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1. 发明授权

US5053690A Control method of pulse width modulation inverter and pulse width modulation inverter system 失效
标题翻译：脉宽调制逆变器和脉宽调制逆变器系统的控制方法
公开(公告)号：US5053690A
公开(公告)日：1991-10-01
申请号：US441964
申请日：1989-11-28
申请人： Nobuyoshi Mutoh , Keijiro Sakai , Hiroshi Fujii , Kenji Nantoh
发明人： Nobuyoshi Mutoh , Keijiro Sakai , Hiroshi Fujii , Kenji Nantoh
IPC分类号： H02M7/48 , H02P21/00 , H02P23/00 , H02P27/04 , H02P27/06 , H02P27/08
CPC分类号： H02P27/08 , H02M7/53873 , H02P23/0077 , H02M2007/53876
摘要： In spatial vector control of a pulse width modulation (PWM) inverter adapted for variable speed drive of an induction motor, a difference vector between magnetic flux vectors occurring during adjacent sampling periods is generated by synthesizing a zero vector and voltage vectors in such a manner that a resultant voltage vector always includes as a component a minimum unit of a zero vector or a voltage vector, whereby even when the angular speed of rotation of the magnetic flux changes, the switching frequency of the PWM inverter is prevented from decreasing and the current ripple is reduced.

2. 发明授权

US5023538A PWM inverter apparatus for controlling rotating magnetic flux in a.c. motors 失效
标题翻译：用于控制直流电机中的旋转磁通量的PWM逆变器装置电机
公开(公告)号：US5023538A
公开(公告)日：1991-06-11
申请号：US380039
申请日：1989-07-14
申请人： Nobuyoshi Mutoh , Keijiro Sakai , Akiteru Ueda , Hiroshi Fujii
发明人： Nobuyoshi Mutoh , Keijiro Sakai , Akiteru Ueda , Hiroshi Fujii
IPC分类号： H02M7/48 , H02M7/529 , H02P21/00 , H02P21/14 , H02P27/04
CPC分类号： H02M7/529 , H02P21/141
摘要： A PWM inverter apparatus used for driving an a.c. motor, including an inverter having an output part connected to the a.c. motor and switching elements on-off controlled by a PWM signal. The inverter apparatus also includes a part for receiving, at an interval of a given sampling period, status command information specifying a desired status of a vector of a rotating magnetic flux in the a.c. motor; a part for predicting, on the basis of at least the status command information received at each sampling time, the status of the vector of the rotating magnetic flux which will be produced at a next sampling time; a part for calculating a difference vector between the status of the vector of the rotating magnetic flux specified by the status command information received at a present sampling time and the predicted status of the vector of the rotating magnetic flux which will be produced at a next sampling time; a part for synthesizing the difference vector using selected reference voltage vectors from among a plurality of predetermined reference voltage vectors; and a part for generating a PWM signal for controlling the switching elements of the inverter so as to produce the selected reference voltage vectors.

3. 发明授权

US5184057A Control method and device for AC motor 失效
标题翻译：交流电机的控制方法和装置
公开(公告)号：US5184057A
公开(公告)日：1993-02-02
申请号：US581898
申请日：1990-09-13
申请人： Keijiro Sakai , Tunehiro Endo , Yuzuru Kubota , Takashi Ikimi , Nobuyoshi Mutoh , Mitsuyuki Honbu
发明人： Keijiro Sakai , Tunehiro Endo , Yuzuru Kubota , Takashi Ikimi , Nobuyoshi Mutoh , Mitsuyuki Honbu
IPC分类号： H02M5/458
CPC分类号： H02M5/4585
摘要： In a control method and device for an AC motor, when transforming output power of a converter to AC power by an inverter and controlling the AC motor with the AC power, a source current value is determined from the value of an electric variable in the input or output side of the inverter, and the converter is controlled in accordance with the source current value. This makes the source current free from an influence of ripple components. Accordingly, even when the load of the AC motor is fluctuated abruptly, the required AC power can be applied to the converter so as to follow such fluctuations.

