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1. 发明专利

JP2007110894A Electric power conversion system 有权
标题翻译：电力转换系统
公开(公告)号：JP2007110894A
公开(公告)日：2007-04-26
申请号：JP2006312381
申请日：2006-11-20
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ICHINOSE MASAYA , FUTAMI MOTOO , UEDA SHIGETA
IPC分类号： H02J3/38 , G01R19/00 , G05F1/70 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To detect an individual operation of an electric power converter linked to a system by a simple control unit or by a control method.
SOLUTION: A frequency component is added to an output voltage command value of an electric power converter, and the amplitude width of the frequency component is detected from a voltage that the system outputs.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：通过简单的控制单元或通过控制方法检测与系统相关联的电力转换器的单独操作。解决方案：将频率分量加到电力转换器的输出电压指令值，并根据系统输出的电压来检测频率分量的振幅。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2003033004A Self-commutated power converter 审中-公开
标题翻译：自回归功率转换器
公开(公告)号：JP2003033004A
公开(公告)日：2003-01-31
申请号：JP2001213351
申请日：2001-07-13
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： UEDA SHIGETA , KATO SHUJI
IPC分类号： H02M1/092
摘要： PROBLEM TO BE SOLVED: To reduce the number of fibers for transmitting on/off signals insulated by light, to facilitate their assembling work, and to simplify voltage adjustment work to be performed beforehand.
SOLUTION: This is a power converter which has arms each of which is composed of a series-connected substance 11-1n of at least two self-arc- extinguishing semiconductor switching devices, is provided with a plurality of gate driving circuits 21-2n which have the function of detecting individual collector voltages of a plurality of semiconductor switching devices by resistors 81-8n and performing voltage clamping, and supplies on/off signals Pon/off to these gate driving circuits form a remote site insulating them by light. A light distribution circuit 9 which receives an optical signal obtained by converting an on/off signal with a light emitting diode 51 via a light guide 4, distributes and supplies this optical signal to individual gate driving circuits by light guides 41-4n (photodetectors 31-3n), is provided.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了减少用于传输由光绝缘的开/关信号的光纤的数量，以便于其组装工作，并且简化要预先执行的电压调整工作。解决方案：这是一种功率转换器，其具有由至少两个自灭弧半导体开关器件的串联连接物质11-1n构成的臂，设置有多个栅极驱动电路21-2n，栅极驱动电路21-2n 具有通过电阻器81-8n检测多个半导体开关器件的各个集电极电压并执行钳位的功能，并且向这些栅极驱动电路提供导通/截止信号Pon / off，从而形成将光隔离的远端。接收经由导光体4通过用发光二极管51转换开/关信号而获得的光信号的配光电路9，通过光导41-4n（光电检测器31）将该光信号分配并提供给各个门驱动电路 -3n）。

3. 发明专利

JP2003009537A Power converter 审中-公开
标题翻译：电源转换器
公开(公告)号：JP2003009537A
公开(公告)日：2003-01-10
申请号：JP2001193873
申请日：2001-06-27
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ICHINOSE MASAYA , KIYOFUJI YASUHIRO , FUTAMI MOTOO , UEDA SHIGETA
IPC分类号： H02J3/38 , G05F1/67 , H02M3/155 , H02M7/12 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To overcome a problem in the prior art that there rises a risk that the optimum operation cannot be assured for each battery because the generated power is different in each battery depending on the installation area of a plurality of solar batteries. SOLUTION: Power can be supplied to the power system only with an inverter by connection a plurality of power generators with DC via a voltage step-up circuit and an reverse current stop diode. Moreover, the inverter executes the control to keep constant a DC voltage, and also executes the maximum power follow-up control by changing duty cycle of the voltage step-up circuit which is sequentially connected respectively to a plurality of power generating facilities to make maximum the AC power outputted from the inverter. The duty cycle of voltage step-up circuit is changed to execute the maximum power follow-up control in the manner that the inverter executes the DC voltage constant control, power of each power generation facility is detected from the current and voltage outputted from a power generator for each power generation facility, and each AC power or each step-up voltage input power outputted from the power generation facilities becomes maximum.
摘要翻译：要解决的问题为了克服现有技术中存在的问题，由于多个太阳能电池的安装面积由于每个电池的发电功率不同，所以存在不能确保每个电池的最佳操作的风险。解决方案：只能使用变频器通过电压升压电路和反向电流停止二极管连接多台直流发电机，才能向电力系统供电。此外，逆变器执行控制以保持直流电压恒定，并且还通过改变顺序地连接到多个发电设备的升压电路的占空比来执行最大功率跟随控制，以使最大功率跟随从变频器输出的交流电源。电压升压电路的占空比被改变为以逆变器执行直流电压恒定控制的方式执行最大功率跟随控制，从根据电力输出的电流和电压检测每个发电设备的功率每个发电设备的发电机，并且从发电设备输出的每个AC电力或每个升压电压输入功率变得最大。

