TW201036302A - A redundant, supercapacitor, back-up power supply for wind turbine conversion and control systems - Google Patents

Abstract

A back-up power supply for use with wind turbine controls powered by direct current (DC). The power supply comprises a first power supply rated for the full power requirements of said controls, a second power supply rated for the full power requirements of said controls and an OR connection between a load and said first power supply and said second power supply. The OR connection is either a diode OR-gate or a bridge rectifier.

Description

201036302 VI. INSTRUCTIONS OF THE INVENTION: FIELD OF THE INVENTION The present invention relates to fluid turbines (e.g., wind turbines under water turbines), as well as other prior power, and more particularly, conversion and control systems, utilizing storable redundancy Remaining power supply] = The source provides DC power and DC backup power. [Prior Art] Since the power supplied by the utility grid is not 100% reliable, it is necessary to provide backup power for wind turbine control, and also to indicate the practical interruption of the turbine must remain connected to the grid for a long time when the grid is interrupted ( Utility ride through requirements). In addition, capacitor storage systems, and in particular supercapacitor energy storage systems, provide surge current capacity that is much lower than the current limit rating of the DC power supply itself; this feature is in high-performance contactors with other short-term loads (its It is often useful when the spike current is high but the current rating is low. Supercapacitors are electric double layer capacitors, also known as electrochemical double layer capacitors (EDLCs, "Electrochemical Double Layer Capacitors") or pole capacitors. Supercapacitors have a very high energy density compared to conventional electrolytic capacitors; supercapacitors are created to fill the gap between the electrolytic capacitor and the battery. To alleviate the problems of power surges and mechanical loads in fixed speed wind turbines, wind power producers have tended to use variable speed wind turbines. in

A variable speed wind turbine is described in US Patent No. 7,072,110 (issued May 9, 2006) by Clipper Windpower Technologies, Inc. 201036302; Various publications for variable speed wind turbine designs, such as the Wind Energy Handbook (Tony Burton et al., John Wiley & Sons, 2001). Ο

G-like power is supplied by the AC power of the utility grid to provide wind turbine controlled power. Traditionally, the way to control the backup power of a wind turbine is to apply some type of uninterruptible power supply (UPS, "Uninterruptible p〇wer"), which includes a power supply, a battery, and an inverter. Provides alternating current (AC, “Alternating Current”) to replace common AC losses due to power outages. Most ups systems use some type of high-speed switch that connects the UPS to when a line break is detected It is protected. Other more complicated and expensive settings remain connected during the interruption of the line operation. In other cases, these devices require a DC-to-AC inverter to provide the current required by the load. The US Patent No. 6,737,762 to Emg is a conventional example of an uninterruptible power supply (:). The load is drawn from the publicly supplied AC power source until the fault condition occurs. When the fault condition occurs, the load is about to be self-contained AC. The power drawn by the power supply is switched to the inverter ac output of the ups. The energy storage device keeps the DC voltage at the input of the inverter until it starts and accelerates enough to The degree of DC ink supply. The force = switching device 'is used to provide uninterrupted power to a critical load. The non-critical load is switched to the power of the receiving inverter output. The AC power signal is subject to a fault condition for a short period of time.

