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公开(公告)号：US07362069B2
公开(公告)日：2008-04-22
申请号：US10568709
申请日：2004-07-30
IPC分类号： G05B11/28
CPC分类号： H02M7/53873 , H02M7/5395 , H02P27/08
摘要： A simple and accurate dead time dispersion measurement method and a voltage source inverter control method that can prevent the occurrence of an unstable phenomenon are provided.The control method controls a voltage source inverter of a PWM system, which includes a power semiconductor device controlling a level of a voltage, a frequency and a phase. According to the control method, before operation, voltage error information for each polarity of respective phase currents of the inverter is stored. And during the operation, the voltage error information is read to compensate for a voltage instruction value or a pulse width of a PWM instruction signal, so that a voltage error can be corrected.
摘要翻译： 提供了能够防止发生不稳定现象的简单且准确的死区时间色散测量方法和电压源逆变器控制方法。 控制方法控制PWM系统的电压源逆变器，其包括控制电压，频率和相位的功率半导体器件。 根据控制方法，在运行之前，存储逆变器各相电流的各极性的电压误差信息。 并且在操作期间，读取电压误差信息以补偿PWM指令信号的电压指令值或脉冲宽度，从而可以校正电压误差。
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公开(公告)号：US20070030705A1
公开(公告)日：2007-02-08
申请号：US10568709
申请日：2004-07-30
IPC分类号： H02M1/12
CPC分类号： H02M7/53873 , H02M7/5395 , H02P27/08
摘要： A simple and accurate dead time dispersion measurement method and a voltage source inverter control method that can prevent the occurrence of an unstable phenomenon are provided. The control method controls a voltage source inverter of a PWM system, which includes a power semiconductor device controlling a level of a voltage, a frequency and a phase. According to the control method, before operation, voltage error information for each polarity of respective phase currents of the inverter is stored. And during the operation, the voltage error information is read to compensate for a voltage instruction value or a pulse width of a PWM instruction signal, so that a voltage error can be corrected.
摘要翻译： 提供了能够防止发生不稳定现象的简单且准确的死区时间色散测量方法和电压源逆变器控制方法。 控制方法控制PWM系统的电压源逆变器，其包括控制电压，频率和相位的功率半导体器件。 根据控制方法，在运行之前，存储逆变器各相电流的各极性的电压误差信息。 并且在操作期间，读取电压误差信息以补偿PWM指令信号的电压指令值或脉冲宽度，从而可以校正电压误差。
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公开(公告)号：US08348020B2
公开(公告)日：2013-01-08
申请号：US12877110
申请日：2010-09-08
申请人： Hiroaki Ohya , Masashiro Tanaka , Yoichi Yamamoto
发明人： Hiroaki Ohya , Masashiro Tanaka , Yoichi Yamamoto
IPC分类号： B66B1/06
摘要： An elevator control device includes a vector controller that calculates a voltage command required for driving an elevator cage, a carrier frequency switch circuit that outputs a carrier frequency signal, and a power converter that performs PWM control based on the voltage command and the carrier frequency signal, generates an AC power and supplies the AC power to an AC motor. The carrier frequency switch circuit changes the carrier frequency signal when a torque command for driving the AC motor reaches a torque limit value. Thus, it is possible to continuously operate an elevator without causing damage to a switching element of the power converter.
摘要翻译： 电梯控制装置包括矢量控制器，其计算用于驱动电梯轿厢所需的电压指令，输出载波频率信号的载波频率开关电路和基于电压指令和载波频率信号执行PWM控制的功率转换器 产生交流电源，并向交流电动机提供交流电源。 当用于驱动交流电动机的转矩指令达到转矩限制值时，载波频率开关电路改变载波频率信号。 因此，可以连续地操作电梯而不会损坏电力转换器的开关元件。
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