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公开(公告)号：US20040222776A1
公开(公告)日：2004-11-11
申请号：US10802936
申请日：2004-03-18
发明人： Chin-Chang Wu , Hung-Liang Chou , Ya-Tsung Feng , Chi-Nan Hsieh , Yao-Jen Chang
IPC分类号： H02M005/45 , G05F001/40
CPC分类号： H02M3/1582 , H02M7/797 , H02M2001/007
摘要： A bi-directional dc/dc power converter having a neutral terminal includes a first dc voltage terminal set and a second dc voltage terminal set. When the direction of power flow is from the first dc voltage terminal set to the second dc voltage terminal set, the Output voltage of power converter is the double of the input dc voltage. When the power flow direction is in reverse from the second dc voltage terminal set to the first dc voltage terminal set, the output voltage of power converter is half of the input dc voltage in this power flow direction.
摘要翻译： 具有中立端子的双向dc / dc电力转换器包括第一直流电压端子组和第二直流电压端子组。 当功率流的方向从第一直流电压端子设置到第二直流电压端子组时，功率转换器的输出电压是输入直流电压的两倍。 当功率流动方向与设定为第一直流电压端子组的第二直流电压端子相反时，功率转换器的输出电压在该功率流动方向上为输入直流电压的一半。
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公开(公告)号：US20040076027A1
公开(公告)日：2004-04-22
申请号：US10434207
申请日：2003-05-09
发明人： Chin-Chang Wu , Hurng-Liang Chou , Nan-Ying Shen , Yao-Jen Chang
IPC分类号： H02M001/00
CPC分类号： H02M3/1584
摘要： A control method for the parallel-connected power converters includes a control circuit comprising a voltage feedback circuit and a current feed-forward circuit. The voltage feedback circuit, consisting of a voltage regulated control circuit and a waveform control circuit, is used to control the power converter's output voltage with constant amplitude and low total harmonic distortion. By adjusting the gain of waveform control circuit, it can regulate the current distribution among the parallel-connected power converters. The current feed-forward circuit separates the power converter's output current into the fundamental component and the harmonic component, and amplifies them by different gain. The amplified fundamental component acts as a fundamental resistor to suppress the circulating current among the parallel-connected power converters, and the amplified harmonic component acts as a harmonic damper for preventing from high frequency oscillation generated by the L-C filter.
摘要翻译： 并联电力转换器的控制方法包括：电压反馈电路和电流前馈电路的控制电路。 电压反馈电路由电压调节控制电路和波形控制电路组成，用于以恒定幅度和低总谐波失真来控制功率转换器的输出电压。 通过调整波形控制电路的增益，可以调节并联电源转换器之间的电流分布。 电流前馈电路将功率转换器的输出电流分为基波分量和谐波分量，并通过不同的增益进行放大。 放大的基波分量作为基波电阻来抑制并联功率转换器中的循环电流，并且放大的谐波分量作为用于防止由L-C滤波器产生的高频振荡的谐波阻尼器。
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公开(公告)号：US20040155633A1
公开(公告)日：2004-08-12
申请号：US10626519
申请日：2003-07-25
发明人： Chin-Chang Wu , Hurng-Liang Chou , Wen-Pin Hsu , Yao-Jen Chang
IPC分类号： G05F001/10
CPC分类号： G05F1/70
摘要： A hybrid reactive power compensation device comprises a passive type reactive power compensator and an active type reactive power compensator serially connected thereto. The passive type reactive power compensator is an AC power capacitor adapted to provide the reactive power that reduces capacity of the active type reactive power compensator. The active type reactive power compensator is consisted of a power converter, a DC capacitor, a high-frequency ripple filter and a controller. The hybrid reactive power compensation device can supply a linearly adjustable reactive power within a predetermined range, and is adapted to provide with a serial-connected virtual harmonic damping. Therefore, it can avoid the destruction of AC power capacitor caused by the power resonance.
摘要翻译： 混合无功功率补偿装置包括无源式无功功率补偿器和与其串联的有源型无功功率补偿器。 无源型无功功率补偿器是适于提供无功功率的AC功率电容器，其降低有源型无功功率补偿器的容量。 有源型无功补偿器由功率转换器，直流电容器，高频纹波滤波器和控制器组成。 混合无功补偿装置可以在预定范围内提供线性可调的无功功率，并且适于提供串联连接的虚拟谐波阻尼。 因此，可以避免由功率谐振引起的交流电源电容的破坏。
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公开(公告)号：US20040090212A1
公开(公告)日：2004-05-13
申请号：US10646755
申请日：2003-08-25
发明人： Chin-Chang Wu , Hurng-Liang Chou , Wen-Pin Hsu , Yao-Jen Chang
IPC分类号： G05F001/70
CPC分类号： G05F1/70
摘要： A hybrid reactive power compensation device comprises a passive type reactive power compensator and an active type reactive power compensator serially connected thereto. The passive type reactive power compensator is an AC power capacitor adapted to provide the reactive power that reduces capacity of the active type reactive power compensator. The active type reactive power compensator is consisted of a power converter, a DC capacitor, a high-frequency ripple filter and a controller. The hybrid reactive power compensation device can supply a linearly adjustable reactive power within a predetermined range, and is adapted to supply a current with a nearly sinusoidal waveform. Therefore, it can avoid the destruction of AC power capacitor caused by the power resonance.
