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21. 发明专利

JPH01213583A POWER UNIT FOR TESTING INDUCTION MOTOR CHARACTERISTIC 失效
公开(公告)号：JPH01213583A
公开(公告)日：1989-08-28
申请号：JP3992788
申请日：1988-02-22
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUCHIMOTO NAOHIDE
IPC分类号： G01R31/34
摘要： PURPOSE:To prevent occurrence of a self-exciting phenomenon by providing a control means which opens a switching means when a fault occurs at a power source or the power supply from the power source is stopped while the power source performs a characteristic test on an induction motor. CONSTITUTION:This induction motor characteristic testing device is provided with a detecting means 19 which detects the operating states of power sources 1 and 2 and a control means 20 which controls the opening and closing of contacts 11-13 in accordance with the detected results of the detecting means 19. When a three-phase AC power source or a variable power source is stopped or becomes faulty while a characteristic test is performed on an induction motor M, the stoppage or faulty state is detected by the detecting means 19 and transmitted to the control means 20. Then the control means 20 opens the stop signal contact 12 or fault signal contact 13. As a result, the excitation of an exciting coil 16 is stopped and a magnet contactor acting as a switching means is opened. Accordingly, the induction motor M and an LC filter are diconnected from each other and a self-exciting phenomenon is certainly prevented.

22. 发明专利

JPH01126169A INVERTER CONTROLLING DEVICE 失效
公开(公告)号：JPH01126169A
公开(公告)日：1989-05-18
申请号：JP28197387
申请日：1987-11-10
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUCHIMOTO NAOHIDE
IPC分类号： H02M7/497
摘要： PURPOSE:To make the rate of content of harmonic component constant and to reduce by comparing an inverted triangle wave with a sine wave and making ignition signals of switching elements of a pair of inverter circuit. CONSTITUTION:An inverter controlling device is constituted of a velocity command means 1, a voltage/frequency command implementation circuit 2 implementing a voltage command and a frequency command from the command means 1, a PWM signal implementation circuit 3, a voltage controlling circuit 4, base amplifier circuits 5a-5b, a gate amplifier circuit 6, a thyristor full-wave rectifier circuit 8 of three phase AC power supply 7, a DC reactor 9, a smoothing electrolytic capacitor 10, inverter circuits 11a-11b by an transistor and a coupling reactor 12. A sine wave is compared with a inverted triangle wave, ignition signals of inverter circuits 11a-11b are implemented, and two or more even numbered inverter circuits 11a-11b are ignited at different points by these ignition signals. In addition, the multiple coupling of the output is made by a coupling reactor 12, and the harmonic wave is offset to suppress it.

23. 发明专利

JPS6395892A CONTROLLING DEVICE FOR INVERTER 失效
公开(公告)号：JPS6395892A
公开(公告)日：1988-04-26
申请号：JP24069186
申请日：1986-10-08
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUCHIMOTO NAOHIDE
IPC分类号： H02M7/48 , H02P27/06
摘要： PURPOSE:To prevent short-circuit of upper and lower switching elements, by a method wherein the direction of output current of an inverter is detected, and ON/OFF control of the upper and lower switching elements is performed based on the direction. CONSTITUTION:A current direction detection circuit 6a of U phase outputs current direction detection signal SU of H level, when output current IU is positive current flowing from an inverter 4 into a motor 5. Also it outputs current direction detection current SU of L level when the output current IU is negative current flowing from the motor 5 into the inverter 4. An ON/OFF signal producing circuit 13a of U phase produces ON/OFF signals U , U of upper and lower transistors UP, UN by ON/OFF signal of U phase and the output current direction detection signal SU.

