CN201601609U - Megawatt-level permanent magnetic direct-drive wind power generation current transformer - Google Patents
Megawatt-level permanent magnetic direct-drive wind power generation current transformer Download PDFInfo
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- CN201601609U CN201601609U CN2009202013852U CN200920201385U CN201601609U CN 201601609 U CN201601609 U CN 201601609U CN 2009202013852 U CN2009202013852 U CN 2009202013852U CN 200920201385 U CN200920201385 U CN 200920201385U CN 201601609 U CN201601609 U CN 201601609U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
The utility model discloses a megawatt-level permanent magnetic direct-drive wind power generation current transformer, which comprises a rectifying unit, an inverting unit, a control system, an auxiliary unit and a cabinet body. The rectifying unit and the inverting unit are assembled by adopting a symmetric structure, a rectifying power circuit of the rectifying unit and an inverting power circuit of the inverting unit are respectively provided with three groups of insulated gate bipolar transistors, the amount of the transistors is six, the rectifying unit is located on the side of a permanent magnetic synchro generator, the inverting unit is located on the side of a power grid, and the auxiliary unit consists of an auxiliary protecting circuit, a pre-charging circuit, an auxiliary control circuit, an inverting unit side main contact and a filter circuit. The megawatt-level permanent magnetic direct-drive wind power generation current transformer has the advantages of reasonable and compact structure, fine safety and the like.
Description
Technical field
The utility model relates to a kind of wind power generation convertor equipment, and particularly a kind of megawatt-level permanent magnet direct-drive wind-force generating converter is mainly used in and utilizes regenerative resource---the wind power generation of wind energy.
Background technology
Wind energy is as a kind of regenerative resource of cleaning, and along with wind generating technology is progressively ripe, its operating cost will be lower than water power and thermoelectricity, and development prospect is boundless.Generating set is the power conversion core of wind powered generator system, and at present, the generating set of employing mainly contains double-fed asynchronous generator group and permanent magnet direct-drive wind-force generating unit.Double-fed asynchronous generator adopts stator and rotor double winding, and slip ring, change gear box, its stator winding is directly connected on the electrical network, the rotor winding current is introduced by slip ring, ac-dc-ac transform device by a part of power is connected with electrical network, rotor converter is regulated the stator side power output by frequency, phase place and the power of regulating rotor current, makes it to be complementary with the wind wheel power output, carries out speedup by change gear box between wind wheel and motor.Because gear box easily transships, and spoilage is higher, causes the reliability and stability of double-fed asynchronous generator group relatively poor.The permanent magnet direct-drive wind-force generating unit adopts multipole permagnetic synchronous motor to be connected with impeller and drives without gear box, is incorporated into the power networks by flat-out converter plant then, is beneficial to the reliability and the system effectiveness that improve wind turbine generator.
1.5 the variable-frequency variable-voltage electric energy that the above permanent magnet direct-drive wind-force generating unit of MW class produces is undertaken sending into electrical network after the conversion by the AC-DC-AC grid-connected converter.Publication number is that the Chinese patent application " megawatt direct driving type wind and electric joint-net current transformer " of CN101051793 discloses a kind of megawatt direct driving type wind and electric joint-net current transformer, it comprises generating pusher side three-phase filtering capacitor, rectifier unit, the boost chopper unit, inverter unit, net side three-phase filtering capacitor and transformer, wind-driven generator connects the three-phase filtering capacitor, the three-phase filtering capacitor connects rectifier unit, rectifier unit connects the boost chopper unit, the boost chopper unit connects inverter unit, inverter unit connects the three-phase filtering capacitor, the three-phase filtering capacitor connects transformer, and transformer connects common frequency power network.This grid-connected converter is beneficial to the cost that reduces wind power equipment, has adjustable, the advantage such as high power level more of power factor.But have following deficiency: 1, structure is compact inadequately, and components and parts are without integration, and wind turbine generator need dispose special switchgear house, design independent cooling cabinet, the manufacturing cost that has strengthened generating set with take up room; 2, the fail safe of system is relatively poor, lack the breaker protection of platform pusher side inlet wire and the outlet of net side, and monitoring facilities is limited, when appearance is unusual, can impact electrical network, breaks down; 3, the communications protocol/interface of Zhi Chiing is limited, and the communication security of current transformer ensures not enough; 4, repair demolition difficulty.
