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。

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

IPC分类号： H02P27/06 ,  H02P21/08 ,  H02P27/04 ,  H02P27/08 ,  H02P5/40

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：US4480299A

公开(公告)日：1984-10-30

申请号：US449667

申请日：1982-12-14

申请人： Nobuyoshi Muto ,  Keijiro Sakai ,  Yasuo Matsuda ,  Kenji Nandoh

发明人： Nobuyoshi Muto ,  Keijiro Sakai ,  Yasuo Matsuda ,  Kenji Nandoh

IPC分类号： H02M5/44 ,  H02M7/48 ,  H02P27/08 ,  H02M1/12

CPC分类号： H02P27/08 ,  H02M5/44 ,  H02P27/047

摘要： A pulse width modulation inverter is controlled by the use of the fundamental wave voltage E.sub.1 of the inverter output as a feedback quantity, the fundamental wave voltage E.sub.1 being obtained as the product of a function g(K.sub.H) which is determined by the amplitude ratio K.sub.H of a carrier wave and a modulated wave, and a d.c. voltage E.sub.D input of the inverter.

摘要翻译： 通过使用逆变器输出的基波电压E1作为反馈量来控制脉宽调制逆变器，获得基波电压E1作为由振幅比KH确定的函数g（KH）的乘积 的载波和调制波，以及直流 变频器的电压ED输入。

公开(公告)号：US4451112A

公开(公告)日：1984-05-29

申请号：US342649

申请日：1982-01-25

申请人： Motonobu Hattori ,  Yasuharu Tamuro ,  Akira Ishibashi ,  Kenji Nandoh

发明人： Motonobu Hattori ,  Yasuharu Tamuro ,  Akira Ishibashi ,  Kenji Nandoh

IPC分类号： H02P27/06 ,  H02P1/30 ,  H02P23/00 ,  H02P27/04 ,  H02P27/08 ,  H02P1/26 ,  H02P1/28

CPC分类号： H02P29/025 ,  H02P1/029 ,  H02P1/30 ,  H02P23/0077 ,  H02P27/045 ,  H02P27/048 ,  H02P27/08 ,  H02P2207/01 ,  H02P27/047

摘要： A method and apparatus for controlling an induction motor, in which an AC power source is connected to the induction motor through a switch and a frequency converter, and the motor speed is controlled by controlling the output frequency and output voltage of the frequency converter. In the starting operation, the induction motor in a free-running state is supplied with an initial voltage in a given frequency which is expected to make the absolute value of the motor current minimum or near minimum, and then the supply voltage is increased gradually from the initial voltage with its frequency being retained at the given voltage. When the output frequency of the frequency converter reaches a predetermined value, the output frequency and voltage thereof are increased gradually with the ratio therebetween being maintained at a given value.

摘要翻译： 一种用于控制感应电动机的方法和装置，其中通过开关和变频器将AC电源连接到感应电动机，并且通过控制变频器的输出频率和输出电压来控制电动机速度。 在启动操作中，自由运行状态的感应电动机被提供给给定频率的初始电压，该初始电压预期使电动机电流的绝对值最小或接近最小，然后电源电压逐渐从 其频率保持在给定电压下的初始电压。 当变频器的输出频率达到预定值时，其输出频率和电压逐渐增加，其间的比例保持在给定值。

公开(公告)号：US4622628A

公开(公告)日：1986-11-11

申请号：US623085

申请日：1984-06-21

申请人： Shigeru Murasaki ,  Motonobu Hattori ,  Akira Ishibashi ,  Kenji Nandoh

发明人： Shigeru Murasaki ,  Motonobu Hattori ,  Akira Ishibashi ,  Kenji Nandoh

IPC分类号： H02M7/48 ,  H02M1/12 ,  H02P5/00

CPC分类号： H02M7/53873

摘要： An inverter for converting DC power to AC power, an oscillation control circuit for stepwise generating a command value concerning the conversion condition of the inverter, and an operation controller which, when the command value from the oscillation control circuit changes, controls the oscillation control circuit to repetitively generate alternate new and old or present command values before and after change of the command value. Particularly, this invention provides an inverter capable of continuing smooth operation even when the control system has a limited resolution.

摘要翻译： 一种用于将DC电力转换为AC电力的逆变器，用于逐步产生与逆变器的转换条件相关的指令值的振荡控制电路，以及当来自振荡控制电路的指令值变化时，控制振荡控制电路 在命令值改变之前和之后重复生成备用的新旧命令值。 特别地，本发明提供了即使在控制系统具有有限分辨率的情况下也能够继续平稳运行的逆变器。

公开(公告)号：US6058036A

公开(公告)日：2000-05-02

申请号：US988906

申请日：1997-12-11

申请人： Tsunehiro Endo ,  Seiji Ishida ,  Kenji Nandoh ,  Tadao Shimotsu ,  Hiroyuki Benya

发明人： Tsunehiro Endo ,  Seiji Ishida ,  Kenji Nandoh ,  Tadao Shimotsu ,  Hiroyuki Benya

