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1. 发明专利

JP2002238263A CONTROL DEVICE FOR PWM CONVERTER WITH ZERO-PHASE CURRENT CONTROL FUNCTION 失效
公开(公告)号：JP2002238263A
公开(公告)日：2002-08-23
申请号：JP2001036737
申请日：2001-02-14
申请人： RAILWAY TECHNICAL RES INST , TOYO ELECTRIC MFG CO LTD
发明人： MURAI TOSHIAKI , YAMAMOTO TAKAMITSU , HASEGAWA HITOSHI , SHIODA TAKESHI , TANAKA TAKAYOSHI , SANO TAKASHI
IPC分类号： G05F1/00 , H02M7/493 , H02M7/497 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To realize magnetic damping with a collector coil and obtain attraction force by a propulsion coil, for example, in a magnetic levitation railroad by controlling zero-phase current flowing through polyphase load (power supply). SOLUTION: A PWM converter 1 is constituted of single-phase PWM converters 31 to 33 which have a common DC part 2 and the same number of phases as that of phases, and the single-phase PWM converters are respectively connected to insulated single-phase loads. A zero-phase voltage command value Vo* is generated based on a zero-phase current command value Io* and an actual zero-phase current value or a zero-phase voltage drop value; the zero-phase voltage command value Vo* and voltage command values Vmu*, Vmv*, Vmw* of controlling single-phase load of the respective phases are added, and voltage command values Vcu*, Vcv*, Vcw* of the respective single-phase PWM converters are determined to PWM-control the respective single-phase PWM converters 31 to 33.

2. 发明专利

JP2001298960A SEMICONDUCTOR DEVICE ON-STATE VOLTAGE CORRECTION CIRCUIT OF SINGLE-PHASE PWM CONVERTER 失效
公开(公告)号：JP2001298960A
公开(公告)日：2001-10-26
申请号：JP2000112884
申请日：2000-04-14
申请人： TOYO ELECTRIC MFG CO LTD , RAILWAY TECHNICAL RES INST
发明人： SHIODA TAKESHI , SANO TAKASHI , TANAKA TAKAYOSHI
IPC分类号： H02M7/48 , H02M7/5387
摘要： PROBLEM TO BE SOLVED: To solve a problem associated with conventional single-phase PWM converters that an output voltage in accordance with an output voltage command cannot be obtained due to influences of the ON-state voltage of a semiconductor device. SOLUTION: The ON-state voltage correction circuit comprises an output voltage command computation circuit, a semiconductor device ON-state voltage output circuit, a current sign judgment circuit, a circuit that outputs an correction voltage value according to the current sign and the semiconductor device ON-state voltage, and a circuit that outputs the difference between the output voltage command and the correction voltage value as a correction output voltage command, and thereby the gate of a single-phase PWM converter is controlled.

3. 发明专利

JP2005168254A Output and phase control method for converter 有权
标题翻译：转换器的输出和相位控制方法
公开(公告)号：JP2005168254A
公开(公告)日：2005-06-23
申请号：JP2003406876
申请日：2003-12-05
申请人： Railway Technical Res Inst , Toyo Electric Mfg Co Ltd , 東洋電機製造株式会社 , 財団法人鉄道総合技術研究所
发明人： MURAI TOSHIAKI , KASHIWAGI TAKAYUKI , YAMAMOTO TAKAMITSU , HASEGAWA HITOSHI , SANO TAKASHI , TANAKA TAKAYOSHI
IPC分类号： B60M7/00 , H02M7/00 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide an output and phase control method for a converter capable of obtaining good output characteristics by directly controlling an output with an expression proportional to DC power, thus eliminating conventional interference between output control and phase control of the converter.
SOLUTION: In this output and phase control method for the converter, 1/K=R
c /Z
2 proportional to a DC power P is PI controlled directly by the output. An equivalent resistance R
c and an equivalent inductance L
c of the converter are determined from a gain K and a phase command value ϕ in an output control system and an AC circuit impedance expression to restrain fluctuations in DC power during driving the converter. A reference symbol Z is an impedance for the whole AC circuit.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种能够通过以与直流电力成比例的方式直接控制输出来获得良好的输出特性的转换器的输出和相位控制方法，从而消除了输出控制和相位控制之间的常规干扰转换器。解决方案：在该转换器的输出和相位控制方法中，与直流电源P成比例的1 / K = R c / Z 2 是直接由输出。根据输出控制系统中的增益K和相位指令值φ确定转换器的等效电阻R c 和等效电感L c ，并且AC电路阻抗表达式可以抑制驱动转换器时直流电源的波动。参考符号Z是整个交流电路的阻抗。版权所有（C）2005，JPO＆NCIPI