24. 发明专利

JP2019092389A 電源切替装置及び電源切替システム审中-公开
公开(公告)号：JP2019092389A
公开(公告)日：2019-06-13
申请号：JP2019054521
申请日：2019-03-22
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHINOMOTO YOSUKE , HATAKEYAMA KAZUNORI , YAMAKAWA TAKASHI , KASUGAI MAKOTO , TSUCHIMOTO NAOHIDE
IPC分类号： H02J9/04 , H02J3/32 , H02J3/38
摘要：【課題】電力系統への逆潮流を回避しつつ、蓄電された電力を変換して確実に負荷に供給する。【解決手段】商用電力系統が停電した際には、充放電装置50を構成するバッテリユニット65の電力を制御ユニット66に供給する。そして、当該制御ユニット66は、商用電力系統から家庭内電力系統を解列する。次に、制御ユニット66は、交直変換器53〜55を動作させて、電気自動車のメインバッテリユニットに蓄えられた電力を、住宅の負荷に供給する。【選択図】図3

25. 发明专利

JP2015092821A 充放電装置及び電源切替システム审中-公开
公开(公告)号：JP2015092821A
公开(公告)日：2015-05-14
申请号：JP2014256126
申请日：2014-12-18
申请人： MITSUBISHI ELECTRIC CORP
发明人： SHINOMOTO YOSUKE , HATAKEYAMA KAZUNORI , YAMAKAWA TAKASHI , KASUGAI MAKOTO , TSUCHIMOTO NAOHIDE
IPC分类号： H02J3/32 , B60L11/18 , H02J3/38 , H02J7/00 , H02J7/34 , H02J9/06
摘要：【課題】電力系統への逆潮流を回避しつつ、蓄電された電力を変換して確実に負荷に供給する。【解決手段】商用電力系統が停電した際には、充放電装置50を構成するバッテリユニット65の電力を制御ユニット66に供給する。そして、当該制御ユニット66は、商用電力系統から家庭内電力系統を解列する。次に、制御ユニット66は、交直変換器53〜55を動作させて、電気自動車のメインバッテリユニットに蓄えられた電力を、住宅の負荷に供給する。【選択図】図3

26. 发明专利

JPH06133562A VOLTAGE TYPE INVERTER 失效
公开(公告)号：JPH06133562A
公开(公告)日：1994-05-13
申请号：JP27579192
申请日：1992-10-14
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUCHIMOTO NAOHIDE
IPC分类号： H02M7/155 , H02M7/12 , H02M7/48 , H02P3/18 , H02P27/06 , H02P7/63
摘要： PURPOSE:To obtain an inexpensive voltage type inverter by providing a controller for exciting an output transformer to discharge a capacitor in a DC circuit and varying the discharge time constant depending on the exciting frequency thereby reducing the number of components. CONSTITUTION:The voltage type inverter comprises a controller 18 set with a discharge time constant for exciting an output transformer 5 and discharging an electrolytic capacitor 3 and the inverter is operated in conventional manner at the time of conduction. When a load connector 6 is disconnected at the time of stoppage, firing angle of a thyristor converter 1 is controlled such that the DC voltage becomes 0V and a transistor inverter 4 is oscillated to excite the output transformer 5 thus discharging the electrolytic capacitor 3. This constitution reduces the number of components and provides an inexpensive voltage type inverter.

27. 发明专利

JPH04197081A INVERTER CONTROLLER 失效
公开(公告)号：JPH04197081A
公开(公告)日：1992-07-16
申请号：JP32639690
申请日：1990-11-28
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUCHIMOTO NAOHIDE
IPC分类号： H02M7/48 , H02M7/537
摘要： PURPOSE:To eliminate imbalance between positive and negative output voltage by arranging a minimum pulse width control circuit in the prestage of a gate amplifier thereby monitoring the length of a signal for turning a main element ON or OFF and constituting the circuit such that the ON and OFF time intervals endure for longer than a predetermined time interval. CONSTITUTION:A short circuit preventing time producing circuit 5 produces a time interval Td for preventing short circuit of upper and lower arms for U, V, W pulse width modulation signals outputted from a pulse width modulation circuit 3 thus producing a signal for turning upper and lower elements ON or OFF. When the U, V, W pulse width modulated signals fed from the PWM circuit 3 endure shorter than the short circuit preventive time interval Td, the PWM signal is erased thus ensuring pulse width OFF interval for the PWM circuit 3. A minimum ON pulse width control circuit 8 then erases signals having ON interval shorter than a predetermined interval thus producing a signal having long ON interval.

