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1. 发明专利

JPS5342313A REVERSIBLE OPERATION SYSTEM FOR THYRISTOR INVERTER MOTOR 失效
公开(公告)号：JPS5342313A
公开(公告)日：1978-04-17
申请号：JP11805676
申请日：1976-09-30
申请人： FUJI ELECTRIC CO LTD
发明人： MAEDA EIJI , SUZUKI TATATOMI
IPC分类号： H02P27/06
摘要： PURPOSE:To facilitate the start of forward and reverse operations of a thyristor inverter motor for forced commutation by providing the same polarity of initial charging voltage for charging capacitors for forced commutation both for forward and reverse operations.

2. 发明专利

JPS5339431A INITIAL CHARGING SYSTEM FOR CURRENT CONTROL TYPE THYRISTOR INVERTER 失效
公开(公告)号：JPS5339431A
公开(公告)日：1978-04-11
申请号：JP11425176
申请日：1976-09-22
申请人： FUJI ELECTRIC CO LTD
发明人： MAEDA EIJI , SUZUKI TATATOMI
IPC分类号： H02M7/515
摘要： PURPOSE:To perform initial charging of commutation capacitor easily within short time without requiring complex recharger, by utilizing thyristor in thyristor inverter itself.

4. 发明专利

JPS57170097A SHAFT GENERATOR 失效
公开(公告)号：JPS57170097A
公开(公告)日：1982-10-20
申请号：JP5496881
申请日：1981-04-14
申请人： FUJI ELECTRIC CO LTD
发明人： NIWA KOUICHI , TAKADA MASASHI , NAKANO TAKAYOSHI , MAEDA EIJI
IPC分类号： H02P9/04 , H02J9/08 , H02P11/06
摘要： PURPOSE:To use a shaft generating device fully without leaving it unused by a method wherein an auxiliary driving machine is separately provided in addition to a variable speed main driving machine and an AC generator switches between the two driving machines. CONSTITUTION:With a variable speed main driving machine 10 on a normal run, an AC generator 12 is connected thereto through a clutch 34. The AC power generated by the AC generator 12 is rectified by a rectifier 14 and is supplied to an inverter 18 through a DC circuit 16. At the same time, a synchrous phase modifier 20 connects a separately excited power source to the inverter 18 for conversion into an AC power which is then supplied to an AC bus through a switch 22. With the variable speed main driving machine 10 running at low speeds or out of operation, the AC generator 12 is connected to an auxiliary driving machine 38 through a clutch 36. Consequently, the shaft generator system including the AC generator 12 can supply without interruption a constant frequency/constant voltage to the AC bus 24.

6. 发明专利

JPS607472B2 失效
公开(公告)号：JPS607472B2
公开(公告)日：1985-02-25
申请号：JP623874
申请日：1974-01-10
申请人： FUJI ELECTRIC CO LTD
发明人： MAEDA EIJI
IPC分类号： H02P3/18 , H02P3/22 , H02P6/06 , H02P6/08 , H02P6/28 , H02P21/04 , H02P21/22 , H02P23/03 , H02P23/06 , H02P23/07 , H02P23/16 , H02P27/06

7. 发明专利

JPS57170098A VARIABLE VOLTAGE-VARIABLE FREQUENCY GENERATING DEVICE USING SHAFT DRIVING SYSTEM 失效
公开(公告)号：JPS57170098A
公开(公告)日：1982-10-20
申请号：JP5496981
申请日：1981-04-14
申请人： FUJI ELECTRIC CO LTD
发明人： NIWA KOUICHI , IMAIZUMI SHINICHI , NAKANO TAKAYOSHI , MAEDA EIJI
IPC分类号： H02P11/06
摘要： PURPOSE:To improve the performance of a shaft generating system by a method wherein a power converter is designed to withstand a varibable voltage/ variable frequency (VVVF) condition and the output end thereof switches between an AC bus or a VVVF power supply terminal. CONSTITUTION:With a variable speed main driving machine 10 on a normal run, currents in the excitation winding 26 of an AC generator 12 and the excitation winding 30 of a synchronous phase modifier 20 are regulated by adjusting a variable frequency setter 52 and a variable voltage regulator 58, which results in a VVVF voltage at the output end of an inverter 18. The VVVF voltage thus obrained opens a switch 22 to break connection between the inverter 18 and an AC bus 24 and, at the same time, closes a switch 48 so that a given load may be supplied with power through a power supply terminal 50.

8. 发明专利

JPS5339423A OPERATING INVERTER MOTOR 失效
公开(公告)号：JPS5339423A
公开(公告)日：1978-04-11
申请号：JP11425276
申请日：1976-09-22
申请人： FUJI ELECTRIC CO LTD
发明人： MAEDA EIJI , SUZUKI TATATOMI
IPC分类号： H02P1/26 , H02M7/515 , H02P3/18 , H02P27/06
摘要： PURPOSE:To promote a shortening of the dead time for switching to reverse running with anamalous rise suppressed as well of the voltage caused by a charge when restarting the inverter, by enabling an operation of the inverter stopped when a voltage polarity of commutation condenser is initial charge voltage polarity.

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