Patent No. 6,921,985 to Janssen is an example of another conventional uninterruptible power supply (UPS) for use in a wind turbine. Janssen discloses a wind turbine that includes a blade pitch control system for adjusting blade pitch and a turbine controller coupled to the blade pitch control system. A first power source is coupled to the turbine controller and the blade pitch control system to provide power during the first mode of operation. An uninterruptible power supply (UPS) is coupled to the turbine controller and coupled to the blade pitch control system to provide power during a second mode of operation. In the event of a fault condition, the turbine controller detects a transition from the first mode of operation to the second mode of operation in the power supply grid and adjusts the blade pitch (modification) spacing in response to the transition. Until recently, almost all UPS systems used some type of sealed lead acid battery to provide backup power, which typically lasted 10 to 60 minutes. Although there is a tendency to use supercapacitors in this same architecture, its use is still limited due to the cost considerations of providing storage capacitors equivalent to their battery counterparts. Finally, regardless of the efficiency of the current inverter and power supply, even in the best system, the conversion from AC to DC to AC is still no higher than 75% or 80%. Providing the complexity of the second power supply, battery, and inverter makes this backup system less reliable than the systems it supports. Therefore, in the case of a wind turbine, there is a need for a reliable and efficient backup power setting. 201036302 [Summary of the Invention] The present invention solves the above-mentioned technical situation of the door of the Bg force turbine's system and the system for the wind (four). In contrast to the AC control used, in accordance with the present invention, it is used to supply power from a straight-line current. In addition, - electricity: it is the complete power supply of the control unit - the private source ' is the end of the control unit i Ο ΐ :; ΐ (, which is located in the super capacitor storage: with the second power supply Between the 0R == heavy diode bridge rectifier. 忒一极体 or 闸 or four due to the unsuccessful period of interruption, 不 Γ quot quot quot quot quot quot quot quot quot quot quot quot quot For the fan, the AC drive system is designed to only require the D sub-system sensor of the present invention, the original contactor of the external book, the secondary system such as the turbine control unit or the device, And the internal smart device (for example: 24 VDC) operation. The 鞞, 益 control board) are designed to be VDC (such as the capacitor storage and its related two provide this - configuration, the backup power supply can have a pool. Because of the DC supply core form Excluding the form of inverter and electrode body, the system, for all control components and sensors, in the second fault does not wind, use a variety of DC power supply, so one of the power supplies are (4) A significant impact on (4) the turbine The standby power supply system is rated for complete power requirements. The advantage of storage is also redundancy. Therefore, it not only provides energy storage independent power supply. Dual power supply design, because it uses two The pole or gate (OR-gated) is set to provide continuous dc power to the capacitor 201036302 == in the event of a single power failure. 糸, - All key components of the contactor and subsystems are DC 2 and itself. , there is control itself and there is protection of the mountain ',,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, Power supply, regardless of the situation of the utility grid: Shore 1; Wide (1) The control system should be used during normal operation... The original method is to increase the power supply between the public materials and the fourth power supply, and the current limit of the DC power supply itself. If the current is for surge power, the energy storage capacity of this system is the total θ. Internal 'and no need for i-knife change or active power monitoring to use I for the controller. This is because it was at that time. Always 100% up and running The storage system, the storage system is instantaneous and uninterrupted (seamlessl is interrupted when the source is interrupted, during which the supercapacitor is charged for the fault. When the normal operation super electric grid is fully charged, it is not needed. The potential drop of the capacitor increases, and the charging process τ stops the charging process; but the capacitor is compensated for the turbulence or the grid fault: the two lines stop. When the super power supply becomes available again when the DC power source becomes available again, it is completely discharged. The supercapacitor power system is a kind of method. It does not use the traditional uninterruptible power supply (the combination of τ τ energy storage capacitor and power supply, all ', is maintained by using the super power interruption period, Benefits and control can be outside the load 1

ZU1UJ0JUZ ο ❹ AC load (such as + it meets the backup power, shield inductor motor) are required to be in the request of Christine, the source of the quotation and the battery charger. @Using expensive and complicated' The present invention has __, switching or matching storage. _______ The present invention has the advantage of carrying ' without the need for a limited current capacity. The capacity allows for large peak currents to be limited to the internal impedance ratio of the battery: a DC power supply. Due to the super electric current, which is just above the Dc power, it can provide a very high load rating according to the invention, not only the current limit of the bridge. Therefore, the root provides additional energy retention. The advantage of the present invention for interrupts, also for high-risk situations, is that even the redundant power supply of the loan allows the connection to be during a power failure, and the advantages of the present invention are i. Qiao's storage supervisor A battery is _ times higher, _^= charging/discharging cycle-time ratio because the supercapacitor is not long, no problem. In addition, the design of the pool is more reliable and jade-repairable. This setting has the advantage over the conventional electric appliance. Capacitor storage system charging] /, unlike the battery, no temperature compensation is required

