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公开(公告)号：US4698581A
公开(公告)日：1987-10-06
申请号：US903957
申请日：1986-09-05
CPC分类号： H02J3/1864 , Y02E40/12
摘要： In a reactive power compensation apparatus for compensating reactive power generated by a load connected to an AC power supply system, dual phase current signals obtained by dual phase-converting the load currents and unit dual phase voltage signals synchronized with voltages of an AC main line connected to the load are used, and arithmetic operations thereof are performed to separately detect an in-phase reactive component signal and opposite phase component signals of the load currents. Current commands are generated on the basis of the separately detected signals, thereby controlling the reactive power compensation apparatus on the basis of the current commands.
摘要翻译： 在用于补偿由连接到AC电源系统的负载产生的无功功率的无功功率补偿装置中，通过双相转换负载电流和单元双相电压信号获得的双相电流信号与连接的AC主线的电压同步 使用负载，并且执行其算术运算以分别检测负载电流的同相无功分量信号和相反相位分量信号。 基于单独检测的信号产生电流指令，从而根据当前命令控制无功补偿装置。
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公开(公告)号：US4652989A
公开(公告)日：1987-03-24
申请号：US770071
申请日：1985-08-28
申请人： Ryoichi Kurosawa , Takeo Shimamura
发明人： Ryoichi Kurosawa , Takeo Shimamura
CPC分类号： H02M5/273
摘要： A frequency converter apparatus is provided with a frequency converter coupled to an AC power supply and to a load. The frequency converter converts an AC input with a given input frequency into an AC output with a given output frequency. The frequency converter apparatus is further provided with a frequency reference circuit and a harmonic cancel circuit. The frequency reference circuit supplies a reference signal to the frequency converter so that the output frequency of the AC output follows the reference signal. The harmonic cancel circuit supplies a harmonic cancelling signal to the frequency reference circuit so that the prescribed order of the higher harmonic of the AC output is substantially cancelled according to the frequency, magnitude and phase of the harmonic cancelling signal.
摘要翻译： 变频器装置具有耦合到AC电源和负载的变频器。 变频器将具有给定输入频率的交流输入转换为具有给定输出频率的交流输出。 变频器装置还具有频率参考电路和谐波消除电路。 频率参考电路向变频器提供参考信号，使得AC输出的输出频率遵循参考信号。 谐波消除电路向频率参考电路提供谐波消除信号，使得根据谐波消除信号的频率，幅度和相位基本上消除AC输出的高次谐波的规定次序。
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公开(公告)号：US4755738A
公开(公告)日：1988-07-05
申请号：US91666
申请日：1987-09-01
CPC分类号： H02J3/1864 , Y02E40/12
摘要： A reactive power compensation apparatus for compensating for voltage fluctuation of an AC power supply system includes a first arithmetic circuit for synthesizing a positive-phase fundamental wave voltage signal from voltages of the AC power supply system, a second arithmetic circuit for synthesizing negative-phase voltage signals from the voltages of the AC power supply system, a third arithmetic circuit, coupled to the first and second arithmetic circuits, for synthesizing current instructions from the positive-phase fundamental wave voltage and the negative-phase voltage signals, and a circuit, coupled to the third arithmetic circuit, for generating a reactive power corresponding to the current instructions.
摘要翻译： 用于补偿交流电源系统的电压波动的无功补偿装置包括：第一运算电路，用于从交流电源系统的电压合成正相基波电压信号;第二运算电路，用于合成负相电压 来自交流电源系统的电压的信号，耦合到第一和第二运算电路的第三运算电路，用于从正相基波电压和负相电压信号合成电流指令，以及耦合 到第三运算电路，用于产生与当前指令相对应的无功功率。
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公开(公告)号：US4032831A
公开(公告)日：1977-06-28
申请号：US635156
申请日：1975-11-24
CPC分类号： H02M7/515
摘要： In an inverter apparatus including a plurality of parallel branch circuits connected across a D.C. source, each including a pair of serially connected controllable switching elements, and a plurality of semiconductor elements connected in parallel opposition with respective switching elements, a D.C. reactor is connected on the D.C. side or A.C. side of the inverter and a circuit is connected across the D.C. reactor for preventing attenuation of the current flowing through the D.C. reactor during the OFF period of the switching elements. A source of control pulses is provided for rendering ON respective controllable switching elements each for a 120.degree. interval of the output alternating current. The source of control pulse includes means for chopping the current flowing through each controllable switching element at a predetermined modulation frequency for the former or latter 60.degree. of the 120.degree. interval.
