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1. 发明授权

US06272028B1 Power converter apparatus 有权
标题翻译：电力转换装置
公开(公告)号：US06272028B1
公开(公告)日：2001-08-07
申请号：US09649001
申请日：2000-08-28
申请人： Kazuhiro Satoh , Ryo Nakajima , Kosaku Ichikawa
发明人： Kazuhiro Satoh , Ryo Nakajima , Kosaku Ichikawa
IPC分类号： H02H7122
CPC分类号： H02M7/48 , H02M1/12
摘要： A power converter apparatus, including a DC power source, a semiconductor stack, connected to the DC power source in parallel, having a plurality of semiconductor devices and a cooler for refrigerating the semiconductor devices, the semiconductor devices and the cooler are stacked and pressured to each other, and a snubber circuit, connected to the DC power source in parallel, having a serial circuit of a capacitor and a diode, and a resistor connected in parallel to the diode, one terminal of the capacitor is disposed adjacent to the semiconductor stack so that magnetic flux generated by current flowing in the terminal cancels magnetic flux caused by current flowing in the semiconductor stack.
摘要翻译：并联连接到具有多个半导体器件的DC电源的DC电源，半导体堆叠以及用于将半导体器件，半导体器件和冷却器冷却的冷却器的功率转换器装置被堆叠并加压到彼此连接的并联连接到DC电源的缓冲电路，具有电容器和二极管的串联电路以及与二极管并联连接的电阻器，电容器的一个端子邻近半导体堆叠设置使得在端子中流动的电流产生的磁通消除由在半导体堆叠中流动的电流引起的磁通量。

2. 发明授权

US06229722B1 Multiple inverter system 有权
标题翻译：多变频器系统
公开(公告)号：US06229722B1
公开(公告)日：2001-05-08
申请号：US09456317
申请日：1999-12-08
申请人： Kosaku Ichikawa , Akio Hirata , Kazuto Kawakami , Kazuhiro Satoh
发明人： Kosaku Ichikawa , Akio Hirata , Kazuto Kawakami , Kazuhiro Satoh
IPC分类号： H02M700
CPC分类号： H02M7/49 , H02M7/10 , H02M7/5395 , H02M2001/325
摘要： A multiple inverter system of the present invention is disclosed. It includes a plurality of input transformers having secondary windings and a plurality of unit inverter cells connected in series at n stages to compose respective phases and supply the electric power to a multiple phase load in combination with the input transformers. The input transformers have 3n sets of three-phase windings at the secondary side and the secondary windings of the transformers, which are out-of-phase at each phase, are connected to unit inverter cells of each phase at the n-th stages. Further, the present invention is provided with a bypass switch control to melt a fuse that is applicable to a unit inverter given with a circuit closing command by giving this circuit closing command to a bypass switch corresponding to applicable unit inverters in response to an operation abnormality detector and a DC abnormality detector.
摘要翻译：公开了本发明的多逆变器系统。它包括具有次级绕组的多个输入变压器和以n个级串联连接的多个单位反相器单元，以组成各个相，并将电力与输入变压器相结合地提供给多相负载。输入变压器在次级侧具有3n组三相绕组，并且在每相处于异相的变压器的次级绕组在第n级连接到各相的单元逆变器单元。此外，本发明提供了一种旁路开关控制，用于熔化适用于具有电路关闭命令的单元逆变器的保险丝，该电路关闭命令响应于操作异常向与可应用单元逆变器相对应的旁路开关给予该闭路指令检测器和直流异常检测器。

3. 发明授权

US4675800A Power converter with a failure detector of a self-turn-off semiconductor element 失效
标题翻译：具有自关断半导体元件的故障检测器的功率转换器
公开(公告)号：US4675800A
公开(公告)日：1987-06-23
申请号：US664384
申请日：1984-10-24
申请人： Nagataka Seki , Kosaku Ichikawa
发明人： Nagataka Seki , Kosaku Ichikawa
IPC分类号： H02H7/12 , H02M1/06 , H02M1/08 , H02M1/088 , H02H7/10
CPC分类号： H02M1/088
摘要： A power converter including a plurality of serially connected self-turn-off semiconductor elements, including a first control circuit for producing a plurality of control signals, and a plurality of second control circuits is connected to receive respective of the control signals to supply a non-conduction control signal to a respective of the self-turn-off semiconductor elements to turn off the respective semiconductor element. The power converter further includes a plurality of failure detectors and blocking circuits. Each of the failure detectors is connected to a respective of the self-turn-off semiconductor elements for detecting a fault thereof to produce a fault detection signal when the respective self-turn-off semiconductor elements has failed. Each of the blocking circuits is connected to the respective failure detector and to the first control circuit for blocking either the respective control signal or the respective non-conduction control signal based on the respective fault detection signal.
摘要翻译：包括多个串联连接的自关断半导体元件的功率转换器，包括用于产生多个控制信号的第一控制电路和多个第二控制电路，以接收各自的控制信号， - 导通控制信号发送到相关的自关断半导体元件以关闭相应的半导体元件。功率转换器还包括多个故障检测器和阻塞电路。每个故障检测器连接到各自的自关断半导体元件，用于检测其故障，以在相应的自关断半导体元件发生故障时产生故障检测信号。每个阻塞电路连接到相应的故障检测器和第一控制电路，用于基于相应的故障检测信号来阻止相应的控制信号或相应的非导通控制信号。

