公开(公告)号：US4369492A

公开(公告)日：1983-01-18

申请号：US244123

申请日：1981-03-16

Applicant: Klaus Moll ,  Helmut Schulze

Inventor： Klaus Moll ,  Helmut Schulze

IPC: H02H7/122 ,  H02H7/127

CPC classification number: H02H7/127 ,  H02H7/1225

Abstract: The converter protection device has a number of controlled semiconductor elements. A control unit is connected to the semiconductor elements of the converter for forming firing pulses for the controlled semiconductor elements. Reference blocking intervals for the semiconductor elements are set and actual blocking intervals of the semiconductor elements are set and controlled. A comparator receives and compares the reference and actual blocking intervals. There are also provided a read-only memory for storing the reference blocking intervals, an event counter for counting disturbances detected by comparison of the reference and actual blocking intervals, a memory stage being connected to the event counter and being set if the event counter reaches a predetermined count, and a time-base device connected to the event counter and memory stage for resetting the event counter if the memory stage is not set at the end of a predetermined base time.

Abstract translation: 转换器保护装置具有多个受控的半导体元件。 控制单元连接到用于形成用于受控半导体元件的点火脉冲的转换器的半导体元件。 设置用于半导体元件的参考阻挡间隔，并且设置和控制半导体元件的实际阻挡间隔。 比较器接收并比较参考和实际阻塞间隔。 还提供了用于存储参考阻塞间隔的只读存储器，用于对参考和实际阻塞间隔进行比较而检测到的扰动进行计数的事件计数器，连接到事件计数器的存储器级，如果事件计数器到达则被设置 如果在预定基准时间结束时没有设置存储器级，则连接到事件计数器和存储器级的时基设备用于复位事件计数器。

公开(公告)号：US4263542A

公开(公告)日：1981-04-21

申请号：US963990

申请日：1978-11-27

Applicant: Helmut Schulze ,  Klaus Moll

Inventor： Helmut Schulze ,  Klaus Moll

IPC: H02P23/08 ,  H02P5/40

CPC classification number: H02P23/08

Abstract: Method for controlling the speed and torque of an asynchronous machine fed through a static frequency changer with impressed intermediate current link, a control variable for the frequency of the current delivered by the frequency changer being formed from an electrical variable corresponding to a slip frequency value and an electrical variable corresponding to actual value of a frequency proportional to the rotor speed of the asynchronous machine which includes operating the asynchronous machine with constant flux in a region of constant maximal torque, and adjusting the flux in the machine, in a region of constant maximal power, as a function both of voltage at commutating capacitors of a self-commutating inverter and of a respective load condition of the asynchronous machine.

Abstract translation: 用于控制通过具有外加中间电流链路的静态变频器馈送的异步电机的速度和转矩的方法，由变频器传送的电流的频率的控制变量由对应于转差频率值的电变量形成，以及 对应于与异步电机的转子转速成比例的频率的实际值的电变量，其包括在恒定最大扭矩的区域中操作具有恒定通量的异步电机，并且在恒定最大值的区域中调节机器中的通量 电力，作为自换向变换器的换向电容器的电压以及异步电机的相应负载条件的功能。