4. 发明专利

JP2001268923A ON-VOLTAGE CORRECTION CIRCUIT FOR SEMICONDUCTOR ELEMENT 失效
公开(公告)号：JP2001268923A
公开(公告)日：2001-09-28
申请号：JP2000074100
申请日：2000-03-16
申请人： TOYO ELECTRIC MFG CO LTD , RAILWAY TECHNICAL RES INST
发明人： SHIODA TAKESHI , TANAKA TAKAYOSHI , OYAMA YUJI
IPC分类号： H02M7/12 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To solve the problem due to the fact that an output voltage is not obtained in accordance with a phase voltage command by the effect of the on-voltage of a switching element in a three-phase PWN conveter. SOLUTION: This correction circuit consists of a phase voltage command output circuit, a switching element on-voltage output circuit, a current does discriminating circuit, a circuit for outputting a correction voltage value with the current code and switching element turned on, and a circuit of outputting a difference between the phase voltage command and the correction voltage as a correction phase voltage command to control the gate of the three-phase PWM converter.

5. 发明专利

JP2000083379A PWM CONVERTER WITH CAPACITIVE IMPEDANCE SERIALLY CONNECTED WITH AC POWER SUPPLY SIDE 失效
公开(公告)号：JP2000083379A
公开(公告)日：2000-03-21
申请号：JP24961798
申请日：1998-09-03
申请人： RAILWAY TECHNICAL RES INST , TOYO ELECTRIC MFG CO LTD
发明人： YAMAMOTO TAKAMITSU , WATANABE ASAKI , HATSUKADE SATORU , TANAKA TAKAYOSHI , SHIODA TAKESHI
IPC分类号： H02J1/02 , H02M1/12 , H02M7/12 , H02M7/155 , H02M7/219
摘要： PROBLEM TO BE SOLVED: To reduce the capacity of a switching element by increasing the efficiency of a PWM converter that is connected to an AC power supply with a large internal impedance. SOLUTION: A capacitive impedance Cc is connected in series with each phase of the AC input terminal of a PWM converter part 100, and an AC input terminal is subjected to PWM modulation, so that the equivalent circuit of the PWM converter when viewed from terminals 27-29 becomes a series circuit of the capacitive impedance Cc and a resistive impedance. Since the capacitive impedance Cc is connected in series with the AC input side of the PWM converter part 100 in this manner, a voltage which applied to the switching elements 16-21 of the PWM converter can be reduced, thus reducing the conductive loss and the switching loss of the switching elements 16-21.

6. 发明专利

JP2000166240A DC VOLTAGE CONTROL CIRCUIT OF PWM CONVERTER 失效
公开(公告)号：JP2000166240A
公开(公告)日：2000-06-16
申请号：JP33662398
申请日：1998-11-27
申请人： TOYO ELECTRIC MFG CO LTD
发明人： SHIODA TAKESHI , SANO TAKASHI , TANAKA TAKAYOSHI
IPC分类号： H02M7/12 , H02M7/162 , H02M7/219
摘要： PROBLEM TO BE SOLVED: To keep the DC voltage of a PWM converter by increasing a command resistance with a rise in DC voltage to increase DC voltage and decreasing the command resistance with a decrease in DC voltage to increase DC voltage. SOLUTION: If DC voltage Edc is smaller than a DC voltage command Edc*, a command resistance R* is set at a power supply internal resistance Rs by keeping a deviation inversing amplification value Ra negative, and a command resistance additional value Rb at zero. If the DC voltage Edc is larger than the DC voltage command Edc*, command resistance R* is set at a power supply internal resistance Rs by keeping the deviation inversing amplification value Ra positive, and the command resistance additional value Rb positive. That is, if the DC voltage Edc increases, it is controlled so as to be increased by increasing the command resistance R*. If the DC voltage Edc decreases, the DC voltage Edc is controlled so as to be increased by decreasing the command resistance Rx.

