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公开(公告)号：US06448489B2
公开(公告)日：2002-09-10
申请号：US09842923
申请日：2001-04-27
IPC分类号： H01L3104
CPC分类号： H02J7/35 , Y02B10/12 , Y02B10/14 , Y02B10/20 , Y10S136/291 , Y10S136/293 , Y10S323/906
摘要： A solar generation system includes a standard solar cell string and a substandard solar cell string. A DC voltage output from the substandard solar cell string is boosted by a booster unit to the level of the DC voltage output from the standard solar cell string, and the DC voltage from the standard solar cell string and the boosted DC voltage are applied to a DC/AC inverter, whereby an AC power is obtained, which is supplied to a utility power supply.
摘要翻译： 太阳能发电系统包括标准的太阳能电池串和不合标准的太阳能电池串。 从不合标准的太阳能电池串输出的直流电压由升压单元升压到从标准太阳能电池串输出的直流电压的电平，将来自标准太阳能电池串的直流电压和升压的直流电压施加到 DC / AC逆变器，由此获得供给公用电源的AC电力。
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2.发明授权Device and method for controlling inverter performing feedback control to suppress periodic component and unsteady component of error 失效用于控制逆变器执行反馈控制以抑制周期性分量和不稳定误差分量的装置和方法
公开(公告)号：US5914866A
公开(公告)日：1999-06-22
申请号：US988124
申请日：1997-12-10
CPC分类号： H02M7/4807
摘要： An inverter-control device includes a subtractor for detecting an error between a waveform of a reference current signal generated in synchronization with a waveform of an inverter output current signal and the inverter output current signal, a delay portion for delaying by a prescribed time period a signal obtained by amplifying and removing high frequency component by filtering the error, an error waveform integrating portion for integrating the delayed signal f' output from delay portion, a proportional control portion for amplifying the error, and an adding portion for adding an error amplified signal output from the proportional control portion and an inverter driving waveform pattern output from the error waveform integrating portion.
摘要翻译： 逆变器控制装置包括：减法器，用于检测与逆变器输出电流信号的波形同步产生的参考电流信号的波形与逆变器输出电流信号之间的误差，延迟预定时间段a的延迟部分 通过滤波误差来放大和去除高频分量获得的信号;用于积分从延迟部分输出的延迟信号f'，用于放大误差的比例控制部分的误差波形积分部分和用于将误差放大信号相加的加法部分 从比例控制部分输出的信号和从误差波形积分部分输出的反相器驱动波形图形。
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3.发明授权Method and apparatus for controlling a DC to AC inverter system by a plurality of pulse-width modulated pulse trains 失效通过多个脉冲宽度调制的脉冲串来控制DC到AC逆变器系统的方法和装置
公开(公告)号：US5625539A
公开(公告)日：1997-04-29
申请号：US438551
申请日：1995-05-10
CPC分类号： H02M7/4807
摘要： A pulse train pulse-width modulated by PWM control using a sine-wave signal and a carrier signal is inverted alternately in positive-negative polarity. With a high-frequency AC signal obtained by the inversion, a primary side of a transformer for insulating input and output from each other is excited. This arrangement makes it possible to employ a high-frequency transformer which has a capacity ratio of about 1/30 and a weight ratio of about 1/20 relative to a commercial-frequency transformer, instead of using it. Thus, an inverter apparatus can be reduced in size and weight as compared with the system using the power-frequency transformer. A sine-wave AC waveform with substantially less distortion similar to the waveform output by the conventional PWM control can be obtained with a simple construction.
摘要翻译： 通过使用正弦波信号和载波信号的PWM控制调制的脉冲串脉冲串以正负极性交替地反转。 利用通过反相获得的高频AC信号，激励用于彼此绝缘输入和输出的变压器的初级侧。 这种布置使得可以使用具有大约+ E，fra 1/30 + EE的容量比和大约+ E，fra 1/20 + EE的相对于商用频率变压器的重量比的高频变压器 ，而不是使用它。 因此，与使用电力 - 频率变换器的系统相比，逆变器装置的尺寸和重量可以减小。 通过简单的结构可以获得具有类似于常规PWM控制输出的波形的正常波形的正弦波交流波形。
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4.发明授权Inverter apparatus islanding operation detecting method and inverter apparatus capable of surely detecting an islanding operation with a simple construction 失效逆变器装置分离操作检测方法和逆变器装置，能够以简单的结构可靠地检测孤岛作业公开(公告)号：US06172889B2
公开(公告)日：2001-01-09
申请号：US08865349
申请日：1997-05-29
IPC分类号： H02M324
CPC分类号： H02J3/38 , H02J2003/388
摘要： There is provided an inverter apparatus islanding operation detecting method capable of surely detecting an islanding operation with a simple construction. A distortion for causing a variation in an output frequency of an inverter apparatus in an islanding operation stage is applied to an inverter output waveform. With this arrangement, even when the inverter apparatus is disconnected from an AC power system in a state in which a power factor of a load impedance is proximate to one, a frequency variation is generated in an inverter output, thereby ensuring detection of the islanding operation.
