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121. 发明专利

JP2003023800A Motor controller and method of motor control 审中-公开
标题翻译：电机控制器及电机控制方法
公开(公告)号：JP2003023800A
公开(公告)日：2003-01-24
申请号：JP2001206404
申请日：2001-07-06
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KANEKO SATORU , MASAKI RYOZO , MOTOBE MITSUSACHI , KATAYAMA HIROSHI , SAWADA TAKEFUMI
IPC分类号： B60L15/20 , H02P6/16 , H02P21/00 , H02P27/04
CPC分类号： B60L11/1803 , B60L15/025 , Y02T10/643 , Y02T10/7005 , Y02T10/7258
摘要： PROBLEM TO BE SOLVED: To provide a high speed and high response position-sensorless controller utilizing an arithmetic unit, such as a microcomputer. SOLUTION: This motor controller comprises an AC motor 1, a PWM inverter for applying voltage to the AC motor 1 and a controller 4 for controlling the PWM inverter with the PWM signal. Moreover, the controller 4 comprises a first arithmetic unit 5, including a current controlling means for controlling the current of the AC motor 1 and a second arithmetic unit 6 which includes a magnetic pole detecting means for detecting rotor magnetic pole position of the AC motor, which becomes the reference position of the current control means.
摘要翻译：要解决的问题：提供使用诸如微计算机的运算单元的高速和高响应位置无传感器控制器。解决方案：该电动机控制器包括AC电动机1，用于向AC电动机1施加电压的PWM逆变器和用于利用PWM信号控制PWM逆变器的控制器4。此外，控制器4包括第一运算单元5，其包括用于控制交流电动机1的电流的电流控制装置和包括用于检测交流电动机的转子磁极位置的磁极检测装置的第二运算单元6，其变为当前控制装置的参考位置。

122. 发明专利

JP2001169590A MOTOR CONTROL DEVICE 失效
公开(公告)号：JP2001169590A
公开(公告)日：2001-06-22
申请号：JP34294399
申请日：1999-12-02
申请人： HITACHI LTD
发明人： MASAKI RYOZO , KANEKO SATORU , OBARA SANSHIRO , MOTOBE MITSUSACHI , SAKURAI YOSHIMI
IPC分类号： H02P21/00 , H02P6/06 , H02P6/08 , H02P6/16 , H02P21/18 , H02P21/22 , H02P21/24 , H02P27/04 , H02P27/08
摘要： PROBLEM TO BE SOLVED: To provide a motor control device with control characteristics with improved response without any magnetic pole position sensor in a control system for controlling a synchronous motor. SOLUTION: In a configuration with a power converter 2 for applying a voltage to an AC motor 1 and a control device 4 for calculating a voltage command being applied with PWM signals, detection voltages Vup, Vvp, and Vwp are applied in synchronization with a carrier for generating the PWM signal of the control device 4, and at the same time motor currents iu and iv are detected with a current detection pulse Pd in synchronization with the detection voltages. At a magnetic pole detection part 12, back electromotive force of the synchronous motor 1 is estimated from the relationship between the detection voltages Vup, Vvp, and Vwp and the current differential vector of the motor current, and a magnetic pole position θ is obtained by operation. The magnetic pole position θ is inputted to coordinates conversion parts 8 and 11, and a motor speed detection part 13.

123. 发明专利

JPH11332293A CONTROL DEVICE OF VARIABLE SPEED GENERATION SYSTEM 失效
公开(公告)号：JPH11332293A
公开(公告)日：1999-11-30
申请号：JP13795898
申请日：1998-05-20
申请人： HITACHI LTD
发明人： KUBOTA YUZURU , FUTAMI MOTOO , ICHINOSE MASAYA , MOTOBE MITSUSACHI , MAOKA AKIHIRO
IPC分类号： F03B15/04 , H02P9/00
摘要： PROBLEM TO BE SOLVED: To achieve stable control on system operation, by switching a current control gain according to a plurality of operation states of a variable speed generation system by giving a switch instruction to a power converter for excitation so that the rotor coil current matches a current instruction. SOLUTION: The modulation wave signal of a field current controller 32 is compared with a carrier signal by a gate pulse generator 41, and a PWM pulse signal that is obtained by the comparison result is fed to an inverse converter 40 as a power converter as a switch instruction. Then, d and q-axis current instructions Ids* and Iqs* for self starting are inputted to the field current controller 32 for switching a current control gain according to a plurality of operation states of a variable speed generation system, thus achieving stable control without depending on such operation conditions as self start and system operation, and obtaining the optimum effective power or reactive power control of the variable generation electric motor.

