to as a variable speed engine.
  • the DFIG 106 is operable via the engine 104.
  • the DFIG 106 includes a stator winding 130 and a rotor winding 132.
  • the stator winding 130 may be wound on a stator 134.
  • the rotor winding 132 may be wound on a rotor 136.
  • both the stator winding 130 and the rotor winding 132 may be multi-phase windings such as a three-phase winding. Additional details of the stator winding 130 and the rotor winding 132 are described in conjunction with FIG. 5.
  • the DFIG 106 is mechanically coupled to the engine 104.
  • the rotor 136 of the DFIG 106 is mechanically coupled to a rotary element of the engine 104 via a shaft 138 such that rotations of the rotary element of the engine 104 cause rotations of the rotor 136 of the DFIG 106.
  • the rotor 136 of the DFIG 106 is operated at a rotational speed which may be a synchronous speed, a sub-synchronous speed, or a super-synchronous speed depending on the rotational speed of the rotary element of the engine 104.
  • a rotational speed which may be a synchronous speed, a sub-synchronous speed, or a super-synchronous speed depending on the rotational speed of the rotary element of the engine 104.
  • the synchronous speed of the rotor 136 may be defined using equation (1).
  • N s represents the synchronous speed of the rotor 136
  • p represents poles in the rotor 136
  • F represents a frequency of a stator voltage.
  • a sub-synchronous speed of the rotor 136 may be defined as a speed that is lower than the synchronous speed of the rotor 136.
  • a super-synchronous speed of the rotor 136 may be defined as a speed that is higher than the synchronous speed of the rotor 136.
  • the DFIG 106 is configured to generate an electrical power at the stator winding 130 depending on the rotational speed of the rotor 136.
  • the electrical power that is generated at the stator winding 130 is hereinafter alternatively referred to as a "stator power.”
  • the DFIG 106 is configured to generate or absorb electrical power at the rotor winding 132 depending on the rotational speed of the rotor 136.
  • the DFIG 106 is configured to generate electrical power at the rotor winding 132 when the rotor 136 is operated at a super-synchronous speed.
  • the DFIG 106 is configured to absorb the electrical power at the rotor winding 132 when the rotor 136 is operated at a sub -synchronous speed.
  • the electrical power that is generated or absorbed at the rotor winding 132 is hereinafter alternatively referred to as a "slip power.”
  • the magnitude of the slip power is dependent on a slip value of the DFIG 106.
  • the slip value S may be determined using equation (2).
  • the rotor-side converter 108 is electrically coupled to the rotor winding 132 of the DFIG 106 via the link 124.
  • the rotor-side converter 108 may be an AC -DC converter and configured to convert an AC power into a DC power and vice-versa.
  • the line-side converter 110 may be a DC-AC converter and configured to convert the DC power into an AC power and vice-versa.
  • each of the rotor-side converter 108 and the line-side converter 110 may include one or more switches, for example, semiconductor switches, configured to facilitate power conversion from AC to DC or vice-versa.
  • the rotor-side converter 108 is electrically connected to the line-side converter 110 via the DC-link 114.
  • the DC-link 114 includes a plurality of electrical conductors (see FIGS. 2A-2C).
  • the DC-link 114 may also include at least one DC-link capacitor (see FIGS. 2A- 2C) electrically coupled between two conductors of the DC-link 114.
  • One electrical conductor of the plurality of electrical conductors of the DC-link 114 is connected to a first ground terminal, hereinafter referred to as a ground terminal 140, of the power generation system 100. Additional details of the DC-link 114 and the connection of the DC-link 114 with the ground terminal 140 are described in conjunction with FIG. 2.
  • the power generation system 100 also includes the power source 112 that is coupled to the DC-link 114.
  • the power source 112 is capable of generating and/or supplying a secondary power such as a DC power to the DC-link 114.
  • the power source 112 may include an energy storage device, an auxiliary power source, or a combination thereof (see FIG. 3).
  • Non-limiting examples of auxiliary power source 348 may include a photovoltaic (PV) power source, a fuel cell, a renewable energy based power generator, a non-renewable energy based power generator, or combinations thereof. Further details of the power source 112 and the connection of the power source 112 with the DC-link 114 are described in conjunction with FIG. 3.
  • PV photovoltaic
  • connection of one conductor of the DC-link 114 to the ground terminal 140 may also facilitate a ground connection for the power source 112.