4. 发明授权

US06285235B1 Gate control circuit for voltage drive switching element 有权
标题翻译：电压驱动开关元件的栅极控制电路
公开(公告)号：US06285235B1
公开(公告)日：2001-09-04
申请号：US09266774
申请日：1999-03-12
申请人： Kosaku Ichikawa , Tateo Koyama , Hitoshi Matsumura , Shinji Sato
发明人： Kosaku Ichikawa , Tateo Koyama , Hitoshi Matsumura , Shinji Sato
IPC分类号： H03K1704
CPC分类号： H03K17/0406 , H02M1/08 , H02M1/38 , H03K17/04123
摘要： A gate control circuit for turning on and off an insulated gate semiconductor device having gate, emitter and collector terminals, including a first DC power source coupled to the gate terminal via a first switch and configured to apply a positive voltage to the gate terminal in order to turn on the insulated gate semiconductor device when the first switch is turned on and the second switch is turned off; a second DC power source coupled to the gate terminal via a second switch and configured to apply a negative voltage to the gate terminal in order to turn off the insulated gate semiconductor device when the second switch is turned on and the first switch is turned off; a parallel circuit of a diode and a capacitor coupled in series to the second switch; and a turn off assist circuit configured to produce a negative charge on the capacitor to assist in turning off the insulated gate semiconductor device. In a power converter circuit having a plurality of insulated gate semiconductor devices, equalization of delay times for turning off the insulated gate semiconductor devices is achieved by controlling a charged stored in the capacitor of each gate control circuit based on detected collector-emitter voltages or detected emitter currents.
摘要翻译：一种用于接通和断开具有栅极，发射极和集电极端子的绝缘栅极半导体器件的栅极控制电路，包括经由第一开关耦合到栅极端子的第一DC电源，并且被配置为按顺序向栅极端子施加正电压当所述第一开关接通并且所述第二开关断开时，接通所述绝缘栅极半导体器件; 第二直流电源，经由第二开关耦合到所述栅极端子，并且被配置为向所述栅极端子施加负电压，以在所述第二开关导通并且所述第一开关断开时关闭所述绝缘栅极半导体器件; 耦合到第二开关的二极管和电容器的并联电路; 以及关闭辅助电路，其被配置为在所述电容器上产生负电荷以帮助关闭所述绝缘栅极半导体器件。在具有多个绝缘栅极半导体器件的功率转换器电路中，通过基于检测到的集电极 - 发射极电压控制存储在每个栅极控制电路的电容器中的电荷来实现用于关断绝缘栅极半导体器件的延迟时间的均衡发射极电流。

5. 发明授权

US5929665A Power converter with voltage drive switching device monitored by device parameters and electric parameters 失效
标题翻译：具有电压驱动开关器件的电源转换器通过器件参数和电气参数进行监控
公开(公告)号：US5929665A
公开(公告)日：1999-07-27
申请号：US42576
申请日：1998-03-17
申请人： Kosaku Ichikawa , Akio Hirata , Kazuto Kawakami , Kazuhiro Satoh
发明人： Kosaku Ichikawa , Akio Hirata , Kazuto Kawakami , Kazuhiro Satoh
IPC分类号： H01L29/00 , H02M1/06 , H02M1/08 , H02M3/06 , H02M3/10 , H02M7/757
CPC分类号： H01L29/00 , H02M1/06 , H02M1/08 , H02M3/06 , H02M3/10 , H02M7/757
摘要： A power converter having at least a pair of voltage drive switching elements, which comprises a gate control circuit, the gate control circuit comprising a detecting section for detecting at least one of a set of device parameters and a set of electric parameters of the voltage drive switching elements, a monitoring section for monitoring at least one of states of turn-on and turn-off of the voltage drive switching elements based on the at least one of a set of device parameters and a set of electric parameters of the voltage drive switching elements detected by the detecting section, and a control section for controlling a gate of the voltage drive switching elements based on a monitoring result of the monitoring section.
摘要翻译：一种功率转换器，具有至少一对电压驱动开关元件，其包括门控制电路，所述栅极控制电路包括用于检测所述电压驱动器的一组器件参数和一组电参数中的至少一个的检测部分开关元件，用于基于电压驱动开关的一组设备参数和一组电参数中的至少一个来监视电压驱动开关元件的导通和关断状态中的至少一个状态的监视部分由检测部检测出的元件，以及控制部，其根据监视部的监视结果控制电压驱动开关元件的栅极。