124. 发明专利

JPH09149647A CONTROLLER OF CONVERTER 失效
公开(公告)号：JPH09149647A
公开(公告)日：1997-06-06
申请号：JP32971395
申请日：1995-11-24
申请人： HITACHI LTD
发明人： KUBOTA YUZURU , MOTOBE MITSUSACHI , FUTAMI MOTOO , MIYAZAKI KIYOKO
IPC分类号： H02P27/06 , H02M7/12 , H02M7/155 , H02P27/08 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To recover a DC voltage quickly after an instantaneous service interruption by a method wherein, if the DC voltage drops by the instantaneous interruption, the gate blocking of the PWM signal of a converter is performed and, if a power supply voltage is recovered, the pulse width control of the gate group of the converter is performed. SOLUTION: If a service interruption detector 21 is operated by an instantaneous service interruption and a DC voltage Ed drops below a predetermined value, a gate blocking judging device 25 is operated and a switching instruction SW1 is blocked. On the other hand, if a power supply is recovered from the interruption, a recovery detector 22 is operated and the DC voltage Ed rises above the predetermined value, a DC voltage detector 24 is operated and a gate deblocking judging device 26 is operated for deblocking. Further, if, by the recovery of the power supply, the output of the recovery detector 22 is inputted to a gate pulse judging device 29 to turn on the gate, the output of a pulse generator 28 is given to a gate controller 30 and, in accordance with the pulse command, the pulse width control of the P-type switching device group or the N-type switching device group is performed. As a result, the DC voltage can be recovered quickly.

125. 发明专利

JP2585739B2 失效
公开(公告)号：JP2585739B2
公开(公告)日：1997-02-26
申请号：JP19990488
申请日：1988-08-12
申请人： HITACHI LTD
发明人： UEDA SHIGETA , MOTOBE MITSUSACHI , PPONDA KAZUO , MORINAGA DAISAKU
IPC分类号： H02M7/48

126. 发明专利

JPH08111979A CONTROLLER FOR POWER CONVERTER 失效
公开(公告)号：JPH08111979A
公开(公告)日：1996-04-30
申请号：JP24365194
申请日：1994-10-07
申请人： HITACHI LTD
发明人： MIYAZAKI KIYOKO , FUTAMI MOTOO , KUBOTA YUZURU , MOTOBE MITSUSACHI
IPC分类号： H02H7/122 , H02M7/12 , H02M7/155 , H02P27/06 , H02P7/63
摘要： PURPOSE: To continue stable control during the period during which an excessively large current flows and thereafter by not breaking the electric current of the same phase as that in which an electric current larger than the ability of a breaking current flows and correcting the gate pulse command of gate pulses of another phase based on the gate pulses. CONSTITUTION: The absolute value circuit 104 of a gate drive circuit 10 converts a current detecting value I into an absolute current value signal and a comparator 103 outputs the gate pulse holding signal (HOLD) of '1' when the absolute current value signal is larger than a breaking current level signal LV. When the HOLD becomes '1', a hold circuit 101 holds the output immediately before the HOLD becomes '1' and a gate pulse signal G does not change even when a gate pulse command S which is an input signal changes. During the period during which a gate pulse command SU is different from a gate pulse signal GU, the command SH is changed by stopping the updating of the command SU and the gate pulse signal G of another phase which is not controlled by a gate pulse holding signal HOLDU is corrected.