IPC分类号： H02M7/04 ,  H02M7/12 ,  H02M7/48 ,  H02P27/06 ,  H02M3/24

CPC分类号： H02M7/53875

摘要： An inverter apparatus includes a basic control section including a main circuit which includes an inverter, and a control unit which controls the main circuit. The inverter apparatus also includes an I/O block which is connected to the basic control section, and is selected from a plurality of different types of I/O blocks. The I/O block includes an input/output interface. The input/output interface includes a signal connection terminal which transmits an input/output signal to/from the control unit. Operation management specifications of the main circuit are fixed independently of operation management specifications of the input/output interface. Operation specifications of the inverter apparatus change depending on the operation management specifications of the input/output interface, and are determined by the type of the I/O block which is connected to the basic control section, such that connecting the different types of I/O blocks to the basic control section causes the inverter apparatus to have different operation specifications.

摘要翻译： 逆变器装置包括基本控制部分，其包括包括逆变器的主电路和控制主电路的控制单元。 逆变器装置还包括连接到基本控制部分的I / O块，并且从多个不同类型的I / O块中选择。 I / O块包括一个输入/输出接口。 该输入/输出接口包括一个信号连接端子，该信号连接端子向/从该控制单元发送一个输入/输出信号。 主电路的运行管理规范是独立于输入/输出接口的操作管理规范进行固定的。 逆变器装置的动作规格根据输入输出接口的动作管理规格而变化，由与基本控制部连接的I / O块的种类决定，从而将不同种类的I / O块到基本控制部分使变频器设备具有不同的操作规格。

公开(公告)号：US5121283A

公开(公告)日：1992-06-09

申请号：US476347

申请日：1990-02-07

申请人： Satoshi Ibori ,  Shigeyuki Baba ,  Hiroshi Fujii ,  Takatsugu Kanbara ,  Kenji Nandoh

发明人： Satoshi Ibori ,  Shigeyuki Baba ,  Hiroshi Fujii ,  Takatsugu Kanbara ,  Kenji Nandoh

IPC分类号： H02H7/12 ,  H03K3/0233 ,  H03K3/42 ,  H03K17/08 ,  H03K17/0812

CPC分类号： H03K3/02337 ,  H03K17/08122 ,  H03K17/08128 ,  H03K3/42

摘要： This specification discloses an overcurrent protective circuit for detecting an overcurrent flowing through an electrostatic self-turn-off device and suppressing the overcurrent.The overcurrent protective circuit according to the present invention comprises a power source for supplying a driving voltage to the electrostatic self-turn-off device to turn on the device, a switching circuit for performing on-off control of the driving voltage to provide a driving signal to the self-turn-off device, and a circuit for detecting the voltage of the driving control terminal and holding the potential of the driving control terminal below the driving voltage in response to the detected voltage reaching a predetermined value.

公开(公告)号：US4527214A

公开(公告)日：1985-07-02

申请号：US481150

申请日：1983-04-01

申请人： Motonobu Hattori ,  Akira Ishibashi ,  Hiromi Ishida ,  Kenji Nandoh

发明人： Motonobu Hattori ,  Akira Ishibashi ,  Hiromi Ishida ,  Kenji Nandoh

IPC分类号： H02H7/085 ,  H02H3/093 ,  H02H7/08 ,  H02M1/36 ,  H02M5/45 ,  H02H7/122 ,  H02H5/04

CPC分类号： H02M1/36 ,  H02H3/0935 ,  H02M5/4505

摘要： A power inverter including a converter unit for rectifying AC power into DC power, an inverter for inverting the DC power into AC power for driving a load apparatus, and a protection apparatus for protecting the load apparatus from being overloaded. The load protecting apparatus comprises current detecting means for detecting a current supplied to the inverter unit from the converter unit, a memory for storing a thermally limited operation time characteristic determined in consideration of cooling effect proper to the load apparatus, and an abnormality detecting circuit for producing an abnormality signal to stop the operation of the inverter unit when an accumulated value calculated on the basis of the current value detected by the current detector at a predetermined sampling interval exceeds the characteristic value previously stored in the memory. The load apparatus can be positively protected from overload notwithstanding variations in the output voltage and the output frequency of the power inverter.

摘要翻译： 一种电力逆变器，包括用于将交流电转换成直流电力的转换器单元，用于将直流电转换成用于驱动负载装置的交流电力的逆变器，以及用于保护负载装置不被过载的保护装置。 负载保护装置包括电流检测装置，用于检测从转换器单元提供给逆变器单元的电流;存储器，用于存储考虑到适用于负载装置的冷却效果确定的热限制运行时间特性;以及异常检测电路， 产生异常信号以在基于由电流检测器检测的当前值以预定采样间隔计算的累加值超过预先存储在存储器中的特征值时停止逆变器单元的操作。 尽管输出电压和功率逆变器的输出频率有变化，负载装置也可以得到积极的保护，避免过载。