  • a separate ground connection for the power source 112 may not be required.
  • the connection of one conductor of the DC-link 1 14 to the ground terminal 140 may also enable use of an ungrounded power source as the power source 112 which may be cheaper in comparison to grounded power source.
  • the ungrounded PV power source may be connected to the DC-link 114.
  • an effect of potential induced degradation (PID) for the ungrounded power source 112 may be minimized or eliminated.
  • PID potential induced degradation
  • FIGS. 2A-2C schematic diagrams 202, 204, 206 depicting the DC-link 114 of the power generation system 100 of FIG. 1 and connection of the DC-link 114 with the ground terminal 140, in accordance with some embodiments of the present specification are presented.
  • the DC-link 114 includes a plurality of electrical conductors 208 and 210.
  • the DC-link 114 may additionally include an electrical conductor 212.
  • the electrical conductor 208 may represent a positive link-conductor maintained at a positive potential
  • the electrical conductor 210 may represent a negative link-conductor maintained at a negative potential
  • the electrical conductor 212 may represent a neutral terminal maintained at a neutral potential.
  • the neutral potential may be a zero potential.
  • One of the electrical conductors 208, 210, and 212 may be electrically connected to the ground terminal 140.
  • the DC-link 114 includes a capacitor 214 electrically connected between the electrical conductors 208 and 210. Moreover, the positive link-conductor (i.e., the electrical conductor 208) is connected to the ground terminal 140.
  • the DC-link 114 of FIG. 2B is similar to the DC-link of FIG. 2A. However, in the embodiment depicted in FIG. 2B, the negative link-conductor (i.e., the electrical conductor 210) is connected to the ground terminal 140.
  • the DC-link 114 includes two capacitors 216 and 218 coupled in series.
  • the series combination of the capacitors 216 and 218 is electrically connected between the electrical conductors 208 and 210, as depicted in FIG. 2C.
  • the electrical conductor 212 represents the neutral terminal which is an interconnection point of the capacitors 216 and 218. As depicted in FIG. 2C, the neutral terminal (i.e., the electrical conductor 212) is connected to the ground terminal 140.
  • the electrical conductor 212 is shown coupled to the ground terminal 140, any of the other electrical conductors 208 and 210 may also be coupled to the ground terminal 140, without limiting the scope of the present specification.
  • FIG. 3 is a block diagram representation of a power generation system 300, in accordance with another embodiment of the present specification.
  • the power generation system 300 of FIG. 3 is representative of one embodiment of the power generation system 100 of FIG. 1.
  • the power generation system 300 includes an additional element such as a transformer 302. Internal elements of the power source 112 are depicted in FIG. 3. It may be noted that the components of the power generation system 300 that are already described in FIG. 1 are not described again in FIG. 3.
  • the transformer 302 includes a primary side 304 and a secondary side 306.
  • the primary side 304 includes a plurality of primary windings 308, 310, 312 and the secondary side 306 includes a plurality of secondary windings 314, 316, 318.
  • the plurality of primary windings 308 are connected in a delta configuration, as depicted in FIG. 3.
  • the delta configuration may be achieved by connecting the primary windings 308- 312 in a series loop and providing primary phase-terminals 320, 322, 324 at an interconnection of adjacent primary windings of the primary windings 308-312. As depicted in FIG.
  • the primary phase- terminal 320 is electrically connected to an interconnection of the primary windings 308, 312
  • the primary phase-terminal 322 is electrically connected to an interconnection of the primary windings 308, 310
  • the primary phase-terminal 324 is electrically connected to an interconnection of the primary windings 310, 312.
  • the plurality of secondary windings 314, 316, 318 is connected in star configuration, as depicted in FIG. 3.
  • the star configuration may be achieved by connecting one terminal of each of the secondary windings 314, 316, 318 together at a secondary common terminal 319 and connecting other terminal of the each of the secondary windings 314, 316, 318 to secondary phase-terminals 326, 328, 330, respectively, of the transformer 302.
  • the transformer 302 is electrically connected between the line-side converter 110 and the PCC 116. More particularly, the primary side 304 having the primary windings 308 arranged in delta configuration is electrically connected to the line-side converter 110. For example, the primary phase-terminals 320, 322, 324 are respectively connected to phase-lines 332, 334, 336 of the line-side converter 110. Further, the secondary side 306 having the secondary windings 314, 316, 318 arranged in star configuration is electrically connected to the PCC 116. For example, the secondary phase-terminals 326, 328, 330 are respectively connected to phase-lines 338, 340, 342 of the PCC 116.
