-
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。
-
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
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。
-
3.发明授权PWM inverter apparatus for controlling rotating magnetic flux in a.c. motors 失效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
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.
-
4.发明授权Method and apparatus for selectively controlling an operation mode of a PWM inverter between an asychronous mode and a synchronous mode modulation 失效用于在异步模式和同步模式调制之间选择性地控制PWM逆变器的操作模式的方法和装置
公开(公告)号：US4779183A
公开(公告)日：1988-10-18
申请号：US76270
申请日：1987-07-22
申请人： Nobuyoshi Mutoh , Akiteru Ueda , Hideyuki Shimonabe , Satoshi Ibori , Motonobu Hattori , Kenji Nandoh , Yuuzi Yamasawa
发明人： Nobuyoshi Mutoh , Akiteru Ueda , Hideyuki Shimonabe , Satoshi Ibori , Motonobu Hattori , Kenji Nandoh , Yuuzi Yamasawa
IPC分类号： H02M7/48 , H02M7/529 , H02M7/5395 , H02P27/08 , H02M1/08
CPC分类号： H02M7/5395 , H02M7/529
摘要： A method and apparatus are disclosed for controlling a pulse width modulated (PWM) inverter controlled for ignition by a (PWM) pulse produced with a carrier wave and a modulation wave. The method comprises sampling an amplitude of the modulation wave at a cycle rate related to the frequency of the carrier wave. The modulation wave and the carrier wave are synchronized when the sample modulation wave amplitude has a peak value greater than an amplitude of the carrier wave. The modulation wave and the carrier wave are asynchronized when the sampled modulation wave has a peak value less than the amplitude of the carrier wave.
摘要翻译： 公开了一种用于控制通过用载波和调制波产生的（PWM）脉冲控制点火的脉宽调制（PWM）逆变器的方法和装置。 该方法包括以与载波频率相关的周期速率对调制波的振幅进行采样。 当采样调制波幅度具有大于载波振幅的峰值时，调制波和载波是同步的。 当采样的调制波具有小于载波振幅的峰值时，调制波和载波是不同步的。
-
公开(公告)号：US4767976A
公开(公告)日：1988-08-30
申请号：US37853
申请日：1987-04-13
申请人： Nobuyoshi Mutoh , Akiteru Ueda , Motonobu Hattori , Satoshi Ibori , Hideyuki Shimonabe , Kenji Nandoh
发明人： Nobuyoshi Mutoh , Akiteru Ueda , Motonobu Hattori , Satoshi Ibori , Hideyuki Shimonabe , Kenji Nandoh
CPC分类号： H02P27/08 , H02P27/047
摘要： A control system for controlling a PWM inverter so that the inverter drives an induction motor at a variable voltage and a variable frequency while keeping constant a ratio of the output voltage of the inverter to the output frequency thereof, is disclosed which includes current component detecting means for detecting an effective current corresponding to a load, from the input current of the induction motor, frequency setting means for setting the output frequency of the PWM inverter, flux setting means for setting the amount of magnetic flux generated in the induction motor, correcting-frequency calculating means for calculating a frequency correcting quantity proportional to the effective current, and correcting-flux calculating means for calculating a flux correcting quantity proportional to the effective current. In a case where the detected effective current is judged to be less than a predetermined value, the frequency correcting quantity is added to the set output frequency to obtain an output frequency command, and the sum of the flux correcting quantity and the set amount of magnetic flux is multiplied by the value of the output frequency command to obtain an output voltage command, for the purpose of controlling the operation of the PWM inverter on the basis of the output frequency command and the output voltage command.