4. 发明授权

US4562524A Control apparatus for PWM inverter 失效
标题翻译： PWM逆变器控制装置
公开(公告)号：US4562524A
公开(公告)日：1985-12-31
申请号：US664773
申请日：1984-10-25
申请人： Nobuyoshi Mutoh , Keijiro Sakai , Motonobu Hattori , Yuichiro Nagato
发明人： Nobuyoshi Mutoh , Keijiro Sakai , Motonobu Hattori , Yuichiro Nagato
IPC分类号： H02M7/48 , H02M7/217
CPC分类号： H02M7/53873
摘要： A control apparatus for producing a pulse width modulating signal to be used for operation of a PWM inverter wherein a modulating wave of a sinusoidal waveform corresponding to the desired AC output voltage of the inverter is sampled at selected periodical time intervals to obtain a level of the modulating wave at each sampling point and the interval is arithmetically determined between each sampling time point and a time point which appears between the sampling point and the next sampling point and at which time point a virtual triangular waveform, which has positive and negative peaks of a predetermined amplitude occurring alternately at the selected periodical time interval, takes the same level as the sampled level of the modulating wave. On the basis of the time interval, the PWM signal is produced.
摘要翻译：一种用于产生用于PWM逆变器的操作的脉宽调制信号的控制装置，其中以选定的周期时间间隔采样对应于逆变器的期望AC输出电压的正弦波形的调制波，以获得在每个采样点处的调制波和间隔在每个采样时间点和出现在采样点和下一个采样点之间的时间点之间算术确定，并且在该时间点，具有正，负峰值的虚拟三角波形在选定的周期时间间隔交替出现的预定幅度与调制波的采样电平相同。基于时间间隔，产生PWM信号。

5. 发明授权

US4688162A Rectifier control apparatus with improved power factor 失效
标题翻译：整流器控制装置具有改善的功率因数
公开(公告)号：US4688162A
公开(公告)日：1987-08-18
申请号：US841425
申请日：1986-03-19
申请人： Nobuyoshi Mutoh , Keijiro Sakai , Toshio Suzuki , Akiteru Ueda , Kenji Nandoh , Ikuo Okajima
发明人： Nobuyoshi Mutoh , Keijiro Sakai , Toshio Suzuki , Akiteru Ueda , Kenji Nandoh , Ikuo Okajima
IPC分类号： G05F1/70 , H02M3/00 , H02M3/157 , H02M7/06 , H02M7/12
CPC分类号： H02M3/157
摘要： A single phase, full wave diode bridge circuit is connected with a chopper on its DC output side. An output voltage of the chopper is smoothed by a smoothing capacitor and thereafter supplied for a load. A current control apparatus forms a current reference signal which is synchronized with an AC voltage applied to the bridge circuit and has a magnitude corresponding to a current flowing through the load and produces a deviation signal between the current reference signal and an actual AC input current of the bridge circuit. The chopper is controlled in accordance with the deviation signal so that the AC input current follows the current reference signal, whereby the power factor and the waveform of the AC input current in the bridge circuit are improved.
摘要翻译：单相全波二极管桥式电路与直流输出侧的斩波器相连。斩波器的输出电压由平滑电容器平滑化，然后供给负载。电流控制装置形成与施加到桥式电路的AC电压同步的电流参考信号，并且具有与流过负载的电流相对应的大小，并产生电流参考信号与实际交流输入电流之间的偏差信号桥电路。根据偏差信号控制斩波器，使交流输入电流跟随电流参考信号，从而提高桥式电路中的交流输入电流的功率因数和波形。

