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CN202268704U - Doubly-fed induction wind power generator controller without grid side converter - Google Patents

Doubly-fed induction wind power generator controller without grid side converter Download PDF

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Publication number
CN202268704U
CN202268704U CN2011203551629U CN201120355162U CN202268704U CN 202268704 U CN202268704 U CN 202268704U CN 2011203551629 U CN2011203551629 U CN 2011203551629U CN 201120355162 U CN201120355162 U CN 201120355162U CN 202268704 U CN202268704 U CN 202268704U
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fed induction
doubly
grid
rotor
processing unit
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CN2011203551629U
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张淼
刘金山
章云
程良伦
陈思哲
唐雄民
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Guangdong University of Technology
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Guangdong University of Technology
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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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/70—Wind energy
    • Y02E10/76—Power conversion electric or electronic aspects
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E70/00—Other energy conversion or management systems reducing GHG emissions
    • Y02E70/30—Systems combining energy storage with energy generation of non-fossil origin
    • 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
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S10/00—Systems supporting electrical power generation, transmission or distribution
    • Y04S10/14—Energy storage units

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Abstract

本实用新型是一种无网侧变流器的双馈感应风力发电机控制器。包括储能装置、充放电控制装置、直流母线电容、转子侧PWM变流器、AD转换模块、中央处理单元，中央处理单元的信号输入端通过AD转换模块与储能装置连接，中央处理单元的信号输出端分别与转子侧PWM变流器的信号输入端连接及与充放电控制装置的信号输入端连接，充放电控制装置的信号输入端与储能装置相连，转子侧PWM变流器与充放电控制装置之间连接有直流母线电容，转子侧PWM变流器与双馈感应发电机的转子绕组相连。本实用新型结构简单，提高了系统的稳定性，又降低了成本。且本实用新型增加了直流侧储能装置，并网运行启动时不需要外电网励磁，启动速度快，效率高。

Figure 201120355162

The utility model relates to a double-fed induction wind power generator controller without a grid-side converter. Including energy storage device, charge and discharge control device, DC bus capacitor, rotor side PWM converter, AD conversion module, central processing unit, the signal input end of the central processing unit is connected to the energy storage device through the AD conversion module, the central processing unit The signal output terminal is connected to the signal input terminal of the rotor side PWM converter and the signal input terminal of the charging and discharging control device respectively, the signal input terminal of the charging and discharging control device is connected to the energy storage device, and the rotor side PWM converter is connected to the charging and discharging control device. The DC bus capacitor is connected between the discharge control devices, and the rotor-side PWM converter is connected with the rotor winding of the doubly-fed induction generator. The utility model has simple structure, improves the stability of the system, and reduces the cost. Moreover, the utility model adds a DC-side energy storage device, and does not require external grid excitation when grid-connected operation is started, and the start-up speed is fast and the efficiency is high.

