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公开(公告)号：US06404162B1
公开(公告)日：2002-06-11
申请号：US09565002
申请日：2000-05-04
申请人： Hirokazu Tajima , Shinichi Ishii , Hidetoshi Umida
发明人： Hirokazu Tajima , Shinichi Ishii , Hidetoshi Umida
IPC分类号： H02P528
CPC分类号： H02P21/18 , H02P21/24 , Y02P80/116
摘要： The present invention provides a variable-speed controlling device for use with an induction motor, which includes a means for compensating for the discrepancy between a secondary magnetic flux instruction value and a secondary magnetic flux actually occurring in an induction motor, realizes a satisfactory control by generating the secondary magnetic flux according to the instruction value, and can generate desired torque and improve a motor efficiency. The variable-speed controlling device according to the present invention, for use with an induction motor, includes a voltage instruction value calculating unit, an integrating unit, a power converting circuit, a current detecting unit, an induced voltage calculating unit, a position discrepancy amount calculating unit, and a compensating unit.
摘要翻译： 本发明提供一种与感应电动机一起使用的变速控制装置，其包括用于补偿二次磁通指令值与感应电动机中实际发生的次级磁通之间的差异的装置，实现令人满意的控制 根据指令值产生二次磁通量，可以产生期望的转矩，提高电机效率。 根据本发明的用于感应电动机的变速控制装置包括电压指令值计算单元，积分单元，功率转换电路，电流检测单元，感应电压计算单元，位置偏差 量计算单元和补偿单元。
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2.发明授权
公开(公告)号：US5623190A
公开(公告)日：1997-04-22
申请号：US307895
申请日：1994-09-16
申请人： Hirokazu Tajima , Hidetoshi Umida
发明人： Hirokazu Tajima , Hidetoshi Umida
CPC分类号： H02P21/00 , H02P21/16 , H02P21/50 , H02P29/0241 , G01R31/343
摘要： Disclosed are methods and apparatus for quickly measuring a primary resistance value of an AC motor without using high precision detectors and detecting malfunctions such as breaking of wire in the AC motor or in a power converting mechanism, open phase, and three-phase unbalance. A voltage drop attributable to the primary resistance of the AC motor can be estimated by using an estimated resistance value R.sub.1.sup.#, which is estimated in turn by an integral or proportional-plus-integral operation on the deviation between a detected magnetizing current value I.sub.M and a reference magnetizing current value I.sub.M *, in place of an actual primary resistance value R.sub.1. The time for the estimated resistance value R.sub.1.sup.# to reach the true primary resistance value is reduced with a varying reference magnetizing current value I.sub.M **. Variations of the estimated primary resistance values R.sub.1.sup.# s between the phases are corrected with a mean estimated primary resistance value R.sub.1M.sup.# according to a reference phase value .phi.*. Malfunctions such as open phase and breaking of wire are detected by comparing estimated primary resistance values obtained according to the reference phase value .phi.*.
摘要翻译： 公开了用于快速测量交流电动机的初级电阻值而不使用高精度检测器并检测交流电动机或电力转换机构中断线的故障，开路相和三相不平衡的方法和装置。 可以通过使用估计电阻值R1＃来估计归因于AC电动机的初级电阻的电压降，所估计的电阻值R1＃依次被积分或比例加积分运算估计为检测到的磁化电流值IM和 参考磁化电流值IM *代替实际的初级电阻值R1。 估计电阻值R1＃达到真正一次电阻值的时间随参考磁化电流值IM **的变化而减小。 相位之间的估计的初级电阻值R1＃s的变化根据参考相位值phi *以平均估计的初级电阻值R1M＃进行校正。 通过比较根据参考相位值phi *获得的估计的初级电阻值来检测诸如开路和断线的故障。
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公开(公告)号：US5880572A
公开(公告)日：1999-03-09
申请号：US839527
申请日：1997-04-14
CPC分类号： H02P21/08 , H02P2207/01
摘要： A variable-speed control apparatus computes the leakage inductance of an AC motor, correctly compensates the leakage inductance, and controls the variable speed of the AC motor. The variable-speed control apparatus has an AC signal generation circuit for generating an AC signal, and obtains a leakage inductance calculation value of the AC motor based on the AC signal and the measured actual current value. The differential value of the summation of a current command value and the AC signal is multiplied by the leakage inductance calculation value to generate a signal for use in compensating the voltage drop caused by the leakage inductance, and added to a voltage command value to cancel the deviation between the actual current value and the M-axis current command value and to obtain the second voltage command value. The second voltage command value is converted into a 3-phase voltage command value and used in controlling the AC motor, and the voltage drop caused by the leakage inductance can be compensated.