摘要翻译： 一种用于控制PWM逆变器的控制系统，使得逆变器以可变电压和可变频率驱动感应电动机，同时保持变频器的输出电压与其输出频率的比例恒定，其包括电流分量检测装置 用于从感应电动机的输入电流检测与负载相对应的有效电流;频率设定装置，用于设定PWM逆变器的输出频率;磁通设定装置，用于设定感应电动机中产生的磁通量， 频率计算装置，用于计算与有效电流成比例的频率校正量;以及校正磁通计算装置，用于计算与有效电流成比例的磁通校正量。 在检测到的有效电流被判断为小于预定值的情况下，将频率校正量与设定的输出频率相加，得到输出频率指令，并且磁通校正量与设定的磁场量之和 为了根据输出频率指令和输出电压指令来控制PWM逆变器的运行，磁通量乘以输出频率指令的值以获得输出电压指令。
-
公开(公告)号：US4629034A
公开(公告)日：1986-12-16
申请号：US627640
申请日：1984-07-03
申请人： Hiromi Inaba , Hajime Nakashima , Hisakatsu Kiwaki , Akiteru Ueda , Takeki Ando , Toshiaki Kurosawa , Yoshio Sakai
发明人： Hiromi Inaba , Hajime Nakashima , Hisakatsu Kiwaki , Akiteru Ueda , Takeki Ando , Toshiaki Kurosawa , Yoshio Sakai
摘要： In an elevator wherein an elevator cage is repeatedly run among a plurality of floors by controlling a cage driving motor in accordance with a velocity command; a floor arrival error involved when the elevator cage has arrived at the floor is detected, and the velocity command for the subsequent operation is corrected in accordance with the floor arrival error, thereby to enhance the floor arrival precision.
摘要翻译： 一种电梯，其中电梯轿厢通过根据速度指令控制轿厢驱动电机而在多个楼层之间重复地运行; 检测到当电梯轿厢到达地板时涉及的楼层到达错误，并且根据楼层到达错误来校正用于后续操作的速度命令，从而提高楼层到达精度。
-
公开(公告)号：US4672520A
公开(公告)日：1987-06-09
申请号：US789826
申请日：1985-10-21
申请人： Shigeta Ueda , Mitsuyuki Hombu , Kazuo Honda , Akiteru Ueda , Katsunori Suzuki , Seiya Shima
发明人： Shigeta Ueda , Mitsuyuki Hombu , Kazuo Honda , Akiteru Ueda , Katsunori Suzuki , Seiya Shima
CPC分类号： B66B1/30 , H02J9/062 , H02M5/4505 , Y10T307/625
摘要： A current-source power converting apparatus having a three phase AC-DC converter composed of self-extinction devices for converting an AC power furnished from an three phase AC power source into a DC power and a DC-AC inverter connected with the AC-DC converter through a DC reactor for re-converting the DC power into a three phase AC power to supply the re-converted power for a load. When the failure of the AC power source is detect according to one embodiment, the AC power source is detached from the AC-DC converter and a battery is connected between arbitrary two phases at the input end of the AC-DC converter. After that, the DC power of the battery is supplied for the DC-AC inverter intermittently by switching the corresponding self-extinction devices of the AC-DC converter and controlled by varying the duty ratio of the switching operation.
摘要翻译： 一种具有三相AC-DC转换器的电流源电力转换装置，该三相AC-DC转换器由用于将从三相交流电源提供的AC电力转换为直流电力的自消除装置和与AC-DC连接的DC-AC逆变器 转换器通过直流电抗器将直流电转换为三相交流电源，为负载提供重新转换的电力。 当根据一个实施例检测到交流电源的故障时，交流电源从AC-DC转换器分离，电池在AC-DC转换器的输入端连接在任意两相之间。 之后，通过切换AC-DC转换器的相应的自消除装置并通过改变开关操作的占空比进行控制，间断地为DC-AC逆变器提供电池的直流电力。
-
公开(公告)号：US5424937A
公开(公告)日：1995-06-13
申请号：US073392
申请日：1993-06-09
CPC分类号： H03K17/08144 , H02M1/08 , H02M1/088 , H03K2217/0036 , H03K2217/0081
摘要： An electric power converter comprising a plurality of reactors, a plurality of self quenching type switching elements, the reactors and switching elements being series-connected per one arm, and surge-absorbing snubber circuits connected in parallel to the switching elements respectively, the switching circuits being driven by gate drive circuits connected to respective gates of the switching elements to thereby convert a DC voltage into an AC voltage or convert an AC voltage into a DC voltage. The electric power converter further comprises: an apparatus for recovering energy accumulated on at least one side of the reactors and the snubber circuits and an apparatus for generating a DC source for supplying electric power to each of the gate drive circuits, on the basis of the recovered energy. In the electric power converter constituted by a plurality of self quenching type semiconductor switching elements connected in series, high efficiency is attained through reduction in size of the gate driver and electric power saving.