Summary of the invention
Technical problem to be solved in the utility model is, overcomes the defective that prior art exists, and a kind of compactness rational in infrastructure, megawatt-level permanent magnet direct-drive wind-force generating converter that fail safe is good are provided.
The technical scheme in the invention for solving the above technical problem is: this megawatt-level permanent magnet direct-drive wind-force generating converter, and its design feature is: comprise rectification unit, inversion unit, control system, auxiliary unit and cabinet;
Described rectification unit comprises rectified power circuit and rectification Drive and Control Circuit, inversion unit comprises inverter power circuit and inversion Drive and Control Circuit, described rectified power circuit is connected by dc bus with the inverter power circuit, be connected by optical-fibre communications between rectification Drive and Control Circuit and the inversion Drive and Control Circuit, between described control system and the rectification Drive and Control Circuit, all be connected between control system and the inversion Drive and Control Circuit by communication bus, described rectification unit and inversion unit adopt the symmetrical structure configuration, rectified power circuit and inverter power circuit are formed by three groups of six insulated gate bipolar transistors, rectification unit is positioned at the magneto alternator side, and inversion unit is positioned at grid side; Rectification unit will carry out the pulse width modulation rectification from the three-phase alternating current of 5～200Hz of magneto alternator, finish ac/dc voltage stabilizing and boosting inverter, form 1000～1200V direct voltage, inversion unit is reverse into the 50Hz three-phase alternating current with direct voltage through pulse width modulation;
Described auxiliary unit comprises auxiliary protection circuit, pre-charge circuit, auxiliary control circuit, inversion unit side main contactor and filter circuit, described auxiliary protection circuit contains rectification unit side breaker protector, inversion unit side breaker protector and Surge Protector, pre-charge circuit contains dc bus pre-charge circuit contactor, dc bus pre-charge resistance and dc bus precharge rectifier bridge, and filter circuit contains dc bus filter capacitor, sinusoidal filter electric capacity and sinusoidal filter reactance;
Rectification unit side breaker protector and Surge Protector are housed between described magneto alternator and the rectification unit; Surge Protector, filter circuit, inversion unit side main contactor, dc bus pre-charge circuit contactor and inversion unit side breaker protector are housed successively, described auxiliary control circuit control rectification unit side breaker protector, inversion unit side breaker protector, pre-charge circuit and inversion unit side main contactor between inversion unit and the electrical network.
The utility model megawatt-level permanent magnet direct-drive wind-force generating converter, described communication bus is a kind of in Ethernet, DeviceNet, ProfileBus, Canbus, the ModBus bus, and configuration is to the hardwire of network communication redundancy between described control system and the rectification Drive and Control Circuit, between control system and the inversion Drive and Control Circuit.
The utility model megawatt-level permanent magnet direct-drive wind-force generating converter, described rectification unit side and inversion unit side all are provided with the synchrotrans of detectable voltage signals.
The utility model megawatt-level permanent magnet direct-drive wind-force generating converter, described rectification unit, inversion unit, control system, auxiliary unit is integrated is installed in the cabinet, each of inverter power circuit that wherein is positioned at the rectified power circuit of rectification unit of cabinet and inversion unit all is independent installation mutually, and at each equipped respectively pulley in bottom mutually of rectified power circuit and inverter power circuit, described cabinet is installed in the cabin of the tower tube bottom of magneto alternator or cat head.
The utility model megawatt-level permanent magnet direct-drive wind-force generating converter, described rectification unit and inversion unit all dispose water cooling plant and/or air cooling equipment.