摘要翻译： 变速控制装置计算交流电动机的漏电感，正确补偿漏电感，并控制交流电动机的变速。 变速控制装置具有用于产生AC信号的AC信号产生电路，并且基于AC信号和测量的实际电流值获得AC电动机的漏电感计算值。 电流指令值和AC信号的和的差分值乘以漏电感计算值，以产生用于补偿由漏电感引起的电压降的信号，并加到电压指令值以取消 实际电流值与M轴电流指令值的偏差，得到第二电压指令值。 第二电压指令值被转换为三相电压指令值，用于控制交流电动机，并且可以补偿由漏电感引起的电压降。
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公开(公告)号：US06377018B2
公开(公告)日：2002-04-23
申请号：US09800258
申请日：2001-03-06
申请人： Hirokazu Tajima , Hidetoshi Umida
发明人： Hirokazu Tajima , Hidetoshi Umida
IPC分类号： H02P528
摘要： A control apparatus for estimating the flux, the current, and the speed of an AC motor using the current and the voltage, and controlling the vector of an AC motor using the estimated speed, a flux command, and a torque current command. The speed is estimated by adding a product of the deviation between the actual value and the estimated value of a magnetization current, the level of a torque current correspondence value, the sign correspondence value of a primary frequency command value, and a gain to an outer product of an estimated current deviation and an estimated flux. Thus, a stable speed estimating operation can be performed to successfully operate the motor in a low speed area in which a voltage frequency applied to the motor is extremely low.
摘要翻译： 一种控制装置，用于使用电流和电压来估计交流电动机的通量，电流和速度，并且使用估计速度，磁通指令和转矩电流指令来控制交流电动机的矢量。 通过将实际值与磁化电流的估计值，转矩电流对应值的电平，初级频率指令值的符号对应值和增益加到外部的乘积来估计速度 估计电流偏差和估计通量的乘积。 因此，可以执行稳定的速度估计操作，以在施加到电动机的电压频率非常低的低速区域中成功地操作电动机。
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公开(公告)号：US5828199A
公开(公告)日：1998-10-27
申请号：US908575
申请日：1997-08-08
摘要： A variable speed controller for an induction motor that estimates the primary angular frequency and the speed without causing any error in the drive region where the induced voltage is low. The primary angular frequency and speed estimating device includes: a changeover signal generator that generates a changeover signal indicative of a first mode of operation when the induced voltage is greater than the changeover threshold, and a second mode of operation when the induced voltage is less than the changeover threshold; a differentiator, filter, etc., for estimating the load torque; a sample holder that holds the estimated load torque in the second mode of operation; an adder that generates the acceleration and deceleration torque; an integrator that integrates the acceleration and deceleration torque with the mechanical time constant of the induction motor to obtain the second generated speed; an adder that generates a second primary angular frequency; and an output device that in the first mode of operation outputs the first generated primary angular frequency as the reference primary angular frequency and the first generated speed as the estimated speed, and in the second mode of operation outputs the second generated primary angular frequency as the reference primary angular frequency and the second generated speed as the estimated speed.