The storage availability is $required. [Embodiment] Referring to Figure 1, a block diagram of the machine equipment. Fixed-Pitch Servo System The basic components of the variable-speed wind turbine system according to an embodiment of the present invention are as follows: (1) a turbine drive chain including a rotor hub 4, a blade rotor including a root blade 42 and a 201036302 extender, a blade 44, and a gear Box and permanent magnet generator "Permanent Magnet Generat〇r'') 48; (2) Generator rectifier / inverter unit 50; (3) Control system, including turbine control unit (tcu, "Turbine C_ol Unit" ), generator control unit (GCU, "to dirty

Control Unit''62; (4) Scratch fixed transfer and data acquisition (SCADA, "Supervisory c_r〇I And Acquisition") interface 64, which connects the system to a utility grid. The turbine includes - or a plurality of rotor blades 42, 44 coupled by a rotor valley fixed between the angle-corner, which provides power via the blade drive signal bus 74, through the slip rings. The trough is mechanically coupled to the thirteen rotor shaft rod 46, which transmits the torque of the turbine to the gearbox. Rod, with a sensor to measure turbine speed, its output shaft ==:, _ shaft is a long-term magnet or a field-synchronous generator via a gearbox. The output of the transmitter is connected to block 50, which includes - 敕, 转换 converted to DC η, * secret L, positive 丨 L state 'which converts the power to the % voltage and current on the DC bus (the platoon is connected to The wind turbine generator G coffee tears the inverter, which adjusts the torque of the DC motor. The inversion ^ - this control the source factor two, * 乂 to the grid and by supplying the single-electricity to the grid system And adjust this DC mine, * yuan (gcu) 62 control block electricity k. The motor control unit generates a single input (for example: grid power ==,, (4) from its own measured load power demand 1 (need to be longer than the entry) , discharge voltage, grid current receiving command (5): == coffee list TM, electric hair measurement and current measurement system 10 201036302 derived from the output of block 50, and used by the GCU to synchronize the inverter with the AC grid. The device generates all of its input voltage and current signals and converts them into a pulse width modulation (PWM, "PulSe-width_m〇dulated,") signal that tells the switches in inverter 50 when to turn them on and off. The open relationship is controlled in response to the current command supplied by the TCU. Adjusted Af output current. The line filter on the output of the inverter is used to reduce the ❹ Ό 反相 益 benefits generated by the 塾ϋ fixed converter 52 that is transferred to the utility grid. As shown in the patent No. 7,072,110, TCU 60 and GCU rated power supply H are used in multiple generator systems. When the turbine is below the complete low energy generation, the generator. When the energy source (wind, water, etc.) A number of synchronous 'controllers can be used to sort the on-line sequence in the turbine. Each generator in the control machine uses a low power supply to increase the order of system effects, so that the order of the controllers is alternated as needed, The generator is connected to the TCU 6Γ each generator is connected to _ substantially similar use. For example, the turbine speed receiving sensing is the sensor information provided by the wheel 58, the acceleration (the angle of the blade, the tower acceleration) Vibration), pod line parameters, b-speed) wind speed, wind direction, wind turbulence, pod position, AC other fault phase s; bus voltage, generator voltage, power output, and sensed state via GCtj62. TCU60 control Turbine The main actuator, and the PcU (Pitch Control Unit', 66) control generator (ECU, "Extension Control Unit,") 68, which is complicated by these components. The harmonic control force maximizes the energy age of the thirteenth turbine, and at the same time makes the machine 11 201036302 == to the lowest. Finally, the Τ_ also controls the machine of the machine - keeps pointing in the wind. TCU6Q is also connected with the turbo. System 64 communication to provide and receive sense - and status information number; = unit (TCU) will use the appropriate generator torque as the speed control motor unit (GCU), this signal is based on the rotor speed, : The required torque (based on a look-up table or algorithm). The conversion torque command is used to assist the gearbox to reduce the amplitude. It is switched by the torque command issued to the absolute 亟 亟 bipolar transistor (IGBT, “Insulated (5) ( (4) ^ansistor·) In the high-speed wind, the turbine is maintained as a fixed average output power via a fixed torque command from the TCU and a solid-state speed command sent to the system. The system controls the variable rotor radius (via blade extension/reduction) ), the spacing of the Zengzi blades, and the rotation rate of the rotor. Tcu (10) determines the angle between the blades by means of: or look-up table. The blade spacing command = tc is transmitted to the blade spacing control unit _) 66, Generating the drive signals m, D2, and D3, thereby passing each of the three servo motors of the respective blades through the bus bar %. ^ CU 6〇 also by algorithm or table lookup The manner determines that the desired position of the blade extension 44 can be extended/may 60. The extension command 72 is by the foot.

