Power conversion apparatus
    1.
    发明授权
    Power conversion apparatus 失效
    电力转换装置

    公开(公告)号:US5991181A

    公开(公告)日:1999-11-23

    申请号:US54405

    申请日:1998-04-03

    CPC分类号: H02J1/102 H02J3/46

    摘要: A power conversion apparatus has a voltage type power convertor, a power control circuit for outputting a first active power reference signal for the voltage type power convertor based on a power reference value Pref and a detection value P of a power detector, a DC voltage detector for outputting a second active power reference signal for the voltage type power convertor based on a DC voltage reference value Vdref and a detection value Vd of the DC voltage detector, and a gate control circuit for firing switching elements in the voltage type power convertor based on both first and second active power reference signals.

    摘要翻译: 电力转换装置具有电压型功率转换器,功率控制电路,用于基于功率检测器的功率检测器,直流电压检测器的功率基准值Pref和检测值P输出用于电压型功率转换器的第一有功功率参考信号 用于基于直流电压参考值Vdref和直流电压检测器的检测值Vd输出用于电压型功率转换器的第二有功功率参考信号,以及用于基于电压型功率转换器的电压型功率转换器的点火开关元件的栅极控制电路 第一和第二有功功率参考信号。

    Apparatus for detecting the amplitude and phase of an a.c. signal
    3.
    发明授权
    Apparatus for detecting the amplitude and phase of an a.c. signal 失效
    用于检测交流电压的幅度和相位的装置 信号

    公开(公告)号:US5808462A

    公开(公告)日:1998-09-15

    申请号:US752316

    申请日:1996-11-19

    摘要: An apparatus for detecting the amplitude and phase of an a.c. signal. The apparatus includes a signal detection circuit for detecting the a.c. signal, a signal splitting circuit for splitting the detected a.c. signal into first and second a.c. signals out of phase with each other by 90.degree.. The signal splitting circuit includes a first order lag circuit having a phase lag, a subtractor, and first and second amplifying circuits. The apparatus also includes a phase compensation circuit coupled to the signal splitting circuit for receiving the first and second a.c. signals from the signal splitting circuit and for advancing the phase of an output signal of the apparatus by the phase lag of the first order lag circuit. The phase compensation circuit also includes an amplitude and phase detection circuit for detecting the amplitude and phase of the detected a.c. signal by implementing a polar coordinate transformation of the first and second a.c. signals received from the signal splitting circuit.

    摘要翻译: 一种用于检测直流电压的振幅和相位的装置。 信号。 该装置包括用于检测直流电压的信号检测电路。 信号,用于分离检测到的交流电平的信号分离电路。 信号进入第一和第二个a.c. 信号异相90度。 信号分离电路包括具有相位滞后的第一级滞后电路,减法器以及第一和第二放大电路。 该装置还包括耦合到信号分离电路的相位补偿电路,用于接收第一和第二直流 来自信号分离电路的信号,并且用于使装置的输出信号的相位提前一阶滞后电路的相位滞后。 相位补偿电路还包括一个幅度和相位检测电路,用于检测检测到的交流电的幅度和相位。 通过实施第一和第二等角的极坐标变换来发出信号。 从信号分离电路接收的信号。

    Apparatus for detecting the amplitude and phase of an A.C. signal
    5.
    发明授权
    Apparatus for detecting the amplitude and phase of an A.C. signal 失效
    用于检测交流信号的振幅和相位的装置

    公开(公告)号:US5714877A

    公开(公告)日:1998-02-03

    申请号:US754504

    申请日:1996-11-19

    摘要: An apparatus for detecting the amplitude and phase of an a.c. signal. The apparatus includes a signal detection circuit for detecting the a.c. signal, a signal splitting circuit for splitting the detected a.c. signal into first and second a.c. signals out of phase with each other by 90.degree.. The signal splitting circuit includes a low-pass filter, and a differentiation circuit. The apparatus also includes a phase compensation circuit coupled to the signal splitting circuit for receiving the first and second a.c. signals from the signal splitting circuit and for advancing the phase of an output signal of the apparatus by the phase lag of the low-pass filter. The phase compensation circuit also includes an amplitude and phased detection circuit for detecting the amplitude and phase of the detected a.c. signal by implementing a polar coordinate transformation of the first and second a.c. signals received from the signal splitting circuit.

    摘要翻译: 一种用于检测直流电压的振幅和相位的装置。 信号。 该装置包括用于检测直流电压的信号检测电路。 信号,用于分离检测到的交流电平的信号分离电路。 信号进入第一和第二个a.c. 信号异相90度。 信号分离电路包括低通滤波器和微分电路。 该装置还包括耦合到信号分离电路的相位补偿电路,用于接收第一和第二直流 来自信号分离电路的信号,并且通过低通滤波器的相位差推进装置的输出信号的相位。 相位补偿电路还包括幅度和相位检测电路,用于检测检测到的交流电的幅度和相位。 通过实施第一和第二等角的极坐标变换来发出信号。 从信号分离电路接收的信号。

    SYNCHRONOUS-MACHINE STARTING DEVICE
    8.
    发明申请
    SYNCHRONOUS-MACHINE STARTING DEVICE 有权
    同步起动装置

    公开(公告)号:US20120161688A1

    公开(公告)日:2012-06-28

    申请号:US13391947

    申请日:2009-08-24

    IPC分类号: H02P1/46

    CPC分类号: H02P1/52 H02M5/272 H02P1/46

    摘要: A synchronous-machine starting device includes an electric power conversion unit for converting supplied electric power into AC power for supply to the armature of the synchronous machine, a rotor position detection unit for detecting a position of the rotor of the synchronous machine based on an AC voltage in the armature of the synchronous machine detected by an AC voltage detection unit, an electric power conversion control unit for controlling the electric power conversion unit based on the position of the rotor detected by the rotor position detection unit, and an abnormality detection unit detecting a rotation abnormality of the synchronous machine based on the AC voltage detected by the AC voltage detection unit after supply of the field current to the rotor of the synchronous machine is started.

