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1. 发明专利

JP2008306904A Constant measuring device of linear induction machine 审中-公开
标题翻译：线性感应机恒定测量装置
公开(公告)号：JP2008306904A
公开(公告)日：2008-12-18
申请号：JP2007154462
申请日：2007-06-11
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KANEHARA YOSHIHIKO , KONO MASAKI , NAGATAKI YOSHIHIRO , TODA TATSUYA , OGAKE TADAO
IPC分类号： H02P25/06
摘要： PROBLEM TO BE SOLVED: To provide a constant measuring device of a linear induction machine by which an electric constant is measured for a short time by achieving a shutdown state when viewed from a primary circuit, without restraining a secondary conductor. SOLUTION: The constant measuring device 6a includes a control circuit, a current detector 7, and a constant calculation unit. The control circuit controls a state of the linear induction machine 1a having the primary circuit 3, the secondary conductor 4, and a back yoke 5 so that the secondary conductor 4 may become the shutdown state when observed from the primary circuit 3, by supplying an ac voltage to the primary circuit 3, wherein at least two phases among three phases have a reverse phase relation in a predetermined feed frequency. The current detector detects a current flowing through the primary circuit 3. The constant calculation unit calculates at least one of secondary resistance, primary inductance, and mutual inductance of the linear induction machine 1a, from relations among the feed frequency, a supply voltage and a current value detected by the current detector 7. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：提供一种线性感应电机的恒定测量装置，通过该线性感应电机的恒定测量，通过在从初级电路观察时实现关闭状态而不会抑制次级导体，从而短时间内测量电常数。
解决方案：恒定测量装置6a包括控制电路，电流检测器7和常数计算单元。控制电路控制具有主电路3，次级导体4和后磁轭5的线性感应电动机1a的状态，使得当从初级电路3观察时，次级导体4可能变为关闭状态，交流电压到主电路3，其中三相中的至少两相在预定馈电频率中具有反相位关系。电流检测器检测流过主电路3的电流。常数计算单元根据馈电频率，电源电压和电源电压之间的关系，计算线性感应电动机1a的二次电阻，初级电感和互感中的至少一个电流检测器7检测电流值。版权所有（C）2009，JPO＆INPIT

2. 发明专利

JP2005045973A Voltage type inverter 有权
标题翻译：电压型逆变器
公开(公告)号：JP2005045973A
公开(公告)日：2005-02-17
申请号：JP2003279504
申请日：2003-07-25
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： NAGATAKI YOSHIHIRO , KINOSHITA MASAHIRO
IPC分类号： H02M7/48 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide an inexpensive inverter capable of driving an induction motor without stopping the device at the time of instantaneous power failure without need for providing a DC voltage detector. SOLUTION: A power failure detector 6 detects the instantaneous power failure of a three-phase AC power supply 1, and a switch 11 is immediately closed through a judging device 9. The voltage of an inverter unit 4 is controlled so that A power computing unit 15 obtains the power P of an induction motor (IM) 5 from the voltage of a phase voltage reference signal generator 13 and the current of IM5 detected by current detectors 14a to 14 c. A deviation detector 16 obtains a deviation ΔP between the power P and a power command value Ps (=0), and the deviation ΔP is used as a torque command T through a divider 17. An integrator 18 integrates the torque command T in consideration of inertia energy of the IM5, and the amount of frequency collection ωs is outputted to an accumulator 20 through the switch 11, and the accumulator 20 adds the amount of frequency collection ωs and a speed command ωr to obtain an output frequency command ωo, so that the voltage of an inverter unit 4 is controlled. Consequently, the IM5 is transferred to regenerative running and the DC voltage is not lowered, thus continuing to operate the induction motor 5. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种廉价的逆变器，其能够在瞬时断电时不停止该装置来驱动感应电动机，而不需要提供直流电压检测器。解决方案：电源故障检测器6检测三相交流电源1的瞬时电源故障，开关11通过判断装置9立即闭合。控制逆变器单元4的电压使得A 电力计算单元15从相电压参考信号发生器13的电压和由电流检测器14a至14c检测的IM5的电流获得感应电动机（IM）5的功率P。偏差检测器16获得功率P和功率指令值Ps（= 0）之间的偏差ΔP，通过分压器17将偏差ΔP用作转矩指令T.积分器18考虑到转矩指令T IM5的惯性能量和频率采集量ωs通过开关11输出到蓄电器20，并且累加器20将频率采集量ωs和速度指令ωr相加以获得输出频率指令ωo，使得控制逆变器单元4的电压。因此，IM5转移到再生运行，直流电压不降低，从而继续操作感应电动机5.版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JPH04317592A CONTROLLER FOR INVERTER 失效
公开(公告)号：JPH04317592A
公开(公告)日：1992-11-09
申请号：JP10963191
申请日：1991-04-16
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAGATAKI YOSHIHIRO
IPC分类号： H02M7/48 , H02P27/06
摘要： PURPOSE:To operate to momentarily generate an AC motor, and to avoid a stop of an operation of an inverter by maintaining the voltage of a DC circuit by delaying a sine wave signal for detecting a momentary stop at a voltage phase by a voltage phase controller, and applying a scalar amount and phase of a frequency correction amount to the inverter. CONSTITUTION:Phases of a voltage and a current are detected by a phase detector 14 so that a 3-phase AC motor 5 momentarily generates at the time of momentary stop, and only a phase in which a sine wave signal waveform 19 generated at the momentary time for detecting the stop by a PWM oscillator 13 is detected, is delayed. A leading current is momentarily supplied to a smoothing condenser 4, a generating operation is rapidly conducted to maintain the voltage of a DC circuit constant. Thus, in the case of a power interruption, the operation can be continued.

4. 发明专利

JP2002034290A CONTROLLING DEVICE OF INDUCTION MOTOR 失效
公开(公告)号：JP2002034290A
公开(公告)日：2002-01-31
申请号：JP2000218462
申请日：2000-07-19
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAGATAKI YOSHIHIRO , KOYAMA MASATO , KURAMOTO YUJI
IPC分类号： H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To obtain a controlling device that stably operates an induction motor by an inverter without using any speed detectors. SOLUTION: The input current of an inductor motor is detected, the input current is subjected to 3ϕ/2ϕ conversion for calculating the torque content current of the induction motor by a 3ϕ/2ϕ converter 12, the vibration constituent of the torque content current is taken out by a high-pass filter according to the torque content current calculated by the 3ϕ/2ϕ converter 12, the amount of frequency correction is calculated according to the vibration constituent at a gain operation part, the amount of frequency correction is subtracted from a frequency command inputted from the outside for calculating an output frequency command. a voltage command value corrected by the amount of frequency correction based on the frequency command and is outputted, three- phase voltage reference is outputted based on the voltage command value and output frequency command for controlling the output of an inverter 7, and vibration is inhibited and controlled for stable operation.

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