摘要翻译： 混合无功功率补偿装置包括无源式无功功率补偿器和与其串联的有源型无功功率补偿器。 无源型无功功率补偿器是适于提供无功功率的AC功率电容器，其降低有源型无功功率补偿器的容量。 有源型无功补偿器由功率转换器，直流电容器，高频纹波滤波器和控制器组成。 混合无功补偿装置可以在预定范围内提供可线性调节的无功功率，并且适于提供具有接近正弦波形的电流。 因此，可以避免由功率谐振引起的交流电源电容的破坏。
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公开(公告)号：US20030184926A1
公开(公告)日：2003-10-02
申请号：US10331765
申请日：2002-12-31
发明人： Chin-Chang Wu , Hurng-Liang Chou , Kuen-Der Wu , Yao-Jen Chang
IPC分类号： H02H003/00
摘要： A hybrid switch module comprises an auxiliary thyristor switch turning on/off an AC power capacitor, an electromagnetic switch connected parallel thereto, and a control circuit outputting control signals with time difference thereto. During the turn on process, a control signal turns on the thyristor switch while the voltage across the hybrid switch module at the zero crossing point, and then turns on the electromagnetic switch that minimizes an inrush current on the energized capacitor. The thyristor is disabled as the electromagnetic switch is turned on. During the turn off process, a control signal turns on the thyristor switch, and then the electromagnetic switch is turned off to avoid an electric arc due to the voltage across the electromagnetic switch. The driving signal of the thyristor switch is disabled after the electromagnetic switch is completely turned off, and the thyristor switch is turned off while current passing through is at the zero crossing point.
摘要翻译： 混合开关模块包括一个辅助晶闸管开关，用于接通/关闭交流电力电容器，一个并联连接的电磁开关，以及一个控制电路输出时差的控制信号。 在接通过程中，控制信号打开晶闸管开关，同时在过零点处混合开关模块上的电压，然后打开电磁开关，使通电电容上的浪涌电流最小化。 当电磁开关打开时，晶闸管被禁止。 在关闭过程中，控制信号打开晶闸管开关，然后关闭电磁开关，以避免由于电磁开关两端的电压引起的电弧。 电磁开关完全关闭后，晶闸管开关的驱动信号被禁止，当电流通过时，晶闸管开关断开，处于过零点。
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公开(公告)号：US20040090214A1
公开(公告)日：2004-05-13
申请号：US10424707
申请日：2003-04-29
发明人： Hurng-Liang Chou , Chin-Chang Wu , Wen-Pin Wu , Yao-Jen Chang
IPC分类号： G05F001/70
CPC分类号： G05F1/70
摘要： A hybrid reactive power compensation device comprises a passive type reactive power compensator and an active type reactive power compensator serially connected thereto. The passive type reactive power compensator is an AC power capacitor adapted to provide the reactive power that reduces capacity of the active type reactive power compensator. The active type reactive power compensator is consisted of a power converter, a DC capacitor, a high-frequency ripple filter and a controller. The hybrid reactive power compensation device can supply a linearly adjustable reactive power within a predetermined range, and the supplied current is approximated to be a sinusoidal waveform. Therefore, it can avoid the destruction of AC power capacitor caused by the power resonance.
摘要翻译： 混合无功功率补偿装置包括无源式无功功率补偿器和与其串联的有源型无功功率补偿器。 无源型无功功率补偿器是适于提供无功功率的AC功率电容器，其降低有源型无功功率补偿器的容量。 有源型无功补偿器由功率转换器，直流电容器，高频纹波滤波器和控制器组成。 混合无功补偿装置可以在预定范围内提供线性可调无功功率，并且所提供的电流近似为正弦波形。 因此，可以避免由功率谐振引起的交流电源电容的破坏。
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公开(公告)号：US20040066179A1
公开(公告)日：2004-04-08
申请号：US10420812
申请日：2003-04-23
IPC分类号： G05F001/10
CPC分类号： H02M3/155 , H02J9/062 , H02M1/36 , H02M2001/0022 , H02M2001/0093
摘要： A DC/DC boost converter is consisted of an inductor, a power electronic switch, a control circuit, a first diode, a second diode and a capacitor. The power electronic switch is not operated if the input DC voltage is higher than the specified low reference DC voltage and it is regarded as the normal input DC voltage. If the input DC voltage is lower than the specified low reference DC voltage and this condition is regarded as the abnormal input DC voltage, the power electronic switch is controlled by pulse width modulation control and a dc voltage across the capacitor is created. Then, the output DC voltage is the summation of the input DC voltage and the capacitor voltage. Thus, the inventive DC/DC boost converter operates only when the input DC voltage is abnormal, thereby avoid additional power loss in the duration of normal input DC voltage.
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