The utility model compared with prior art has the following advantages: 1, the utility model megawatt-level permanent magnet direct-drive wind-force generating converter is rational in infrastructure, the symmetrical structure configuration of rectification unit and inversion unit, can the backwards rotation gen-set, under the situation of mains supply, generator is carried out electronic startup as motor, realize that the gen-set belt speed starts or operation, to debugging and bringing great convenience property of operation; The rectification unit side breaker protector and the inversion unit side breaker protector that are provided with, when occurring when unusual, rectification unit side breaker protector, inversion unit side breaker protector can automatic shutoff circuits, reach the protection of current transformer and reduce impact to electrical network; Whole current transformer has all designed Surge Protector in inlet wire side and net side, carries out surge protection, improves the fail safe of system; Design the filter circuit that independently inlet wire reactance and electric capacity constitute, remove some harmonic waves effectively, and burning voltage to a certain extent, inlet wire and outlet power quality improved.2, the communication interface of current transformer is various, comprises ProfileBus bus, Can bus, ModBus bus, interfaces such as Ethernet, DeviceNet, can satisfy the butt joint with different control appliances; The hardwire communication makes the communication of current transformer become more safe and reliable to the redundancy of communication interface.3, integral mechanical structure compactness, complete cabinet is integrated to be installed in the cabin of tower tube bottom or cat head, and need not is the special switchgear house of typhoon power generator group design specially; The rectified power circuit of rectification unit and the inverter power circuit of inversion unit are all independently installed, and in the equipped pulley in the bottom of power circuit, convenient for maintaining dismounting; Rectification unit and inversion unit all dispose water cooling plant and/or air cooling equipment, adapt to the application of China different regions and varying environment, have saved space and cost simultaneously again.
Description of drawings
Fig. 1 is the utility model embodiment megawatt-level permanent magnet direct-drive wind-force generating converter electrical block diagram.
Fig. 2 is the utility model embodiment megawatt-level permanent magnet direct-drive wind-force generating converter circuit theory diagrams.
Embodiment
Below by embodiment the utility model is further described.
Embodiment:
It is full power convertor that direct drive type wind generating adopts current transformer, and a current transformer unidirectional delivery power to electrical network GRID, is active insulated gate bipolar transistor IGBT rectification+insulated gate bipolar transistor IGBT inversion from generator PMSG.Referring to Fig. 1, this megawatt-level permanent magnet direct-drive wind-force generating converter comprises rectification unit GENSC, inversion unit AFE, control system WTC, auxiliary unit and cabinet.
Rectification unit GENSC comprises rectified power circuit I GBT-Z and rectification Drive and Control Circuit GENSCWDCS; Inversion unit AFE comprises inverter power circuit I GBT-N and inversion Drive and Control Circuit AFE WDCS.Rectification unit GENSC and inversion unit AFE adopt the symmetrical structure configuration, and rectification unit GENSC and inversion unit AFE place back-to-back; Rectification unit GENSC is placed on generator PMSG side, its rectified power circuit I GBT-Z by three groups totally six insulated gate bipolar transistor IGBTs form; Inversion unit AFE is placed on electrical network GRID side, with the same its inverter power circuit I of rectified power circuit I GBT-Z GBT-N also by three groups totally six insulated gate bipolar transistor IGBTs form.The symmetrical structure of rectification unit GENSC and inversion unit AFE under the situation of mains supply, carries out electronic startup with generator as motor, realizes that the gen-set belt speed starts or operation.Rectified power circuit I GBT-Z is connected by dc bus with inverter power circuit I GBT-N; Be connected by optical-fibre communications GQTX between rectification Drive and Control Circuit GENSC WDCS and the inversion Drive and Control Circuit AFE WDCS; Between control system WTC and the rectification Drive and Control Circuit GENSC WDCS, all be connected between control system WTC and the inversion Drive and Control Circuit AFE WDCS by communication bus TXZX.The communication bus TXZX that embodiment adopts is a kind of in Ethernet, DeviceNet, ProfileBus, Canbus, the ModBus bus, communication interface corresponding to communication bus Ethernet, DeviceNet, ProfileBus, Canbus, ModBus all is set on rectification Drive and Control Circuit GENSC WDCS and the inversion Drive and Control Circuit AFEWDCS, and the communication bus that is used for being connected with control system WTC is selected.Configuration is to the hardwire YJX of network communication redundancy between control system WTC and the rectification Drive and Control Circuit GENSC WDCS, between control system WTC and the inversion Drive and Control Circuit AFEWDCS.Lost efficacy in emergency circumstances at communication bus TXZX,, guaranteed that the communication security of current transformer was reliable, realized stoppage protection control current transformer by the communication of hardwire YJX Redundant Control.
