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    • 1. 发明授权
    • Inverter apparatus capable of readily modification of the specification
and performance thereof
    • 能够容易地修改其规格和性能的变频装置
    • US5949663A
    • 1999-09-07
    • US99391
    • 1998-06-18
    • Tsunehiro EndoKinya NakatsuHiroshi FujiiNorinaga SuzukiMasahiro Hiraga
    • Tsunehiro EndoKinya NakatsuHiroshi FujiiNorinaga SuzukiMasahiro Hiraga
    • H01L21/822H01L27/04H02M7/00H02M7/12H02M7/21H02M7/48H02P27/06H02M5/458
    • H02M7/003H02M7/53873H01L2224/48091
    • Objects of the present invention are to provide an inverter apparatus in which the specification thereof can be readily changed without changing an inverter basic unit, and to provide an inverter apparatus in which an inverter basic unit and an I/O block unit can be readily separated and the number of degrees of freedom of installation can be increased. An inverter apparatus of the present invention is constituted by an inverter basic unit and an I/O block unit which is connected to the inverter basic unit separately therefrom. The inverter basic unit is constituted by a power module which includes a DC/AC converter and a controller including a microcomputer for managing the DC/AC converter. The I/O block unit is constructed in the form of an I/O block unit which includes an input/output interface unit having signal connection terminals. Since the plurality kinds of I/O block units can be connected to the inverter basic unit and also the software of the microcomputer can be changed with the microcomputer mounted on the associated substrate, the specification and the performance of the inverter apparatus can be readily changed.
    • 本发明的目的是提供一种逆变器装置,其中可以容易地改变其规格而不改变逆变器基本单元,并且提供一种逆变器装置,其中逆变器基本单元和I / O块单元可以容易地分离 并且可以增加安装的自由度。 本发明的逆变器装置由与逆变器基本单元分开连接的逆变器基本单元和I / O块单元构成。 逆变器基本单元由包括DC / AC转换器的电源模块和包括用于管理DC / AC转换器的微计算机的控制器构成。 I / O块单元以I / O块单元的形式构成,其包括具有信号连接端子的输入/输出接口单元。 由于可以将多种I / O块单元连接到逆变器基本单元,并且也可以通过安装在相关基板上的微型计算机来改变微型计算机的软件,因此可以容易地改变逆变器装置的规格和性能 。
    • 4. 发明授权
    • PWM converter system
    • PWM转换器系统
    • US06556464B2
    • 2003-04-29
    • US09956257
    • 2001-09-20
    • Keijirou SakaiToshiaki OkuyamaKinya NakatsuSeiji IshidaHiroshi FujiiJunji KatoMasahiro Hiraga
    • Keijirou SakaiToshiaki OkuyamaKinya NakatsuSeiji IshidaHiroshi FujiiJunji KatoMasahiro Hiraga
    • H02M75387
    • H02M1/4233H02M1/4216H02M2001/0012Y02B70/126
    • A single-phase PWM converter system in accordance with the present invention employs a sample-and-hold circuit which samples and holds a direct current in the state wherein one of two-phase gate signals of a positive or negative side arm is ON and the other phase is OFF, determines the sign of an output of the sample-and-hold circuit according to the two-phase gate condition, detects a phase current at the input side of the converter, and controls a voltage at the input side of the converter so that the detected current value agrees with a power supply current command. Further, a three-phase PWM converter system in accordance with the present invention detects the effective current and the ineffective current of the power supply current from the direct current, and based on the values, controls the PWM converter so that the sine wave power supply current whose power supply power factor is 1 is provided.
