公开(公告)号：US5319534A

公开(公告)日：1994-06-07

申请号：US106850

申请日：1993-08-16

申请人： Michael B. Brennen

发明人： Michael B. Brennen

IPC分类号： H02J3/01 ,  H02M5/458 ,  H02M1/12

CPC分类号： H02J3/01 ,  Y02E40/40

摘要： The present invention provides an improved active power line conditioner which achieves a significant improvement in peak voltage regulation capability when compared with a similarly-sized device of the prior art. Enhanced peak voltage regulation capability is achieved by reducing the number of turns on the transformer winding connected to the series inverter. As a result, the AC regulation voltage induced across the transformer primary and added to or subtracted from the AC supply voltage will be capable of achieving higher peak levels of short duration. When a reduced-turns-ratio transformer is utilized according to the invention, variations of the AC supply voltage which are within the sinusoidal regulation range of a prior art active power line conditioner having a similarly-sized transformer, the output voltage will remain sinusoidal. When, however, the input voltage variation is outside of this sinusoidal regulation range, the reduced-turns-ratio transformer will create a peaking but nonsinusoidal AC output voltage. This allows rejection of higher magnitude input voltage disturbances of short duration.

摘要翻译： 本发明提供了一种改进的有源电力线调节器，与现有技术的类似尺寸的装置相比，其实现了峰值电压调节能力的显着改善。 通过减少连接到串联逆变器的变压器绕组的匝数可实现增强的峰值电压调节能力。 结果是，变压器初级并且被加到或从AC电源电压中减去的AC调节电压将能够实现较短的持续时间的更高的峰值电平。 当根据本发明使用匝数比变压器时，在具有相似尺寸的变压器的现有技术的有源电力线调节器的正弦调节范围内的AC电源电压的变化，输出电压将保持正弦。 然而，当输入电压变化超出该正弦调节范围时，匝数比变压器将产生峰值但非正弦交流输出电压。 这允许抑制较短持续时间的更高幅度的输入电压干扰。

公开(公告)号：US4172234A

公开(公告)日：1979-10-23

申请号：US880270

申请日：1978-02-23

申请人： Laszlo Gyugyi ,  Michael B. Brennen ,  Thomas H. Putman

发明人： Laszlo Gyugyi ,  Michael B. Brennen ,  Thomas H. Putman

IPC分类号： G05F1/70 ,  H02J3/18

CPC分类号： H02J3/1864 ,  Y02E40/12

摘要： A control circuit for a static VAR generator measures load power during consecutive half cycles of the source voltage. This information, together with load voltage and load current information is used to determine the firing angles of the VAR generator thyristors for providing compensating current for keeping the source current in phase with the source voltage and for balancing the source currents in a three-phase electrical system. The total computation time for determining the firing angles extends into the half cycle in which correction is to be applied beyond a fixed minimum firing angle.

摘要翻译： 用于静态VAR发生器的控制电路在源电压的连续半周期期间测量负载功率。 该信息与负载电压和负载电流信息一起用于确定用于提供补偿电流的VAR发生器晶闸管的触发角，以保持源电流与源电压同相并且用于平衡三相电气中的源电流 系统。 用于确定触发角的总计算时间延伸到半周期，其中校正将被施加超过固定的最小触发角。