Figure 201120355162

Description

The double-fed induction wind driven generator controller that does not have the net side converter
Technical field
The utility model is a kind of double-fed induction wind driven generator controller that does not have the net side converter, belongs to the renovation technique of the double-fed induction wind driven generator controller that does not have the net side converter.
Background technology
The double-fed induction wind driven generator current-variable controller all adopts the PWM current transformer of AC-DC-AC to carry out excitation control at present, and current-variable controller adopts two groups of inverter parallel-connection structures back-to-back.There is following shortcoming in such current transformer: 1) topological structure is complicated, and power switch pipe quantity is many, and cost is higher; 2) lack energy storage device, start the preceding external world and need carry out precharge dc capacitor, the start-up course that is incorporated into the power networks complicacy, speed is slower; 3) under the situation of no external power source islet operation, adopt the double fed induction generators of indirect AC convertor not obtain excitation from electrical network, can't realize self-starting, flexibility deficiency when islet operation or independent load running, start-up course is complicated.
Summary of the invention
The purpose of the utility model be to consider the problems referred to above and provide a kind of high reliability, simple in structure, cheaply do not have the net side converter the double-fed induction wind driven generator controller.The utility model is not only saved the space, cost is low, safe in utilization, easy to operate, long service life.
The technical scheme of the utility model is: the double-fed induction wind driven generator controller of the no net side converter of the utility model; Include energy storage device, charge-discharge controller, dc-link capacitance, rotor-side PWM current transformer, AD modular converter, CPU; Wherein the signal input part of CPU is connected with energy storage device through the AD modular converter; The signal output part of CPU is connected with the signal input part of rotor-side PWM current transformer respectively and is connected with the signal input part of charge-discharge controller; The signal input part of charge-discharge controller links to each other with energy storage device; Be connected with dc-link capacitance between rotor-side PWM current transformer and the charge-discharge controller, rotor-side PWM current transformer links to each other with the rotor winding of double fed induction generators.
Above-mentioned CPU also is connected with the monitoring touch-screen.
Above-mentioned CPU is programmable processor or single-chip microcomputer or DSP.
Above-mentioned CPU adopts 485 communications to be connected with the monitoring touch-screen and realizes man-machine interaction.
Above-mentioned CPU realizes remote monitoring through fieldbus.
The double-fed induction wind driven generator controller of the utility model has increased the structure of DC side energy storage device owing to adopt the net side converter of having cancelled former control system, has simplified the structure of system, improves the stability of system.Especially at isolated island during away from main operation of power networks (or independent load) state, controller is incorporated into the power networks does not need the external power grid excitation, and toggle speed is fast, has improved whole efficient.In addition, when system works under distributed multi-energy system state, can improve the robustness of system.Side (load-side) current transformer need not netted by system, has reduced cost.In addition; Contain energy storage device and charge-discharge controller in the utility model dc bus; Startup need not outer bound pair dc-link capacitance and carries out precharge, simplified start-up course, and the utility model can detect the energy storage device state-of-charge in real time; The control double-fed generator works in supersynchronous rotating speed when state-of-charge is low, and energy storage device is charged; The control double-fed generator works in the metasynchronism rotating speed when state-of-charge is too high, makes the energy storage device discharge; When state-of-charge just often, press maximal wind-energy capture principle or loading demand control double-fed generator rotating speed; In addition, can realize self-starting during the load of the utility model band independence, not need extraneous the intervention, start-up course is simple; The operational factor of the utility model programmable processor real-time monitoring system realizes artificial on duty and unattended operation stable operation.The utility model is that a kind of design is ingenious, function admirable, the double-fed induction wind driven generator controller of convenient and practical no net side converter.
Description of drawings
Fig. 1 is the schematic diagram of the utility model.
Embodiment
Embodiment:
The schematic diagram of the utility model is as shown in Figure 1; The double-fed induction wind driven generator controller of the no net side converter of the utility model; Include energy storage device 1, charge-discharge controller 2, dc-link capacitance 3, rotor-side PWM current transformer 4, AD modular converter 5, CPU 7; Wherein the signal input part of CPU 7 is connected with energy storage device 1 through AD modular converter 5; The signal output part of CPU 7 is connected with the signal input part of rotor-side PWM current transformer 4 respectively and is connected with the signal input part of charge-discharge controller 2; The signal input part of charge-discharge controller 2 links to each other with energy storage device 1, is connected with dc-link capacitance 3 between rotor-side PWM current transformer 4 and the charge-discharge controller 2, and rotor-side PWM current transformer 4 links to each other with the rotor winding of double fed induction generators 8.
Above-mentioned CPU 7 also is connected with monitoring touch-screen 6.
Above-mentioned CPU 7 has the processor of powerful disposal ability for programmable processor or single-chip microcomputer or DSP etc.
Above-mentioned CPU 7 adopts 485 communications to be connected with monitoring touch-screen 6 and realizes man-machine interaction.
Above-mentioned CPU 7 realizes remote monitoring through fieldbus.In the present embodiment, the stator winding of above-mentioned doubly fed induction generator 8 links to each other with three phase network or independent load.
The rotor main shaft of above-mentioned doubly fed induction generator 8 links to each other with the driving link of raising speed gear box 9.The driven member of above-mentioned raising speed gear box 9 links to each other with wind energy conversion system 10.
The operation principle of the utility model is following: during beginning, CPU 7 starts initialize routine and carries out initialization, and system is in the preparation state; After the work, the CPU 7 in the utility model is judged energy storage device 1 current state-of-charge through the voltage of AD modular converter 5 detection energy storage devices 1; When energy storage device 1 energy storage is low; The double-fed induction wind driven generator controller control double fed induction generators that does not have the net side converter runs on supersynchronous rotating speed, and the rotor winding of double fed induction generators charges to energy storage device 1 through dc-link capacitance 3, charge-discharge controller 2; When net side electric energy is not enough; The double-fed induction wind driven generator controller control double fed induction generators 8 that does not have the net side converter runs on the metasynchronism rotating speed; Energy storage device 1 is imported the rotor winding of double fed induction generators 8 through charge-discharge controller 2, dc-link capacitance 3 with energy, through stator to the electrical network or the load of double fed induction generators 8; When energy storage device 1 state-of-charge in normal range of operation; If double fed induction generators 8 is incorporated into the power networks; Then control wind energy conversion system 10 and work in the maximal wind-energy capture state, if double fed induction generators 8 is with independent load, then according to the power output of load regulation double fed induction generators 8.
CPU 7 in the utility model adopts two kinds of Different control algorithm switching controls, and the switching foundation of control algolithm is the state-of-charge of energy storage device 1 and the running status of electrical network load.When the electric weight of energy storage device 1 was not enough, its signal was input to CPU 7 through the AD data transaction, and CPU 7 is according to detected signal adjustment control algolithm, and output PWM drive signal control double fed induction generators charges to energy storage device; When electrical network or load electric weight deficiency, CPU 7 adjustment control algolithms make double fed induction generators give electrical network or load transmission of electric energy.
Double-fed induction wind driven generator controller employing 485 communications of nothing net side converter are connected the realization man-machine interaction with the monitoring touch-screen, setpoint power output and modification controller parameter; Realization to the startup of system operation, stop and operation such as reset; The parameter and the waveform of demonstration and saved system operation.System also can realize remote monitoring through fieldbus.
When the utility model dual feedback wind power generation system was incorporated into the power networks, CPU 7 was carried out maximum power tracing, and this moment, the energy of energy storage device 1 was sufficient, and institute's energy output abundance all is connected to the grid.During the load running of electricity generation system free band, system's power consumption is by the load decision, and lighter when load, energy storage device 1 energy is sufficient, and the suitable energy output of CPU 7 controls satisfies load request; Heavier when load, wind energy can't satisfy load request, and this moment, energy storage device 1 powered to the load through generator, improved system's carrying load ability greatly.
Do not have the double-fed induction wind driven generator controller of net side converter and can realize man-machine interaction, carry out setting, the controller Control Parameter of generation mode and discharge and recharge the modification of Control Parameter through man-machine interface; And realize that operation to system starts, stops, operation such as tracking automatically; Parameter variation tendency, error message, warning, energy output data, floor data and the inquiry of historical data in the running.

