CN214145751U - Power grid high-low voltage fault ride-through system based on controllable rectifier bridge driver - Google Patents
Power grid high-low voltage fault ride-through system based on controllable rectifier bridge driver Download PDFInfo
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- CN214145751U CN214145751U CN202023074816.9U CN202023074816U CN214145751U CN 214145751 U CN214145751 U CN 214145751U CN 202023074816 U CN202023074816 U CN 202023074816U CN 214145751 U CN214145751 U CN 214145751U
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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
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- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The utility model discloses a high low-voltage fault ride-through system of electric wire netting based on have controllable rectifier bridge driver, including electric wire netting 3x400V three-phase main power, inlet wire reactor, fan main control unit, become oar reserve power, reserve power protection fuse, become the oar driver, become oar motor and brake resistance, three main power of electric wire netting 3x400V pass through wire electric connection with the inlet wire reactor, and the inlet wire reactor output passes through wire electric connection with the oar driver that becomes, fan main control unit and become and be provided with between the oar driver and become oar electric sliding ring passageway of oar and communication cable. The utility model discloses an adopt the design of full accuse rectifier bridge, when detecting that the direct current generating line risees early warning voltage value, can realize that the rectifier bridge cuts off fast, guarantee that direct current bus-bar electric capacity does not lead to driver stop work because of the excessive pressure damage to ensure that the oar driver can accomplish safe feathering action, promoted the security performance of becoming the oar system.
Description
Technical Field
The utility model relates to a wind power generation technical field especially relates to a high low voltage fault ride through system of electric wire netting based on have controllable rectifier bridge driver.
Background
Wind power generation converts kinetic energy of wind into electric energy. Wind energy, as a clean renewable energy source, is more and more emphasized by countries in the world, and wind is mainly used by people to pump water, grind surfaces and the like through windmills for a long time, and people are interested in how to use wind to generate electricity at present.
At present, an uncontrollable rectifier driver used by a traditional pitch control system must realize a high-low voltage fault ride-through function by using an external extra main power supply voltage monitoring module and a control contactor, and serious faults such as direct-current bus overvoltage, brake resistance overload and the like easily occur in the operation process, so that the blades cannot realize safe feathering, and serious safety accidents are caused.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the electric wire netting high-low voltage fault ride through system based on having controllable rectifier bridge driver that proposes, the super capacitor discharge management system that becomes the oar that this patent used uses and becomes the design of oar system adoption full-control rectifier bridge, ensures to become the oar driver and can accomplish safe feathering action, has promoted the security performance that becomes the oar system.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a high low-voltage fault ride-through system of electric wire netting based on have controllable rectifier bridge driver, includes electric wire netting 3x400V three-phase main power supply, inlet wire reactor, fan main control unit, becomes oar back-up power supply, back-up power supply protection fuse, becomes oar driver, becomes oar motor and brake resistance, three main power supplies of electric wire netting 3x400V pass through wire electric connection with the inlet wire reactor, and the inlet wire reactor output passes through wire electric connection with the oar driver that becomes, be provided with between fan main control unit and the oar driver that becomes and become oar electric slip ring passageway and communication cable, it includes to become the oar driver: the driver is internally provided with an EMC reactor, a main power supply monitoring device, a controllable rectifier bridge, a direct-current bus capacitor, an IGBT power unit, a backup power supply protection diode, a power module, a driving processor, a rectifier bridge driving unit, a direct-current bus voltage monitoring device, a braking chopper unit, a built-in variable pitch controller and a canopy bus communication module.
Preferably, the driver built-in EMC reactor is electrically connected with the main power supply monitoring through a wire, and the main power supply monitoring is electrically connected with the controllable rectifier bridge through a wire.
Preferably, the main power supply monitoring and driving processor is electrically connected through a lead.
Preferably, the controllable rectifier bridge is electrically connected with the rectifier bridge driving unit through a wire, the rectifier bridge driving unit is electrically connected with the driving processor through a wire, and the controllable rectifier bridge is a fully-controlled thyristor.
Preferably, the IGBT power unit is electrically connected to the drive processor through a wire.
