专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH0569229A POWER SUPPLY FOR ELECTRIC DISCHARGE MACHINING 失效
公开(公告)号：JPH0569229A
公开(公告)日：1993-03-23
申请号：JP4962192
申请日：1992-03-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAITANI TOSHIYUKI , ADACHI TOSHIHARU
IPC分类号： B23H1/02
摘要： PURPOSE:To prevent a switching element from being damaged by variation in diode backward recovering phenomena and time in a power supply for electric discharge machining. CONSTITUTION:A diode 12, whose backward recovery time is shorter than that of diodes 8, 9 constituting a return circuit, is placed in series with a work 5 and with a electrode 4 in such a manner that its direction coincides with that of the electric current from a d.c. power circuit 1 at the time when switching elements 6, 7 are turned ON.

2. 发明专利

JP2010279095A Sensorless control device for ac electric motors 有权
标题翻译：交流电动机的无传感控制装置
公开(公告)号：JP2010279095A
公开(公告)日：2010-12-09
申请号：JP2009126526
申请日：2009-05-26
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： TERADA HIROSHI , KANEHARA YOSHIHIKO , OGI HIDEMASA , KAITANI TOSHIYUKI , YAMAGUCHI KATSUYA
IPC分类号： H02P21/00 , H02P6/18 , H02P27/04 , H02P27/06
摘要： PROBLEM TO BE SOLVED: To provide a sensorless control device for AC electric motors wherein it is possible to accurately control speed and torque by closed-loop speed control and q-axis current control in a high-speed range, improve dumping by stopping the operation of the q-axis current loop in a low-speed range, and suppress vibration at constant speed and at a stop. SOLUTION: In the sensorless control device, a speed controller 3 outputs an F/Bq-axis current command from estimated speed and F/F speed. A speed control output switching device 7 outputs an F/B-axis current command in the high-speed range of a motor and outputs a predetermined fixed value C1 in the low-speed range. Both dq-axis current controllers 10, 9 carry out current control and output an F/Bdp-axis voltage command. A q-axis current control output switching device 12 outputs an F/Bq-axis voltage command in the high-speed range of the motor and outputs a predetermined fixed value C2 in the low-speed range. A voltage coordinate transformation unit 14 transforms a dp-axis voltage command to generate a three-phase voltage command. A current coordinate transformation unit 17 transforms the current of the motor 16 and outputs a dq-axis current. A speed estimation unit 6 generates an estimated speed from a dp-axis current and a dq-axis voltage command. COPYRIGHT: (C)2011,JPO&INPIT
摘要翻译：要解决的问题：为了提供一种用于交流电动机的无传感器控制装置，其中可以通过闭环速度控制和高速范围内的q轴电流控制来精确地控制速度和转矩，通过在低速范围内停止q轴电流回路的动作，抑制恒速和停止时的振动。解决方案：在无传感器控制装置中，速度控制器3从估计速度和F / F速度输出F / Bq轴电流指令。速度控制输出切换装置7在电动机的高速范围内输出F / B轴电流指令，并在低速范围内输出规定的固定值C1。 dq轴电流控制器10,9都执行电流控制并输出F / Bdp轴电压指令。 q轴电流控制输出切换装置12在电动机的高速范围内输出F / Bq轴电压指令，并在低速范围内输出规定的固定值C2。电压坐标变换部14变换dp轴电压指令，生成三相电压指令。当前坐标变换单元17转换电动机16的电流并输出dq轴电流。速度估计单元6根据dp轴电流和dq轴电压指令产生估计速度。版权所有（C）2011，JPO＆INPIT

3. 发明专利

JP2000092891A MAGNETIC POLE POSITION DETECTOR FOR SYNCHRONOUS MOTOR 失效
公开(公告)号：JP2000092891A
公开(公告)日：2000-03-31
申请号：JP26269498
申请日：1998-09-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： KANEHARA YOSHIHIKO , MAEZAWA HARUMI , KAITANI TOSHIYUKI
IPC分类号： H02P23/00 , H02P21/34 , H02P7/36
摘要： PROBLEM TO BE SOLVED: To enable detection with a low price computer and control of generated error by calculating sum of amplitudes of a pair of current pulses in different polarities for each phase with a calculating means to which amplitude of current pulse is inputted and then outputting the reference magnetic pole position, based on such calculated value. SOLUTION: A calculating means 2a outputs, to a circuit means 1, a voltage command to generate a pair of voltage pulses in different polarities in each phase U, V, W to a circuit means 1, and also outputs a trigger signal synchronized with the voltage command to the detecting means 4. Here, the calculating means 2a obtains amplitudes of a pair of current pulses in different polarities for each phase U, V, W, based on the amplitude of current pulse obtained from the detecting means 4. Any one is outputted as the reference magnetic polarity position θ, based on the sum of amplitude which mutually becomes maximum. As a result, a low price computer can be used and an error, if caused by mixture of noise, can be controlled.