公开(公告)号：US4047097A

公开(公告)日：1977-09-06

申请号：US677202

申请日：1976-04-15

申请人： Laszlo Gyugyi ,  Eric J. Stacey ,  Michael B. Brennen

发明人： Laszlo Gyugyi ,  Eric J. Stacey ,  Michael B. Brennen

IPC分类号： G05F1/70 ,  H02J3/18

CPC分类号： H02J3/1864 ,  Y02E40/12

摘要： A static VAR generator is taught for use with a source of electrical power and a rapidly varying load. The static VAR generator comprises thyristor switched inductors connected across a capacitor. The gate of the thyristor switch is fired each half cycle in accordance with a predetermined firing angle to provide sufficient inductive current to cancel a portion of the capacitive current to thus provide a net reactive current for the system served. This is done on a half cycle by half cycle basis. A main disconnect switch is connected in parallel with the series combination of a secondary disconnect switch, a diode and a large resistor. The latter combination is connected in series with the parallel combination of the compensating inductor and the compensating capacitor. The secondary disconnect switch is utilized to charge the capacitor to the peak voltage between lines of the electrical system prior to connecting the static VAR generator to the system or prior to disconnecting the static VAR generator from the system. Prior to a disconnecting or connecting operation an oscillating current is introduced between the compensating capacitor and the compensating inductor. This current is found to have the same frequency phase, wave shape and amplitude as the voltage between the lines to which the static VAR generator is connected. The gate control for the thyristor is utilized to fix the phase difference between the oscillating current and the alternating voltage of the system at or near zero. The oscillating voltage caused by the oscillating current is thus equal in phase, frequency, wave shape and magnitude to the alternating voltage of the system. Consequently the main disconnect switch can be opened or closed as desired with zero electrical potential thereacross.

摘要翻译： 教导静态VAR发生器用于电源和快速变化的负载。 静态VAR发生器包括连接在电容器上的晶闸管开关电感器。 晶闸管开关的栅极根据预定的触发角度每半个周期被烧，以提供足够的感应电流来消除电容电流的一部分，从而为所服务的系统提供净无功电流。 这是以半个周期为基础进行的。 主断路开关与二次断路开关，二极管和大电阻的串联组合并联。 后者的组合与补偿电感器和补偿电容器的并联组合串联连接。 在将静态VAR发生器连接到系统之前或者在将静态VAR发生器从系统断开之前，二次断开开关用于将电容器充电到电气系统的线路之间的峰值电压。 在断开或连接操作之前，在补偿电容器和补偿电感器之间引入振荡电流。 发现该电流具有与静态VAR发生器连接的线路之间的电压相同的频率相位，波形和振幅。 晶闸管的栅极控制用于将系统的振荡电流和交流电压之间的相位差固定在零或接近零。 振荡电流产生的振荡电压在相位，频率，波形和幅度方面与系统的交流电压相等。 因此，主切断开关可根据需要打开或关闭，其中电位为零。

公开(公告)号：US5384696A

公开(公告)日：1995-01-24

申请号：US969932

申请日：1992-10-30

申请人： Steven A. Moran ,  Michael B. Brennen

发明人： Steven A. Moran ,  Michael B. Brennen

IPC分类号： H02J3/01 ,  H02J3/18 ,  H02M1/12 ,  G05F1/70 ,  H02M5/40

CPC分类号： H02J3/01 ,  H02J3/1814 ,  Y02E40/18 ,  Y02E40/40

摘要： An improved active power line conditioner is disclosed. A series inverter is controlled by a series filter controller which performs synchronous transformations on a load current to generate a series filter feedforward signal corresponding to the fundamental components of the load current. The series filter controller also generates a series filter reference signal corresponding to a negative sequence fundamental output voltage. The series filter feedforward signal and the series filter reference signal are combined to form a series filter compensation signal. The series filter compensation signal is applied to the series inverter to generate sinusoidal input currents, with negative sequence fundamental output voltage compensation, for a non-linear load. A parallel inverter is controlled by a parallel filter controller which performs synchronous transformations to generate a parallel filter feedforward signal corresponding to the harmonic ripple components of the load current. The parallel filter controller also generates a parallel filter reference signal corresponding to a negative sequence fundamental source current. The parallel filter feedforward signal and the parallel filter reference signal are combined to form a parallel filter compensation signal. The parallel filter compensation signal is applied to the parallel inverter to generate sinusoidal voltages, with source current negative sequence fundamental compensation, for the non-linear load.