4. 发明专利

JP2003079129A Gate drive circuit and power converter using the same 审中-公开
标题翻译：门控驱动电路和功率转换器
公开(公告)号：JP2003079129A
公开(公告)日：2003-03-14
申请号：JP2001267789
申请日：2001-09-04
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ITO TOMOMICHI , UEDA SHIGETA , KATO SHUJI , IKIMI TAKASHI , FUTAMI MOTOO
IPC分类号： H02M1/00 , H03K17/08 , H03K17/56
摘要： PROBLEM TO BE SOLVED: To surely detect an overcurrent even in a turn-on period to protect a switching device from the overcurrent. SOLUTION: When a switching signal is inputted from an upper hierarchy control circuit, a predicted collector voltage pattern, which is predicted to be generated when an IGBT 1 is in switching operation, is outputted by a predicted voltage pattern generator 2 to a comparator 4 and a collector voltage of the IGBT 1 is outputted by a collector voltage detector 3 to the comparator 4 for comparing the collector voltage with the predicted collector voltage pattern. If the collector voltage is higher than the predicted collector voltage pattern by a value which is not less than the prescribed value, an overcurrent detection signal is outputted to a gate voltage generator 5 and, if a transistor 55 is turned on by the overcurrent detection signal, a transistor 58 is turned on, and the gate voltage of the IGBT 1 is lowered, a current flowing through the IGBT 1 is cut off and the IGBT 1 can be protected from an overcurrent.
摘要翻译：要解决的问题：即使在接通时间段中也可以检测到过电流，以保护开关装置免受过电流的影响。解决方案：当从上层控制电路输入切换信号时，预测的IGBT1在开关动作时产生的预测的集电极电压模式由预测电压模式发生器2输出到比较器4， IGBT 1的集电极电压由集电极电压检测器3输出到比较器4，用于将集电极电压与预测的集电极电压图案进行比较。如果集电极电压比预测的集电极电压图形高出不小于规定值的值，则过电流检测信号被输出到栅极电压发生器5，并且如果晶体管55由过电流检测信号导通晶体管58导通，IGBT1的栅极电压降低，流过IGBT1的电流被切断，能够防止IGBT1过电流。

5. 发明专利

JP2003070229A Semiconductor power converter 有权
标题翻译：半导体电源转换器
公开(公告)号：JP2003070229A
公开(公告)日：2003-03-07
申请号：JP2001259120
申请日：2001-08-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO SHUJI , UEDA SHIGETA , SAKAI HIROMITSU , IKIMI TAKASHI , ITO TOMOMICHI
IPC分类号： H01L27/06 , H02M1/00 , H03K17/00 , H03K17/082
CPC分类号： H01L27/0641 , H03K17/0828 , H03K2217/0036
摘要： PROBLEM TO BE SOLVED: To provide a means of preventing turn-off loss from increasing by excessively clamping a collector voltage when the voltage rise ratio (dv/dt) of collector voltage of IGBT becomes high.
SOLUTION: This power converter includes a circuit structure in which the collector voltage of IGBT is divided, and a means of protecting IGBT from overvoltage application to a collector by outputting a voltage at a voltage- divided position, to fix a housing for a resistor on the voltage side higher than the voltage-dividing point to an emitter potential of IGBT.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供当IGBT的集电极电压的升压比（dv / dt）变高时，通过过度钳位集电极电压来防止关断损耗增加的手段。解决方案：该电力转换器包括其中IGBT的集电极电压被分压的电路结构，以及通过在分压位置输出电压来保护IGBT免受过电压施加到集电极的装置，以将电阻器的壳体固定在电压侧高于IGBT的发射极电位的分压点。