Unit^ is sent to the blade extension control unit (ECU, "Extension C〇ntrol over-sink,: 8' which generates the blade extension drive signals E1, E2, E3, so that the distance φ is not 74 until the extension/reduction Do not extend the blade to the three hard-wearing horses. 201036302 DC power supply and standby power supply are called AC input 53 to % output ^ 52 receiving AC power supply 53, and unit 62, turbine, which provides power to the generator The other (4) =, the wheel sensor 58 and the design of the motor and the fan are controlled by the AC 11 system (for example, the pump, DC « electric power method, electricity. Because it does not exceed 3 Seconds 〇

The pump, the motor and the wind are not required to be powered by the DC. Therefore, the SUb-SyStem sensor, the external, all the contactors, the secondary systems such as the turbine control unit 6〇, the hair 258, and the internal smart device (Example 50) are all designed. In order to make a single 62 with a 24VDc and a converter control board source, it can have a capacitance. By providing this - configuration, the backup inverter is connected to the battery. ~ In the form of a charger, the AC is excluded. Although the turbine requires a "intermediate" turbine control unit and its associated break-off" common disturbance for three seconds, the vortex for the length of the smart control sensor needs more than one to maintain itself The angle is modified to be used or modified to provide the turbine blades at a ratio of 2 to 2 per second angular position from the operating pitch. Most of the vortex blades operate 90 degrees divided by 2 or 7.5 degrees, so the time required is 1 second (maximum) for the ratio of turbines. For applications with a higher ratio for most applications: between: 9Q/7.5 or 12 seconds. All maintain their intelligent control, narrowing the S'TCU does not need to be in the entire time, or a section of the blade to keep the turbine line offline and the turbine power supply output is zero. 201036302 Time. In this case, the 1 turbine will no longer be fisher. This time will not exceed 3 sets from the micro-pitch setting, and A will be synchronized by the grid, 2 degrees per second equals the turbine control unit ^_pitch angle). 30 divided by the interval, and when the spacing is high, 7 5 degrees per second, 15 seconds maximum. For most applications, the starting capacitor is 4 seconds. For now it is required to provide 4 to 45 seconds < standby power. %/Renewal System Design Since DC is now supplying power to all, a more reliable power supply is required. In order to achieve this need, the source (in the case of a diode gate) has a significant impact on the operation of one of the 彡, using at least two power turbines. Every time a solid fault occurs, there is no need for a complete power supply for the wind system.冨 is only rectified A in the rectified state. : When it is turned out, almost all DC power supplies should be filtered and smoothed. Many power supplies are also in i DC, a type of capacitor energy storage. The linear power supply capacity has a larger factor than the switching power supply, and the energy storage of the Bergan class has become significantly larger but in the industry. Seek to change the power supply 】 = and so on. =, the lowest level makes the components available, and for contactors and wisdom = drop = and pass tests determine all up to 9 to 14 ν 'Ί and the sensor is properly low on its supply terminal Electricity; ^ DC execution. Therefore, assuming 15 VDC is the equivalent required for proper operation, the relatively fixed discharge current in each capacitor is relatively low (ESR, "Equivalent Series Resistance"), electricity 14 201036302

