专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JP2006014515A Dc ground fault detector 有权
标题翻译：直流接地故障检测器
公开(公告)号：JP2006014515A
公开(公告)日：2006-01-12
申请号：JP2004189052
申请日：2004-06-28
申请人： Aichi Electric Co Ltd , 愛知電機株式会社
发明人： AOYAMA KOJI , KATO HIDENARI
IPC分类号： H02H3/347 , G01R31/02 , H02J1/00
摘要： PROBLEM TO BE SOLVED: To provide a DC ground fault detector which is applied to a power converter constituting an interconnected system or the like, keeps the detection level of DC ground fault constant, and prevents an erroneous detection of a ground fault detection circuit. SOLUTION: The DC ground fault detector is attached to a non-isolated type power converter 102 which converts the DC power of a DC power source 101 to AC power to be interconnected to an AC power system 103 having grounding, and detects the grounding current flowing from the DC power source 101 via the grounding point of the AC power system 103 to detect a ground fault. The secondary winding of a current transformer 109 inserted into a DC line or an AC line is applied with AC voltage, and the absolute average value of the excitation current of the current transformer 109 during operation of the power converter 102 is compared with a set value by each cycle to perform the DC ground fault detection. In addition, the DC ground fault detector is provided with a degaussing function of the current transformer 109. COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：为了提供一种应用于构成互连系统等的功率转换器的DC接地故障检测器，保持DC接地故障的检测电平恒定，并防止接地故障检测的错误检测电路。
解决方案：DC接地故障检测器连接到非隔离型电力转换器102，其将直流电源101的直流电力转换为交流电力以互连到具有接地的交流电力系统103，并且检测接地电流通过交流电源系统103的接地点从直流电源101流出，以检测接地故障。插入DC线或AC线的电流互感器109的次级绕组被施加AC电压，并且将电力变换器102的运行期间的电流互感器109的励磁电流的绝对平均值与设定值进行比较通过每个周期执行直流接地故障检测。此外，直流接地故障检测器具有电流互感器109的消磁功能。版权所有（C）2006，JPO＆NCIPI

2. 发明专利

JP2011239544A Power conversion apparatus for photovoltaic power generation system 有权
标题翻译：用于光伏发电系统的功率转换装置
公开(公告)号：JP2011239544A
公开(公告)日：2011-11-24
申请号：JP2010108035
申请日：2010-05-10
申请人： Aichi Electric Co Ltd , 愛知電機株式会社
发明人： AOYAMA KOJI , TSUJIMOTO KENJI
IPC分类号： H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a power conversion apparatus equipped with a cooling structure, which is used in a photovoltaic power generation system and is capable of preventing degradation of electric power efficiency of the whole system.SOLUTION: A power conversion apparatus is housed in an outdoor panel 4, and semiconductor elements 5 that form power converters disposed on an inside surface of the outdoor panel 4 and a heat receiving plate 7 abutted thereon are secured on an outside surface of the outdoor panel 4. A heat pipe 8 supporting a base end 8b on the heat receiving plate 7 is installed, projecting to the outside of the outdoor panel 4.
摘要翻译：解决的问题：提供一种配备有用于光伏发电系统中的冷却结构并且能够防止整个系统的电力效率劣化的电力转换装置。解决方案：电力转换装置容纳在室外面板4中，并且形成设置在室外面板4的内表面上的电力转换器和与其接合的热接收板7的半导体元件5固定在在室外面板4的外侧安装有支撑在受热板7上的基端部8b的热管8，凸出到室外面板4的外侧。（C）2012，JPO＆INPIT

3. 发明专利

JP2010115083A Superconducting coil power supply system 有权
标题翻译：超导线圈电源系统
公开(公告)号：JP2010115083A
公开(公告)日：2010-05-20
申请号：JP2008287671
申请日：2008-11-10
申请人： Aichi Electric Co Ltd , 愛知電機株式会社
发明人： AOYAMA KOJI , MIZUNO HIDENORI
IPC分类号： H02M9/00 , G21B1/11 , G21B1/21 , G21B1/25
CPC分类号： Y02E40/67 , Y02E70/30
摘要： PROBLEM TO BE SOLVED: To provide a simple and inexpensive method for abruptly changing a current flowing to a superconducting coil. SOLUTION: A plurality of DC power supplies are connected in series to set a first power supply at a low-voltage continuous rating and to set a second power supply connected in series at a high voltage short-time rating. When a switch of a continuous rating is connected to the output of the second power supply in parallel to abruptly change the current of the superconducting coil, the switch is opened to flow the current via the first and second power supplies. When making a steady-state current flow, the switch is closed to make the current flow only via the first power supply. COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于突然改变流向超导线圈的电流的简单且便宜的方法。解决方案：多个直流电源串联连接，以设定低电压连续额定值的第一电源，并设置以高电压短时间额定值串联连接的第二电源。当连续额定值的开关并联连接到第二电源的输出以突然改变超导线圈的电流时，开关被打开以经由第一和第二电源流动电流。当进行稳态电流时，开关闭合，仅通过第一个电源使电流流动。版权所有（C）2010，JPO＆INPIT

4. 发明专利

JP2010104104A Superconducting coil power supply system 有权
标题翻译：超导线圈电源系统
公开(公告)号：JP2010104104A
公开(公告)日：2010-05-06
申请号：JP2008271469
申请日：2008-10-22
申请人： Aichi Electric Co Ltd , 愛知電機株式会社
发明人： AOYAMA KOJI , MIZUNO HIDENORI
IPC分类号： H02M9/00 , G21B1/21
CPC分类号： Y02E40/67
摘要： PROBLEM TO BE SOLVED: To provide an easy and inexpensive method for steeply changing a current to be supplied to a superconducting coil. SOLUTION: In the superconducting coil power supply system, a high-voltage short-time rated power supply 6 is connected to a low-voltage continuous rated power supply 1 in series thereto, a predetermined voltage is applied to the system from the high-voltage short-time rated power supply 6, a current of a switch 3 is set to zero, after that, the switch 3 is opened, and thereby the current to be supplied to the superconducting coil 5 is steeply changed by using the low-voltage continuous rated power supply 1 and the high-voltage short-time rated power supply 6. COPYRIGHT: (C)2010,JPO&INPIT

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式