6. 发明专利

JP2003069401A Semiconductor power converter 有权
标题翻译：半导体电源转换器
公开(公告)号：JP2003069401A
公开(公告)日：2003-03-07
申请号：JP2001259121
申请日：2001-08-29
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： KATO SHUJI , UEDA SHIGETA , SAKAI HIROMITSU , IKIMI TAKASHI , ITO TOMOMICHI
IPC分类号： H02M1/00 , H03K17/08 , H03K17/082 , H03K17/10 , H03K17/56
CPC分类号： H02M1/32 , H03K17/0828 , H03K17/107
摘要： PROBLEM TO BE SOLVED: To prevent an IGBT (Insulated Gate Bipolar Transistor) from being destroyed due to an overvoltage because of a voltage unbalance among the IGBTs when an overcurrent flows through the IGBTs connected in series configuring a power converter.
SOLUTION: The power converter configured with a series connection of the IGBTs includes a means for increasing a gate voltage when a collector voltage of the IGBT gets higher and a means for increasing the gate voltage more than the gate voltage in a steady ON state of the IGBT when the collector voltage gets higher.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：为了防止IGBT（绝缘栅双极型晶体管）由于过电流而流过IGBT串联配置功率转换器时由于IGBT之间的电压不平衡而被过电压破坏。解决方案：配置有IGBT的串联连接的功率转换器包括当IGBT的集电极电压变高时提高栅极电压的装置和用于在栅极电压的稳定导通状态下增加栅极电压的装置，集电极电压越高IGBT。

7. 发明专利

JP2000078834A Semiconductor power converter 有权
标题翻译：半导体电源转换器
公开(公告)号：JP2000078834A
公开(公告)日：2000-03-14
申请号：JP24283298
申请日：1998-08-28
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： MORI KAZUHISA , IYOTANI RYUJI , UEDA SHIGETA , SAKAI HIROMITSU
IPC分类号： H02M1/08 , H03K17/16
摘要： PROBLEM TO BE SOLVED: To provide a small-sized semiconductor power converter simple in constitution.
SOLUTION: A series body consisting of a resistor 5 and a capacitor 6 is connected in parallel with a self arc-extinguishing switching element 1 so that the capacitor 6 may be on the low potential side (for example, the emitter side in case of IGBT) of the self arc extinguishing switching element 1, and the drive circuits 72 and 73 of the self arc-extinguishing switching element 1 are supplied with power through the capacitor 6 of the series body and a voltage adjusting circuit 71 connected to the capacitor 6. As a result, it can be supplied with power for gate drive stably by a relatively small circuit.
COPYRIGHT: (C)2000,JPO
摘要翻译：要解决的问题：提供一种构造简单的小型半导体功率转换器。解决方案：由电阻器5和电容器6组成的串联体与自灭弧开关元件1并联连接，使得电容器6可以在低电位侧（例如，在IGBT的情况下为发射极侧）和自灭弧开关元件1的驱动电路72和73通过串联体的电容器6和连接到电容器6的电压调节电路71供电。结果，可以通过相对较小的电路来稳定地为栅极驱动提供电力。

8. 发明专利

JP2003319658A Power converter 有权
标题翻译：电源转换器
公开(公告)号：JP2003319658A
公开(公告)日：2003-11-07
申请号：JP2002120197
申请日：2002-04-23
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： ITO TOMOMICHI , UEDA SHIGETA , IKIMI TAKASHI , KATO SHUJI , SAKAI HIROMITSU
IPC分类号： H02M7/12 , H02M1/14
摘要： PROBLEM TO BE SOLVED: To provide a power converter which swiftly suppresses the oscillation of a direct current circuit.
SOLUTION: The power converter comprises a direct-current voltage. detecting means for detecting an output voltage; a direct-current voltage control means which calculates a direct current command value from the difference between a direct-current voltage command value and a direct-current voltage detection value; a direct-current detecting means which detects a direct-current flowing out to other power converters; a direct current constant multiplying means which multiplies a direct-current detection value by an integer; a direct current differentiating means which multiplies the differentiation value of the direct-current detection value by an integer; an adding means which adds the output of the direct current differentiating means and the output of the direct current constant multiplying means; and a subtracting means which subtracts the output value of the adding means from the output of the direct-current voltage control means and the direct current command value to create the direct current command value.
COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种迅速抑制直流电路的振荡的电力转换器。电源转换器包括直流电压。用于检测输出电压的检测装置; 直流电压控制装置，从直流电压指令值和直流电压检测值之间的差计算直流指令值; 直流检测装置，其检测流向其他功率转换器的直流电流; 将直流检测值乘以整数的直流常数乘法装置; 将直流检测值的微分值乘以整数的直流微分装置; 添加装置，其添加直流电流微分装置的输出和直流常数乘法装置的输出; 以及减法装置，其从直流电压控制装置的输出和直流指令值中减去相加装置的输出值，以产生直流指令值。版权所有（C）2004，JPO

