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1. 发明专利

JP2008043184A Power supply unit, and method for synchronously operating power conversion device 审中-公开
标题翻译：电源单元以及用于同步操作电力转换装置的方法
公开(公告)号：JP2008043184A
公开(公告)日：2008-02-21
申请号：JP2007138054
申请日：2007-05-24
申请人： Ebara Corp , Ebara Densan Ltd , 株式会社荏原製作所 , 株式会社荏原電産
发明人： KATAOKA TADASHI , SAKATA SHIGERU , OZAWA TAKAHIDE , TSUKAGOSHI ISAO , TAI MASA
IPC分类号： H02M7/00
摘要： PROBLEM TO BE SOLVED: To provide a power supply unit suited for a power supply system that performs parallel operation of a plurality of unitized power supply devices, formed from generators and power converters. SOLUTION: This power supply device includes a generator, a power converter for converting power generated by the generator into AC power at a required frequency and voltage, and a controller for the power converter. The controller is provided with a control section with output voltage-output current characteristics for determining the output voltage, corresponding to the output current of the power converter. The output voltage-output current characteristics include a first drooping characteristic for limiting the output power of the generator between a first output current that exceeds the generation capacity of the generator and a second output current beyond the conversion capacity of the power converter. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种适用于由发电机和电力转换器形成的多个单元化电力供应装置的并行运行的电源系统的电源装置。解决方案：该电源装置包括发电机，用于将发电机产生的电力以所需频率和电压转换为交流电的功率转换器，以及用于功率转换器的控制器。该控制器具有控制部分，具有用于确定与功率转换器的输出电流相对应的输出电压的输出电压 - 输出电流特性。输出电压 - 输出电流特性包括用于在超过发电机的发电量的第一输出电流和超过功率转换器的转换容量的第二输出电流之间限制发电机的输出功率的第一下垂特性。版权所有（C）2008，JPO＆INPIT

2. 发明专利

JP2003033043A Inverter apparatus 审中-公开
标题翻译：逆变器装置
公开(公告)号：JP2003033043A
公开(公告)日：2003-01-31
申请号：JP2001218053
申请日：2001-07-18
申请人： Ebara Corp , Ebara Densan Ltd , 株式会社荏原製作所 , 株式会社荏原電産
发明人： TAI MASA
IPC分类号： H02M7/48 , H02P6/08 , H02P27/06 , H02P27/08 , H02P7/63
摘要： PROBLEM TO BE SOLVED: To provide an inverter apparatus which is a pulse width modulation control type inverter apparatus supplying a load current to a motor and which can compensate an influence of a dead time stably.
SOLUTION: This inverter apparatus has an inverter 1 which converts a DC output of a DC power supply into an AC output, an operation apparatus 2 which controls the inverter, and a current detector 3 which detects a load current outputted by the inverter. The operation apparatus 2 has a pulse width modulation control unit 21, a polarity detection unit 22 which compares the load current detected by the current detector with a predetermined threshold level and decides the polarity of the load current, a digital filter 23 which levels the output of the polarity detection unit, and a compensation unit 24 which outputs the dead time compensation value of the inverter according to the output of the digital filter.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种逆变器装置，其是向电动机提供负载电流并且可以稳定地补偿死区时间的影响的脉宽调制控制型逆变器装置。解决方案：该逆变器装置具有将直流电源的直流输出转换为交流输出的逆变器1，控制逆变器的运算装置2以及检测逆变器输出的负载电流的电流检测器3。操作装置2具有：脉冲宽度调制控制部21，极性检测部22，将由电流检测器检测出的负载电流与规定的阈值电平进行比较，判断负载电流的极性;数字滤波器23，的极性检测单元，以及根据数字滤波器的输出输出逆变器的死区补偿值的补偿单元24。