6. 发明授权

US4599549A Method and apparatus for controlling PWM inverters 失效
标题翻译：控制PWM逆变器的方法和装置
公开(公告)号：US4599549A
公开(公告)日：1986-07-08
申请号：US723646
申请日：1985-04-16
申请人： Nobuyoshi Mutoh , Keijiro Sakai , Akiteru Ueda , Akira Ishibashi , Ikuo Okajima
发明人： Nobuyoshi Mutoh , Keijiro Sakai , Akiteru Ueda , Akira Ishibashi , Ikuo Okajima
IPC分类号： H02M7/5387 , H02P23/04 , H02P25/02 , H02P27/08 , H02P5/40
CPC分类号： H02P27/08 , H02M7/53875 , H02P23/04 , H02P25/024 , H02P27/047
摘要： An AC motor such as an induction motor or a synchronous motor is driven by a PWM inverter circuit. Power switching elements of the inverter circuit are ignited by PWM pulses resulting from comparison of a carrier wave signal with a sine wave modulation signal at a frequency proportional to a frequency setting signal so as to control the inverter circuit. A current polarity detector detects positive and negative components of a DC current flowing in the input side of the inverter circuit. The frequency setting signal is so corrected as to be decreased when only the positive current component flows in excess of one period of the carrier wave signal or increased when only the negative current component flows in excess of the one period.
摘要翻译：诸如感应电动机或同步电动机的AC电动机由PWM逆变电路驱动。逆变器电路的电源开关元件由PWM脉冲点燃，脉冲是以与频率设定信号成比例的频率比较载波信号与正弦波调制信号，从而控制逆变器电路。电流极性检测器检测在逆变器电路的输入侧流动的直流电流的正和负分量。当只有正电流分量流过超过载波信号的一个周期时，频率设定信号被校正为减小，或者仅在负电流分量流过超过一个周期时增加。

7. 发明授权

US06229719B1 Method of inverter control and apparatus of the same 有权
标题翻译：变频器控制方法及其设备
公开(公告)号：US06229719B1
公开(公告)日：2001-05-08
申请号：US09655489
申请日：2000-09-05
申请人： Keijiro Sakai , Toshiaki Okuyama , Hiroshi Fujii
发明人： Keijiro Sakai , Toshiaki Okuyama , Hiroshi Fujii
IPC分类号： H02M540
CPC分类号： H02P21/18 , H02P21/22 , H02P21/26
摘要： An inverter control apparatus includes an instruction calculator which receives a speed instruction and a particular component of a current of a motor to obtain an output frequency instruction and output voltage instructions of an inverter and a current estimator to estimate, according to a reference phase obtained by integrating a current detection value of one phase of an ac motor and an output frequency instruction thereof, currents of other phases of the ac motor. The current estimator includes a uvw/dq converter which converts a fixed coordinate system into a rotating coordinate system, a dq/uvw converter which is connected to the uvw/dq converter and which converts the rotating coordinate system into the fixed coordinate system, and a closed loop to input an output from the dq/uvw converter to the uvw/dq converter. This system can therefore estimate currents of other phases according to the motor current of one phase.
摘要翻译：逆变器控制装置包括指令计算器，其接收速度指令和电动机的电流的特定分量，以获得反相器和电流估计器的输出频率指令和输出电压指令，以根据由集成交流电动机的一相的电流检测值和其输出频率指令，交流电动机的其他相的电流。电流估计器包括将固定坐标系转换为旋转坐标系的uvw / dq转换器，连接到uvw / dq转换器并将旋转坐标系转换成固定坐标系的dq / uvw转换器，闭环将dq / uvw转换器的输出输入到uvw / dq转换器。因此，该系统可以根据一相的电机电流来估计其他相的电流。

8. 发明授权

US06657412B2 Pulse width modulation method, pulse width modulator and power converter 有权
公开(公告)号：US06657412B2
公开(公告)日：2003-12-02
申请号：US09941873
申请日：2001-08-30
申请人： Seiji Ishida , Keijiro Sakai , Toshiaki Okuyama , Hiroshi Fujii , Hiroyuki Tomita , Tatsuo Ando , Yuhachi Takakura , Hideo Kimura
发明人： Seiji Ishida , Keijiro Sakai , Toshiaki Okuyama , Hiroshi Fujii , Hiroyuki Tomita , Tatsuo Ando , Yuhachi Takakura , Hideo Kimura
IPC分类号： G05B1128
CPC分类号： H03K7/08 , H02M7/53871
摘要： In detecting an output current of a power converter based on a DC current Idc of the power converter, the pulse width of the DC current Idc becomes narrower when the pulse width of a line voltage is narrower, and its detection becomes difficult. A voltage command correction unit 9 according to the present invention corrects voltage commands such that pulse width of a line voltage becomes zero when the pulse width of the line voltage is less than the minimum pulse width, not to output a line pulse, and an error generated by the correction is integrated. This integrated error is added to the line voltage in the next time, and the integrated pulse width of the line voltage is outputted when the pulse width becomes larger than or equal to the minimum pulse width.