The operation of the container can be expressed by the following formula: i=C*dV/dT where 1 is current (amperes), C is the capacitance value (Faraday), cTV is the discharge voltage, and dT is the discharge time; solution C, C = i/ dY*dt Ο 咖 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此 因此甩/Claw (power supply for the original turbine control unit 0Dp) ^ Fixed 4 amps. The total capacitance required is the farads. It is further assumed that this time 咚μ合审士 m ^ ^ decreases with voltage. * The operation is larger because the current extraction of the system will be # 申申二人所1^ and the test DC storage system application standard, computer m solution capacitor (four) up to some age, and the room to grasp. Brother 2 can't ride with $, each component of the system is not 'two 270,000 microfarads know' " corpse scare, Ladi, 35 volt capacitor is used for connection: power diode gate rear rear A total of 54.54 Faraday. If the test is not displayed, the controller will maintain the effect of about 2 to 3, ^ ^ ===== can be used to indicate that each body is specified and provided in the high state of the heart during the pull-in period, so that Φ rabbit The sling of the muscle is submerged by the capacitor spike current or the input surge to be lower than its peak value. Maximum, instantaneous input current. Brother—taken when it is turned on. The complete test setup is connected for each mouthpiece and measures the peak current of 201036302. Since the total current required for the turbine control unit to turn on multiple contactors 'spikes at the same time is about 12 amps, the power supply in the test setup is 4.8 amps because the peak period is only 20 milliseconds and the remaining 7.2 amps are 0.54. Faraday's capacitors are simply supplied. Supercapacitor Energy Storage System (First Embodiment) The facility sometimes indicates that the interruption transition time takes up to 3 seconds, and it is clear that standard electrolytic capacitors cannot be adequately stored to meet these requirements. The Turbine Control Unit (TCU) specification shows that the maximum controller current of 6 amps is required to last 2 to 3 times, or 6 to 9 seconds, of the longest facility interruption transition specification, which requires 4 to 8 Faraday capacitance values to achieve these types. The number; the only way to get this kind of storage is to use a supercapacitor. Unlike electrolytic capacitors, supercapacitors are only available for 2 to 2.5 volts. This means that under this operation, there will be 12 series placed, which reduces its total capacitance by 12. However, 50 Faraday capacitors are readily available, and at least two manufacturers offer almost identical components. A schematic diagram of the new standby power board 24VDC is shown in Figure 3. The DC power input (TB1) is connected to draw power from the AC utility grid. Each phase (1 + and 2 + ) is connected to the output of the two diodes (D1, D2) and is connected to the 24V output (TB2, TB3, TB4). The output of diode D1 is connected to 12 series connected supercapacitors (Cn, C2, ..., C12), while the output of diode D2 is connected to 12 series connected supercapacitors (C13, C14, ..., C24). The total capacitance that can be achieved with this design is 50/12 X2 or 8.3 Farad 16 201036302. The total time taken for the discharge level due to the fixed draw current of 6 amps, the difference between the lc Μ volt state minus 9 volts (1) and the discharge level (full charge: value)

dT=dV/I*C and seconds. Of course 'this is where the capacitance value remains at 50 Faraday, not all of which will happen. During the period of operation, Ο 于 : 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 11 For 3 seconds. Another aspect of the interrupt controller design during the 7-day milk condition is that the voltage drop is reduced and the current reduction is affected by a variety of symplectic power states. , including turbine energy. 亀 during this transition

