会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 5. 发明申请
    • SYSTEM AND METHOD FOR FAST START-UP OF AN INDUCTION MOTOR
    • 用于电动机快速启动的系统和方法
    • WO2012142008A2
    • 2012-10-18
    • PCT/US2012032841
    • 2012-04-10
    • EATON CORPYU ANBOZHANG LEILEE KEVIN
    • YU ANBOZHANG LEILEE KEVIN
    • H02P1/30
    • H02P1/28H02P29/032
    • A system for controlling operation of a motor drive during fast start-up of an induction motor includes an AC motor drive having a PWM inverter and a control system to generate a command signal to cause the PWM inverter to control an output of the AC motor drive. The control system includes a start-up modulator that is selectively operable during start-up acceleration of the AC motor, the start-up modulator programmed to determine a motor current applied to the AC motor and a voltage of a DC bus, generate a first frequency offset that causes a frequency reference of the command signal to be decreased when the motor current is greater than a reference current threshold, and generate a second frequency offset that causes the frequency reference of the command signal to be increased when the DC bus voltage is greater than a reference voltage threshold.
    • 一种用于在感应电动机的快速启动期间控制电动机驱动器的操作的系统包括具有PWM逆变器的AC电动机驱动器和用于产生指令信号以使PWM逆变器控制AC电动机驱动器的输出的控制系统 。 控制系统包括启动调制器,其可在AC电动机的启动加速期间选择性地工作,所述启动调制器被编程以确定施加到AC电动机的电动机电流和DC总线的电压,产生第一 当电动机电流大于参考电流阈值时,导致指令信号的频率参考值减小的频率偏移,并且产生第二频率偏移,当DC总线电压为DC时,使得命令信号的频率参考值增加 大于参考电压阈值。
    • 6. 发明申请
    • CLOSED LOOP CONTROL OF A CYCLO-CONVERTER
    • 闭环转换器的闭环控制
    • WO2012002824A2
    • 2012-01-05
    • PCT/NZ2011000108
    • 2011-06-15
    • EATON IND COHARRISON MICHAEL JOHNLEE KEVINKOTULA TOMASZFAMILIANT YAKOV
    • HARRISON MICHAEL JOHNLEE KEVINKOTULA TOMASZFAMILIANT YAKOV
    • H02M7/72H02M1/4258H02M5/271Y02B70/126
    • A three-phase resonant cyclo-converter including a closed loop control module for controlling the switching frequency of the cyclo-converter, the closed loop control module including: a voltage signal development module arranged to develop a voltage signal representative of a voltage output waveform of the cyclo-converter, a storage module arranged to accumulate voltage signal values for phase portions of the voltage output waveform, where the voltage signal values are based on a voltage error signal and accumulated historical voltage signal values for the same corresponding phase portions, and a switching frequency control module arranged to develop a switching frequency control signal to control the switching frequency of the cyclo-converter based on the accumulated voltage signal values for corresponding phase portions of the voltage output waveform, and a proportional voltage signal based on a difference between the developed voltage signal and a reference voltage signal.
    • 一种三相谐振循环转换器,包括一个用于控制该循环转换器的开关频率的闭环控制模块,该闭环控制模块包括:一个电压信号开发模块,用于产生代表一个电压输出波形的电压信号 循环转换器,存储模块,其被布置成对电压输出波形的相位部分累积电压信号值,其中电压信号值基于电压误差信号和相同对应相位部分的累积历史电压信号值,以及 开关频率控制模块,其被布置成基于所述电压输出波形的相应相位部分的累积电压信号值来开发开关频率控制信号以控制所述循环转换器的开关频率;以及基于所述电压输出波形之间的差的比例电压信号 开发出电压信号和参考电压信号。