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21.发明公开Method for measuring characteristic constants of alternating current motor and controller thereof based on said method 失效基于所述方法测量交流电动机及其控制器的特性常数的方法
公开(公告)号：EP0588213A3
公开(公告)日：1994-11-23
申请号：EP93114332.5
申请日：1993-09-07
申请人： HITACHI, LTD.
CPC分类号： H02P21/04 , H02P21/16 , H02P21/34 , H02P2207/01
摘要： An inverter (4) corrects an output voltage by the magnitude of output voltage error due to a dead time and an ON-state voltage drop in power elements to energize an AC motor (5) in a manner of single phase alternating current excitation, calculating an active component of current Iq and a reactive component of current Id from the phase ϑ of an excitation voltage vector and a detected instantaneous current value iu, measuring characteristic constants of the motor, a combined resistance ( r₁ + r₂ ) and a combined leakage inductance ( l₁ + l₂ ) from an excitation voltage command value Vc₁, Id and Iq. The measured values are used as the control constants for a speed sensorless vector control (7). Further, the resistances r₁, r₂, and a self-inductance L₁ 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 π/2 delayed from the primary voltage vector direction of the primary current vector Id'. According to the present invention, the characteristic constants can accurately be measured without any inverter output voltage sensor.
摘要翻译： 逆变器（4）通过以单相交流励磁的方式对由交流电动机（5）通电的功率元件中的死区时间和接通状态电压降引起的输出电压误差的大小进行校正，计算 从激励电压矢量的相位θ和检测到的瞬时电流值iu中计算电流Iq的有功分量和电流Id的无功分量，测量电动机的特性常数，组合电阻（r1 + r2）和组合漏感 （I 1 + I 2）与励磁电压指令值Vc 1，Id和Iq相加。 测量值被用作无速度传感器矢量控制的控制常数（7）。 此外，可以基于初级电流矢量Iq'的初级电压矢量方向上的分量和从初级电压矢量延迟的分量π/ 2来获得作为控制常数的电阻r 1，r 2和自感L 1 主电流矢量Id'的方向。 根据本发明，可以在没有任何逆变器输出电压传感器的情况下准确地测量特性常数。
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公开(公告)号：EP0278369A2
公开(公告)日：1988-08-17
申请号：EP88101484.9
申请日：1988-02-02
申请人： HITACHI, LTD.
摘要： A converter circuit includes three-phase unit converters (2a, 2b) connected in cascade in two stages for supplying electric power to a load (4; 8). In a region in which the converter output voltage ratio is small, the firing phases of both converters are so set that a phase difference of 120° makes appearance therebetween, while in a region in which the converter output voltage ratio is large, the firing phases are so set as to have a phase difference of 60° therebetween, whereby an angular difference of 90° to 30° is caused to occur constantly between the phases of voltage ripple components of the unit converters. Power factor of a power supply source is improved while ripple in the output voltage of the converter circuit is reduced.
摘要翻译： A转换器电路包括三级单元转换器（2a，2b），其级联连接两级，用于向负载（4; 8）供电。 在转换器输出电压比小的区域中，两个转换器的点火相位设定为使120°的相位差出现，而在转换器输出电压比大的区域中，烧成阶段 被设定为具有60°的相位差，从而在单位转换器的电压纹波分量的相位之间恒定地发生90°至30°的角度差。 改善了电源的功率因数，同时降低了转换器电路输出电压的波动。
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公开(公告)号：EP0083945A2
公开(公告)日：1983-07-20
申请号：EP83100177.1
申请日：1983-01-11
申请人： Hitachi, Ltd.
发明人： Nagase, Hiroshi , Okuyama, Toshiaki
IPC分类号： H02P5/40
CPC分类号： H02P21/09
摘要： An induction motor (5) is driven by a converter (2, 4) which outputs a variable frequency and variable phase A.C. voltage. The frequency is instructed by a signal (I2 ° ) which corresponds to a difference signal between a detected speed signal and set speed signal, a signal which corresponds to a different signal (ΔΦ) between a detected magnetic flux intensity signal (Φ) and set signal (Φ'), and the detected speed signal.
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公开(公告)号：EP2246972B1
公开(公告)日：2015-06-10
申请号：EP10006721.4
申请日：2000-04-12
申请人： Hitachi, Ltd.
发明人： Tobari, Kazuaki , Okuyama, Toshiaki
CPC分类号： H02P21/04 , H02P21/18 , H02P21/24 , H02P21/26 , H02P2207/01
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公开(公告)号：EP1251631A2
公开(公告)日：2002-10-23
申请号：EP02007511.5
申请日：2002-04-02
申请人： Hitachi, Ltd.