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公开(公告)号：US4555755A
公开(公告)日：1985-11-26
申请号：US589998
申请日：1984-03-15
申请人： Ryoichi Kurosawa , Takeo Shimamura
发明人： Ryoichi Kurosawa , Takeo Shimamura
摘要： In an AC current control system for controlling multi-phase AC currents supplied from a power converter to a load, the currents are detected and coordinate-transformed into orthogonal two-axis current values i.sub.d, i.sub.q in a rotating coordinate rotating at an angular frequency .omega., and then compared with the references. The deviations are used to determine two-axis voltage values e.sub.d *, e.sub.q *, which are coordinate-transformed into multi-phase voltage values determining the output voltages of the power converter. The system is characterized in that the voltage value e.sub.d * is determined not only from .DELTA.i.sub.d but also from the product of .omega. and .DELTA.i.sub.q, while the voltage value e.sub.q * is determined not only from .DELTA.i.sub.q but also from the product of .omega. and .DELTA.i.sub.d. This arrangement makes it possible to provide a voltage component corresponding to the voltage drop across the inductive component of the load which is 90.degree. in advance of the current.
摘要翻译： 在用于控制从功率转换器提供给负载的多相AC电流的交流电流控制系统中，检测电流，并以旋转的坐标转换成正交的两轴电流值id，iq，旋转坐标以角频率ω ，然后与参考文献进行比较。 这些偏差用于确定两轴电压值ed *，eq *，它们被坐标转换为确定功率转换器的输出电压的多相电压值。 该系统的特征在于，电压值ed *不仅来自DELTA id，而且还由ω和ΔTAiq的乘积确定，而电压值eq *不仅来自DELTA iq，而且还由Ω和 DELTA ID。 这种布置使得可以提供与电流之前90度的负载的电感分量两端的电压降相对应的电压分量。
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公开(公告)号：US4482855A
公开(公告)日：1984-11-13
申请号：US495474
申请日：1983-05-17
申请人： Kenichi Otsuka , Takeo Shimamura
发明人： Kenichi Otsuka , Takeo Shimamura
CPC分类号： H02M7/529
摘要： A current control apparatus includes an instructor for providing a DC amplitude instruction and an AC phase instruction, and a cycloconverter for supplying an induction motor with AC load currents. These load currents are detected by sensors. The sensed signals from the sensors are applied to a detector. The detector generates a DC phase error signal and a DC amplitude signal according to the load currents and the phase instruction. The amplitude instruction, amplitude signal and phase error signal are applied to a comparator circuit. The comparator circuit generates a first voltage instruction and a second voltage instruction. These first and second voltage instructions are applied to a control circuit. The control circuit supplies the cycloconverter with voltage instructions. The comparator circuit, control circuit, cycloconverter, sensors and detector constitute a closed DC feedback control loop which utilizes a vector control method.