Preferably, the variable pitch backup power supply and the backup power supply protection fuse are electrically connected through a wire, the variable pitch backup power supply and the backup power supply protection diode are electrically connected through a wire, and the variable pitch backup power supply is electrically connected with a driver direct-current bus through a wire.
Preferably, the power module is electrically connected with the driver direct current bus through a wire.
Preferably, the braking chopper unit is electrically connected with the driving processor through a wire.
Preferably, the built-in variable pitch controller and the canopy bus communication module are electrically connected with the fan main controller through wires.
The utility model has the advantages that:
1. by adopting the design of the fully-controlled rectifier bridge, when the fact that the direct-current bus rises to the early warning voltage value is detected, the rectifier bridge can be quickly turned off, the fact that the direct-current bus capacitor stops working due to overvoltage damage is avoided, therefore, it is guaranteed that the pitch-controlled driver can complete safe feathering action, and the safety performance of a pitch-controlled system is improved.
2. By adopting the variable-pitch driver integrating the main power supply monitoring and the controllable rectifier bridge, the additional power supply monitoring module, the main power supply control contactor and related complex electric circuits in the variable-pitch shaft control cabinet can be replaced, the number of components in the cabinet is reduced, and the variable-pitch system is simpler and more reliable.
3. By adopting the design of the fully-controlled rectifier bridge and the braking chopping unit capable of monitoring the discharge power, when the brake resistor is monitored to be in discharge overload, the rectifier bridge can be quickly switched off, the direct-current bus voltage is instantly reduced, the braking chopping unit and the brake resistor are protected from stopping working of the driver due to overload damage, so that the safe feathering action of the pitch-variable driver can be ensured, and the safety performance of the pitch-variable system is further improved.
4. By adopting the variable-pitch driver designed by the controllable rectifier bridge, the rectifier bridge adopts a low-slope charging strategy for the direct current bus when the main power supply is electrified or the fault is recovered, so that the peak current of the main power supply at the moment is reduced, and the electrical equipment on a power supply loop of the variable-pitch main power supply is protected from being damaged due to the large-current impact.
Drawings
Fig. 1 is a system diagram of a power grid high-low voltage fault ride-through system with a controllable rectifier bridge driver according to the present invention.
In the figure: 1. grid 3x400V three-phase mains; 2. an incoming line reactor; 3. a fan main controller; 4. a variable pitch backup power supply; 5. a backup power protection fuse; 6. a pitch drive; 7. a variable pitch motor; 8. a brake resistor; 601. an EMC reactance is arranged in the driver; 602. monitoring a main power supply; 603. a controllable rectifier bridge; 604. a DC bus capacitor; 605. an IGBT power unit; 606. a backup power protection diode; 607. a power supply module; 608. a drive processor; 609. a rectifier bridge drive unit; 610. monitoring the voltage of a direct current bus; 611. a brake chopper unit; 612. a variable pitch controller is arranged inside; 613. a canopy bus communication module.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Reference will now be made in detail to embodiments of the present patent, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present patent and are not to be construed as limiting the present patent.
In the description of this patent, it is to be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientations and positional relationships indicated in the drawings for the convenience of describing the patent and for the simplicity of description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the patent.
In the description of this patent, it is noted that unless otherwise specifically stated or limited, the terms "mounted," "connected," and "disposed" are to be construed broadly and can include, for example, fixedly connected, disposed, detachably connected, disposed, or integrally connected and disposed. The specific meaning of the above terms in this patent may be understood by those of ordinary skill in the art as appropriate.
The utility model discloses a control mode comes automatic control through the controller, and the control circuit of controller can realize through the simple programming of technical staff in this field, and the supply also belongs to the common general knowledge in this field, and the utility model discloses mainly used protects mechanical device, so the utility model discloses no longer explain control mode and circuit connection in detail.