发明人： Sakai, Keijirou , Okuyama, Toshiaki , Nakatsu, Kinya , Ishida, Seiji , Fujii, Hiroshi , Kato, Junji , Hiraga, Masahiro
CPC分类号： H02M1/4233 , H02M1/4216 , H02M2001/0012 , Y02B70/126
摘要： 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.摘要翻译： 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的状态，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，并且基于该值，控制PWM转换器，使得 提供电源功率因数为1的正弦波电源电流。
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公开(公告)号：EP1152520A2
公开(公告)日：2001-11-07
申请号：EP01109397.8
申请日：2001-04-19
申请人： Hitachi, Ltd.
发明人： Sakai, Keijiro , Okuyama, Toshiaki , Nakatsu, Kinya , Ishida, Seiji , Fujii, Hiroshi , Kato, Junji , Hiraga, Masahiro
IPC分类号： H02M7/48
CPC分类号： H02M7/48 , H02M7/53875 , H02P27/08
摘要： An inverter device in the present invention comprises a three-phase inverter (2) for converting DC electric power into AC power for supplement to an AC electric motor (3) and a control device (4 - 11) operatively associated therewith, and said control device includes a phase current detection section (7, 8) for outputting a phase current waveform based on a DC input current and an operational processor section (4 - 6, 10, 11) for performing based on said phase current waveform operational processing for control of said inverter device. Thereby, the inverter device can be constructed to be very compact.
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27.发明公开Method for measuring characteristic constants of alternating current motor and controller thereof based on said method 失效一种用于测量特征常数为交流电动机的方法，并且该方法基于控制器上。
公开(公告)号：EP0588213A2
公开(公告)日：1994-03-23
申请号：EP93114332.5
申请日：1993-09-07
申请人： HITACHI, LTD.
CPC分类号： H02P21/04 , H02P21/16 , H02P21/34 , H02P2207/01
摘要： An inverter (4) corrects an output voltage by the magnitude of output voltage error due to a dead time and an ON-state voltage drop in power elements to energize an AC motor (5) in a manner of single phase alternating current excitation, calculating an active component of current Iq and a reactive component of current Id from the phase ϑ of an excitation voltage vector and a detected instantaneous current value iu, measuring characteristic constants of the motor, a combined resistance ( r₁ + r₂ ) and a combined leakage inductance ( l₁ + l₂ ) from an excitation voltage command value Vc₁, Id and Iq. The measured values are used as the control constants for a speed sensorless vector control (7). Further, the resistances r₁, r₂, and a self-inductance L₁ 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 π/2 delayed from the primary voltage vector direction of the primary current vector Id'. According to the present invention, the characteristic constants can accurately be measured without any inverter output voltage sensor.
摘要翻译： 逆变器（4）由输出电压误差的大小来校正输出电压由于空载时间，并在功率元件导通状态的电压降在单相的方式激励的交流电动机（5）交流电激励，计算 电流Iq的活性组分和从激发电压矢量和所检测的瞬时电流值IU的相位THETA电流Id的无功分量，测量电机，合成电阻（R1 + R2）和组合的漏电感的特征常数的 从励磁电压指令值VC1，Id和Iq（L1 + L2）。 的测量值被用作一个速度传感器的矢量控制的控制常数（7）。 此外，termoresistencias R1，R2，和自感L1哪些是控制常数可基于在初级电流矢量IQ的初级电压矢量方向上的分量“和从初级电压矢量延迟分量Pi / 2相上获得 初级电流矢量ID”的方向。 。根据本发明，所述特征常数可以精确地组测量而没有任何逆变器输出电压的传感器。
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公开(公告)号：EP0117514B2
公开(公告)日：1992-08-12
申请号：EP84101815.3
申请日：1984-02-21
申请人： HITACHI, LTD.
发明人： Okuyama, Toshiaki
IPC分类号： H02P5/40
CPC分类号： H02P21/09 , H02P21/00 , H02P2207/01
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公开(公告)号：EP0278369A3
公开(公告)日：1989-03-15
申请号：EP88101484.9
申请日：1988-02-02
申请人： HITACHI, LTD.
摘要： A converter circuit includes three-phase unit converters (2a, 2b) connected in cascade in two stages for supplying electric power to a load (4; 8). In a region in which the converter output voltage ratio is small, the firing phases of both converters are so set that a phase difference of 120° makes appearance therebetween, while in a region in which the converter output voltage ratio is large, the firing phases are so set as to have a phase difference of 60° therebetween, whereby an angular difference of 90° to 30° is caused to occur constantly between the phases of voltage ripple components of the unit converters. Power factor of a power supply source is improved while ripple in the output voltage of the converter circuit is reduced.
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公开(公告)号：EP0105511B1
公开(公告)日：1988-01-13
申请号：EP83109859.5
申请日：1983-10-03
申请人： HITACHI, LTD.
发明人： Okuyama, Toshiaki
IPC分类号： H02P5/40
CPC分类号： H02P21/18 , H02P21/26 , H02P2207/01
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