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公开(公告)号：US5111377A
公开(公告)日：1992-05-05
申请号：US663168
申请日：1991-03-01
IPC分类号： H02J3/38
CPC分类号： H02J3/38 , H02J2003/388
摘要： In a power interconnection system between an electric power system and a power converter which makes AC power from a DC power source, a positive feed-back loop is constituted so as to include a frequency deviation detector, a band-pass filter, an inert zone circuit, an amplifier, an adder, a phase controller, an inverter controller, an inverter and an interconnection reactor. Thereby a sufficiently great frequency fluctuation is made after opening of a branch line switch, so as to produce a frequency abnormality signal to be given to a disconnection switch; and disconnection is made certainly.
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公开(公告)号：US5155675A
公开(公告)日：1992-10-13
申请号：US605486
申请日：1990-10-30
摘要： In a method of controlling the output voltage of a three-phase three-level inverter having a plurality of switching elements by pulse width modulation in each of three-pulse and one-pulse modes, the upper limit of the percentage modulation is set to a value equal to or smaller than the maximum percentage modulation determined by the minimum switching element off time to output a three-level voltage as an inverter output voltage in each phase if each of the switching element is turned of and off one time during one inverter output period.
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公开(公告)号：US3967138A
公开(公告)日：1976-06-29
申请号：US531984
申请日：1974-12-12
申请人： Hiroshi Mitsuoka , Masayoshi Kumano
发明人： Hiroshi Mitsuoka , Masayoshi Kumano
摘要： A capacitor charged with a voltage across anode and cathode of a thyristor after the voltage division and rectification is connected across gate and cathode of the thyristor through a switch while a diode with or without a series reactor is connected across the anode and gate through the same switch. Alternatively a primary winding of an insulating transformer may be connected across the anode and cathode and its secondary winding is operative to charge the capacitor through diodes. The switch is preferably a light switch.
摘要翻译： 在分压和整流之后，在晶闸管的栅极和阴极之间通过开关连接充满晶闸管的阳极和阴极的电容器的电容器，而具有或不具有串联电抗器的二极管通过阳极和栅极连接在其两端 开关。 或者，绝缘变压器的初级绕组可以跨阳极和阴极连接，并且其次级绕组可操作以通过二极管对电容器充电。 该开关优选为光开关。
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公开(公告)号：US4652770A
公开(公告)日：1987-03-24
申请号：US809711
申请日：1985-12-17
申请人： Masayoshi Kumano
发明人： Masayoshi Kumano
CPC分类号： H02J9/062 , H02J3/38 , Y10T307/516 , Y10T307/625 , Y10T307/735
摘要： A power source device according to this invention comprises a voltage and phase detector for detecting the voltage and phase of a power supply system, a first controller for controlling an inverter so that an output of the inverter may agree with either a reference voltage and a reference phase or with the voltage and the phase of the power supply system, a second controller for switching the inputs of the first controller from the reference voltage and phase to the power supply system voltage and phase, or vice versa, when the phases of a reference oscillator and the power supply system have agreed, and a third controller for switching the power to a load from the inverter to the power supply system, or vice versa, when the synchronism between the inverter output and the power supply system has been detected.
摘要翻译： 根据本发明的电源装置包括用于检测电源系统的电压和相位的电压和相位检测器，用于控制逆变器的第一控制器，使得逆变器的输出可以与参考电压和参考电压一致 相位或电源系统的电压和相位的第二控制器，用于将第一控制器的输入从参考电压和相位切换到电源系统电压和相位的第二控制器，反之亦然，当参考电压 振荡器和电源系统已经同意，并且当检测到逆变器输出和电源系统之间的同步时，第三控制器用于从逆变器向电源系统切换负载的电力，反之亦然。
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公开(公告)号：US3943430A
公开(公告)日：1976-03-09
申请号：US481186
申请日：1974-06-20
申请人： Masayoshi Kumano
发明人： Masayoshi Kumano
IPC分类号： H02M1/06 , H02M3/135 , H02M7/515 , H03K17/732
CPC分类号： H03K17/732 , H02M1/06 , H02M3/135 , H02M7/5155
摘要： A circuit for reducing thyristor turn-off time includes a thyristor connected between a power source and a load. A voltage source is connected between the anode and the cathode of the thyristor for applying across the anode and the cathode of the thyristor, upon actuation of a switch, an electrical signal sufficient to block the forward current of the thyristor. A rectifier and an impedance connected between the gate and the cathode of the thyristor cause a reverse current to flow in the gate of the thyristor upon application of the voltage source.
摘要翻译： 用于降低晶闸管截止时间的电路包括连接在电源和负载之间的晶闸管。 电压源连接在晶闸管的阳极和阴极之间，用于在开关的作用下横跨晶闸管的阳极和阴极施加足以阻挡晶闸管的正向电流的电信号。 连接在晶闸管的栅极和阴极之间的整流器和阻抗在施加电压源时导致反向电流在晶闸管的栅极中流动。
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