  • the secondary side 306 may be connected to a second ground terminal, hereinafter referred to as a ground terminal 344.
  • the secondary common terminal 319 is connected to the ground terminal 344, where the ground terminal 344 is electrically isolated from the ground terminal 140.
  • such electrical isolation between the first ground terminal 140 and the second ground terminal 344 facilitates galvanic isolation between the line-side converter 110 and the output power port 102 of the power generation systems 300.
  • the electrical isolation between the first ground terminal 140 and the second ground terminal 344 facilitates galvanic isolation between the line-side converter 110 and the electric grid.
  • the power source 112 may include an energy storage device, an auxiliary power source, or a combination thereof.
  • the power source 112 is shown to include an energy storage device 346 and an auxiliary power source 348 electrically connected to the DC-link 114.
  • the energy storage device 346 may include one or more batteries, capacitors, or a combination thereof.
  • Non-limiting examples of the auxiliary power source 348 may include a PV power source, a fuel cell, a renewable energy based power generator, a non-renewable energy based power generator, or combinations thereof.
  • the auxiliary power source 348 is described as the PV power source without limiting the scope of the present specification.
  • the PV power source 348 may include one or more PV arrays, where each PV array may include at least one PV module.
  • a PV module may include a suitable arrangement of a plurality of PV cells.
  • the PV power source 348 generates a DC voltage constituting a secondary electrical power that depends on solar insolation, weather conditions, and/or time of the day. Accordingly, the PV power source 348 is configured to supply at least a portion of the secondary electrical power to the DC-link 114.
  • the energy storage device 346 and the PV power source 348 of the power source 112 may be coupled to the DC-link 114 via respective DC-DC converters 350, 352 to control supply of the electrical power to the DC-link 114 and/or to control supply of the electrical power to the energy storage device 346 from DC-link 114.
  • the controller 120 may also be operatively connected to the DC-DC converters 350, 352.
  • the DC-DC converter 350, 352 may be operated as a buck converter, a boost converter, or a buck-boost converter, and may be controlled by the controller 120.
  • FIG. 4 is a block diagram representation of a power generation system 400, in accordance with another embodiment of the present specification.
  • the power generation system 400 of FIG. 4 is representative of one embodiment of the power generation system 300 of FIG. 3.
  • the power generation system 400 includes a prime mover 402 mechanically coupled to the DFIG 106.
  • the components of the power generation system 400 that are already described in FIG. 3 are not described again in FIG. 4.
  • the prime mover 402 may be configured to impart a rotational motion to the rotor 136 of the DFIG 106.
  • Non-limiting examples of the prime mover 402 may include an engine such as the engine 104, a wind turbine, or a hydro turbine.
  • FIG. 5 is a schematic diagram representing an electrical equivalent 500 of the DFIG 106 employed in the power generation systems 100, 300, and/or 400 of FIGS. 1, 3, and 4, in accordance with one embodiment of the present specification.
  • the electrical equivalent 500 of the DFIG 106 represents configuration of the stator winding 130 and the rotor winding 132 within the DFIG 106.
  • the DFIG 106 may include stator winding terminals 502, 504, 506 and rotor winding terminals 508, 510, 512.
  • the stator winding terminals 502, 504, 506 may be connected to the link 122 and the rotor winding terminals 508, 510, 512 may be connected to the link 124.
  • stator winding 130 and the rotor winding 132 are shown as three-phase windings.
  • the stator winding 130 may include stator phase-windings 514, 516, 518.
  • the stator phase-windings 514, 516, 518 may be arranged in a star configuration.
  • the star configuration of the stator phase-windings 514, 516, 518 may be achieved by connecting one terminal of each of the stator phase-windings 514, 516, 518 together at a first common terminal 520 and connecting other terminal of the each of the stator phase-windings 514, 516, 518 to the stator winding terminals 502, 504, 506, respectively.
  • the rotor winding 132 may include rotor phase-windings 522, 524, 526.
  • the rotor phase- windings 522, 524, 526 may be arranged in a star configuration.
  • the star configuration of the rotor phase-windings 522, 524, 526 may be achieved by connecting one terminal of each of the rotor phase- windings 522, 524, 526 together at a second common terminal 528 and connecting other terminal of the each of the rotor phase-windings 522, 524, 526 to the rotor winding terminals 508, 510, 512, respectively.
