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    • 1. 发明公开
    • EP0604585A4 -
    • EP0604585A4 - Google专利
    • EP0604585A4
    • 1994-08-31
    • EP92921017
    • 1992-09-17
    • U.S. WINDPOWER, INC.
    • HOLLEY, WILLIAM, E.
    • H02P9/00F03D7/02F03D7/04H02P9/04
    • F03D7/028F03D7/0224F03D7/0276F03D7/042F03D7/043F05B2260/821F05B2270/101F05B2270/1032F05B2270/20F05B2270/32F05B2270/329F05B2270/335H02P9/04H02P2101/15Y02A30/12Y02E10/723
    • A controller and method is disclosed for operating a variable speed turbine to better track wind speed fluctuations for greater efficiency in conversion of wind energy to electrical energy. The controller of the invention controls the rotor speed in accordance with a wind speed supplied by a wind observer in order to approximately follow the varying wind speeds. The wind observer predicts the average wind speed at a subsequent point in time over the cross-section presented to the wind by the wind turbine. The average wind speed is applied to a parameter schedule to determine desired values for rotor speed and torque which are used by arotor speed stabilizer to command a reference load torque. The load torque of the generator is controlled in accordance with the commanded load torque, and therefore the desired rotor speed is approximated. During operation, the wind speed prediction process is repeated at each subsequent time interval, and the load torque, and therefore rotor speed, is controlled accordingly. The wind observer calculates the aerodynamic torque and then calculates net torque. The wind speed is predicted as a function of the present (previously predicted) wind speed and correction terms including net torque and the difference between the predicted and actual rotor speed. The wind observer is useful whenever the wind turbine rotor is turning, whether or not it is producing power.
    • 公开了用于跟踪风速波动以获得更高效率的变速涡轮机(10)的控制器(30)和方法。 控制器(30)根据由风力观测器(40)提供的风速来控制转子(22)的速度,以便近似变化的风速。 风力观测器(40)预测横截面上的随后时间点的平均风速。 数据被应用于确定期望的转子(22)值的参数调度(42)。 在接近理想转子速度的位置控制负载转矩。 在随后的每个时间间隔重复风速预测以控制负载转矩和转子速度。 计算气动扭矩和净扭矩。 风速预测基于(先前预测的)风速和包括净转矩的修正项以及预测转速和实际转子转速之间的差值。
    • 2. 发明公开
    • EP0551450A4 -
    • EP0551450A4 - Google专利
    • EP0551450A4
    • 1994-01-12
    • EP92907754
    • 1992-02-21
    • U.S. WINDPOWER, INC.
    • RICHARDSON, ROBERT, D.ERDMAN, WILLIAM, L.
    • H02M5/458H02P21/00H02P21/06H02P21/14H02P23/00H02P23/06H02P23/14H02P27/06H02P5/40
    • H02P27/06H02M5/4585H02P21/06H02P21/20H02P23/06H02P23/14H02P23/30H02P2207/01
    • A motor control apparatus (10) and method is disclosed for controlling a multiphase AC motor (12) by controlling electrical quantities such as voltage or current applied to the stator of the motor (12). The apparatus includes a motor command unit (22) for defining a reference signal indicative of the desired motor parameter such as torque, speed, or position, a DC voltage link (18) including a device for storing energy (20), a line-side converter (16) including active switches (44) in a bridge configuration (42) for controlling the bidirectional flow of electrical power between the DC voltage link (18) and the source of AC power, and a motor-side converter (14) including active switches (26) in a bridge configuration (24) for controlling stator electrical quantities by controlling the bidirectional flow of electrical power between the DC voltage link (18) and the motor (12), where the motor-side converter (14) includes a controller (36) responsive to the reference signal for controlling the active switches (26) to produce stator electrical quantities that correspond to the reference signal.
    • 公开了一种用于通过控制施加到电动机(12)的定子的电压或电流等电量来控制多相AC电动机(12)的电动机控制设备(10)和方法。 该设备包括用于定义表示诸如转矩,速度或位置的期望电动机参数的参考信号的电动机指令单元(22),包括用于存储能量的装置(20)的直流电压链路(18) 包括用于控制DC电压链路(18)和AC电源之间的电力双向流动的电桥配置(42)中的有源开关(44)的电源侧转换器(16)以及电动机侧转换器(14) 包括桥式配置(24)中的有源开关(26),用于通过控制DC电压链路(18)与电动机(12)之间的电力的双向流动来控制定子电量,其中电动机侧转换器(14) 包括响应参考信号的控制器(36),用于控制有源开关(26)以产生对应于参考信号的定子电量。
    • 7. 发明公开
    • SPEED CONTROL SYSTEM FOR A VARIABLE SPEED WIND TURBINE
    • 变速风力发电机组的速度控制系统
    • EP0604585A1
    • 1994-07-06
    • EP92921017.0
    • 1992-09-17
    • U.S. WINDPOWER, INC.
    • HOLLEY, William, E.