Referring to fig. 1, a high low-voltage fault ride-through system of electric wire netting based on have controllable rectifier bridge driver, including electric wire netting 3x400V three-phase main power 1, inlet wire reactor 2, fan main control unit 3, become oar backup power 4, backup power protection fuse 5, become oar driver 6, become oar motor 7 and brake resistance 8, electric wire netting 3x400V three main power 1 pass through wire electric connection with inlet wire reactor 2, and inlet wire reactor 2 output and become oar driver 6 and pass through wire electric connection, be provided with between fan main control unit 3 and the oar driver 6 and become oar electric slip ring passageway and communication cable, it includes to become oar driver 6: the system comprises a driver built-in EMC reactor 601, a main power supply monitoring 602, a controllable rectifier bridge 603, a direct-current bus capacitor 604, an IGBT power unit 605, a backup power supply protection diode 606, a power supply module 607, a driving processor 608, a rectifier bridge driving unit 609, a direct-current bus voltage monitoring 610, a brake chopper unit 611, a built-in pitch controller 612 and a canopy bus communication module 613.
The driver built-in EMC reactor 601 is electrically connected with the main power supply monitoring 602 through a conducting wire, the main power supply monitoring 602 is electrically connected with the controllable rectifier bridge 603 through a conducting wire, and the driver built-in EMC reactor 601 is connected with an external main power supply in series to supply power to the controllable rectifier bridge 603 for input, so that the anti-electromagnetic interference capability of the driver is improved.
The main power monitor 602 is electrically connected to the driving processor 608 through a wire, and the driver built-in main power monitor 602 measures the three-phase voltage and frequency value of the input main power in real time and sends the three-phase voltage and frequency value to the driving processor 608.
The controllable rectifier bridge 603 is electrically connected to the rectifier bridge driving unit 609 through a wire, the rectifier bridge driving unit 609 is electrically connected to the driving processor 608 through a wire, and the controllable rectifier bridge 603 is a fully-controlled thyristor, so that the charging voltage of the rectifier bridge to the dc bus capacitor 604 is fully controllable. The dc bus voltage is measured by the dc bus voltage monitor 610 and sent to the drive processor 608.
The IGBT power unit 605 is electrically connected with the driving processor 608 through a wire, and the IGBT power unit 605 is controlled by the driving processor 608 to convert direct-current bus voltage into alternating current with frequency modulation and voltage regulation, so that a power supply is provided for the variable pitch motor 7, and the variable pitch motor is controlled to change speed and direction.
Become oar back-up source 4 and back-up source protection fuse 5 and pass through wire electric connection, become oar back-up source 4 and back-up source protection diode 606 and pass through wire electric connection, become oar back-up source 4 and have driver direct current bus through wire electric connection, by the direct current power supply that becomes oar back-up source 4 and pass through back-up source protection fuse 5 and provide, connect the back-up source protection diode 606 back that is used for preventing connecing the reverse polarity protection, with driver direct current bus switch-on.
The power supply module 607 is electrically connected with the direct-current bus of the driver through a conducting wire, the power supply module 607 arranged in the pitch-variable driver 6 is used for converting the voltage of the direct-current bus into 24VDC \15VDC \5VDC to supply power for other control units, the input of the power supply module allows the power supply of the direct-current voltage in an ultra-wide range, and the control unit of the pitch-variable driver is ensured to still work when the low-voltage power supply of the backup power supply is performed.
The braking chopper unit 611 is electrically connected to the driving processor 608 through a wire, and when it is monitored that the voltage of the dc bus exceeds the braking chopper start voltage value, the dc bus is immediately started to discharge the voltage of the braking resistor 8, so as to protect the dc bus from overvoltage.
The built-in variable pitch controller 612 and the canopy bus communication module 613 are both electrically connected with the fan main controller 3 through wires.