Auxiliary unit comprises auxiliary protection circuit, pre-charge circuit, auxiliary control circuit, inversion unit side main contactor TLRM, filter circuit and synchrotrans.Auxiliary protection circuit contains rectification unit side breaker protector GENSC_I, inversion unit side breaker protector AFE_I and Surge Protector LEMP_D; For the instantaneous overvoltage of scurrying into major loop being limited in the voltage range that system can bear, in generator PMSG side and electrical network GRID side many group Surge Protector LEMP_D are set respectively.Pre-charge circuit contains dc bus precharge loop contactor PRE_TLR, dc bus pre-charge resistance PRE_R and dc bus precharge rectifier bridge PRE_RB.Filter circuit contains dc bus filter capacitor DC_C, sinusoidal filter electric capacity SFLT_C and sinusoidal filter reactance SFLT_L.Embodiment rectification unit side breaker protector GENSC_I and inversion unit side breaker protector AFE_I; all select E series or the F Series Circuit Breakers of ABB, realize the protection of short circuit long delay, the protection of short circuit short time delay, overvoltage protection, overcurrent protection and ground protection by the protection annex of selecting circuit breaker simultaneously.Rectification unit side breaker protector GENSC_I and Surge Protector LEMP_D are housed between magneto alternator PMSG and the rectification unit GENSC; Surge Protector LEMP_D, filter circuit, inversion unit side main contactor TLRM, dc bus pre-charge circuit contactor PRE_TLR and inversion unit side breaker protector AFE_I are housed between inversion unit AFE and the electrical network GRID successively.Auxiliary control circuit contains the control to control, pre-charge circuit and the inversion unit side main contactor TLRM of control, rectification unit side breaker protector GENSC_I and the inversion unit side breaker protector AFE_I of power supply power supply, air cooling equipment FL or water cooling plant SL.Rectification unit GENSC side is provided with the synchrotrans GENSC_ST of the voltage signal that detects magneto alternator PMSG side, and inversion unit AFE side is provided with the synchrotrans AFE_ST of detection from voltage, frequency and the phase signal of electrical network GRID side.
The embodiment cabinet is installed in the cabin of the tower tube bottom of magneto alternator PMSG or cat head, integrated installation rectification unit GENSC, inversion unit AFE, control system WTC, auxiliary unit in cabinet, each of inverter power circuit I GBT-N that wherein is positioned at the rectified power circuit I GBT-Z of rectification unit GENSC of cabinet and inversion unit AFE all is independent installation mutually, and in each equipped respectively pulley in bottom mutually of rectified power circuit I GBT-Z and inverter power circuit I GBT-N, convenient for maintaining mounting or dismounting.Rectified power circuit I GBT-Z and inverter power circuit I GBT-N all dispose water cooling plant SL and/or air cooling equipment FL, can actual select according to service condition.
Among Fig. 1, M is a motor, and L1, L2, L3 are the three-phase to electrical network GRID, and A, B, C are the three-phase to generator PMSG.
During the present embodiment operation, magneto alternator PMSG is the controlling object of rectification unit GENSC, in the wind power generation process wind energy is converted to electric energy; Electrical network GRID is to inversion unit AFE, control system WTC and auxiliary control circuit power supply, and receiving current transformer simultaneously will be from the energy identical with phase place with electrical network GRID frequency of magneto alternator PMSG; The rectification unit GENSC that is positioned at the magneto alternator side will carry out the pulse width modulation (PWM) rectification from the three-phase alternating current of 5～200Hz of magneto alternator, finish ac/dc AC/DC voltage stabilizing and boosting inverter, form 1000～1200VDC direct voltage, the inversion unit AFE that is positioned at grid side is reverse into the 50Hz three-phase alternating current with direct voltage through pulse width modulation (PWM), is sent to electrical network GRID by circuit breaker.Rectified power circuit I GBT-Z and inverter power circuit I GBT-N, groundwork device as rectification unit GENSC and inversion unit AFE, reception is finished the power conversion of affiliated unit, i.e. AC/DC, DC/AC conversion work from the pulse-width signal PWM of affiliated unit; Rectification Drive and Control Circuit GENSC WDCS is as the control system of rectification unit GENSC, insulated gate bipolar transistor IGBT work and the input of the rectified power circuit I GBT-Z of control rectification unit GENSC, control and control system WTC communication, the communication of the inversion Drive and Control Circuit AFE WDCS of control and inversion unit AFE; Inversion Drive and Control Circuit AFE WDCS is as the control system of inversion unit AFE, insulated gate bipolar transistor IGBT work and the input of the inverter power circuit I GBT-N of control inversion unit AFE, control and control system WTC communication, the communication of the rectification Drive and Control Circuit GENSC WDCS of control and rectification unit GENSC.The rectification Drive and Control Circuit GENSC WDCS of rectification unit GENSC realizes the selection of current transformer control strategy by the working condition of optical fiber detection inversion unit AFE inversion Drive and Control Circuit AFE WDCS; Optical-fibre communications between inversion unit AFE and the rectification unit GENSC is finished control and communication to current transformer with control system WTC, rectification Drive and Control Circuit GENSC WDCS, inversion Drive and Control Circuit AFE WDCS, communication bus Profibus or Canbus or Modbus or Ethernet or DeviceNet.