The 12 to 20 second medium (t) storage system can provide the TCU with the above calculation results, which meets and exceeds the capacitor design for most applications (all components still contain 15 times the capacitance) When the value is completed, it is smaller than the electrolytic capacitor, but refer to the wiring diagram of the whole system (including the power supply (PWRbP·) PWR1 and the volt standby circuit board) according to the 4th 4+ and 3rd diagrams. 3 shows the pick-up or _ connected to the 24 volt standby circuit board', 12 series connected supercapacitors (C Bu C2, 17, 201036302 C12) are each a 4.15 Faraday single supercapacitor; the same, the third The 12 series-connected supercapacitors (C13, C14, ..., C24) shown in the figure are each a 4.15 Faraday single supercapacitor. Operating with two independent parallel power supplies requires their shared current, which can be adjusted by these The output voltage is easily achieved with a nominal voltage (24.5 VDC in this example) +/- 0·1 volts; it provides a good way to share current. The current drawn from each source during operation with the turbine in the Rim state Between 2.0 and 3.0 amps, the difference between the two power supplies is approximately 100 to 150 mA. When designed as a system, failure of either power supply (PWR1 or PWR2) will not cause significant problems for the operator and the turbine control unit. By determining the output voltage by observing the LEDs on the standby power board or by using a simple DVM, it is determined which power supply has failed. According to the present invention, the main components of the DC power supply in the turbine are connected in place. Power board at connectors A, B, ..., L. Use a combination of control components that are always powered by DC power (during normal operation and failure) and use supercapacitors in the power board circuit as a backup The system of the present invention can be made simple and at the same time very efficient and reliable. Supercapacitor Energy Storage System, 7.5 MW Turbine (Second Embodiment) The development of supercapacitors and the need for high current power supplies and longer penetration times have resulted in The need for an evolutionary version of redundant energy storage systems, especially for the use of larger multi-million watt wind turbines (now designed to approach 10 MW grade). In addition, a smaller and lighter switching power supply 18 201036302 is required to replace the linear power supply. Figure 5 shows that the main components of the control system of this power system machine are the same 'turbine' of Dc ° DC power system. Two 10 ampere-cut H power supplies, connected to the bridge through the rectifier (brain) Q, source (p·TM) Faraday energy _ storage slot which feeds 52.5 依次 依次 in turn, special super capacitor mold ::: Package method. At a rated voltage of 30 volts Dc: string = connected, yielding a 52.5-method Faraday, which exceeds the total capacitance of the Λ-Λ 约为 about 52 technological advances, 6 times the amount of 4 storage. Also, since this board is the same.敕::: The cost of the group is almost the same as the conventional standby current performance 1 of Figure 2. The increased current efficiency, increased peak power backup, and the ability to break the transition 'all of which are shown in Figure 2' are newer. Generations of supercapacitors' Nippon Chemi-Con with a better temperature than the ones that are more expensive than the ones that are purchased for the module, each capacitor is the same as the spoon assimilation 0 (Nippon Chemi-Con): : Active assimilation of the binary. The footprint required for the two of the spare boards is smaller than the conventionally available area, and the difference in size is generated in the vertical direction. The larger the adjuster is in the TCU housing. Close layout. In addition, switching between this ♦), also ^ is qualitatively smaller than the original 7.2 amp linear power supply. "The OR^ gate is charged with a diode bridge rectifier to use two dual-capacitor energy storage systems for the two power supplies. This bridge rectifier enables ~, two of which are "OR gate" driven, while Two 19 201036302 provide reverse voltage transient protection between each power supply and ground terminal, as shown in Figure 5. (5), or negative triple redundancy of power supply, three-phase AC input, super electric _ system (third embodiment) K food energy storage as shown in Figure 6, three 10 amps, switching, μ, Shiyuan It is used to provide charging of the 24 volt controller distribution system and =:: electricity in the wind turbine, these power sources are controlled from the main control machine.