3. 发明专利

JP2007209164A Method for detecting phase angle and inverter 审中-公开
标题翻译：检测相角和逆变器的方法
公开(公告)号：JP2007209164A
公开(公告)日：2007-08-16
申请号：JP2006027144
申请日：2006-02-03
申请人： Ebara Corp , Ebara Densan Ltd , 株式会社荏原製作所 , 株式会社荏原電産
发明人： TAI MASA , TAMURA HIROYUKI , KOMAI MASAKAZU
IPC分类号： H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a method for detecting the phase angle of a three-phase AC voltage or current in which the phase angle can be detected precisely even if noise is included in the detection waveform of voltage or current, and to provide an inverter comprising a phase angle detection means by the method and a control means. SOLUTION: Instantaneous value of a three-phase AC voltage or current is detected every sampling period, an orthogonal biaxial component of α-axis component and β-axis component is operated from the instantaneous value thus detected. Instantaneous value θ of phase angle is then operated from the α-axis component and the β-axis component by operating θ=arctan(β/α). Prediction value θp of phase angle is operated from the instantaneous value data of a plurality of latest phase angles by straight line approximation such as least square approximation. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种用于检测三相AC电压或电流的相位角的方法，其中即使在电压或电流的检测波形中包括噪声，也可以精确地检测相位角，以及提供一种逆变器，其包括通过该方法和控制装置的相位角检测装置。
解决方案：每采样周期检测三相交流电压或电流的瞬时值，从所检测的瞬时值运算α轴分量和β轴分量的正交双轴分量。然后通过θ= arctan（β/α）从α轴分量和β轴分量运行相位角的瞬时值θ。相位角的预测值θp由多个最新相位角的瞬时值数据通过直线近似如最小二乘近似来操作。版权所有（C）2007，JPO＆INPIT

4. 发明专利

JP2003047256A Inverter device 审中-公开
标题翻译：逆变器装置
公开(公告)号：JP2003047256A
公开(公告)日：2003-02-14
申请号：JP2001228478
申请日：2001-07-27
申请人： Ebara Corp , Ebara Densan Ltd , 株式会社荏原製作所 , 株式会社荏原電産
发明人： SATO MOTOYASU , ISHIHARA SEIICHI , TAMURA HIROYUKI , HIGAKI NOBUHIRO , TAI MASA
IPC分类号： H02M7/48 , H02M7/537 , H02M7/5387
摘要： PROBLEM TO BE SOLVED: To provide an inverter device of pulse width modulation control for supplying load current to a motor capable of stably compensating for an effect of dead time.
SOLUTION: This inverter device includes an inverter 1 for converting DC output of a DC power supply into AC output, a calculating device 2 for controlling the inverter, and a voltage detector 3 for detecting the polarity of voltage outputted from the inverter. The calculating device includes a pulse width modulation control unit 21, a polarity detector 22 for determining the polarity of load current based on the polarity of voltage in a dead time section detected by the voltage detector, a digital filter 23 for leveling the polarity detector output, and a compensation part 23 for outputting the dead time compensation amount of the inverter corresponding to the digital filter output.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种用于向能够稳定地补偿死区时间的效果的电动机提供负载电流的脉宽调制控制的逆变器装置。解决方案：该逆变器装置包括用于将直流电源的直流输出转换为交流输出的逆变器1，用于控制逆变器的计算装置2以及用于检测从逆变器输出的电压的极性的电压检测器3。计算装置包括：脉冲宽度调制控制部21，极性检测部22，用于根据由电压检测器检测的死区时间部分的电压极性决定负载电流的极性;数字滤波器23，用于使极性检测器输出以及用于输出与数字滤波器输出对应的逆变器的死区补偿量的补偿部23。

5. 发明专利

JP2005006383A System interconnection inverter apparatus and its controlling method 审中-公开
标题翻译：系统互连逆变器装置及其控制方法
公开(公告)号：JP2005006383A
公开(公告)日：2005-01-06
申请号：JP2003165721
申请日：2003-06-10
申请人： Ebara Densan Ltd , 株式会社荏原電産
发明人： TAI MASA , HARADA YOSUKE
IPC分类号： H02M3/28 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a system interconnection inverter apparatus in which total efficiency is enhanced by especially enhancing the efficiency of a DC/DC converter. SOLUTION: The system interconnection inverter apparatus is provided with a DC/DC converter for boosting a DC power through switching with variable duty ratio, and an inverter for inverting a boosted DC power to produce an AC power having the frequency of a system power supply. The DC/DC converter outputs a required minimum output voltage of minimum value V1 within the range of the input voltage and outputs a rated output voltage V2 while keeping a maximum duty ratio. The duty ratio becomes variable at an input voltage (V2-V3) not lower than a rated input voltage and the efficiency η is maximized in the vicinity of the rated input voltage V2 where the rated output voltage is outputted. COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：提供一种通过特别提高DC / DC转换器的效率来提高总效率的系统互连逆变器装置。解决方案：系统互连逆变器装置设置有用于通过可变占空比切换来提升直流电力的DC / DC转换器，以及用于使升压的直流电源反相以产生具有系统频率的交流电的逆变器电源。 DC / DC转换器在输入电压范围内输出最小值V1所需的最小输出电压，并输出额定输出电压V2，同时保持最大占空比。在不低于额定输入电压的输入电压（V2-V3）下，占空比变化，在输出额定输出电压的额定输入电压V2附近，效率η最大化。版权所有（C）2005，JPO＆NCIPI