6. 发明授权

US5790396A Neutral point clamped (NPC) inverter control system 失效
标题翻译：中性点钳（NPC）变频器控制系统
公开(公告)号：US5790396A
公开(公告)日：1998-08-04
申请号：US766476
申请日：1996-12-12
申请人： Satoshi Miyazaki , Shinji Tatara , Kosaku Ichikawa
发明人： Satoshi Miyazaki , Shinji Tatara , Kosaku Ichikawa
IPC分类号： H02M7/48 , H02M7/487 , H02H7/122
CPC分类号： H02M7/487
摘要： A neutral point clamped (NPC) inverter control system including a DC power source to output DC voltage having a neutral point, an NPC inverter to convert the DC voltage into AC voltage in three phases through a PWM control, a mode selecting unit to decide a first and a second PWM modes by comparing amplitude of voltage reference with a prescribed value that is defined by a minimum pulse width, a first voltage reference conversion means to add a prescribed bias value at which a polarity changes to positive/negative within a fixed period to secure the minimum pulse width to voltage references in respective phases in a first PWM mode, a second voltage reference conversion means to fix the voltage reference in one phase by a value that secures the minimum pulse width when voltage reference in one phase is smaller than a prescribed value that is defined by the minimum pulse width in a second PWM mode and correct voltage references of other two phases so as to make line voltage to a value corresponding to the voltage reference, and a modulation frequency change-over means to lower PWM control modulation frequency in the first PWM mode and to suppress power loss caused by switching in the first PWM mode.
摘要翻译：一种中性点钳位（NPC）逆变器控制系统，包括用于输出具有中性点的直流电压的直流电源; NPC逆变器，其通过PWM控制将三相直流电压转换为交流电压;模式选择单元，第一和第二PWM模式，通过将参考电压的幅度与由最小脉冲宽度限定的规定值进行比较;第一参考电压转换装置，用于在固定周期内增加极性变化为正/负的规定偏置值以在第一PWM模式下将各个相位中的最小脉冲宽度确保为电压基准;第二参考电压转换装置，用于将一个相位中的电压基准固定在一相中的电压参考值，所述值在一相中的电压基准小于在第二PWM模式中由最小脉冲宽度限定的规定值，并且校正其它两相的电压基准，以使线电压达到值co 以及调制频率切换装置，用于降低第一PWM模式中的PWM控制调制频率，并抑制由第一PWM模式切换引起的功率损耗。

7. 发明授权

US06392907B1 NPC inverter control system 有权
标题翻译： NPC变频器控制系统
公开(公告)号：US06392907B1
公开(公告)日：2002-05-21
申请号：US09598974
申请日：2000-06-22
申请人： Kosaku Ichikawa
发明人： Kosaku Ichikawa
IPC分类号： H02M324
CPC分类号： H02M7/487 , H02M2001/348
摘要： An NPC inverter control system includes a DC power source having a neutral point corresponding to a junction of a pair of capacitors connected in serial one another, a positive electrode and a negative electrode, at least one multi-level inverter circuit having a plurality of semiconductor devices coupled to the DC power source and configured to invert the DC power to an AC power and to supply the AC power to a load, and a plurality of saturatable reactors configured to join the positive and negative electrodes of the DC power source to the multi-level inverter circuit.
摘要翻译： NPC逆变器控制系统包括具有对应于彼此串联连接的一对电容器的连接点的中性点的直流电源，正极和负极，至少一个具有多个半导体的多电平逆变器电路耦合到DC电源并被配置为将DC电力反向AC电力并将AC电力提供给负载的设备;以及多个饱和电抗器，被配置为将DC电源的正极和负极连接到多个级逆变电路。

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