9. 发明专利

JP2002374624A Load voltage regulator 审中-公开
标题翻译：负载电压调节器
公开(公告)号：JP2002374624A
公开(公告)日：2002-12-26
申请号：JP2001181253
申请日：2001-06-15
申请人： Hitachi Ltd , 株式会社日立製作所
发明人： FUTAMI MOTOO , ISHIZAKI SHINICHI , KITAMURA HIROSHI , HIGUCHI MIKISUKE , UEDA SHIGETA
IPC分类号： H02J9/06 , G05F1/70 , H02J3/18 , H02M7/48
CPC分类号： Y02E40/30
摘要： PROBLEM TO BE SOLVED: To provide a load voltage regulator suitable for regulating load voltage and power supply power factor, without increasing the size thereof. SOLUTION: The load voltage regulator is constituted of a power converter INV1 connected via a transformer T1 inserted in parallel between a power system 1 and a load L1, and a power converter INV2 connected in parallel with the system side of the transformer; the power converter INV1 adjusts the amplitude and phase of a load voltage VL, so that the voltage on the load side of the transformer has desired voltage amplitude. The power converter INV2 regulates the direct-current voltage of direct-current filter capacitors C1 and C2, to a desired magnitude and further supplies a current different in phase from the voltage of the power system so that the phase of the load current IL or the current I1 of the power converter INV1 has desired phase. The load voltage phase is adjusted by the power converter INV1, so that desired power factor is obtained on the receiving side, and the amplitude of a current supplied from the power converter INV2 is determined according to the phase error, after the adjustment of the load voltage phase by the power converter INV1.
摘要翻译：要解决的问题：提供适合于调节负载电压和电源功率因数的负载电压调节器，而不增加其尺寸。解决方案：负载电压调节器由通过并联插入电力系统1和负载L1之间的变压器T1连接的功率转换器INV1和与变压器的系统侧并联连接的功率转换器INV2构成; 功率转换器INV1调整负载电压VL的幅度和相位，使得变压器的负载侧的电压具有期望的电压幅度。功率转换器INV2将直流滤波电容器C1和C2的直流电压调节到期望的幅度，并且进一步向电力系统的电压提供不同相位的电流，使得负载电流IL或功率转换器INV1的电流I1具有期望的相位。由功率转换器INV1调节负载电压相位，从而在接收侧获得期望的功率因数，并且在负载调整之后根据相位误差确定从功率转换器INV2提供的电流的幅度电压转换器INV1的电压相位。

10. 发明专利

DE60219096D1 未知
公开(公告)号：DE60219096D1
公开(公告)日：2007-05-10
申请号：DE60219096
申请日：2002-01-17
申请人： HITACHI LTD
发明人： KIM HOUNG JOONG , UEDA SHIGETA
IPC分类号： H02K1/22 , H02K21/00 , B61C9/48 , B61F3/04 , B61F3/16 , H02K1/27 , H02K1/28 , H02K16/02 , H02K21/14 , H02K29/08
摘要： A dynamo-electric machine (2) has a stator (10, 11) with a primary winding (11) and a rotor (20-23) with a field magnet (21) and a shaft (22). The field magnet includes a first field magnet (21A) having different polarity magnetic poles sequentially arranged in a rotation direction and a second field magnet (21B) having different polarity magnetic poles sequentially arranged in a rotation direction. The machine further has a mechanism (23, 60-62) for shifting the first and the second field magnets in axial and rotation directions.

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