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15 条记录 (耗时 0.041 秒)

    Power converter
    6.
    发明申请
    Power converter 有权
    电源转换器

    公开(公告)号：US20050275386A1

    公开(公告)日：2005-12-15

    申请号：US10518603

    申请日：2003-06-20

    申请人： Aksel Jepsen ,  Nils-Ole Harvest ,  Uffe Borup

    发明人： Aksel Jepsen ,  Nils-Ole Harvest ,  Uffe Borup

    IPC分类号： H02J3/38 ,  H02M7/48 ,  H02K7/18

    CPC分类号： H02J3/383 ,  H02J3/387 ,  H02M7/4807 ,  Y02E10/563 ,  Y10T307/707

    摘要： A power converter for converting energy from a green power unit as e.g. a solar cell into energy fed into the commercial grid is described. The object is to provide a versatile modularized power converter with eased access to control of the power switches. Another object is to improve the electrical efficiency. This is achieved by using an independent controller on a DC/DC module and an independent controller on a DC/AC module, whereby the the two independent controllers communicate with each other and the outside world by means of a communication bus. Further, the DC/DC module of the power converter comprises a transformer which transfers energy from the DC/DC module to the DC/AC module. This design enables independent control of the modules and eases controllability of the power switches in order to suppress retroaction from pulsations generated on the mains when supplying energy to a single phase grid. Hereby the electrical efficiency of the power converter is increased. Also, an active snubber circuit is described which further increase the efficiency.

    摘要翻译： 一种用于转换来自绿色电力单元的能量的电力转换器。 描述了将太阳能电池投入商业电网的能量。 目的是提供一个通用的模块化电源转换器，可轻松访问电源开关的控制。 另一个目的是提高电效率。 这通过在DC / DC模块和DC / AC模块上的独立控制器上使用独立控制器来实现，由此两个独立控制器通过通信总线相互通信和外部世界。 此外，功率转换器的DC / DC模块包括将能量从DC / DC模块传送到DC / AC模块的变压器。 该设计能够独立控制模块并简化功率开关的可控性，以便在向单相电网供电时抑制电源上产生的脉动的逆变。 因此，功率转换器的电效率增加。 而且，描述了进一步提高效率的有源缓冲电路。

    Method and power supply device for generating regulated D.C. voltage from A.C. voltage
    7.
    发明授权
    Method and power supply device for generating regulated D.C. voltage from A.C. voltage 有权
    用于从交流电压产生调节直流电压的方法和电源装置

    公开(公告)号：US06483278B2

    公开(公告)日：2002-11-19

    申请号：US09943256

    申请日：2001-08-30

    申请人： Nils-Ole Harvest

    发明人： Nils-Ole Harvest

    IPC分类号： G05F1613

    CPC分类号： H02M3/158 ,  H02M2001/007

    摘要： A method and power supply device for generating a regulated direct voltage from an alternating voltage using a step-down transformer, a step-up transformer, an inductance coil and a control device that controls the transformer in a step-down or step-up transformation mode is disclosed herein. An inductance coil voltage measuring signal is compared with three limiting values (A, B, C), wherein A corresponds to zero, B lies between A and C and B and C correspond to the direct voltage. Switching from the step-down to the step-up transformation mode is effected when the increasing voltage measuring signal drops after reaching B and A is not reached again and increases to C instead. Switching from step-down to step-up transformation mode is effected when the decreasing voltage measuring signal increases after reaching A and B is not reached and drops to A instead. In the power supply device, the control device includes three comparators for comparing the limiting values (A, B, C) with the voltage measuring signal of a voltage measuring device, wherein at least B anc C are dependent upon regulation deviation.