摘要翻译： 一种电力转换器，包括多个反应器，多个自熄型开关元件，每个臂串联连接的电抗器和开关元件以及分别与开关元件并联连接的浪涌吸收缓冲电路，开关电路 由连接到开关元件的各个栅极的栅极驱动电路驱动，从而将DC电压转换为AC电压或将AC电压转换为DC电压。 电力转换器还包括：用于回收积聚在电抗器的至少一侧的能量的装置和缓冲电路，以及用于产生用于向每个栅极驱动电路提供电力的DC源的装置， 恢复能量。 在由串联连接的多个自熄型半导体开关元件构成的电力转换器中，通过减小栅极驱动器的尺寸和节省电力来实现高效率。
-
公开(公告)号：US5105143A
公开(公告)日：1992-04-14
申请号：US347199
申请日：1989-05-04
申请人： Katsuji Marumoto , Keiichi Mashino , Akiteru Ueda
发明人： Katsuji Marumoto , Keiichi Mashino , Akiteru Ueda
摘要： A charging generator output control system for automobiles is disclosed, in which the field current of the generator is controlled by a chopper, an output voltage of the generator is compared with a predetermined target voltage, the difference therebetween is detected, and the duty factor of an output signal of the chopper is controlled in accordance with the difference while at the same time controlling the frequency of an output signal of the chopper in accordance with the duty factor, thus reducing the difference substantially to zero.
摘要翻译： 公开了一种用于汽车的充电发生器输出控制系统，其中发电机的励磁电流由斩波器控制，发电机的输出电压与预定的目标电压进行比较，检测到它们之间的差值， 根据差异来控制斩波器的输出信号，同时根据占空因数控制斩波器的输出信号的频率，从而将差值基本上减小到零。
-
公开(公告)号：US4779709A
公开(公告)日：1988-10-25
申请号：US899640
申请日：1986-08-25
申请人： Nobuo Mitsui , Yoshio Sakai , Masao Nakazato , Mitsuyuki Honbu , Shigeta Ueda , Seiya Shima , Katsu Komuro , Takeki Ando , Akiteru Ueda , Kazuhiko Sasaki , Toshiaki Kurosawa
发明人： Nobuo Mitsui , Yoshio Sakai , Masao Nakazato , Mitsuyuki Honbu , Shigeta Ueda , Seiya Shima , Katsu Komuro , Takeki Ando , Akiteru Ueda , Kazuhiko Sasaki , Toshiaki Kurosawa
CPC分类号： H02M5/4585
摘要： An elevator control apparatus comprises an inverter device for supplying an induction motor for driving an elevator cage with AC electric power of variable voltage and frequencies and control equipment for controlling the output voltage and frequencies of the inverter device in response to signals produced in floors served by the elevator and in an elevator cage. The inverter device is constructed by a converter unit for converting AC electric power to DC electric power, at the input end of which a capacitor is connected in parallel with an AC electric source, an inverter unit for inverting the DC electric power converted in the converter unit into AC electric power, at the output end of which a capacitor is connected in parallel with an induction motor for driving the elevator cage and a DC reactor connected between the converter unit and the inverter unit.The thus constructed elevator control apparatus does not cause interference in electric appliances such as audio equipment, computer etc. existing within a building in which the elevator is installed.
摘要翻译： 电梯控制装置包括：逆变器装置，用于提供用于驱动电梯轿厢的感应电动机，其具有可变电压和频率的交流电;以及控制设备，用于响应于由服务的楼层产生的信号来控制逆变器装置的输出电压和频率 电梯和电梯笼。 逆变器装置由转换器单元构成，用于将AC电力转换成DC电力，其输入端与AC电源并联连接电容器;反相器单元，用于使在转换器中转换的DC电力反相 单元转换为交流电力，其输出端与用于驱动电梯轿厢的感应电动机并联连接电容器，连接在转换器单元和逆变器单元之间的直流电抗器。 这样构成的电梯控制装置不会对存在于安装有电梯的建筑物内的音响设备，电脑等电器产生干扰。
-
-
-
-
-
-
-
-
-
搜索结果
10 条记录 (耗时 0.02 秒)