The job order of control system WTC control rectification unit side breaker protector GENSC_I, inversion unit side breaker protector AFE_I, inversion unit side main contactor TLRM, dc bus precharge loop contactor PRE_TLR; the work of control water cooling plant SL and/or air cooling equipment FL; the communication of control current transformer and blower fan master control system, the work of the inversion driving control system AFE WDCS of control current transformer inversion unit AFE and the rectification Drive and Control Circuit GENSC WDCS of rectification unit GENSC.
Rectification unit side synchrotrans GENSC_ST, detect the voltage signal of magneto alternator PMSG side, by rotating speed or the torque of control magneto alternator PMSG, realize the vector control that feedback and nothing feedback arranged of rectification unit GENSC to magneto alternator PMSG; Inversion unit side synchrotrans AFE_ST detects voltage, frequency and phase signal from electrical network GRID side, is with electrical network GRID same-phase, same frequency with the voltage of amplitude with the voltage inversion on the dc bus.
Dc bus pre-charge circuit contactor PRE_TLR, closed in the charging process of the dc bus of current transformer, after inversion unit AFE side main contactor TLRM closure, disconnect, form pre-charge circuit with dc bus pre-charge resistance PRE_R and dc bus precharge rectifier bridge PRE_RB, dc bus precharge rectifier bridge PRE_RB, in the charging process of the dc bus of current transformer, work, give the direct voltage of the little electric current of dc bus preliminary filling, the impact of avoiding direct closed inversion unit AFE side main contactor TLRM to cause to major loop; Inversion unit side main contactor TLRM controls the closed and disconnected of inversion unit major loop with inversion unit side breaker protector AFE_I, and closed in the process of current transformer work, the process that stops at current transformer breaks.
Rectification unit side breaker protector GENSC_I break-make is connected with magneto alternator PMSG loop, realize the protection of short circuit long delay, the protection of short circuit short time delay, overvoltage protection, overcurrent protection, ground protection simultaneously, current transformer and magneto alternator PMSG are protected; Inversion unit side breaker protector AFE_I break-make is connected with electrical network GRID loop, realizes the protection of short circuit long delay, the protection of short circuit short time delay, overvoltage protection, overcurrent protection, ground protection simultaneously, and electrical network GRID and current transformer are protected; Be installed in the Surge Protector LEMP_D of the junction of magneto alternator PMSG and rectification unit side breaker protector GENSC_I; inhibition is from magneto alternator PMSG side surge current, and the Surge Protector LEMP_D that is installed in the junction of electrical network GRID and inversion unit side breaker protector AFE_I suppresses from electrical network GRID side surge current.
The sinusoidal filter reactance SFLT_L of filter circuit and sinusoidal filter electric capacity SFLT_C form sinusoidal filter, and the harmonic wave that current transformer equipment is produced is suppressed in 3% the scope; Dc bus filter capacitor DC_C carries out voltage stabilizing and filtering to DC bus-bar voltage.