摘要翻译： 用于感应电动机的变速控制器，其估计主要角频率和速度，而不会在感应电压低的驱动区域中引起任何误差。 主角频率和速度估计装置包括：切换信号发生器，其在感应电压大于转换阈值时产生指示第一操作模式的转换信号，以及当感应电压小于转换阈值时的第二操作模式 转换阈值 用于估计负载转矩的微分器，滤波器等; 在第二操作模式下保持估计负载转矩的样本保持器; 产生加速和减速转矩的加法器; 积分器，其将加速和减速转矩与感应电动机的机械时间常数相加以获得第二生成速度; 产生第二主角频率的加法器; 以及在第一操作模式下输出第一产生的主角频率作为基准主角频率和第一生成速度作为估计速度的输出装置，并且在第二操作模式中，将第二生成的主角频率作为 参考主角频率和第二生成速度作为估计速度。
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公开(公告)号：US5959429A
公开(公告)日：1999-09-28
申请号：US22864
申请日：1998-02-12
申请人： Hirokazu Tajima , Hidetoshi Umida , Takashi Aihara
发明人： Hirokazu Tajima , Hidetoshi Umida , Takashi Aihara
CPC分类号： H02P21/09
摘要： When an induction motor is variable-speed-controlled via an electric power converting circuit, the magnetic flux of the induction motor is modulated by adding an alternating current signal to, for example, a magnetizing current command. For example, the component depending on the slip frequency of the induction motor is extracted by an extracting means from at least one of the amounts of changes of the voltage, the electric current, and the magnetic flux, which are caused by the modulation of the magnetic flux. The amount of the voltage or the electric current supplied to the motor, etc. is controlled based on the extracted component via an adjusting unit and a control means, thereby implementing superior control of the induction motor.
摘要翻译： 当通过电力转换电路对感应电动机进行变速控制时，通过将交流信号加到例如磁化电流指令来调制感应电动机的磁通量。 例如，取决于感应电动机的转差频率的分量由提取装置从电压，电流和磁通量的变化量中的至少一个中提取，这些变化是由 磁通量。 通过调整单元和控制单元，基于提取的组件来控制供给电动机等的电压或电流量，从而实现对感应电动机的优异的控制。
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公开(公告)号：US5859521A
公开(公告)日：1999-01-12
申请号：US871068
申请日：1997-06-09
CPC分类号： H02P21/08 , H02P21/16 , H02P2207/01
摘要： To provide a trans-vector controller for an alternating current ("AC") motor that facilitates operating the secondary resistance of the AC motor without experimentally rotating the AC motor.In a preferred embodiment, the variable speed control circuit, including a secondary resistance value generating device, changes the direct current ("DC") exciting current and operates the secondary resistance of an induction motor by superimposing an AC signal with small amplitude outputted from a AC signal generator onto a reference current value immediately before the start of the induction motor in the state of DC excitation.
摘要翻译： 为了提供用于交流电动机的二次电阻的交流（“AC”）电动机的跨矢量控制器，而不实验地旋转交流电动机。 在优选实施例中，包括次级电阻值产生装置的变速控制电路改变直流（“DC”）励磁电流，并且通过叠加输出的小振幅的AC信号来操作感应电动机的次级电阻 AC信号发生器在直流激励状态下紧接在感应电动机起动之前的参考电流值上。
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公开(公告)号：US5734251A
公开(公告)日：1998-03-31
申请号：US752425
申请日：1996-11-19
CPC分类号： H02P21/09
摘要： A control apparatus for conducting a variable speed control of an AC motor by controlling an M-axis component and a T-axis component of a current flowing through the AC motor. The control apparatus comprises: M-axis current regulator for executing proportional plus integral computation on a difference between an actual value of the M-axis component and an M-axis current reference value to obtain an M-axis proportional value and an M-axis integration value, and for determining an M-axis voltage reference value by adding the M-axis proportional value to the M-axis integration value; T-axis current regulator for executing proportional plus integral computation on a difference between an actual value of the T-axis component and a T-axis current reference value to obtain a T-axis proportional value and a T-axis integration value, and for determining a T-axis voltage reference value by adding the T-axis proportional value to the T-axis integration value; and a renewal coefficient computing device for computing a vector sum of the M-axis voltage reference value and the T-axis voltage reference value, and determining a renewal coefficient for renewing the M-axis integration value and the T-axis integration value based on the relation between the vector sum and a predetermined output voltage limit value.