    • H02P9F03D7
    • F03D7/028F03D7/0224F03D7/0276F03D7/042F03D7/043F05B2260/821F05B2270/101F05B2270/1032F05B2270/20F05B2270/32F05B2270/329F05B2270/335H02P9/04H02P2101/15Y02A30/12Y02E10/723
    • A controller and method is disclosed for operating a variable speed turbine to better track wind speed fluctuations for greater efficiency in conversion of wind energy to electrical energy. The controller of the invention controls the rotor speed in accordance with a wind speed supplied by a wind observer in order to approximately follow the varying wind speeds. The wind observer predicts the average wind speed at a subsequent point in time over the cross-section presented to the wind by the wind turbine. The average wind speed is applied to a parameter schedule to determine desired values for rotor speed and torque which are used by arotor speed stabilizer to command a reference load torque. The load torque of the generator is controlled in accordance with the commanded load torque, and therefore the desired rotor speed is approximated. During operation, the wind speed prediction process is repeated at each subsequent time interval, and the load torque, and therefore rotor speed, is controlled accordingly. The wind observer calculates the aerodynamic torque and then calculates net torque. The wind speed is predicted as a function of the present (previously predicted) wind speed and correction terms including net torque and the difference between the predicted and actual rotor speed. The wind observer is useful whenever the wind turbine rotor is turning, whether or not it is producing power.
    • 控制单元(30)和变速涡轮机方法(10)用于跟踪风速波动以获得更高的效率。 控制单元(30)基于由风观测装置(40)发送的风速来控制转子(22)的速度以接近可变风速。 风观测装置(40)预测相对于叶片掠过区域在稍后的时间点的平均风速。 数据被应用于确定转子(22)的期望值的参数程序(42)。 负载转矩在转子速度达到所需速度时进行调节。 为了调节负载转矩和转子速度,在每个随后的时间间隔进行新的时间预测速率。 计算空气动力扭矩和净扭矩。 风速的预测基于风速(之前预测的)和校正值,其中净转矩和预测速度与有效转子速度之间的差值。
    • 8. 发明公开
    • FOUR QUADRANT MOTOR CONTROLLER
    • 四路电机控制器
    • EP0551450A1
    • 1993-07-21
    • EP92907754.0
    • 1992-02-21
    • U.S. WINDPOWER, INC.
    • RICHARDSON, Robert, D.ERDMAN, William, L.
    • H02M5H02P21H02P23H02P27
    • H02P27/06H02M5/4585H02P21/06H02P21/20H02P23/06H02P23/14H02P23/30H02P2207/01
    • Appareil (10) et procédé de commande de moteur utilisé pour commander un moteur à courant alternatif multiphase (12) par régulation des quantités électriques tel que la tension ou le courant appliqué au stator du moteur (12). L'appareil comprend une unité de commande (22) de moteur destinée à définir un signal de référence indiquant le paramètre voulu du moteur tels que le couple de rotation, le régime ou la position, une liaison de tension de courant continu (18) comprenant un dispositif de stockage d'énergie (20), un convertisseur (16) du côté de l'alimentation comprenant des commutateurs actifs (44) en configuration de pont (42) destinés à commander le flux bidirectionnel de puissance électrique entre la liaison de tension de courant continu (18) et la source de puissance de courant alternatif, ainsi qu'un convertisseur (14) situé du côté moteur comprenant des commutateurs actifs (26) en configuration en pont (24) destinés à commander les quantités électriques du stator par régulation du flux bidirectionnel de puissance électrique entre la liaison de tension de courant continu (18) et le moteur (12). Le convertisseur (14) situé du côté du moteur comprend une unité de commande (36) réagissant au signal de référence pour commander les commutateurs actifs (26) afin de produire des quantités électriques du stator correspondant au signal de référence.
    • 通过调节施加到电动机(12)的定子的电压或电流等电量来控制多相AC电动机(12)的装置(10)和电动机控制方法。 该设备包括用于定义指示诸如旋转转矩,速度或位置的期望电动机参数的参考信号的电动机控制单元(22),DC电压链路(18),其包括 能量存储装置(20),包括有源桥式开关(44)的功率侧转换器(16),所述有源桥式开关用于控制所述电压链路 直流电源(18)和交流电源,以及包括有源电桥开关(26)的电动机侧转换器(14),所述有源电桥开关用于通过以下方式控制定子的电气量: 调节直流电压链路(18)和电动机(12)之间的电力的双向流动。 电动机侧转换器(14)包括响应于参考信号的控制单元(36),用于控制有源开关(26)以产生与参考信号相对应的定子的电气量。
    • 9. 发明公开
    • LOW IMPEDANCE BUS FOR POWER ELECTRONICS
    • BUS BAR电力电子具有低阻抗。
    • EP0593637A1
    • 1994-04-27
    • EP92915428.0
    • 1992-07-09
    • U.S. WINDPOWER, INC.
    • DEAM, David, R.ERDMAN, William, L.
    • H01L23H01L25H02G5H02M7
    • H01L25/115H01L23/52H01L2924/0002H01L2924/3011H02M7/003H01L2924/00
    • A low impedance, high power bus for conduction of electrical power with reduced transient signal effects is described herein. The high power bus can be applied as a high power supply bus between a constant voltage source and a plurality of switching cells positioning at varying locations along the bus, and as branch bus for the switching cells. The power bus can transmit high power: large currents in the hundreds or thousands of amperes, and large voltage potentials in the hundreds or thousands of volts. Particularly, the power bus has use in a DC-to-AC inverter that converts DC from a constant voltage source into three-phase AC for delivery to an electrical power grid. The high power bus includes two conductive bars positioned so that the current flow therethrough is balanced (equal and opposing), and the magnetic field is substantially confined between the bars. The bus includes a dielectric positioned between the conductive bars. In a preferred embodiment, the AC is conducted on extension bars that extend along the power supply bus, so that a main bus is created by the combination of the AC extension bars and the DC power supply bus, and the sum of the currents in the bars is approximately zero at all locations in the bus. The power bus lessens or even obviates the need for the snubber networks commonly used to reduce transients, and reduces the strength of magnetic fields and electric fields that could otherwise interfere with neighboring electrical components.