127. 发明专利

JPH0822145B2 失效
公开(公告)号：JPH0822145B2
公开(公告)日：1996-03-04
申请号：JP12024484
申请日：1984-06-12
申请人： HITACHI LTD
发明人： UEDA SHIGETA , MOTOBE MITSUSACHI , UEDA AKITERU , PPONDA KAZUO , SUZUKI KATSUNORI
IPC分类号： H02M7/155 , H02M7/219 , H02M7/48 , H02M7/505

128. 发明专利

JPH07337026A PWM CONTROLLER 失效
公开(公告)号：JPH07337026A
公开(公告)日：1995-12-22
申请号：JP13008294
申请日：1994-06-13
申请人： HITACHI LTD
发明人： KUBOTA YUZURU , MOTOBE MITSUSACHI , FUTAMI MOTOO , MIYAZAKI KIYOKO
IPC分类号： H02M1/08 , H02M7/48 , H02P27/06 , H02P7/63
摘要： PURPOSE:To operate a PWM control power converter stably by generating a carrier signal having no distortion in the waveform in a carrier synchronization system for controlling a modulated wave signal and a carrier signal synchronously. CONSTITUTION:In the PWM converter 1 for controlling a carrier signal and a modulated wave signal synchronously, the carrier signal is generated based on a correction signal phi operated from voltage commands Vd*, Vq* for controlling a sync signal theta of an AC power supply 3 and an input voltage vector of the PWM converter 1 wherein ripples are removed from the correction signal phithrough a filter circuit 19. This constitution realizes efficient and stabilized operation of a power converter while suppressing the higher harmonics.

129. 发明专利

JPH05344708A 失效
公开(公告)号：JPH05344708A
公开(公告)日：1993-12-24
申请号：JP15037192
申请日：1992-06-10
申请人： HITACHI LTD
发明人： IYOTANI RYUJI , UEDA AKITERU , NARITA HIROSHI , MOTOBE MITSUSACHI , AIZAWA HIDETOSHI
IPC分类号： H02J7/34 , H02M1/08 , H02M1/088 , H02M7/757 , H03K17/00 , H03K17/0814
摘要： PURPOSE:To realize the miniaturization of a gate driver and the conservation of power by parallel-connecting DC power supply and auxiliary power supply for supplying power to respective gate drive circuits in a power converter formed by the series connection of a plurality of self-extinction of arc-type semiconductor switching elements. CONSTITUTION:When the title apparatus is put into operation in a three-phase voltage-type inverter, a plurality of self-extinction of arc-type semiconductor switching elements, e.g. GTOs, are respectively connected in series with six arms 101-106. That is, n GTOs 1a-1n are serially connected with respective arms (only the U-phase positive-side arm 101 is specified in the drawing) and peripheral circuits 40a-40n annexed to respective GTOs are provided with regenerating circuits 10a with output sides connected with both ends of smoothing capacitors 3a, DC-DC converters 30, gate drive circuits 12a, etc., and auxiliary power supplies 11 such as batteries are connected with the input terminals of the gate drive circuits 12a. Further, a plurality of smoothing capacitors 3a are connected in series between the positive side terminal P and negative side terminal N of the DC power supply and the intermediate point E is earthed.

130. 发明专利

JPH04121065A CONTROL METHOD FOR POWER CONVERTER, POWER CONVERTER EMPLOYING THE CONTROL METHOD AND ROLLING CONTROL SYSTEM 失效
公开(公告)号：JPH04121065A
公开(公告)日：1992-04-22
申请号：JP23767190
申请日：1990-09-07
申请人： HITACHI LTD
发明人： IKUN TAKASHI , MOTOBE MITSUSACHI , KUBOTA YUZURU , TOBARI KAZUAKI , SAKAI KEIJIRO , KAMIYAMA KENZO , TAKAHASHI JUNICHI
IPC分类号： H02M7/21 , H02M7/12 , H02M7/48 , H02P27/08
摘要： PURPOSE:To improve the stability of voltage and current control by a method wherein same signals are employed as the carrier signals of the pulse width modulation(PWM) control of a converter and inverter or reference signals equiva lent to the carrier signals. CONSTITUTION:A converter control circuit 7 and an inverter control circuit 8 perform PWM control by using the output of a same carrier output means 9 as the carrier signal of the PWM control. That is, a carrier which is the reference signal of the PWM control of the converter 3 is commonly used as a carrier which is the reference signal of the PWM control of the inverter 5. Therefore, the phase of the ripple current of the converter 3 can be matched with the phase of the ripple current of the inverter 5 and hence a current flowing into a smoothing capacitor 4 can be reduced. With this constitution, the ripple of the DC part voltage can be reduced, so that the stability of voltage and current control can be improved.

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