    摘要翻译: 同步机启动装置包括:电力转换单元,用于将所供电的电力转换成用于供给同步电机的电枢的交流电;转子位置检测单元,用于基于AC检测同步电机的转子的位置; 由交流电压检测单元检测到的同步电机的电枢中的电压;电力转换控制单元,用于基于由转子位置检测单元检测到的转子的位置来控制电力转换单元;以及异常检测单元检测 开始基于在向同步电机的转子提供励磁电流之后由AC电压检测单元检测到的AC电压的同步电机的旋转异常。

    SYNCHRONOUS MACHINE STARTING DEVICE
    9.
    发明申请
    SYNCHRONOUS MACHINE STARTING DEVICE 有权
    同步机起动装置

    公开(公告)号:US20110181220A1

    公开(公告)日:2011-07-28

    申请号:US13122157

    申请日:2008-10-01

    IPC分类号: H02P6/20

    摘要: A synchronous machine starting device includes a power conversion unit for converting supplied power into AC power and supplying the AC power to an armature of a synchronous machine, an AC voltage detection unit for detecting AC voltage supplied to the armature of the synchronous machine, a rotor position detection unit for detecting a rotor position of the synchronous machine, based on the detected AC voltage, and a power conversion control unit for controlling the power conversion portion, based on the detected rotor position. The rotor position detection portion includes a level monitoring unit outputting a first position signal indicating a timing at which a level of AC voltage supplied to the armature of the synchronous machine reaches a prescribed value, based on the detected AC voltage, a feedback operation unit for calculating an error of an estimated phase based on the estimated phase indicating the rotor position and the detected AC voltage, calculating the estimated phase based on the calculated phase error, and outputting a second position signal indicating the calculated estimated phase, and a selector circuit receiving the first position signal or a position signal obtained based on the first position signal, and the second position signal, selecting one of the received two position signals, and outputting the selected signal to the power conversion control unit as a signal indicating the rotor position of the synchronous machine.

    摘要翻译: 同步电机启动装置包括电力转换单元,用于将供电的电力转换为交流电力并将交流电力提供给同步电机的电枢;交流电压检测单元,用于检测供应给同步电机的电枢的交流电压;转子 位置检测单元,用于基于检测到的AC电压来检测同步电机的转子位置;以及功率转换控制单元,用于基于检测到的转子位置来控制电力转换部分。 转子位置检测部包括:电平监视部,基于检测到的交流电压,输出表示提供给同步电机的电枢的交流电压的电平达到规定值的定时的第一位置信号;反馈运算部, 基于表示转子位置和检测出的交流电压的估计相位来计算估计相位的误差,基于计算出的相位误差计算估计相位,并输出表示计算出的推定相位的第二位置信号,以及选择电路接收 所述第一位置信号或基于所述第一位置信号获得的位置信号和所述第二位置信号,选择所接收的两个位置信号中的一个,并将所选择的信号输出到所述功率转换控制单元,作为指示所述第二位置信号的转子位置的信号 同步机。

    Voltage source type power converting apparatus
    10.
    发明授权
    Voltage source type power converting apparatus 失效
    电压型电力转换装置

    公开(公告)号:US5886888A

    公开(公告)日:1999-03-23

    申请号:US638054

    申请日:1996-04-26

    摘要: A voltage source type power converting apparatus having voltage source type power converter units and phase-shifting transformers. The transformers have either a common multiple-phase primary winding or a group of parallel connected multiple-phase primary windings, either of which being connected in parallel or series to a multiple-phase AC system. The transformer further include a group of multiple-phase secondary windings with phase differences with respect to each other and which are connected to voltage source type power converter units. The voltage source type power converter units are operated with the phase differences. Accordingly, the construction of the multiplexing phase-shifting transformer is simple, and fundamental electric variables can be controlled by a simple phase controlling operation. In addition, a higher harmonic defect of the AC system can be reduced, and the DC voltage can be easily raised.

    摘要翻译: 一种具有电压型功率转换器单元和移相变压器的电压型电力转换装置。 变压器具有公共多相初级绕组或一组并联的多相初级绕组,其中任一个并联或串联连接到多相AC系统。 该变压器还包括一组相对于彼此具有相位差并连接到电压源型功率转换器单元的多相次级绕组。 电压源式功率转换器单元以相位差运行。 因此,复用移相变压器的构造简单,可以通过简单的相位控制操作来控制基本的电变量。 此外,可以降低AC系统的高次谐波缺陷,并且可以容易地提高DC电压。