摘要翻译： 公开了一种改进的有源电力线调节器。 串联逆变器由串联滤波器控制器控制，串联滤波器控制器对负载电流进行同步变换，以产生与负载电流的基波分量对应的串联滤波器前馈信号。 串联滤波器控制器还产生对应于负序基本输出电压的串联滤波器参考信号。 串联滤波器前馈信号和串联滤波器参考信号组合形成串联滤波器补偿信号。 串联滤波器补偿信号应用于串联逆变器，以产生正弦输入电流，具有负序基波输出电压补偿，用于非线性负载。 并联逆变器由并行滤波器控制器控制，该并行滤波器控制器执行同步变换以产生对应于负载电流的谐波波动分量的并行滤波器前馈信号。 并行滤波器控制器还产生对应于负序基波源电流的并行滤波器参考信号。 并联滤波器前馈信号和并行滤波器参考信号被组合以形成并行滤波器补偿信号。 并联滤波器补偿信号被施加到并联逆变器，以产生用于非线性负载的源电流负序基波补偿的正弦电压。

公开(公告)号：US5319535A

公开(公告)日：1994-06-07

申请号：US108261

申请日：1993-08-19

申请人： Michael B. Brennen

发明人： Michael B. Brennen

IPC分类号： H02J3/01 ,  H02M5/458 ,  H02M1/12

CPC分类号： H02J3/01 ,  Y02E40/40

摘要： The present invention provides an APLC which has improved common-mode disturbance rejection capability when compared with similarly-sized devices constructed according to current teachings. The need for an isolation transformer is, in many cases, eliminated by the invention. The invention alters the coupling transformer of the series parallel APLC or the isolation inductor of the newly-proposed inductor-parallel APLC to create a balun effect in the high and low conductors of the electrical supply network. Particularly, first and second windings are substituted for the single winding of the transformer primary or the isolation inductor. These two windings are serially-connected on the high and low conductors, respectively, with appropriate polarity such that self-inductance values of each are additive. Low pass capacitors and surge protectors may also be added to further protect the APLC and the load.

摘要翻译： 本发明提供了一种APLC，当与根据当前教导构造的类似尺寸的装置相比时，其具有改进的共模干扰抑制能力。 在许多情况下，通过本发明消除了隔离变压器的需要。 本发明改变了串联并联APLC的耦合变压器或新提出的电感 - 并联APLC的隔离电感器，以在供电网络的高低导体中产生平衡 - 不平衡变压器效应。 特别地，第一和第二绕组代替变压器初级或隔离电感器的单个绕组。 这两个绕组分别在高导体和低导体上以适当的极性串联连接，使得各自的自感值是相加的。 还可以添加低通电容器和电涌保护器，以进一步保护APLC和负载。

公开(公告)号：US4188573A

公开(公告)日：1980-02-12

申请号：US892804

申请日：1978-04-03

申请人： Laszlo Gyugyi ,  Michael B. Brennen

发明人： Laszlo Gyugyi ,  Michael B. Brennen

IPC分类号： G05F1/70 ,  H02J3/18

CPC分类号： H02J3/1864 ,  Y02E40/12

摘要： A control circuit for a static VAR generator measures appropriate circuit variables during consecutive half cycles of line voltage. This information is utilized to determine the firing angles of the VAR generator thyristors for providing compensating current to the line for keeping the source current in phase with the source voltage, for balancing source current in three-phase electrical systems and for reducing the line voltage fluctuation. A time-related-error minimizer is provided in the control system of the VAR generator to reduce the deviation between the amount of compensating current which is predicted for proper compensation during a given half cycle and the actual amount of compensating current needed at the time of application. The error is related to the differential between the time of the calculation of the value of current needed and the time it is actually applied. In one case, an open loop-type computational technique is utilized to determine the required inductor current. In a second case, a feedback control for reducing error utilizes the desired or predicted current and the actual inductor current; and in a third case, the compensating error signal is indirectly determined by utilizing the difference between the instantaneous AC terminal voltage and its steady state average value. The error signal associated with the latter case is combined with the computed desired inductor current to reduce time related terminal voltage variations.