  • the first and second common terminals 520, 528 are electrically isolated from each other. In some embodiments, the first and second common terminals 520, 528 are electrically floating.
  • the term "electrically floating" as used herein refers to electrical isolation of respective terminal from any ground terminal.
  • the rotor-side converter is connected to the rotor winding 132, such configuration of the stator and rotor windings 130, 132 may facilitate galvanic isolation between the rotor-side converter 108 and the output power port 102 of the power generation systems 100, 300, and/or 400. If the power generation systems 100, 300, and/or 400 are grid-connected power generation systems, such configuration of the stator and rotor windings 130, 132 may facilitate galvanic isolation between the rotor-side converter 108 and the electric grid.
  • a power generation system such as the power generation systems 100, 300, 400, is provided.
  • the power generation system includes a DC-link such as the DC-link 114 having one conductor connected a ground terminal 140.
  • a connection of the DC-link 114 to the ground terminal 140 may eliminate or minimize the common-mode noise on the DC-link 114 and effect of PID on the power source 112, for example, the PV power source 348.
  • the useful life of the power source 112 may be enhanced.
  • use of an ungrounded power source 112, such as the PV power source 348 also results in a reduced overall cost of the power generation system.
  • the rotor-side converter 108 and the electric grid are galvanically isolated from each other.
  • the line- side converter 110 and the electric grid are also galvanically isolated from each other. Consequently, reliability of the power generation system may be improved.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Eletrric Generators (AREA)

Abstract

L'invention concerne un système de génération d'énergie (100, 300, 400). Le système de génération d'énergie (100, 300, 400) comprend un générateur d'induction à double alimentation (DFIG) (106), un point de couplage commun (PCC) (116) couplé électriquement à un enroulement de stator (130) du DFIG (106), un convertisseur côté rotor (108) connecté électriquement à un enroulement de rotor (132) du DFIG (106), et un convertisseur côté ligne (110) connecté électriquement au PCC (116). Le convertisseur côté ligne (110) est également connecté électriquement au convertisseur côté rotor (108) par l'intermédiaire d'une liaison à courant continu (CC) (114). La liaison CC (114) comprend une pluralité de conducteurs électriques (208, 210, 212), un conducteur électrique de la pluralité de conducteurs électriques (208, 210, 212) étant connecté à une première borne de terre (140). De plus, le système de génération d'énergie (100, 300, 400) comprend une source d'énergie (112) couplée électriquement à la liaison CC (114).
PCT/US2018/056850 2017-11-13 2018-10-22 Système de génération d'énergie ayant une liaison à courant continu connectée à une borne de terre WO2019094179A1 (fr)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070278797A1 (en) * 2006-05-31 2007-12-06 Flannery Patrick S Power conditioning architecture for a wind turbine
EP2128440A1 (fr) * 2006-12-28 2009-12-02 Wind To Power System, S.l. Générateur asynchrone avec régulation de la tension appliquée sur le stator
US20140070536A1 (en) * 2012-09-13 2014-03-13 General Electric Company Voltage control in a doubly-fed induction generator wind turbine system
WO2017061981A1 (fr) * 2015-10-05 2017-04-13 General Electric Company Procédé et système pour localiser des défauts à la terre dans un réseau de commandes
WO2017164977A1 (fr) * 2016-03-22 2017-09-28 General Electric Company Système de génération d'énergie doté d'un moteur à vitesse variable et procédé de lancement du moteur à vitesse variable

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070278797A1 (en) * 2006-05-31 2007-12-06 Flannery Patrick S Power conditioning architecture for a wind turbine
EP2128440A1 (fr) * 2006-12-28 2009-12-02 Wind To Power System, S.l. Générateur asynchrone avec régulation de la tension appliquée sur le stator
US20140070536A1 (en) * 2012-09-13 2014-03-13 General Electric Company Voltage control in a doubly-fed induction generator wind turbine system
WO2017061981A1 (fr) * 2015-10-05 2017-04-13 General Electric Company Procédé et système pour localiser des défauts à la terre dans un réseau de commandes
WO2017164977A1 (fr) * 2016-03-22 2017-09-28 General Electric Company Système de génération d'énergie doté d'un moteur à vitesse variable et procédé de lancement du moteur à vitesse variable

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