    • 根据本发明的单相PWM转换器系统采用采样和保持电路,其采样和保持直流电流,其中正或负侧臂的两相门信号之一为ON, 其他相位为OFF,根据两相门条件确定采样保持电路的输出的符号,检测转换器输入侧的相电流,并控制转换器的输入侧的电压 转换器,使得检测到的电流值与电源电流指令一致。此外,根据本发明的三相PWM转换器系统从直流电流检测电源电流的有效电流和无效电流,并且基于 在该值上,控制PWM转换器,使得提供功率因数为1的正弦波电源电流。
    • 7. 发明授权
    • Driving system of AC motor
    • US06531843B2
    • 2003-03-11
    • US09941791
    • 2001-08-30
    • Yoshitaka IwajiTsunehiro EndoHiroshi FujiiTatsuo Ando
    • Yoshitaka IwajiTsunehiro EndoHiroshi FujiiTatsuo Ando
    • H02P124
    • H02P6/085H02P6/18
    • The present invention provides a control algorithm which instantaneously detects magnetic pole positions in the inside of a motor including polarities of the motor. A controller 1 applies a minute voltage change vhd to a voltage command on a dc axis which constitutes an estimation magnetic pole axis of the motor 3, detects electric currents Idc, Iqc of a motor 3 and discriminates the polarities of the magnetic pole axes by making use of the difference between a cycle in which ripple components of the electric currents Idc, Iqc become positive and a cycle in which the ripple components become negative or the difference between positive-side and negative-side current change rates. Further, the minute voltage change vhd with respect to the above-mentioned voltage command is generated on both of the dc axis and the qc axis rectangular thereto, and the magnetic pole positions of the motor are directly estimated based on the current ripple components on the respective axes. Without separately providing a cycle for discriminating the polarities of the magnetic poles, the cycle from the turning-on of a power source to the starting of the motor can be shortened so that the high-speed starting of the motor can be realized.
    • 8. 发明授权
    • Frequency control method for inverter and apparatus therefor
    • 变频器频率控制方法及其设备
    • US5574352A
    • 1996-11-12
    • US277977
    • 1994-07-20
    • Tsunehiro EndoTsuyoshi SasakiHiroshi FujiiSeiji Ishida
    • Tsunehiro EndoTsuyoshi SasakiHiroshi FujiiSeiji Ishida
    • G05B13/02H02H7/122H02M7/48H02P23/00H02P27/06H02P5/34
    • H02P23/20H02H7/122Y10S706/90
    • A trip-resistant frequency control inverter which prevents an overcurrent and overvoltage by frequency control of a motor. Such arrangement provides for generating an accelerating or decelerating rate from the output from a fuzzy controller, which inputs the difference between limiting values and detected values and their changes. The arrangement also provides at the time of acceleration a control which automatically generates an accelerating rate which maintains the current in the vicinity of the limiting value, and a normal acceleration part which adjusts the set accelerating rate. The arrangement further provides at the time of deceleration a control which automatically generates a decelerating rate which maintains the current and voltage in the vicinity of their limiting values, and a normal deceleration part which adjusts the set decelerating rate. Further, the arrangement provides during a steady state operation a control which automatically determines the accelerating or decelerating rate which maintains the current in the vicinity of the limiting value, and wherein the two control parts for automatic and normal operation are selectable by an operator.
    • 防跳频变频器,通过电机的频率控制来防止过电流和过电压。 这种布置提供从模糊控制器的输出产生加速或减速率,其输入限制值和检测值之间的差异及其变化。 该装置在加速时也提供自动产生将电流保持在极限值附近的加速度的控制,以及调整设定加速度的正常加速部。 该装置在减速时进一步提供自动产生保持其极限值附近的电流和电压的减速率的控制和调整设定减速率的正常减速部。 此外,该布置在稳态操作期间提供自动确定将电流保持在极限值附近的加速或减速速率的控制,并且其中用于自动和正常操作的两个控制部件可由操作者选择。
    • 9. 发明授权
    • Method for measuring characteristic constants of alternating current
motor and controller thereof based on said method
    • 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
    • US5475293A
    • 1995-12-12
    • US121896
    • 1993-09-16
    • Keijiro SakaiTsunehiro EndoToshiaki OkuyamaHiroshi Fujii
    • Keijiro SakaiTsunehiro EndoToshiaki OkuyamaHiroshi Fujii
    • H02P21/00H02P21/04H02P21/14H02P5/34
    • H02P21/04H02P21/16H02P21/34H02P2207/01
    • 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.
    • 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。