The embodiment megawatt-level permanent magnet direct-drive wind-force generating converter is taked following risk prevention measure:
The failed operation protection of a, current transformer, the overvoltage protection of direct current adopt the hardware and software protection of current transformer self;
Hardware setting and the software control of inversion unit AFE and rectification unit GENSC are adopted in the overvoltage of b, current transformer and overcurrent protection, realize in conjunction with rectification unit side open circuit protection GENSC_I and inversion unit side breaker protector AFE_I;
The overcurrent protection of c, generator PMSG realizes maximum current control by the current limit device that the torque that starts rectification unit GENSC is controlled, and realizes the protection that superposes by the overcurrent protection annex of rectification unit side breaker protector GENSC_I simultaneously;
The overvoltage protection of d, generator PMSG is realized by the automatic weak-magnetic of rectification unit GENSC, overvoltage protection annex and the over-pressure safety device OVERVDTAGE PROT of rectification unit side breaker protector GENSC_I.
Referring to Fig. 2, below the operation control flow of embodiment megawatt-level permanent magnet direct-drive wind-force generating converter:
1, when wind power system electrical network GRID is in standby condition, the boot sequence of control system WTC control is, after rectification unit GENSC is ready to complete, inversion unit AFE finishes precharge by dc bus pre-charge circuit contactor PRE_TLR, dc bus pre-charge resistance PRE_R and the dc bus precharge rectifier bridge PRE_RB of pre-charge circuit, after direct voltage reaches set point, signal is finished in inversion unit AFE output precharge, inversion unit side main contactor TLRM closure, dc bus pre-charge circuit contactor PRE_TLR disconnects;
2, control system WTC starts inversion unit AFE, makes voltage, the Frequency Synchronization of output voltage, frequency and electrical network GRID, makes the DC bus-bar voltage between inversion unit AFE and the rectification unit GENSC be in set point simultaneously;
3, if the synchronizing process of inversion unit AFE and electrical network GRID is finished, all within setting range, then inversion unit AFE output AFE_OK signal is given rectification unit GENSC for voltage and frequency, but rectification unit GENSC enters starting state;
4, if rectification unit GENSC does not receive the AFE_OK signal in running, rectification unit GENSC will be in idle condition; After rectification unit GENSC receives the AFE_OK signal that inversion unit AFE sends, rectification unit side breaker protector GENSC_I closure between control system WTC control rectification unit GENSC and the magneto alternator PMSG, rectification unit GENSC enters holding state, after reaching blower fan incision wind speed, rectification unit GENSC enters starting state, and magneto alternator PMSG generates electricity;
5, when generating electricity by way of merging two or more grid systems, the built-in PI ring of inversion unit AFE is regulated the synchronizing current that outputs to electrical network GRID, controls to the voltage of electrical network GRID simultaneously;
6, when disconnecting, inversion unit side breaker protector AFE_I causes the phase bit loss, be incorporated into the power networks and break down, inversion unit AFE stops to regulate and switching to standby mode automatically, and cancellation AFE_OK signal makes rectification unit GENSC control DC bus-bar voltage maintain set point; Behind electrical network GRID off-grid, control system WTC carries out safeguard protection, enters shut down procedure, prevents to cause the damage of magneto alternator PMSG and other electric equipment;
7, if dropping to, direct voltage sets the set point that lowest amplitude or electrical network GRID power-off time surpass control system WTC, the rectified power circuit I GBT-Z of the inverter power circuit I GBT-N of inversion unit AFE and the rectification unit GENSC concurrent report of being out of order that all quits work, simultaneously rectification unit side breaker protector GENSC_I is disconnected protection current transformer and electrical network GRID;
8, be arranged on the Surge Protector LEMP_D of rectification unit GENSC and inversion unit AFE, the instantaneous overload of major loop is protected in the scope that system can bear; If safety value is got in interchange and/or direct current voltage rise; rectification unit GENSC and the inversion unit AFE concurrent report of being out of order that quits work; rectification unit side breaker protector GENSC_I carries out overvoltage protection simultaneously; disconnect rectification unit side breaker protector GENSC_I, control system WTC will stop to contain the blower fan work of magneto alternator PMSG.