9. 发明授权

US06496397B2 Inverter device 有权
标题翻译：变频器
公开(公告)号：US06496397B2
公开(公告)日：2002-12-17
申请号：US09826857
申请日：2001-04-06
申请人： Keijiro Sakai , Toshiaki Okuyama , Kinya Nakatsu , Seiji Ishida , Hiroshi Fujii , Junji Kato , Masahiro Hiraga
发明人： Keijiro Sakai , Toshiaki Okuyama , Kinya Nakatsu , Seiji Ishida , Hiroshi Fujii , Junji Kato , Masahiro Hiraga
IPC分类号： H02M7537
CPC分类号： H02M7/48 , H02M7/53875 , H02P27/08
摘要： An inverter device has a three-phase inverter for converting DC electric power into AC power for supplement to an AC electric motor and a control device operatively associated therewith, and the control device includes a phase current detection section for outputting a phase current waveform based on a DC input current and an operational processor section for performing operational processing for control of said inverter device based on the phase current waveform. Thereby, the inverter device can be constructed to be very compact.
摘要翻译：逆变器装置具有三相逆变器，用于将直流电力转换为交流电，以补充交流电动机和与其可操作地相关联的控制装置，并且控制装置包括相电流检测部分，用于输出基于直流输入电流和操作处理器部分，用于基于相电流波形执行用于控制所述逆变器装置的操作处理。因此，逆变器装置可以被构造成非常紧凑。

10. 发明授权

US5475293A Method for measuring characteristic constants of alternating current motor and controller thereof based on said method 失效
标题翻译：基于所述方法测量交流电动机的特性常数及其控制器的方法
公开(公告)号：US5475293A
公开(公告)日：1995-12-12
申请号：US121896
申请日：1993-09-16
申请人： Keijiro Sakai , Tsunehiro Endo , Toshiaki Okuyama , Hiroshi Fujii
发明人： Keijiro Sakai , Tsunehiro Endo , Toshiaki Okuyama , Hiroshi Fujii
IPC分类号： H02P21/00 , H02P21/04 , H02P21/14 , H02P5/34
CPC分类号： H02P21/04 , H02P21/16 , H02P21/34 , H02P2207/01
摘要： An inverter corrects an output voltage in accordance with the magnitude of output voltage error due to a dead time and an ON-state voltage drop in power elements so as to energize an AC motor in a manner of single phase alternating current excitation, by calculating an active component of current Iq and a reactive component of current Id from the phase .theta. of an excitation voltage vector and a detected instantaneous current value iu, and by measuring characteristic constants of the motor, including a combined resistance (r.sub.1 +r.sub.2) and a combined leakage inductance (l.sub.1 +l.sub.2), from an excitation voltage command value Vc.sub.1, Id and Iq. The measured values are used as the control constants for a speed sensorless vector control. Further, the resistances r.sub.1, r.sub.2, and a self-inductance L.sub.1, which are control constants, can be obtained based on the component in a primary voltage vector direction of a primary current vector Iq' and the component .pi./2 delayed from the primary voltage vector direction of the primary current vector Id'. In this way, the characteristic constants can be accurately measured without any inverter output voltage sensor.
摘要翻译：逆变器根据由于功率元件的死区时间和导通状态电压降引起的输出电压误差的大小来校正输出电压，以便以单相交流激励的方式对AC电动机通电，通过计算电流Iq的有效分量和来自激发电压矢量的相位θ和检测到的瞬时电流值iu的电流Id的无功分量，以及通过测量电动机的特性常数，包括组合电阻（r1 + r2）和组合电阻漏电感（l1 + I2），从励磁电压指令值Vc1，Id和Iq。测量值用作无速度传感器矢量控制的控制常数。此外，作为控制常数的电阻r1，r2和自感L1可以基于一次电流矢量Iq'的一次电压矢量方向的分量和从主电流矢量延迟的分量pi / 2来获得初级电流矢量Id'的电压矢量方向。以这种方式，可以在没有任何变频器输出电压传感器的情况下精确测量特性常数。

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