    摘要翻译： 一种用于使用降压变压器，升压变压器，电感线圈和控制装置从交流电压产生调节的直流电压的方法和电源装置，其在降压或升压转换中控制变压器 模式在此公开。 将电感线圈电压测量信号与三个极限值（A，B，C）进行比较，其中A对应于零，B位于A和C之间，B和C对应于直流电压。 当增加的电压测量信号在达到B之后下降并且A不再次达到并且增加到C时，实现从降压到升压转换模式的切换。 当降低电压测量信号在到达A和B达不到之后增加，并且降低到A时，实现从降压转换到升压转换模式。 在电源装置中，控制装置包括三个比较器，用于将极限值（A，B，C）与电压测量装置的电压测量信号进行比较，其中至少B anc C取决于调节偏差。

    Rotary speed ratio control arrangement
    8.
    发明授权
    Rotary speed ratio control arrangement 失效
    旋转速比控制装置

    公开(公告)号：US4196376A

    公开(公告)日：1980-04-01

    申请号：US904494

    申请日：1978-05-10

    申请人： Nils-Ole Harvest ,  Niels Hasberg ,  Kaj Nielsen

    发明人： Nils-Ole Harvest ,  Niels Hasberg ,  Kaj Nielsen

    IPC分类号： G05D13/62 ,  H02P5/50

    CPC分类号： H02P5/50

    摘要： The invention relates to a control circuit for controlling the speed ratio of a lead motor and a follower motor. The outputs of pulse generators driven by the motors are compared by being fed the positive and negative inputs of a bidirectional counter which outputs a positive or negative value indicative of the sensed speed ratio. A digital/analog converter driven by the counter effectively controls the speed of the follower motor pursuant to the sensed speed ratio.

    摘要翻译： 本发明涉及一种用于控制引线电动机和从动电动机的速比的控制电路。 由电动机驱动的脉冲发生器的输出通过馈送双向计数器的正和负输入进行比较，该双向计数器输出表示感测速度比的正或负值。 由计数器驱动的数字/模拟转换器根据感测的速比有效地控制从动电动机的速度。

    Inverter circuit and a method for controlling same
    9.
    发明授权
    Inverter circuit and a method for controlling same 失效
    逆变器电路及其控制方法

    公开(公告)号：US5093771A

    公开(公告)日：1992-03-03

    申请号：US461826

    申请日：1990-01-08

    申请人： Nils-Ole Harvest

    发明人： Nils-Ole Harvest

    IPC分类号： H02M1/00 ,  H02M1/38

    CPC分类号： H02M1/38

    摘要： An inverter circuit which converts d.c. from a d.c. source to single or multiple phase a.c.. Two semiconductor switching elements for each phase are connected in series between two poles of a d.c. source. A signal generator provides a pulse width modulated signal for operating the switching elements. Blocking elements are provided between the signal generator and the switching elements. A control circuit senses current flow at the a.c. output and selectively enables the blocking elements in accordance with the direction of the current flow to prevent short circuiting between the switching elements.

    摘要翻译： 一个转换直流电路的逆变电路 从d.c. 源至单相或多相a.c。每相的两个半导体开关元件串联连接在直流的两极之间。 资源。 信号发生器提供用于操作开关元件的脉宽调制信号。 阻塞元件设置在信号发生器和开关元件之间。 控制电路感测电流在交流电流。 输出并且根据电流的方向选择性地启用阻塞元件以防止开关元件之间的短路。

    Stabilizing circuit for an inverse rectifier motor control
    10.
    发明授权
    Stabilizing circuit for an inverse rectifier motor control 失效
    逆变整流电机控制稳定电路

    公开(公告)号：US4535280A

    公开(公告)日：1985-08-13

    申请号：US594300

    申请日：1984-03-28

    申请人： Nils-Ole Harvest ,  Anna Melamed

    发明人： Nils-Ole Harvest ,  Anna Melamed

    IPC分类号： H02M5/45 ,  H02M7/525 ,  H02M7/539 ,  H02P27/06 ,  H02P5/40

    CPC分类号： H02P27/06 ,  H02M5/45 ,  H02M7/525 ,  H02M7/539 ,  H02P27/047

    摘要： The invention relates to a stabilizing circuit for an inverse rectifier motor control which includes a D.C. voltage supply having a D.C. voltage regulator followed by a smoothing intermediate circuit. A frequency control circuit converts the supply voltage from the intermediate circuit to a frequency control voltage. Following the frequency control circuit is a generator for converting the frequency control voltage to control signals for the inverse rectifier motor control.

    摘要翻译： 本发明涉及一种用于逆整流电动机控制的稳定电路，其包括具有直流电压调节器的直流电压源，随后是平滑中间电路。 频率控制电路将来自中间电路的电源电压转换成频率控制电压。 跟随频率控制电路是用于将频率控制电压转换成用于逆整流电机控制的控制信号的发生器。