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1. 发明申请

US20050146306A1 Sensorless controller of ac motor and control method 有权
标题翻译：交流电机无传感器控制器及控制方法
公开(公告)号：US20050146306A1
公开(公告)日：2005-07-07
申请号：US10509957
申请日：2003-03-26
申请人： Jung-ik Ha , Kozo Ide
发明人： Jung-ik Ha , Kozo Ide
IPC分类号： H02P29/00 , H02P6/18 , H02P21/00 , H02P21/04 , H02P21/14 , H02P27/04 , H02P5/28
CPC分类号： H02P21/141 , H02P6/183 , H02P21/04
摘要： It is an object of the invention to provide a sensorless control apparatus of an AC motor which can carry out a stable control within all driving ranges including a region having a zero speed and a zero output frequency. The invention includes a high frequency generator (110) for superposing a high frequency signal on an estimated magnetic flux axis, a high frequency component extractor (130) for extracting an error signal of a magnetic flux position from a voltage or current detection signal having the same frequency component as a frequency component of the high frequency signal, a magnetic flux observer (120) for estimating a magnitude and a position of a magnetic flux, a first adaptive regulator for adaptively regulating an error signal on a high frequency superposing side, a second adaptive regulator for adaptively regulating an error signal on a magnetic flux observer side, a hybrid device (140) for switching the first adaptive regulator at a very low speed, the first and second adaptive regulators at a low speed and the second adaptive regulator at a high speed depending on the speed, and a speed estimator (150) for estimating a speed from an output of the hybrid device.
摘要翻译：本发明的一个目的是提供一种能够在包括零速度和零输出频率的区域的所有驱动范围内执行稳定控制的交流电动机的无传感器控制装置。本发明包括用于在估计的磁通轴上叠加高频信号的高频发生器（110），用于从具有该频率信号的电压或电流检测信号中提取磁通位置的误差信号的高频分量提取器（130）与高频信号的频率分量相同的频率分量，用于估计磁通量的大小和位置的磁通量观测器（120），用于自适应地调节高频叠加侧的误差信号的第一自适应调节器，用于自适应地调节磁通观测器侧的误差信号的第二自适应调节器，用于以非常低的速度切换第一自适应调节器的混合设备（140），第一和第二自适应调节器以低速度切换，第二自适应调节器根据速度的高速，以及用于从混合装置的输出估计速度的速度估计器（150）。

2. 发明授权

US5886498A Sensorless field orientation control method of an induction machine by high frequency signal injection 失效
标题翻译：感应电机通过高频信号注入的无传感器场定向控制方法
公开(公告)号：US5886498A
公开(公告)日：1999-03-23
申请号：US921658
申请日：1997-08-28
申请人： Seung-ki Sul , Jung-ik Ha
发明人： Seung-ki Sul , Jung-ik Ha
IPC分类号： H02P21/00 , H02P21/14 , H02P1/34
CPC分类号： H02P21/141
摘要： The present invention is related to the method to find the rotor flux angle from stator voltages and currents by injecting high frequency signal. The injected signal is not rotating one but fluctuating one at a reference frame rotating synchronously to the fundamental stator frequency. The difference of impedances between the flux axis and the quadrature axis at high frequency signal injected on the rotor flux angle is explained by the equivalent circuit equation of the induction machine. The difference is verified by experiments on the test motors at various conditions. The sensorless field orientation control method is proposed and experimental results clarify the satisfactory operation of the method with 150% load torque at zero stator frequency.
摘要翻译：本发明涉及通过注入高频信号从定子电压和电流中找到转子磁通角的方法。注入信号不是旋转一个，而是在与基本定子频率同步旋转的参考系上波动。通过感应电机的等效电路方程来解释注入到转子磁通角上的高频信号处的磁通轴和正交轴之间的阻抗差。通过在各种条件下对试验电机的实验来验证差异。提出了无传感器场方向控制方法，实验结果明确了零定子频率下150％负载转矩方法的令人满意的运行。

3. 发明授权

US06639380B2 Method and system of sensorless field orientation control for an AC motor 有权
标题翻译：交流电机无传感器场定向控制方法及系统
公开(公告)号：US06639380B2
公开(公告)日：2003-10-28
申请号：US10115358
申请日：2002-04-03
申请人： Seung-ki Sul , Jung-ik Ha
发明人： Seung-ki Sul , Jung-ik Ha
IPC分类号： H02P124
CPC分类号： H02P21/18 , H02P21/24
摘要： A field orientation control method for an AC motor, which includes assuming an arbitrary axis as an estimated control axis in the synchronously rotating reference frame; injecting a high-frequency fluctuating signal to the estimated control axis; determining the position of a control axis using current, voltage or impedance on the estimated control axis in the synchronously rotating reference frame, generated by the injected high-frequency signal; and determining the position and speed of the rotor based on the control axis thus located. Since this method uses the variation of impedance caused by the induction machine's generation of field and by various shapes, the control performance is more stable than other conventional control methods. This AC motor's control method may be applied to control of torque, speed and position at a low speed where it is difficult to affix a detector and where a highly efficient operation is required.
摘要翻译：一种用于交流电动机的场方向控制方法，其包括将任意轴作为同步旋转参考系中的估计控制轴; 向估计的控制轴注入高频波动信号; 使用由注入的高频信号产生的同步旋转参考系中的估计控制轴上的电流，电压或阻抗来确定控制轴的位置; 并且基于如此定位的控制轴确定转子的位置和速度。由于这种方法使用感应电机产生的阻抗变化和各种形状，所以控制性能比其他传统控制方法更稳定。该交流电动机的控制方法可以应用于在难以固定检测器的低速度下控制转矩，速度和位置以及需要高效率的操作。

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