摘要翻译： 电流控制装置包括用于提供DC幅度指令和AC相位指令的指示器，以及用于向感应电动机提供AC负载电流的循环换流器。 这些负载电流由传感器检测。 来自传感器的感测信号被施加到检测器。 检测器根据负载电流和相位指令产生直流相位误差信号和直流振幅信号。 振幅指令，幅度信号和相位误差信号被施加到比较器电路。 比较器电路产生第一电压指令和第二电压指令。 这些第一和第二电压指令被施加到控制电路。 控制电路为循环变频器提供电压指令。 比较器电路，控制电路，循环换流器，传感器和检测器构成了利用矢量控制方法的闭合直流反馈控制回路。
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公开(公告)号：US5191273A
公开(公告)日：1993-03-02
申请号：US905146
申请日：1992-06-23
申请人： Takeo Shimamura
发明人： Takeo Shimamura
摘要： This invention proposes an operating control device and method for a winding type induction machine that ensures that the harmonic components naturally present in the primary voltage of a winding type induction machine, do not correspond to the antiresonance point of the impedance characteristic of the transmission system to which the winding type induction machine is connected. Those corresponding harmonic components are eliminated from the primary winding of the winding type induction machine by applying appropriate voltage command values to a PWM controlled inverter if there is distortion of the primary voltage or if the transmission system is being changed over.
摘要翻译： 本发明提出了一种用于绕组式感应电机的操作控制装置和方法，其确保绕组型感应电机的初级电压中自然存在的谐波分量不对应于传输系统的阻抗特性的反共振点 绕组式感应电机连接。 如果发生主电压失真或传输系统正在改变，则通过向PWM控制的逆变器施加适当的电压指令值，从绕组式感应电机的初级绕组中消除这些相应的谐波分量。
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公开(公告)号：US4794316A
公开(公告)日：1988-12-27
申请号：US071139
申请日：1987-07-08
申请人： Hiroshi Uchino , Takeo Shimamura
发明人： Hiroshi Uchino , Takeo Shimamura
CPC分类号： H02P9/105 , H02P9/007 , H02P9/42 , H02P2101/10
摘要： An induction system of the invention is adapted to apply coordinate transformation to the excitation current reference vector corresponding to the primary interlinkage magnetic flux vector reference value and the primary current vector so that they exist in the same coordinate system, thereafter to control the secondary current vector so that the primary interlinkage magnetic flux vector is in correspondence with the primary interlinkage magnetic flux vector, thereby allowing the primary side of the wound-rotor induction machine to function apparently as a voltage source.
摘要翻译： 本发明的感应系统适用于将坐标变换应用于与主交流磁通矢量参考值和初级电流矢量对应的励磁电流参考矢量，使其存在于相同坐标系中，此后控制二次电流矢量 使得主交流磁通矢量与初级交链磁通矢量对应，从而允许绕线转子感应电机的初级侧作为电压源显现。
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公开(公告)号：US3983463A
公开(公告)日：1976-09-28
申请号：US501783
申请日：1974-08-29
申请人： Akira Nabae , Takeo Shimamura
发明人： Akira Nabae , Takeo Shimamura
CPC分类号： H02P27/08 , B60L11/08 , H02P27/045 , H02P27/048 , B60L2220/12 , H02P2207/01 , H02P27/047 , Y02T10/646 , Y02T10/648 , Y02T10/70 , Y02T10/7077
摘要： In a method and apparatus for controlling the speed of an induction motor energized from a source of variable frequency, e.g. a controllable inverter, a control signal which is a function of the primary current of the induction motor is produced, a predetermined slip frequency pattern signal is generated in accordance with the control signal, and the source is controlled in accordance with the slip frequency pattern signal for controlling the operating frequency. By suitably determining the shape of the slip frequency pattern signal it is possible to operate the induction motor with either one of normal induction motor characteristic, DC series motor characteristic, DC shunt motor characteristic, DC weak field motor characteristic and DC compound motor characteristic, and to operate the induction motor for smooth and continuous power regeneration.
摘要翻译： 在用于控制从可变频率源通电的感应电动机的速度的方法和装置中，例如， 产生可控逆变器，作为感应电动机的初级电流的函数的控制信号，根据控制信号生成预定的转差频率模式信号，根据转差频率模式信号来控制源 用于控制工作频率。 通过适当地确定滑差频率模式信号的形状，可以利用正常感应电动机特性，直流串联电动机特性，直流并联电动机特性，直流弱电动机特性和直流复合电动机特性中的任何一个来操作感应电动机，以及 操作感应电机，实现平稳连续的动力再生。
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