摘要翻译： 提供了一种能够以简单的结构可靠地检测孤岛操作的逆变器装置孤岛作战检测方法。 在变换器输出波形中施加用于使孤岛化运行级中的逆变器装置的输出频率发生变化的失真。 由此，即使在负载阻抗的功率因数接近于1的状态下，在逆变器装置与交流电力系统断开连接的情况下，在逆变器输出中产生频率变动，从而确保了孤岛动作的检测 。
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公开(公告)号：US5719758A
公开(公告)日：1998-02-17
申请号：US770509
申请日：1996-12-20
CPC分类号： G05F1/67 , H02M7/4807 , Y02E10/58 , Y10S323/906
摘要： A pulse width of a pulse train signal used for PWM (pulse width modulation) control is monitored. When a variation of the pulse width substantially disappears within a specified time, it is determined that an operating point on an output characteristic curve of a photovoltaic array is located on the open-circuit voltage side of a maximum power point. When the variation of the pulse width does not disappear after the elapse of the specified time, it is determined that the operating point is located on the short-circuit current side of the maximum power point. Based on the determination result, the inverter control is performed such that the operating point follows the maximum power point.
摘要翻译： 监视用于PWM（脉冲宽度调制）控制的脉冲串信号的脉冲宽度。 当脉冲宽度的变化在规定时间内基本消失时，确定光伏阵列的输出特性曲线上的工作点位于最大功率点的开路电压侧。 当脉冲宽度的变化在规定时间过去后不消失时，确定工作点位于最大功率点的短路电流侧。 基于判定结果，进行逆变器控制，使得工作点跟随最大功率点。
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6.发明授权Inverter control method and inverter control device performing feedback control by suppressing delay 失效逆变器控制方法和逆变器控制装置通过抑制延迟进行反馈控制
公开(公告)号：US5668713A
公开(公告)日：1997-09-16
申请号：US729583
申请日：1996-10-11
CPC分类号： H02M7/4807 , H02M7/53871
摘要： In a method of controlling an inverter for adjusting a periodic inverter output waveform to a desired periodic waveform, an error waveform pattern between an inverter output waveform of the present prescribed period and a desired periodic waveform generated in synchronization with the prescribed period is formed, and the error waveform pattern is added to an inverter driving waveform pattern in the last prescribed period, whereby an inverter driving waveform pattern is updated.
摘要翻译： 在将周期性逆变器输出波形调整为期望周期波形的逆变器的控制方法中，形成本规定期间的逆变器输出波形与规定期间同步生成的期望周期波形之间的误差波形图案， 误差波形图案被添加到最后规定期间的逆变器驱动波形图案，由此更新逆变器驱动波形图案。
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公开(公告)号：US5493155A
公开(公告)日：1996-02-20
申请号：US351048
申请日：1994-11-28
申请人： Mitsuo Okamoto , Hirokazu Kodama , Tsukasa Takebayashi , Kouji Minamino , Yoshikazu Tsuyuguchi , Shigeru Ohmori
发明人： Mitsuo Okamoto , Hirokazu Kodama , Tsukasa Takebayashi , Kouji Minamino , Yoshikazu Tsuyuguchi , Shigeru Ohmori
CPC分类号： H02J7/35 , H02M3/33546 , Y02E10/566 , Y10S323/906 , Y10T307/511 , Y10T307/615 , Y10T307/625
摘要： This electric power supply system includes an air conditioner serving as load, a solar photovoltaic cell for supplying power to the air conditioner, and a system power control circuit and further including a commercial power source for use in combination with the solar photovoltaic cell for supplying additional power when insufficient, power is supplied from the solar photovoltaic cell to the air conditioner. In an operation state of the air conditioner, the system power control circuit operates to regulate an operating point of the solar photovoltaic cell and variably regulate the supplied power from the solar photovoltaic cell while comparing required power of the air conditioner with the supplied power from the solar photovoltaic cell.
摘要翻译： 该电力供给系统包括作为负载的空调机，向空调机供电的太阳能光伏电池，以及系统功率控制电路，还包括与太阳能光伏电池组合使用的商用电源，用于提供额外的 功率不足时，从太阳能光伏电池向空调供电。 在空调器的操作状态下，系统功率控制电路用于调节太阳能光伏电池的工作点，并且可以调节来自太阳能光伏电池的供电功率，同时将空调的所需功率与来自 太阳能光伏电池。
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公开(公告)号：US06570270B2
公开(公告)日：2003-05-27
申请号：US10120831
申请日：2002-04-12
申请人： Tsukasa Takebayashi
发明人： Tsukasa Takebayashi
IPC分类号： H02J100
CPC分类号： H02J3/383 , H02M5/45 , H02M7/4807 , Y02E10/563 , Y10T307/702
摘要： An inverter unit converts power from a solar battery into AC power and interconnects the AC power with a utility power supply. A control circuit manages the time during which the inverter unit stops. If the time is equal to or longer than a predetermined time, it is determined that one day has passed. Data for one day stored in a memory is accordingly cleared and data is newly stored in the memory.
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