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1. 发明申请

US20070007969A1 Circuit and system for detecting dc component in inverter device for grid-connection 审中-公开
标题翻译：用于并网逆变器的直流分量检测电路及系统
公开(公告)号：US20070007969A1
公开(公告)日：2007-01-11
申请号：US10570610
申请日：2004-08-26
申请人： Zheng Dai , Yosuke Harada , Motoyasu Sato
发明人： Zheng Dai , Yosuke Harada , Motoyasu Sato
IPC分类号： G01R35/00
CPC分类号： H02M7/48 , G01R19/0007
摘要： A DC component detecting circuit (18) detects a small DC component contained in the AC output power of a grid-connection inverter device (12), accurately within a short period of time, and has a simple, small-size, and lightweight configuration. The DC component detecting circuit (18) comprises separators (21, 22) for separating a voltage which is proportional to the output current of the inverter device into voltages in positive and negative half periods, integrators (23, 24) for integrating the separated voltages in the positive and negative half periods, and an adder (25) for adding integral signals in the positive and negative half periods from the integrators (23, 24).
摘要翻译：直流成分检测电路（18）能够在短时间内精确地检测并网逆变器装置（12）的交流输出功率所包含的小的DC成分，并且具有简单，小型化，重量轻的结构。直流分量检测电路（18）包括分离器（21,22），用于将与逆变器装置的输出电流成比例的电压分离成正半周期和负半周期的电压，积分器（23,24）用于对分离的电压进行积分在正和负半周期中，以及加法器（25），用于在积分器（23,24）的正半周期和负半周期中相加积分信号。

2. 发明申请

US20060214509A1 Power supply including system interconnection inverter 审中-公开
标题翻译：电源包括系统互连逆变器
公开(公告)号：US20060214509A1
公开(公告)日：2006-09-28
申请号：US10555320
申请日：2004-05-07
申请人： Zheng Dai , Yosuke Harada
发明人： Zheng Dai , Yosuke Harada
IPC分类号： H02J3/00
CPC分类号： H02J3/38 , Y10T307/25
摘要： The present invention provides a power supply apparatus including a system linkage inverter. The power supply apparatus has a simple facility structure and is capable of accurately supplying a dummy load with excessive electric power that changes from time to time. The power supply apparatus has a system linkage inverter (13) for inversely transforming DC electric power into AC electric power and supplying the AC electric power to a load (17) connected to a system power supply (20), a dummy load (21) connected parallel to the load (17) through a power device (22), a circuit (28) for detecting electric power flowing from the load to the system power in every constant time, a calculating unit (29) for accumulating the detected electric power, and a control unit (30) for turning on and off the power device for the dummy load based on a state value of an electric power flow calculated by the calculating unit.
摘要翻译：本发明提供一种包括系统联动逆变器的电源装置。电源装置具有简单的设备结构，并且能够准确地提供具有随时间变化的过大电力的虚拟负载。电力供给装置具有将直流电变换为交流电力的逆变器（13），向与系统电源（20）连接的负载（17）供给交流电力，虚拟负载（21）通过功率器件（22）与负载（17）并联连接的电路（28），用于在每个恒定时间内检测从负载流向系统功率的电力的电路（28），用于累积检测到的电力的计算单元，以及控制单元（30），用于基于由所述计算单元计算的电力流的状态值来接通和断开所述虚拟负载的功率装置。

3. 发明申请

US20070273342A1 ELECTRIC POWER SUPPLY APPARATUS AND METHOD OF SYNCHRONOUSLY OPERATING POWER CONVERTER 审中-公开
标题翻译：电力供应装置和同步运行电力转换器的方法
公开(公告)号：US20070273342A1
公开(公告)日：2007-11-29
申请号：US11753283
申请日：2007-05-24
申请人： Tadashi Kataoka , Shigeru Sakata , Takahide Ozawa , Isao Tsukagoshi , Zheng Dai
发明人： Tadashi Kataoka , Shigeru Sakata , Takahide Ozawa , Isao Tsukagoshi , Zheng Dai
IPC分类号： G05F1/10 , H02J3/12
CPC分类号： H02P9/006 , H02P2101/10
摘要： An electric power supply apparatus includes a distributed power generator such as a gas turbine generator and a power converter such as an inverter apparatus for converting electric power generated by the distributed power generator into AC electric power (alternating-current power) having a required frequency and a required voltage and supplying the AC electric power to a load. The electric power supply apparatus further includes a control unit having output voltage vs. output current characteristics for determining an output voltage corresponding to an output current of the power converter. The output voltage vs. output current characteristics has a first dropping characteristic for causing output electric power of the electric generator to be limited, between a first output current exceeding a power generation capability of the electric generator and a second output current exceeding a power converting capability of the power converter.
摘要翻译：电力供给装置包括燃气轮机发电机等分布式发电机和用于将由分散发电机产生的电力转换为具有所需频率的交流电力（交流电力）的逆变器装置的功率转换器，以及所需的电压并将AC电力提供给负载。电力供给装置还包括具有用于确定与功率转换器的输出电流对应的输出电压的输出电压与输出电流特性的控制单元。输出电压与输出电流特性之间具有第一下降特性，用于在超过发电机的发电能力的第一输出电流与超过功率转换能力的第二输出电流之间限制发电机的输出功率的功率转换器。

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