Electric power control apparatus, power generation system and power grid system
    1.
    发明申请
    Electric power control apparatus, power generation system and power grid system 失效
    电力控制装置,发电系统和电网系统

    公开(公告)号:US20090069950A1

    公开(公告)日:2009-03-12

    申请号:US12290138

    申请日:2008-10-29

    IPC分类号: H02J7/34

    摘要: An electric power control apparatus outputs output from a power generation apparatus to a power system has a power converter that converts power output from the power generation apparatus and a power storage apparatus that stores output from the power generation apparatus or output from the power converter as well as discharges stored electric power as necessary detects an amount of electric power generated at the power generation apparatus within a predetermined time period, sets an output pattern of the electric power control apparatus in a next predetermined time period based on the amount of electric power of each predetermined time period, and controls the output of the electric power control apparatus in accordance with the output pattern. By so doing, for example, even where the output from the power generation apparatus fluctuates, the amount of electric power output to the power system is decided in advance, and electric power equivalent to the difference between the predetermined amount and the output amount is stored in a power storage apparatus or discharged from the power storage apparatus.

    摘要翻译: 将发电装置的输出输出到电力系统的电力控制装置具有:功率转换器,其将从发电装置输出的功率转换为功率转换器;以及蓄电装置,其从发电装置输出或从功率转换器输出 作为必要时的放电储存电力,在预定时间内检测在发电装置产生的电力量,基于各电力的功率量,在下一个预定时间段内设定电力控制装置的输出模式 并且根据输出模式控制电力控制装置的输出。 通过这样做,例如即使在发电装置的输出发生波动的情况下,预先输出到电力系统的电力的量,并且存储与预定量和输出量之间的差相当的电力 在蓄电装置中或从蓄电装置排出。

    Method of reducing leakage current in power supply systems
    3.
    发明授权
    Method of reducing leakage current in power supply systems 失效
    降低供电系统漏电流的方法

    公开(公告)号:US06611441B2

    公开(公告)日:2003-08-26

    申请号:US10077816

    申请日:2002-02-20

    IPC分类号: H02M7122

    摘要: In a power supply system for converting the output of a DC power supply having an earth capacitance to AC power, an input voltage from an input-voltage detector and an intermediate voltage from an intermediate-voltage detector are input to an input-ripple controller. The latter calculates the difference between ripple voltages of the two voltages. The input-ripple controller adjusts the size of a ripple command value, which indicates the ripple current that is to be input to a converter circuit, so as to null the difference between the ripple voltages. Furthermore, using a ripple reference waveform having a DC level, the input-ripple controller generates a ripple current waveform so as to null the average value of a full-wave rectified waveform synchronized to the output of an inverter circuit, and outputs the generated ripple current waveform to an output calculator. The output calculator adds the DC current command from the input-voltage controller and the ripple current waveform from the input ripple controller to thereby generate an output current waveform, which is output to a converter circuit driver.

    摘要翻译: 在用于将具有接地电容的直流电源的输出转换成交流电力的电源系统中,来自输入电压检测器的输入电压和来自中间电压检测器的中间电压被输入到输入纹波控制器。 后者计算两个电压的纹波电压之间的差异。 输入纹波控制器调整纹波指令值的大小,该值指示要输入到转换器电路的纹波电流,以消除纹波电压之间的差异。 此外,使用具有直流电平的脉动波形参考波形,输入纹波控制器产生纹波电流波形,使得与逆变器电路的输出同步的全波整流波形的平均值为零,并输出产生的纹波 电流波形输出到计算器。 输出计算器从输入电压控制器添加直流电流指令和来自输入纹波控制器的纹波电流波形,从而生成输出到转换器电路驱动器的输出电流波形。

    Power control apparatus for solar power generation system
    4.
    发明授权
    Power control apparatus for solar power generation system 失效
    太阳能发电系统功率控制装置

    公开(公告)号:US5923158A

    公开(公告)日:1999-07-13

    申请号:US919445

    申请日:1997-08-28

    CPC分类号: G05F1/67 Y02E10/58

    摘要: In a power control apparatus of a solar power generation system for converting power generated by a solar panel and supplying the converted power to a load, the output voltage and output current of the solar panel are sensed, and, under ordinary conditions, MPPT control is performed so that the solar cells will operate at a maximum output point. If the output power of the solar panel exceeds a predetermined power, a power conversion unit is controlled so as to raise the output voltage of the solar panel, thereby limiting the output power of the solar panel. As a result, excessive power is prevented from being output by the power control apparatus.