28. 发明专利

JPS6343572A INVERTER CONTROLLER 失效
公开(公告)号：JPS6343572A
公开(公告)日：1988-02-24
申请号：JP18571186
申请日：1986-08-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUCHIMOTO NAOHIDE
IPC分类号： H02M7/48
摘要： PURPOSE:To prevent elements from being damaged by using a signal from a short-circuit detecting means for switching semiconductors so as to determine whether a device can be restarted or not after a failure. CONSTITUTION:An inverter controller is composed of an inverter formed with arms 2-4 corresponding to phases U-W, start and stop commanding section 6, a failure detecting circuit 7, a failure resetting circuit 8, a gate signal forming circuit 17, a gate circuit 10, and the like, and a motor 11 is driven by the inverter. In this case, phases U-W transistor short-circuit detecting circuits 12-14 are provided to detect short circuits. Then, a start discrimination circuit 15 for discriminating whether the inverter can be started or not with the signal, and a short circuit failure indicating circuit 16 are provided. When the inverter can be started, then the output of a start permitting signal and a transistor availability indicating signal is generated, and when the inverter cannot be started, then the outputs of start inhibiting signal and transistor failure signal are generated.

29. 发明专利

JPS62123985A CONTROLLER FOR INVERTER 失效
公开(公告)号：JPS62123985A
公开(公告)日：1987-06-05
申请号：JP25858285
申请日：1985-11-20
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUCHIMOTO NAOHIDE
IPC分类号： H02P25/04 , H02P27/06
摘要： PURPOSE:To drive all motors by setting constant-output point frequency and maximum frequency to arbitrary frequency. CONSTITUTION:A frequency command preparation circuit 5 prepares a frequency command by a speed command 1 and a maximum frequency command from a circuit 4 or a command from a maximum-frequency setting circuit 12. A voltage command preparation circuit 6 prepares a voltage command by the speed command 1 and a constant-output point frequency selecting switch 2 and the maximum frequency command from the circuit 4 or the speed command 1 and a constant-output point frequency setting circuit 11 and the command from the maximum-frequency setting circuit 12. When the constant-output point frequency setting circuit 11 is set to arbitrary frequency of 30-120Hz and the maximum-frequency setting circuit 12 is set to arbitrary frequency of 30-120Hz, the relationship of voltage outputted from an inverter 8 and frequency is shown in a section surrounded by (a) and (b) in the graph.

30. 发明专利

JPS6277064A ASYNCHRONOUS/SYNCHRONOUS MODE SWITCHING METHOD FOR PWM INVERTER 失效
公开(公告)号：JPS6277064A
公开(公告)日：1987-04-09
申请号：JP21376185
申请日：1985-09-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： TSUCHIMOTO NAOHIDE
IPC分类号： H02M7/48
摘要： PURPOSE:To prevent an overvoltage from being generated by switching from asynchronous mode to a synchronous mode of an inverter when a U-shape sinusoidal wave alters from negative to positive, and deciding the switching time point by the gradient of a triangular wave and the phase difference of the U-shape at that time. CONSTITUTION:A triangular wave is compared with a sinusoidal wave in an asynchronous mode program, and a rightward up UD=1 and rightward down UD=0 of the triangular wave are detected. An external clock C (frequency = 1,536 X inverter frequency) is counted to obtain a counted value CN. CN=CN-1,536 is set in case of CN 1,536, and when setting a synchronous mode, it is shifted to a mode switching program. In case of CN>18 and UD=0, it is waited until CN=55 is satisfied, and in case of CN 18, UD=1, it is waited until CN=55 is satisfied, and in case of CN

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