兀i (MCU “lVra<;fA

Control Unit") Input 4 VAC / 3 phase 'r individual phase feeds with 24QVAC. Due to load demand from: two of the three power supplies of the power supply' thus this system can be in single phase: three individual facilities The full voltage is provided on the 400VAC line, and the standby capacitor is generated without interruption when the two phases fail. This capability is achieved by using a two-connect rectifier as shown in Figure 6. In addition, the use of a larger electric "# three-phase bridge produces a total of 233 Faraday, where storage for the power output" total DC produces a total of 6 Faraday. Since the three power supplies are connected in parallel at 15 volts, the total n n n± ^ ^ /A ° 丨 is in the charging cycle - much more, but running for about 60 seconds, depending on the Faraday version of the current limiting characteristics. ^ Short circuit of the power supply itself Use a power supply to generate a higher d: p) for distribution. As in the previous power supply, spike: dry: out (up to 2 consecutive = = provided by the container, and does not originate from the M electricity = fitness body is in the peak current required by the super series. Well, the contact is made by the circuit breaker (4) Upper division; easy to handle. This ^^^^ includes the individual breakers of the safety system of the control unit itself of the wind turbine 20 201036302. Finally, each switching DC power supply has a "warning output" as shown in the figure. Each is connected to a turbine mainframe, or a slave controller, for monitoring the health of each of these power supplies. Once any single power failure occurs, due to the redundant nature of this design, only a "warning" status will be issued for the operator. It gives time to repair and return to a complete service. During this period, the system can operate as usual, and in fact this warning will not cause interruption of the operation of the controller at all. 冗余 Redundant supercapacitor power system according to the present invention It is a unique method of energy storage. It does not use a traditional uninterruptible power supply system. By using supercapacitors and DC power supplies, all electrical storage and control can be used. It is maintained during power interruptions, except for AC loads. Since most AC loads (such as inductive motors) need to be turned off during power interruptions, they meet the need for an expensive and complicated AC inverter and battery charger for the backup power supply. The requirements of this type of storage system are: - * Storage capacity is continuous, no need to switch or sense to connect storage capacity. Call storage capacity allows large peak current load without current limitation Place the DC power supply. Since the internal capacitance of the supercapacitor is lower than that of the battery, it can provide very high short-term current. The redundant power supply can operate continuously, even during a single power failure. * The charging/discharging cycle of the storage capacitor The cycle is 1,000 21 201036302 times higher than the battery, and it has a long life and no problem. * Unlike the battery, it does not require temperature compensation to charge the capacitor storage system. * Uses three-phase mode and only loads three power supplies. Both, the full supply current and voltage capacity can still be used during single-phase loss of the power supply. The invention and its mode of operation can be fully understood from the embodiments shown in the drawings, wherein: FIG. 1 is a block diagram of a variable speed wind turbine when the invention is embodied; FIG. 2 is a conventional storage a circuit diagram of a system using standard, computer grade, electrolytic capacitors; Figure 3 is a circuit diagram of a first embodiment of the storage system of the present invention; and Figure 4 is a circuit diagram of the overall storage system when the present invention is embodied; Fig. 5 is a circuit diagram of a second embodiment of the storage system of the present invention; Fig. 6 is a circuit diagram of a third embodiment of the storage system of the present invention. [Description of main components] 40 rotor hub fixed pitch servo system 42 rotor blade (root blade) 44 rotor blade (extender blade) 22 201036302 46 Turbine spindle rod 48 Gearbox and permanent magnet generator 50 Block 50 Converter control board 50 Generator rectifier, inverter unit and line filter 52 Shims fixed Converter " 53 AC Power 54 Turbine Speed 0 ι 55 DC Power Supply and Backup Power 56 Axle Speed 57 DC Input 58 Sensor input 58 External sensor 59 AC power supply 60 Turbine control unit 〇 62 Generator control unit 64 SCADA system (interface) 68 Blade extension control unit 70 Blade pitch command 72 Blade extension command 74 A piece of drive signal bus D Bu D2 Diode C1-C24 Supercapacitor PWRl, PWR2 Power Supply 23

Claims (1)

201036302 VII. Patent application scope: ^: Body, control system, which includes a plurality of control units, t source, the 嶋:: has a system (four) flow current division ^ 〃, has - backup power, which includes: - electricity ^ by AC (AC) The power supply provides power and supplies the entire power supply demand for the source of the control unit to the =^ is powered by the AC power supply and supplies the DC power demand; the power supply is the complete power supply and power of the control unit Each of the storage _ is the entire power source consumed by the control unit; and the I-:3 connection is located between the super capacitor storage and the first power source and the second power source. 2. If you apply for the control described in item 1 of the Patent Park, the connection is a gate or a diode. The control system of any one of the preceding claims, wherein the control unit is a control system as described in any one of the preceding claims. Generator control unit or a thirst turbine control unit. 24