    摘要翻译: 在太阳能发电系统的功率控制装置中,用于转换由太阳能电池板产生的功率并将转换的功率提供给负载,从而检测太阳能电池板的输出电压和输出电流,并且在常规条件下MPPT控制为 执行,使得太阳能电池将在最大输出点操作。 如果太阳能电池板的输出功率超过预定功率,则控制电力转换单元以提高太阳能电池板的输出电压,从而限制太阳能电池板的输出功率。 结果,防止电力控制装置输出过大的功率。

    Power converting apparatus, control method therefor, and solar power generation apparatus
    5.
    发明授权
    Power converting apparatus, control method therefor, and solar power generation apparatus 失效
    电力转换装置及其控制方法以及太阳能发电装置

    公开(公告)号:US07079406B2

    公开(公告)日:2006-07-18

    申请号:US09818604

    申请日:2001-03-28

    IPC分类号: H02H7/122

    摘要: The object is to reliably detect a ground fault of a solar battery. To detect a ground fault position to take an efficient measure against the ground fault, DC power input from a solar battery is converted into AC power and supplied to a system. In a system interconnection inverter (utility connected inverter) having non-insulated input and output, the input voltage of a converter circuit and/or the intermediate voltage between the converter circuit and an inverter circuit are varied to control the potential to ground at each portion of the solar battery to a value other than a value close to zero.

    摘要翻译: 目的是可靠地检测太阳能电池的接地故障。 为了检测接地故障位置以对接地故障进行有效的测量,将从太阳能电池输入的直流电力转换为交流电并提供给系统。 在具有非绝缘输入和输出的系统互连逆变器(公用连接逆变器)中,改变转换器电路的输入电压和/或转换器电路和逆变器电路之间的中间电压,以控制每个部分的接地电位 的太阳能电池的值不是接近于零的值。

    Electric power control apparatus, power generation system and power grid system
    6.
    发明申请
    Electric power control apparatus, power generation system and power grid system 失效
    电力控制装置,发电系统和电网系统

    公开(公告)号:US20050234599A1

    公开(公告)日:2005-10-20

    申请号:US11099580

    申请日:2005-04-06

    摘要: An electric power control apparatus outputs output from a power generation apparatus to a power system has a power converter that converts power output from the power generation apparatus and a power storage apparatus that stores output from the power generation apparatus or output from the power converter as well as discharges stored electric power as necessary detects an amount of electric power generated at the power generation apparatus within a predetermined time period, sets an output pattern of the electric power control apparatus in a next predetermined time period based on the amount of electric power of each predetermined time period, and controls the output of the electric power control apparatus in accordance with the output pattern. By so doing, for example, even where the output from the power generation apparatus fluctuates, the amount of electric power output to the power system is decided in advance, and electric power equivalent to the difference between the predetermined amount and the output amount is stored in a power storage apparatus or discharged from the power storage apparatus.

    摘要翻译: 将发电装置的输出输出到电力系统的电力控制装置具有:功率转换器,其将从发电装置输出的功率转换为功率转换器;以及蓄电装置,其从发电装置输出或从功率转换器输出 作为必要时的放电储存电力,在预定时间内检测在发电装置产生的电力量,基于各电力的功率量,在下一个预定时间段内设定电力控制装置的输出模式 并且根据输出模式控制电力控制装置的输出。 通过这样做,例如即使在发电装置的输出发生波动的情况下,预先输出到电力系统的电力的量,并且存储与预定量和输出量之间的差相当的电力 在蓄电装置中或从蓄电装置排出。

    Apparatus and method of detecting ground fault in power conversion system
    8.
    发明授权
    Apparatus and method of detecting ground fault in power conversion system 失效
    电力转换系统接地故障检测装置及方法