摘要翻译： 用于静态VAR发生器的控制电路在线电压的连续半周期期间测量适当的电路变量。 该信息用于确定VAR发生器晶闸管的触发角，用于向线路提供补偿电流，以保持源电流与源极电压同相，用于平衡三相电气系统中的电流源并减少线路电压波动 。 在VAR发生器的控制系统中提供时间相关误差最小化器，以减少在给定半周期期间为正确补偿预测的补偿电流量与在给定半周期期间所需的实际补偿电流量之间的偏差 应用。 误差与计算所需电流值与实际应用时间的差值有关。 在一种情况下，采用开环型计算技术来确定所需的电感电流。 在第二种情况下，用于减小误差的反馈控制利用期望的或预测的电流和实际的电感器电流; 在第三种情况下，通过利用瞬时AC端子电压与其稳态平均值之间的差异来间接地确定补偿误差信号。 与后一种情况相关的误差信号与计算出的所需电感器电流组合以减少与时间相关的端子电压变化。

公开(公告)号：US3989999A

公开(公告)日：1976-11-02

申请号：US535626

申请日：1974-12-23

申请人： Francis T. Thompson ,  Michael B. Brennen

发明人： Francis T. Thompson ,  Michael B. Brennen

IPC分类号： H02J3/18

CPC分类号： H02J3/1864 ,  Y02E40/12

摘要： An over current shutdown apparatus for protecting the power circuit of a static VAR generator flicker compensator. The apparatus incorporates a two stage current sensing means and attempts to provide system recovery by limiting the firing angles of thyristors in the flicker compensator for prescribed intervals.

摘要翻译： 一种用于保护静态VAR发生器闪烁补偿器的电源电路的过电流关断装置。 该装置包括两级电流检测装置，并尝试通过在闪烁补偿器中限制指定间隔内的晶闸管的触发角来提供系统恢复。

公开(公告)号：US5355295A

公开(公告)日：1994-10-11

申请号：US108262

申请日：1993-08-19

申请人： Michael B. Brennen

发明人： Michael B. Brennen

IPC分类号： H02J3/18 ,  H02M1/12 ,  H02M1/14

CPC分类号： H02J3/1814 ,  Y02E40/18

摘要： A series-parallel active power line conditioner is provide having improved peak voltage regulation capability when compared with the prior art. The DC energy level in the DC link between the series and parallel inverters is temporarily increased when the AC input voltage is not within the linear regulation range of the active power line conditioner. To effect this energy boosting function, control circuitry first determines the amount by which the average value of the AC input voltage is without the linear regulation range of the active power line conditioner. This information is then utilized to control the parallel inverter such that the DC energy level in the link is proportionally increased. A preselected maximum DC energy level is preferably chosen such that excessive AC input voltage variations will not cause further increases in the DC energy level. In presently preferred embodiments, this maximum DC energy level is twice the level nominally maintained when the AC input voltages fall within the sinusoidal regulation range of the active power line conditioner.

摘要翻译： 与现有技术相比，串并联有源电力线调节器具有改进的峰值电压调节能力。 当AC输入电压不在有源电力线调节器的线性调节范围内时，串联和并联逆变器之间的直流链路中的直流能级临时增加。 为了实现该能量提升功能，控制电路首先确定AC输入电压的平均值没有有功电力线调节器的线性调节范围的量。 然后利用该信息来控制并联逆变器，使得链路中的直流能级成比例地增加。 优选地选择预选的最大DC能级，使得过大的AC输入电压变化不会引起DC能量水平的进一步增加。 在目前的优选实施例中，当AC输入电压落在有源电力线调节器的正弦调节范围内时，该最大DC能级是标称维持的电平的两倍。