7. 发明专利

JP2001004689A TESTING METHOD FOR CONTROL AMPLIFIER IN VVVF INVERTER AND DEVICE THEREFOR 失效
公开(公告)号：JP2001004689A
公开(公告)日：2001-01-12
申请号：JP17767699
申请日：1999-06-24
申请人： TOYO ELECTRIC MFG CO LTD
发明人： SHIODA TAKESHI , OYAMA YUJI , TANAKA TAKAYOSHI
IPC分类号： G01R31/00 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide a test device constructed of an electronic circuit such as a microcomputer alone without using a rotor by computing and predicting a prediction a filter current and the like in a main circuit unit from a previously set main circuit unit constant and outputting it to a control amplifier. SOLUTION: A control amplifier 1 in a VVVF inverter outputs a gate signal G to a d-axial and q-axial voltage computing circuit 11 and a short circuit detection circuit 17. The d-axial and q-axial voltage computing circuit 11 computes respective phase voltages, stator d-axial and q-axial voltages so as to output them to a current computing circuit 12 and a filter voltage computing circuit 14. The current computing circuit 12 computes a stator and rotor d-axial and q-axial current prediction values from an electrical angular velocity prediction value and stores them so as to output them to a two-phase/three-phase conversion circuit 13. The conversion circuit 13 computes a three-phase current prediction value and outputs it to a D/A conversion circuit 16. The D/A conversion circuit 16 carries out analog-conversion of the three- phase current prediction value and a filter voltage prediction value so as to output a three-phase current signal, a filter voltage signal and an electrical angular velocity signal to the control amplifier 1.

8. 发明专利

JP2000224865A TESTING APPARATUS OF VVVF INVERTER 失效
公开(公告)号：JP2000224865A
公开(公告)日：2000-08-11
申请号：JP2105399
申请日：1999-01-29
申请人： TOYO ELECTRIC MFG CO LTD
发明人： SHIODA TAKESHI , TANAKA TAKAYOSHI
IPC分类号： H02M7/12 , H02M7/48 , H02P27/06 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To realize a testing apparatus of a VVVF inverter only by electric circuits, by so controlling a PWM forward converter that the three-phase currents of the VVVF inverter coincide with the three-phase current-command values of an induction motor which are computed based on a preset electric angular velocity, the AC output voltage of the VVVF inverter, and the electric constants of the induction motor. SOLUTION: A current-command computing circuit 11 inputs every sampling time interval three-phase AC-output voltages Vu, Vv, Vw of a VVVF inverter and a preset electric angular velocity ωr of an induction motor which is outputted from a preset- rotational-speed generating circuit 13. The circuit 11 computes three-phase stator- current command values Iu*, Iv*, Iw* of the induction motor. The circuit 11 outputs the computed results to a gate-signal generating circuit 12 which are used as the three-phase current-command values of the VVVF inverter. The circuit 12 so controls a PWM forward converter of a testing apparatus of the VVVF inverter that the three-phase AC currents Iu, Iv, Iw of the VVVF inverter which are sensed by the DC-CTs of the testing apparatus of the VVVF inverter coincide with the three-phase current-command values Iu*, Iv*, Iw* of the VVVF inverter. The circuit 12 outputs the controlled gate signals of the PWM forward converter of the testing apparatus to the gates of its switching elements.

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