In the embodiment control flow, adopt hardware setting and the software control of inversion unit AFE and rectification unit GENSC, realize the overvoltage and the overcurrent protection of current transformer in conjunction with rectification unit side breaker protector GENSC_I and inversion unit side breaker protector AFE_I; Take to decontrol fully the current limit device of the torque control of rectification unit GENSC and realize maximum current output, realize the overcurrent protection of stack generator PMSG simultaneously by the overcurrent protection annex of rectification unit side breaker protector GENSC_I; The overvoltage protection of the magneto alternator PMSG that control system WTC carries out, automatic weak-magnetic by rectification unit GENSC, and the overvoltage protection annex of rectification unit side breaker protector GENSC_I and over-pressure safety device OVERVDTAGE PROT, avoid the overvoltage of magneto alternator PMSG to cause rectification unit GENSC to damage; Control system WTC detects the voltage signal of magneto alternator PMSG side by rectification unit side synchrotrans GENSC_ST, change rotating speed or the torque of magneto alternator PMSG, realize the vector control that feedback and nothing feedback arranged of rectification unit GENSC magneto alternator PMSG; Detecting voltage, frequency and phase signal from electrical network GRID side by inversion unit side synchrotrans AFE_ST, is with electrical network GRID same-phase, same frequency with the voltage of amplitude with the voltage inversion on the dc bus.
Among Fig. 2; MAINS is the control major loop; AUX.P.SUPPLY is the assist control power supply; SWITCH is a protective circuit breaker; SYNCHRO TRANSF is synchrotrans; OPTIONAL COMMUNICATION is a kind of among communication bus Profibus or Canbus or Modbus or Ethernet or the DeviceNet; PRECHARGE OK SIGNAL is that signal is finished in precharge; AFE READY SIGNAL is ready to signal for inversion unit AFE; GENSC READY SIGNAL is ready to signal for rectification unit GENSC; OVERVDTAGEPROT is an over-pressure safety device; AFE RUNNING SIGNAL is an inversion unit AFE run signal; DC BUSCONNECTION is that inversion unit AFE is connected with the dc bus of rectification unit GENSC; TO ELECTRICGRID is the control to electrical network, and TO WIND TURBING is for arriving the control of blower fan except that current transformer.
The utility model megawatt-level permanent magnet direct-drive wind-force generating converter has passed through the test that electric electrical machinery plant is breathed out in Henan Xixia Mine electrical machinery plant and Harbin, and look into dry-air blast field, Ulan, Inner Mongol Cha Bushi wind field and Changyi, Weifang City, Shandong Province wind field actual motion at Daqing, Heilongjiang Province Bayan, whole system operates steadily, and is safe and reliable.
Above embodiment has done comparatively detailed description to the utility model megawatt-level permanent magnet direct-drive wind-force generating converter; but these descriptions are not in order to limit protection range of the present utility model; any technical staff who is familiar with this technology; change and the retouching done in not breaking away from design of the present utility model and scope all should belong to protection range of the present utility model.
Claims (5)
1. a megawatt-level permanent magnet direct-drive wind-force generating converter is characterized in that: comprise rectification unit, inversion unit, control system, auxiliary unit and cabinet;
Described rectification unit comprises rectified power circuit and rectification Drive and Control Circuit, inversion unit comprises inverter power circuit and inversion Drive and Control Circuit, described rectified power circuit is connected by dc bus with the inverter power circuit, be connected by optical-fibre communications between rectification Drive and Control Circuit and the inversion Drive and Control Circuit, between described control system and the rectification Drive and Control Circuit, all be connected between control system and the inversion Drive and Control Circuit by communication bus, described rectification unit and inversion unit adopt the symmetrical structure configuration, rectified power circuit and inverter power circuit are formed by three groups of six insulated gate bipolar transistors, rectification unit is positioned at the magneto alternator side, and inversion unit is positioned at grid side;
Described auxiliary unit comprises auxiliary protection circuit, pre-charge circuit, auxiliary control circuit, inversion unit side main contactor and filter circuit, described auxiliary protection circuit contains rectification unit side breaker protector, inversion unit side breaker protector and Surge Protector, pre-charge circuit contains dc bus pre-charge circuit contactor, dc bus pre-charge resistance and dc bus precharge rectifier bridge, and filter circuit contains dc bus filter capacitor, sinusoidal filter electric capacity and sinusoidal filter reactance;
Rectification unit side breaker protector and Surge Protector are housed between described magneto alternator and the rectification unit; Surge Protector, filter circuit, inversion unit side main contactor, dc bus pre-charge circuit contactor and inversion unit side breaker protector are housed successively, described auxiliary control circuit control rectification unit side breaker protector, inversion unit side breaker protector, pre-charge circuit and inversion unit side main contactor between inversion unit and the electrical network.