4. 发明专利

JPH0866024A CONTROL CIRCUIT FOR DC/DC CONVERTER 失效
公开(公告)号：JPH0866024A
公开(公告)日：1996-03-08
申请号：JP19423894
申请日：1994-08-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： TAMURA SHIZUSATO , ADACHI TOSHIHARU , KAITANI TOSHIYUKI
IPC分类号： H02M3/28
摘要： PURPOSE: To reduce the proportional gain sufficiently in PI control by controlling the input to a switching element drive circuit depending on the difference of output between a second secondary winding and an error amplifier circuit in the proportional integration control so that fluctuation in the DC output voltage has no effect on the input to the switching element. CONSTITUTION: In the proportional integration control, input to the drive circuit 3 for a switching element 2 is controlled depending on the difference between the output from an error amplifier circuit, being fed with an input depending on the output from the first secondary winding of an output transformer, and the output from the second secondary winding of the output transformer 1. Since a mechanism for producing a drive signal based on the differential voltage V between the DC output voltage P5 from a winding 20 dedicated for constant voltage and the output voltage from the error amplifier circuit is provided, the control circuit can decrease the proportional gain below 0 dB while performing PI control and means for imparting margin in the phase can be eliminated along with the adverse effect thereof.

5. 发明专利

JP2006197771A Inverter with magnetic pole position detecting function 有权
标题翻译：具有磁性位置检测功能的逆变器
公开(公告)号：JP2006197771A
公开(公告)日：2006-07-27
申请号：JP2005009213
申请日：2005-01-17
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： YOSHIMURA MANABU , KAITANI TOSHIYUKI
IPC分类号： H02P6/18
摘要： PROBLEM TO BE SOLVED: To provide an inverter with a magnetic pole position detecting function, capable of detecting magnetic pole position of a synchronous motor to be controlled with no use of an expensive element such as CT. SOLUTION: An inverter circuit 3 with current detecting function has shunt resistors Ru, Rv, and Rw connected respectively to lower ends of lower arm parts 8, 9, and 10 constituting a pair of arm parts connected respectively to each phase of a synchronous motor 4 whose magnetic pole position is to be detected. When the currents flowing each phase of the synchronous motor 4 are detected by the shunt resistors Ru, Rv, and Rw respectively, such period as all switching elements Q4, Q5, and Q6 of the lower arm parts 8, 9, and 10 are turned on is provided. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供具有磁极位置检测功能的逆变器，能够检测不使用诸如CT的昂贵元件来控制的同步电动机的磁极位置。解决方案：具有电流检测功能的逆变器电路3具有分别连接到下臂部分8,9和10的下端的分流电阻器Ru，Rv和Rw，它们分别连接到一个臂部分要检测磁极位置的同步电动机4。当分流电阻器Ru，Rv和Rw分别检测到流过同步电动机4的各相的电流时，如下部臂部件8,9和10的所有开关元件Q4，Q5和Q6都被转动提供。版权所有（C）2006，JPO＆NCIPI

6. 发明专利

JPH1042575A INVERTER DEVICE 失效
公开(公告)号：JPH1042575A
公开(公告)日：1998-02-13
申请号：JP19372496
申请日：1996-07-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAITANI TOSHIYUKI , OGAMI MASAKATSU , YAMADA TAKASHI
IPC分类号： H02M7/5387
摘要： PROBLEM TO BE SOLVED: To prevent a high withstand voltage IC for driving a switching element from being destroyed at the time of large-current driving. SOLUTION: A clamp diode 110 is connected between an upper arm switching element driving signal reference output terminal VS1 and a lower arm switching element driving signal reference output terminal VS0 of a high withstand voltage IC100. The clamp diode 110 turns on, only when the voltage V (VS1-VS0) between the upper and the lower reference output terminals VS1, VS0 is negative, to keep the voltage (VS1-VS0) at the on-voltage of the clamp diode 110. The negative voltage, which results in the destruction of the high withstand voltage IC generated by the small inductance of the pattern of a diode tip or the wiring of a current detector, is clamped by the clamp diode. Therefore, it is possible to prevent the high withstand voltage IC from being destroyed.

7. 发明专利

JPH02293074A POWER SOURCE DEVICE FOR ULTRASONIC VIBRATOR 失效
公开(公告)号：JPH02293074A
公开(公告)日：1990-12-04
申请号：JP11551689
申请日：1989-05-09
申请人： MITSUBISHI ELECTRIC CORP
发明人： KAITANI TOSHIYUKI
IPC分类号： B06B1/06
摘要： PURPOSE:To improve operability by detecting the error signal between the set signal and the excitation frequency command signal of the ultrasonic vibrator by an exciting means and exciting the vibrator with the excitation frequency corresponding to the error signal. CONSTITUTION:A positive DC voltage signal denoting the output current detected by a current detector 5 is inputted, and a potentiometer 14 corresponding to a setting means for fractionating in a ratio corresponding to the change in the resonance frequency due to the change of the output current is provided. The difference between the input from the potentiometer 14 and the output from a frequency command device 2 is detected by a difference detector 15, and the difference V/F is outputted to a transmitter 3. The exciting means consists of the V/F transmitter 3, a multiplier 7, a power amplifier 8 and the difference detector 15. The ultrasonic vibrator is excited at the excitation frequency corresponding to the error signal, and operability is improved.