6. 发明专利

JP2004320868A System interconnection inverter device 审中-公开
公开(公告)号：JP2004320868A
公开(公告)日：2004-11-11
申请号：JP2003109773
申请日：2003-04-15
申请人： Ebara Densan Ltd , 株式会社荏原電産
发明人： TAI MASA , HARADA YOSUKE
IPC分类号： H02J3/46
摘要： PROBLEM TO BE SOLVED: To provide a system interconnection inverter device that can perfectly prevent the generation of a reverse power flow that effective power flows out to a system power side, with a simple equipment constitution without the necessity for preparing a pseudo load. SOLUTION: The system interconnection inverter device that feeds AC power to a load connected to a system power supply 20 by inverting DC power to the AC power is provided with a control means 15 that controls an inverter 13 so that an effective current component of a current that flows out to the system power supply 20 becomes zero or minus with respect to a system power supply voltage. COPYRIGHT: (C)2005,JPO&NCIPI

7. 发明专利

JP2004180490A Dc component detection circuit and detection system for system cooperation inverter device 审中-公开
公开(公告)号：JP2004180490A
公开(公告)日：2004-06-24
申请号：JP2003328158
申请日：2003-09-19
申请人： Ebara Densan Ltd , 株式会社荏原電産
发明人： TAI MASA , HARADA YOSUKE , SATO MOTOYASU
IPC分类号： H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a detection circuit which can accurately and quickly detect a very small amount of DC components included in AC output with a simple circuit constitution, and at the same time, which can realize miniaturization and reduction in weight in a system cooperation inverter device. SOLUTION: The circuit 18 is for detecting the DC components included in the output of the system cooperation inverter device 12. It is composed of separation circuits 21, 22 to separate a voltage proportional to an output current of the inverter device for every half period on the positive side and the negative side, integration circuits 23, 24 to respectively integrate the voltage separated for every half period on the positive side and the negative side, an addition circuit 25 to add the integrated value of the voltage separated for every half period on the positive side and the negative side of the integration circuit. COPYRIGHT: (C)2004,JPO

8. 发明专利

JP2009027766A Power converter of duplex feeding winding type induction generator 审中-公开
标题翻译：双向送料式感应发电机功率转换器
公开(公告)号：JP2009027766A
公开(公告)日：2009-02-05
申请号：JP2007185489
申请日：2007-07-17
申请人： Ebara Densan Ltd , 株式会社荏原電産
发明人： TAI MASA , SATO MOTOYASU
IPC分类号： H02P9/00 , H02J3/38
摘要： PROBLEM TO BE SOLVED: To provide a power converter of a duplex feeding winding type induction generator which can perform stable operation even if a system voltage drops instantaneously without isolating the duplex feeding winding type induction generator from the system even in a grid-connected wind power generation system. SOLUTION: The power converter comprises a first power converter 21 exciting a secondary winding of a rotor of a duplex feeding winding type induction generator 13 including a stator having the primary winding connected with a power system and a rotor having the secondary winding to be exited by the duplex feeding winding type induction generator 13, a DC bus 22 connected to the DC side of the first power converter, a second power converter 23 connected with the DC bus and the power system, a bidirectional charger 31 having one end connected with the DC bus, and a power storage device 30 connected with the other end of the bidirectional charger. When the voltage of the power system deviates from a predetermined allowable range, the power storage device supplies power to the secondary winding of the rotor through the bidirectional charger and the first power converter, thus compensating for the voltage drop of the power system. COPYRIGHT: (C)2009,JPO&INPIT
摘要翻译：要解决的问题：为了提供双工馈线绕组型感应发电机的功率转换器，即使系统电压瞬时下降也能够稳定工作，而不将双工馈线绕组型感应发电机与系统隔离，连接风力发电系统。解决方案：功率转换器包括：第一功率转换器21，激励双馈馈线绕组型感应发电机13的转子的次级绕组，该双相馈电绕组型感应发电机13包括具有与电力系统连接的初级绕组的定子和具有次级绕组的转子由双相馈电绕组型感应发电机13退出，连接到第一电力转换器的DC侧的DC总线22，与DC总线和电力系统连接的第二电力转换器23，一端连接的双向充电器31 DC总线，以及与双向充电器的另一端连接的蓄电装置30。当电力系统的电压偏离预定的允许范围时，蓄电装置通过双向充电器和第一电力转换器向转子的次级绕组供电，从而补偿电力系统的电压降。版权所有（C）2009，JPO＆INPIT

