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    • 51. 发明授权
    • Method for controlling a power converter in a wind turbine generator
    • 用于控制风力涡轮发电机中的功率转换器的方法
    • US09252601B2
    • 2016-02-02
    • US13498109
    • 2010-09-20
    • Yin BoHeng DengKim B. LarsenLars HelleMogens Lau
    • Yin BoHeng DengKim B. LarsenLars HelleMogens Lau
    • H02M5/42H02J3/38
    • H02J3/386Y02E10/763
    • A method for controlling a power converter in a wind turbine generator, the power converter being connected to a power grid, the method comprising obtaining an alternating current (AC) line voltage at a connection point between the power converter and the power grid, obtaining a frequency of the power grid based on the AC line voltage, dynamically adapting the AC line voltage to the frequency of the power grid, generating a reference signal based on at least the frequency-adapted AC line voltage, and determining a converter control signal to be provided to the power converter based on the reference signal and the grid frequency in order to generate a power at the frequency of the power grid. Further, a wind turbine generator implementing the method is provided.
    • 一种用于控制风力涡轮发电机中的功率转换器的方法,所述功率转换器连接到电网,所述方法包括在所述功率转换器和所述电网之间的连接点处获得交流(AC)线路电压,获得 根据交流线路电压对电力网的频率进行动态调整,将交流线路电压动态地调整到电力网的频率,至少基于频率适配的交流线路电压产生参考信号,并且确定转换器控制信号为 基于参考信号和电网频率提供给功率转换器,以便产生电力频率的功率。 此外,提供了实现该方法的风力涡轮发电机。
    • 54. 发明授权
    • Even-level inverter
    • 偶数级逆变器
    • US09042137B2
    • 2015-05-26
    • US13364001
    • 2012-02-01
    • Min Ho HeoTae Hoon KimSung Jun ParkDoo Young SongTae Won Lee
    • Min Ho HeoTae Hoon KimSung Jun ParkDoo Young SongTae Won Lee
    • H02H7/122H02M5/42H02M7/68H02M7/5387H02M7/483H02M1/00
    • H02M7/483H02M2001/0074
    • There is provided an even-level inverter, including: a voltage-dividing circuit dividing input DC power into an even number of voltage levels; a plurality of switching devices connected to individual nodes of the voltage-dividing circuit having the even number of voltage levels; and a bidirectional switching device connected to the individual nodes of the voltage-dividing circuit through at least one of the plurality of switching devices and including at least two transistors. According to the present invention, the bidirectional switching device is implemented without a diode to thereby reduce conduction loss caused due to an anti-parallel diode included in the related art bidirectional switching device, and a neutral point of the voltage-dividing circuit is electrically separated from the switching devices to thereby control reactive power.
    • 提供了一种均衡电平逆变器,包括:分压电路将输入的直流电力分成偶数个电压电平; 连接到具有偶数个电压电平的分压电路的各个节点的多个开关装置; 以及通过所述多个开关装置中的至少一个连接到所述分压电路的各个节点并且包括至少两个晶体管的双向开关装置。 根据本发明,双向开关器件实现为没有二极管,从而减少由现有技术的双向开关器件中包括的反并联二极管引起的导通损耗,并且分压电路的中性点被电分离 从开关装置控制无功功率。
    • 57. 发明申请
    • POWER CONVERTER CONTROL METHOD
    • 电力变换器控制方法
    • US20140233276A1
    • 2014-08-21
    • US14347128
    • 2012-09-14
    • Takayuki Fujita
    • Takayuki Fujita
    • H02M5/42
    • H02M1/12H02M5/22H02M5/297H02M5/4505H02M5/4585
    • When an AC voltage is outputted to an inductive load, pulsation of an effective power caused by an odd number-th order harmonic component of a current flowing in this load is reduced. A modulation factor k of an inverter 4 includes a DC component k0 and an AC component. The AC component includes a frequency which is a 6n multiple of the fundamental frequency of AC voltages outputted from the inverter. Even when there are not only the 5th order harmonic component of load currents but also the 7th order harmonic component, it is possible to adequately set the ratio of the magnitude of the AC component and the ratio of the DC component and reduce pulsation of consumption power caused by these harmonic components. Reducing the pulsation contributes to suppression of power harmonics.
    • 当将交流电压输出到感性负载时,由在该负载中流动的电流的奇数次谐波分量引起的有效功率的脉动减小。 逆变器4的调制系数k包括DC分量k0和AC分量。 AC分量包括从逆变器输出的AC电压的基频的6n倍的频率。 即使不仅具有负载电流的5次谐波分量,而且还具有7次谐波分量,则可以适当地设定交流分量的大小与直流成分的比例,并减少消耗功率的脉动 由这些谐波分量引起。 降低脉动有助于抑制功率谐波。
    • 59. 发明申请
    • CONTACTLESS INDUCTIVELY COUPLED POWER TRANSFER SYSTEM
    • 无连接电感耦合功率传输系统
    • US20140092649A1
    • 2014-04-03
    • US14029372
    • 2013-09-17
    • PowerWow Technology Inc.
    • Jr-Uei Hsu
    • H01F38/14H02M5/42
    • H02M5/42H01F38/14H02J5/005H02J50/12H02J50/40
    • A contactless inductively coupled power transfer system includes a power supply device and a power receiving device. The power supply device includes a primary winding for generating an electromagnetic field (EMF) in response to an AC current flow having an operating frequency. The power receiving device includes a resonant circuit outputting an output voltage to a load and including a secondary winding and a reactance element. The reactance element is capable of forming a parallel resonant LC circuit with the secondary winding that resonates at the operating frequency, and forming a series resonant LC circuit that resonates at the operating frequency, and that is to be connected in series to the load.
    • 无接触感应耦合的电力传输系统包括电源装置和电力接收装置。 电源装置包括用于响应于具有工作频率的AC电流产生电磁场(EMF)的初级绕组。 电力接收装置包括向负载输出输出电压并包括次级绕组和电抗元件的谐振电路。 电抗元件能够与工作频率谐振的次级绕组形成并联谐振LC电路,并且形成串联谐振LC电路,其以工作频率谐振并且串联连接到负载。