8. 发明专利

JP2005184905A Inverter device 有权
标题翻译：逆变器装置
公开(公告)号：JP2005184905A
公开(公告)日：2005-07-07
申请号：JP2003418948
申请日：2003-12-17
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAITANI TOSHIYUKI , MIKAMI NOBUHIRO
IPC分类号： H02P1/30 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To obtain an inverter device which has instantaneous power interruption restarting function, and which is small-sized, a low cost and has high reliability. SOLUTION: The inverter device includes a control circuit 9 for controlling ON/OFF of main circuit switching elements T1-T6, a first bus bar 4 connected only to switching elements T4, T5 and T6 of the lower arm of a DC bus bar N, a current-detecting means 6 for separating to a second bus bar 5 connected only to diodes D4, D5 and D6 and detecting the current of the switching element flowing to the first bus bar 4, and a current direction discriminating means 8 for detecting the current direction of the output current. The control circuit 9 turns ON only the switching elements T4, T5 at the starting time, and calculates the rotating information of an induction motor 3 from the detection current outputted from the current-detecting means 6 and the output signal outputted from the current direction discriminating means 8. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：获得具有瞬时断电重启功能的小型化，低成本且高可靠性的逆变器装置。解决方案：逆变器装置包括用于控制主电路开关元件T1-T6的导通/截止的控制电路9，仅连接到直流母线的下臂的开关元件T4，T5和T6的第一母线4 条N，用于分离到仅连接到二极管D4，D5和D6的第二母线5并检测流到第一母线4的开关元件的电流的电流检测装置6，以及用于检测输出电流的当前方向。控制电路9在开始时间仅接通开关元件T4，T5，根据从电流检测单元6输出的检测电流和从电流方向判别输出的输出信号，计算感应电动机3的旋转信息意味着8.版权所有（C）2005，JPO＆NCIPI

9. 发明专利

JP2004173496A Controller for induction motor 有权
公开(公告)号：JP2004173496A
公开(公告)日：2004-06-17
申请号：JP2004010578
申请日：2004-01-19
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KAITANI TOSHIYUKI , NAGANO TETSUAKI , IMANAKA AKIRA , SHIRAISHI YASUHIRO
IPC分类号： H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To improve control performance, by reducing an error due to approximating mutual inductance of a circuit to be open. SOLUTION: The inductive motor controller comprises a power arithmetic means for calculating effective power P and reactive power Q corresponding to a test power source of frequency f; a first arithmetic means for obtaining secondary resistance R2d and secondary leakage inductance L2d from an operation expression obtained by an L-type equivalent circuit, from a phase voltage peak value Vp and a primary angular frequency ω corresponding to the frequency f, the effective power P and the reactive power Q, and previously measured primary resistance R1; and a second arithmetic means for obtaining secondary resistance R2 and secondary leakage inductance L by substituting the secondary resistance R2d and the secondary leakage inductance L2d, obtained by the first arithmetic means and previously measured secondary self inductance LL2 for each of operation expressions of secondary resistance R2 and secondary leakage inductance L obtained by a T-type equivalent circuit. COPYRIGHT: (C)2004,JPO

10. 发明专利

JP2003302413A Speed estimation device for rotating machine 审中-公开
标题翻译：旋转机速度估算装置
公开(公告)号：JP2003302413A
公开(公告)日：2003-10-24
申请号：JP2002105429
申请日：2002-04-08
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： KANEHARA YOSHIHIKO , KAITANI TOSHIYUKI , KONO MASAKI
IPC分类号： G01P3/44 , H02P5/00 , H02P21/00 , H02P23/00 , H02P27/04 , H02P29/00 , H02P5/28
摘要： PROBLEM TO BE SOLVED: To provide a speed estimation device for a rotating machine with improved stationary state accuracy and preventing mixing of noises. SOLUTION: The speed estimation device comprises a model deviation calculation means 2 which calculates a model deviation based on a voltage, a current and an estimated rotating angular velocity of the rotating machine, a rotating angular acceleration calculation means 10 which calculates an estimated rotating angular acceleration based on the model deviation, and a rotating angular velocity calculation means 11 which calculates an estimated rotating angular velocity based on the estimated rotating angular acceleration, outputs and feedbacks the estimated rotating angular acceleration to the model deviation calculation means 2. Thereby the stationary state accuracy of the device is improved and mixing of noises is prevented. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种具有改善的静止状态精度并防止噪声混合的旋转机器的速度估计装置。解决方案：速度估计装置包括：模型偏差计算装置2，其基于旋转机器的电压，电流和估计的旋转角速度计算模型偏差;旋转角加速度计算装置10，其计算估计的基于模型偏差的旋转角加速度，以及基于估计的旋转角加速度来计算推定旋转角速度的旋转角速度计算单元11输出并将估算出的旋转角加速度反馈给模型偏差运算单元2.由此，提高了器件的静态精度，防止了混合噪声。版权所有（C）2004，JPO

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式