The working principle is as follows: when detecting that the direct current bus rises to an early warning voltage value, the rectifier bridge can be quickly turned off, and the fact that the driver stops working due to overvoltage damage is avoided for the direct current bus capacitor 604, so that the fact that the variable pitch driver 6 can complete safe feathering action is ensured, the safety performance of the variable pitch system is improved, meanwhile, through the adoption of the fully-controlled rectifier bridge and the design of the braking chopping unit 609 capable of monitoring discharge power, when the brake resistor 8 is monitored to discharge and overload, the rectifier bridge can be quickly turned off, the direct current bus voltage is instantly reduced, the braking chopping unit 611 and the brake resistor 8 are protected from stopping working due to overload damage, so that the fact that the variable pitch driver 6 can complete safe feathering action is ensured, and the safety performance of the variable pitch system is further improved.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (9)
1. The utility model provides a high low-voltage fault ride-through system of electric wire netting based on have controllable rectifier bridge driver, includes electric wire netting 3x400V three-phase main power (1), inlet wire reactor (2), fan main control unit (3), becomes oar reserve power (4), reserve power protection fuse (5), becomes oar driver (6), becomes oar motor (7) and brake resistance (8), three main power (1) of electric wire netting 3x400V pass through wire electric connection with inlet wire reactor (2), and inlet wire reactor (2) output and become oar driver (6) and pass through wire electric connection, be provided with between fan main control unit (3) and the oar driver (6) and become oar electric slip ring passageway and communication cable of oar, it includes to become oar driver (6): the system comprises a driver built-in EMC reactor (601), a main power supply monitoring (602), a controllable rectifier bridge (603), a direct-current bus capacitor (604), an IGBT power unit (605), a backup power supply protection diode (606), a power supply module (607), a driving processor (608), a rectifier bridge driving unit (609), a direct-current bus voltage monitoring (610), a brake chopper unit (611), a built-in variable pitch controller (612) and a canopy bus communication module (613).
2. A system for grid high-low voltage fault ride-through with controllable rectifier bridge driver according to claim 1, characterized in that the driver built-in EMC reactance (601) is electrically connected with the main power source monitor (602) by a wire, and the main power source monitor (602) is electrically connected with the controllable rectifier bridge (603) by a wire.
3. The grid high-low voltage fault ride-through system with the controllable rectifier bridge driver as claimed in claim 2, wherein the main power source monitor (602) is electrically connected with the driving processor (608) through a lead.
4. The grid high-low voltage fault ride-through system with the controllable rectifier bridge driver as claimed in claim 3, wherein the controllable rectifier bridge (603) is electrically connected with a rectifier bridge driving unit (609) through a wire, the rectifier bridge driving unit (609) is electrically connected with a driving processor (608) through a wire, and the controllable rectifier bridge (603) is a fully-controlled thyristor.
5. The grid high-low voltage fault ride-through system with the controllable rectifier bridge driver as claimed in claim 4, wherein the IGBT power unit (605) is electrically connected with the driving processor (608) through a wire.
6. The grid high-low voltage fault ride-through system based on drivers with controllable rectifier bridges according to claim 1, wherein the pitch backup power supply (4) is electrically connected with the backup power supply protection fuse (5) through a wire, the pitch backup power supply (4) is electrically connected with the backup power supply protection diode (606) through a wire, and the pitch backup power supply (4) is electrically connected with a driver direct current bus through a wire.
7. The grid high-low voltage fault ride-through system with the controllable rectifier bridge driver as claimed in claim 6, wherein the power module (607) is electrically connected with the driver DC bus through a wire.
8. The grid high-low voltage fault ride-through system with the controllable rectifier bridge driver is characterized in that the braking chopping unit (611) is electrically connected with the driving processor (608) through a lead.
9. The grid high-low voltage fault ride-through system with the controllable rectifier bridge driver is characterized in that the built-in pitch controller (612) and the canopy bus communication module (613) are electrically connected with the fan main controller (3) through wires.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023074816.9U CN214145751U (en) | 2020-12-18 | 2020-12-18 | Power grid high-low voltage fault ride-through system based on controllable rectifier bridge driver |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202023074816.9U CN214145751U (en) | 2020-12-18 | 2020-12-18 | Power grid high-low voltage fault ride-through system based on controllable rectifier bridge driver |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4238806A1 (en) * | 2022-03-01 | 2023-09-06 | Volvo Truck Corporation | An electric machine drive arrangement for a heavy-duty vehicle |
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2020
- 2020-12-18 CN CN202023074816.9U patent/CN214145751U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4238806A1 (en) * | 2022-03-01 | 2023-09-06 | Volvo Truck Corporation | An electric machine drive arrangement for a heavy-duty vehicle |
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