Claims (8)

1.一种无网侧变流器的双馈感应风力发电机控制器，其特征在于包括有储能装置（1）、充放电控制装置（2）、直流母线电容（3）、转子侧PWM变流器（4）、AD转换模块（5）、中央处理单元(7)，其中中央处理单元(7)的信号输入端通过AD转换模块（5）与储能装置（1）连接，中央处理单元(7)的信号输出端分别与转子侧PWM变流器（4）的信号输入端连接及与充放电控制装置(2)的信号输入端连接，充放电控制装置(2)的信号输入端与储能装置（1）相连，转子侧PWM变流器（4）与充放电控制装置(2)之间连接有直流母线电容(3)，转子侧PWM变流器(4)与双馈感应发电机（8）的转子绕组相连。 1. A doubly-fed induction wind turbine controller without a grid-side converter, characterized in that it includes an energy storage device (1), a charging and discharging control device (2), a DC bus capacitor (3), and a rotor-side PWM A converter (4), an AD conversion module (5), and a central processing unit (7), wherein the signal input end of the central processing unit (7) is connected to the energy storage device (1) through the AD conversion module (5), and the central processing unit (7) The signal output terminal of the unit (7) is respectively connected with the signal input terminal of the rotor-side PWM converter (4) and the signal input terminal of the charge and discharge control device (2), and the signal input terminal of the charge and discharge control device (2) It is connected to the energy storage device (1), the DC bus capacitor (3) is connected between the rotor-side PWM converter (4) and the charging and discharging control device (2), and the rotor-side PWM converter (4) is connected to the doubly-fed induction The rotor windings of the generator (8) are connected. 2.根据权利要求1所述的无网侧变流器的双馈感应风力发电机控制器，其特征在于上述双馈感应电机（8）的定子绕组与三相电网或独立负载相连。 2. The doubly-fed induction wind turbine controller without a grid-side converter according to claim 1, characterized in that the stator winding of the doubly-fed induction motor (8) is connected to a three-phase power grid or an independent load. 3.根据权利要求1或2所述的无网侧变流器的双馈感应风力发电机控制器，其特征在于上述双馈感应电机（8）的转子主轴与升速齿轮箱（9）的主动件相连。 3. The doubly-fed induction wind turbine controller without grid-side converter according to claim 1 or 2, characterized in that the rotor shaft of the doubly-fed induction motor (8) and the speed-up gearbox (9) The active parts are connected. 4.根据权利要求3所述的无网侧变流器的双馈感应风力发电机控制器，其特征在于上述升速齿轮箱（9）的从动件与风力机（10）相连。 4. The doubly-fed induction wind turbine controller without grid-side converter according to claim 3, characterized in that the driven part of the speed-up gearbox (9) is connected with the wind turbine (10). 5.根据权利要求4所述的无网侧变流器的双馈感应风力发电机控制器，其特征在于上述中央处理单元(7)还连接有监控触摸屏（6）。 5. The doubly-fed induction wind turbine controller without a grid-side converter according to claim 4, characterized in that the central processing unit (7) is also connected with a monitoring touch screen (6). 6.根据权利要求1至5任一项所述的无网侧变流器的双馈感应风力发电机控制器，其特征在于上述中央处理单元(7)为可编程序处理器或单片机或DSP。 6. The doubly-fed induction wind turbine controller without grid-side converter according to any one of claims 1 to 5, characterized in that the above-mentioned central processing unit (7) is a programmable processor or a single-chip microcomputer or a DSP . 7.根据权利要求6所述的无网侧变流器的双馈感应风力发电机控制器，其特征在于上述中央处理单元(7)采用455通信与监控触摸屏（6）连接实现人机交互。 7. The doubly-fed induction wind turbine controller without grid-side converter according to claim 6, characterized in that the central processing unit (7) uses 455 communication to connect with the monitoring touch screen (6) to realize human-computer interaction. 8.根据权利要求6所述的无网侧变流器的双馈感应风力发电机控制器，其特征在于上述中央处理单元(7)通过现场总线实现远程监控。 8. The doubly-fed induction wind turbine controller without a grid-side converter according to claim 6, characterized in that the central processing unit (7) realizes remote monitoring through a field bus.
CN2011203551629U 2011-09-21 2011-09-21 Doubly-fed induction wind power generator controller without grid side converter Expired - Fee Related CN202268704U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102386630A (en) * 2011-09-21 2012-03-21 广东工业大学 Double-fed induction wind generator controller of non-grid side converter
CN104377718A (en) * 2014-11-12 2015-02-25 天津理工大学 Active parallel type hybrid energy storage system and working method thereof
CN109149641A (en) * 2018-09-26 2019-01-04 湘电风能有限公司 A kind of permanent-magnetic wind driven generator group realizes the device and control method of isolated operation

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102386630A (en) * 2011-09-21 2012-03-21 广东工业大学 Double-fed induction wind generator controller of non-grid side converter
CN104377718A (en) * 2014-11-12 2015-02-25 天津理工大学 Active parallel type hybrid energy storage system and working method thereof
CN109149641A (en) * 2018-09-26 2019-01-04 湘电风能有限公司 A kind of permanent-magnetic wind driven generator group realizes the device and control method of isolated operation

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