摘要翻译： 一种用于通过控制流过所述AC电动机的电流的M轴分量和T轴分量来进行AC电动机的可变速度控制的控制装置。 控制装置包括：M轴电流调节器，用于对M轴分量的实际值与M轴电流参考值之间的差执行比例积分运算，以获得M轴比例值和M轴 积分值，并且通过将M轴比例值与M轴积分值相加来确定M轴电压基准值; T轴电流调节器，用于对T轴分量的实际值与T轴电流参考值之间的差执行比例积分运算，以获得T轴比例值和T轴积分值，并且 通过将T轴比例值与T轴积分值相加来确定T轴电压基准值; 以及更新系数计算装置，用于计算M轴电压参考值和T轴电压参考值的矢量和，并且基于以下方式确定用于更新M轴积分值和T轴积分值的更新系数 矢量和与预定的输出电压限制值之间的关系。
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公开(公告)号：US5532570A
公开(公告)日：1996-07-02
申请号：US407312
申请日：1995-03-20
申请人： Hirokazu Tajima , Hidetoshi Umida
发明人： Hirokazu Tajima , Hidetoshi Umida
CPC分类号： H02P21/06 , H02P21/08 , H02P21/141
摘要： A variable speed control for induction motors with a primary angular frequency operating circuit has a multiplier that multiplies the output of a first regulator by a variable responsive to magnetic flux intensity. This first regulator holds the M axis induced voltage at zero. The primary angular frequency operating circuit corrects the primary angular frequency command value based on the output of the multiplier. An adder adds the output of a second regulator circuit and the output of the primary angular frequency operating circuit. The second regulator regulates (by proportional or proportional-integral control) the deviation between the command value of the torque current, or the torque and an actual value, to zero. In another embodiment, the magnetic flux operating circuit calculates a first value and a second value. The first value is obtained by adding a result of multiplication of a reference frequency value by a magnetic flux command value and an absolute value of an induced voltage or a T axis induced voltage. The second value is the sum of the reference frequency value and an absolute value of the primary angular frequency command value. The magnetic flux operating circuit divides the first value by the second and obtains a calculated magnetic flux value by passing the result of the division through a low pass filter. The calculated magnetic flux value serves as an equivalent of the magnetic flux, which is a necessary input of the primary angular frequency operating circuit and the magnetic flux regulator.
摘要翻译： 具有主角频率操作电路的感应电动机的变速控制器具有乘法器，其将第一调节器的输出乘以响应于磁通量强度的变量。 该第一调节器将M轴感应电压保持在零。 主角频率工作电路根据乘法器的输出校正主角频率指令值。 加法器将第二调节器电路的输出和主角频率工作电路的输出相加。 第二个调节器通过比例或比例积分控制将转矩电流的指令值或转矩与实际值之间的偏差调整为零。 在另一个实施例中，磁通量操作电路计算第一值和第二值。 通过将参考频率值乘以磁通量指令值和感应电压或T轴感应电压的绝对值相加的结果来获得第一值。 第二个值是基准频率值和主角频率指令值的绝对值之和。 磁通量操作电路将第一值除以第二值，并通过将分频结果通过低通滤波器获得计算的磁通值。 所计算的磁通量值作为主要角频率运行电路和磁通量调节器的必要输入的磁通量的等效值。
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公开(公告)号：US06259611B1
公开(公告)日：2001-07-10
申请号：US09409999
申请日：1999-09-30
申请人： Junichi Ito , Shinichi Ishii , Hidetoshi Umida
发明人： Junichi Ito , Shinichi Ishii , Hidetoshi Umida
IPC分类号： H02M112
CPC分类号： H02M7/53875 , H02M7/5395
摘要： A PWM power converter is provided which includes an adder that adds a high-frequency signal from a high-frequency generator to a voltage command signal, and a PWM generator of carrier comparison type or space vector type that generates a PWM signal based on the output of the adder, which PWM signal is used for driving switching devices to provide a desired output voltage.
摘要翻译： 提供一种PWM功率转换器，其包括将来自高频发生器的高频信号与电压指令信号相加的加法器，以及基于输出产生PWM信号的载波比较型或空间矢量类型的PWM发生器 该PWM信号用于驱动开关器件以提供期望的输出电压。
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