9. 发明专利

JP2007252099A Power supply device 审中-公开
标题翻译：电源设备
公开(公告)号：JP2007252099A
公开(公告)日：2007-09-27
申请号：JP2006072452
申请日：2006-03-16
申请人： Ebara Densan Ltd , 株式会社荏原電産
发明人： OZAWA TAKAHIDE , TSUKAGOSHI ISAO , TAI MASA
IPC分类号： H02P9/00 , H02M7/48
摘要： PROBLEM TO BE SOLVED: To provide a power supply device capable of improving reduction of the number of controllers while maintaining high reliability in a safety monitoring function as a whole, in the power supply device which has a power generator including the controller and a power converter including the controller. SOLUTION: In the power supply device 1 which has the power generator 10 including the controller 20 and the power converter 30 including the controller 40, the controller 40 of the power converter is provided with the safety monitoring function of the power generator 10. Further, the controller 20 of the power generator 10 is provided with the safety monitoring function of the power converter 30. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提供一种电源装置，其能够在保持安全监控功能的整体的高可靠性的同时，能够改善控制器的数量的减少，在具有包括控制器的发电机的电源装置中，包括控制器的电力转换器。
解决方案：在具有包括控制器20的发电机10和包括控制器40的电力转换器30的电源装置1中，电力转换器的控制器40具有发电机10的安全监控功能此外，发电机10的控制器20具有电力转换器30的安全监控功能。版权所有（C）2007，JPO＆INPIT

10. 发明专利

JP2008015899A System interconnection power conditioner 审中-公开
标题翻译：系统互连功率调节器
公开(公告)号：JP2008015899A
公开(公告)日：2008-01-24
申请号：JP2006188125
申请日：2006-07-07
申请人： Ebara Densan Ltd , 株式会社荏原電産
发明人： NINOMIYA HIRONORI , KOMATSU TAKAARI , TAI MASA
IPC分类号： G05F1/67 , H02M3/155 , H02M7/00
摘要： PROBLEM TO BE SOLVED: To provide a system interconnection power conditioner capable of stably and efficiently outputting ac power to a system even though an operating point of a solar panel fluctuates by maximum output power tracking control of the solar panel and even though a load condition fluctuates. SOLUTION: The system interconnection power conditioner is provided with a boosting chopper 12 for adjusting output voltage of the solar pane 11 to voltage to be maximum output power of the solar panel, and an inverter 15 for outputting ac power interconnected to the system with the voltage boosted by the boosting chopper as ac link voltage, wherein the inverter controls the ac link voltage at a constant level. The inverter 15 performs feedback control of inverter output current so as to make the ac link voltage constant and performs feedback control of reactive power components of inverter output current so as to be zero. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使太阳能电池板的工作点通过太阳能电池板的最大输出功率跟踪控制而波动，也能够提供能够稳定且有效地向系统输出交流电力的系统互联功率调节器，负载条件波动。解决方案：系统互连功率调节器设置有用于将太阳能电池板11的输出电压调节为太阳能电池板的最大输出功率的升压斩波器12，以及用于输出与系统互连的交流电力的逆变器15 由升压斩波器提升的电压作为交流电压，其中变频器将交流链路电压控制在恒定水平。逆变器15进行逆变器输出电流的反馈控制，使交流电压恒定，对变频器输出电流的无功功率分量进行反馈控制，使其为零。版权所有（C）2008，JPO＆INPIT

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