    公开(公告)号:US06927955B2

    公开(公告)日:2005-08-09

    申请号:US10252569

    申请日:2002-09-24

    CPC分类号: H02H3/337 H02H7/1222

    摘要: In a power conversion system having a DC power supply which has an almost fixed DC voltage to ground and a predetermined stray capacitance to ground and outputs a DC power, and a power converter which converts the DC power output from the DC power supply into an AC power by switching, the phase of an AC voltage to ground generated in the DC power supply by switching is detected, the phase of an AC ground fault current that flows through the stray capacitance to ground and the ground fault resistance of the DC power supply is detected, and the difference between the two detected phases is compared with a predetermined threshold value, thereby determining a DC ground fault in the DC power supply. With this arrangement, the ground fault state of the DC power supply can more accurately be detected. In addition, the operation efficiency of the power conversion system can be increased.

    摘要翻译: 在具有直流电源的直流电源具有几乎固定的对地电压和对地的预定寄生电容并输出直流电力的电力转换系统中,以及将从直流电源输出的直流电力转换成交流电的电力转换器 通过开关切换,检测直流电源中通过开关产生的交流电压与地相的相位,流过接地电容的交流接地故障电流的相位和直流电源的接地故障电阻是 并且将两个检测到的相位之间的差与预定阈值进行比较,由此确定直流电源中的直流接地故障。 通过这种布置,可以更精确地检测直流电源的接地故障状态。 此外,可以提高电力转换系统的运行效率。

    Interconnection power converter and power generation apparatus using the same
    9.
    发明授权
    Interconnection power converter and power generation apparatus using the same 失效
    互联电源转换器和使用其的发电设备

    公开(公告)号:US06320769B2

    公开(公告)日:2001-11-20

    申请号:US09725819

    申请日:2000-11-30

    IPC分类号: H02H7122

    摘要: In a solar power generation apparatus using a solar battery having a relatively large ground capacitor and a power conditioner having a non-insulated input and output, a customer's ground fault interrupter may perform unwanted interruption due to a ground fault outside the customer's premises. To prevent this, when a ground fault is detected by a detector capable of detecting a ground fault within a shorter time than the customer's ground fault interrupter, the gate of inverter of the power conditioner is blocked, a switch is changed to an open state, and the input voltage of inverter is held at a voltage value higher than the peak value of the alternate current voltage of a power system until at least the switch changes to the open state.

    摘要翻译: 在使用具有相对大的接地电容器的太阳能电池和具有非绝缘输入和输出的功率调节器的太阳能发电装置中,客户的接地故障中断器可能由于客户住宅外部的接地故障而执行不期望的中断。 为了防止这种情况,当在比客户的接地故障中断器更短的时间内能够检测到接地故障的检测器检测到接地故障时,功率调节器的逆变器的门被阻止,开关变为打开状态, 并且逆变器的输入电压被保持在高于电力系统的交流电压的峰值的电压值,直到至少开关变为打开状态。

    Battery power supply device characteristic measuring apparatus and
measuring method
    10.
    发明授权
    Battery power supply device characteristic measuring apparatus and measuring method 失效
    电池供电装置特征测量装置及测量方法

    公开(公告)号:US5955885A

    公开(公告)日:1999-09-21

    申请号:US685540

    申请日:1996-07-24

    CPC分类号: G01R31/40 H02S50/10

    摘要: In order to accurately and stably measure the output characteristics of a battery power supply device, especially, a large-scale solar cell module by an equipment that requires only a size and cost equivalent to those of an apparatus used for measuring a small-scale module, the light-receiving surface of the solar cell module is divided into areas each including a bypass diode, the output characteristics upon light illumination in units of divided areas are measured, the measured characteristics are synthesized, and the influence of bypass diode characteristics is subtracted from the synthesized characteristics, thereby calculating the output characteristics of the solar cell module.

    摘要翻译: 为了准确且稳定地测量电池电源装置的输出特性,特别是通过仅需要与用于测量小型模块的装置的尺寸和成本相等的装置的大型太阳能电池模块 ,将太阳能电池模块的受光面分成包括旁路二极管的区域,测量以分割区域为单位的光照射时的输出特性,合成测量特性,并减去旁路二极管特性的影响 根据合成特性,计算太阳能电池模块的输出特性。