2. megawatt-level permanent magnet direct-drive wind-force generating converter according to claim 1, it is characterized in that: described communication bus is a kind of in Ethernet, DeviceNet, ProfileBus, Canbus, the ModBus bus, and configuration is to the hardwire of network communication redundancy between described control system and the rectification Drive and Control Circuit, between control system and the inversion Drive and Control Circuit.
3. megawatt-level permanent magnet direct-drive wind-force generating converter according to claim 2 is characterized in that: described rectification unit side and inversion unit side all are provided with the synchrotrans of detectable voltage signals.
4. megawatt-level permanent magnet direct-drive wind-force generating converter according to claim 3, it is characterized in that: described rectification unit, inversion unit, control system, auxiliary unit is integrated is installed in the cabinet, each of inverter power circuit that wherein is positioned at the rectified power circuit of rectification unit of cabinet and inversion unit all is independent installation mutually, and at each equipped respectively pulley in bottom mutually of rectified power circuit and inverter power circuit, described cabinet is installed in the cabin of the tower tube bottom of magneto alternator or cat head.
5. megawatt-level permanent magnet direct-drive wind-force generating converter according to claim 4 is characterized in that: described rectification unit and inversion unit all dispose water cooling plant and/or air cooling equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202013852U CN201601609U (en) | 2009-12-03 | 2009-12-03 | Megawatt-level permanent magnetic direct-drive wind power generation current transformer |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910154748A CN101710789B (en) | 2009-12-03 | 2009-12-03 | Megawatt-level permanent magnet direct-drive wind-force generating converter and control method |
| CN2009202013852U CN201601609U (en) | 2009-12-03 | 2009-12-03 | Megawatt-level permanent magnetic direct-drive wind power generation current transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201601609U true CN201601609U (en) | 2010-10-06 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910154748A Active CN101710789B (en) | 2009-12-03 | 2009-12-03 | Megawatt-level permanent magnet direct-drive wind-force generating converter and control method |
| CN2009202013852U Expired - Fee Related CN201601609U (en) | 2009-12-03 | 2009-12-03 | Megawatt-level permanent magnetic direct-drive wind power generation current transformer |
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| Application Number | Title | Priority Date | Filing Date |
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| CN200910154748A Active CN101710789B (en) | 2009-12-03 | 2009-12-03 | Megawatt-level permanent magnet direct-drive wind-force generating converter and control method |
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| CN107733242A (en) * | 2017-11-02 | 2018-02-23 | 天津电气科学研究院有限公司 | A kind of cold MW class four-quadrant low-voltage frequency conversion device of liquid |
| CN111614123A (en) * | 2020-06-15 | 2020-09-01 | 三一重能有限公司 | Power device of wind power converter, wind power converter and wind power generation system |
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| CN101950977A (en) * | 2010-09-01 | 2011-01-19 | 北京清能华福风电技术有限公司 | Method for realizing low-wind speed startup of permanent magnet wind turbine generator |
| EP2732523B1 (en) | 2011-07-14 | 2015-10-14 | Vestas Wind Systems A/S | Power generation system and method for operating a power generation system |
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2009
- 2009-12-03 CN CN200910154748A patent/CN101710789B/en active Active
- 2009-12-03 CN CN2009202013852U patent/CN201601609U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733242A (en) * | 2017-11-02 | 2018-02-23 | 天津电气科学研究院有限公司 | A kind of cold MW class four-quadrant low-voltage frequency conversion device of liquid |
| CN111614123A (en) * | 2020-06-15 | 2020-09-01 | 三一重能有限公司 | Power device of wind power converter, wind power converter and wind power generation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101710789B (en) | 2012-10-10 |
| CN101710789A (en) | 2010-05-19 |
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