公开(公告)号：US4644248A

公开(公告)日：1987-02-17

申请号：US790681

申请日：1985-10-23

申请人： Michael B. Brennen ,  Alberto Abbondanti

发明人： Michael B. Brennen ,  Alberto Abbondanti

IPC分类号： H02J3/18 ,  H03K5/05

CPC分类号： H02J3/1835 ,  Y02E40/12

摘要： A timing reference generator for producing a multi-phase timing reference signal in synchronism with a multi-phase source voltage signal is disclosed. The timing reference generator uses an N stage array of series connected phase-locked loop (PLL) circuits to preserve the prefault condition of an input source signal by open circuiting at least the Nth stage prior to the propagation of the fault condition signal through the array. The open circuited stage acts like a flywheel to preserve the prefault condition of the source signal. This output can be used to replace the lost source signal until the fault condition has cleared. The output of the first PLL is used to provide the timing reference signals. This arrangement allows for sensing delays in establishing the occurrence of a fault and the consequent delay in activation of the flywheel. The first PLL comprises a positive sequence type phase detector and series connected band reject harmonic filters in order to eliminate phase errors caused by input voltage unbalance and input harmonic content. Subsequent PLL circuits are of the zero phase error type. Multiple faults are tolerated if two stages of the array are connected in parallel and alternately operated as flywheels. The flywheels are sequenced so that one is kept operating as a flywheel while the other one settles.

摘要翻译： 公开了一种用于与多相源电压信号同步产生多相定时参考信号的定时参考发生器。 定时参考发生器使用串联连接的锁相环（PLL）电路的N级阵列，以在通过阵列传播故障状态信号之前至少第N级开路来保持输入源信号的预失真状态 。 开路阶段像飞轮一样保持源信号的预失电状态。 该输出可用于替换丢失的源信号，直到故障状态清除为止。 第一个PLL的输出用于提供定时参考信号。 这种布置允许在建立故障的发生以及随之而来的飞轮的启动延迟中感测到延迟。 第一个PLL包括一个正序型相位检测器和串联连接的带阻滤波器，以消除由输入电压不平衡和输入谐波含量引起的相位误差。 后续的PLL电路是零相位误差类型。 如果阵列的两个级并联连接并以飞轮方式交替运行，则容许多个故障。 飞轮被排序，使得飞轮保持作为飞轮运行，而另一个飞行器停止运行。

公开(公告)号：US4599553A

公开(公告)日：1986-07-08

申请号：US707000

申请日：1985-02-28

申请人： Michael B. Brennen ,  Miklos Sarkozi

发明人： Michael B. Brennen ,  Miklos Sarkozi

IPC分类号： H02J3/18 ,  G05F1/70

CPC分类号： H02J3/1842 ,  Y02E40/12 ,  Y02E40/22

摘要： A static VAR generator for providing reactive compensation incorporating a malfunction detector. The static VAR generator comprises a reactance which is linearly responsive to a first linearized control signal and produces an output signal proportional to the reactive compensation which provides a feedback signal. A director control uses the feedback signal and an adjustable reference signal to provide the first linearized control signal based on the difference between the reference and feedback signals. A tracker controller provides a second linearized control signal based on the reference and feedback signals. The second control signal is compensated by an equalizer that determines the difference between the first and second control signals. The compensation counters the difference between the first and second control signals caused by the offset and component tolerances in the two controllers and makes the second control signal substantially equal to and track the first control signal. A first comparator conpares the compensated second control signal with the first control signal. Whenever these two control signals are not substantially equal, a fault has occurred in one of the two controllers. A second comparator compares the first control signal with the output signal. Whenever these two signals are not substantially equal, a fault has occurred in the generator.In an alternate embodiment an additional tracker control, comparators and default decoder provide a 2 out of 3 polling system for indicating when one of the three controllers is malfunctioning.

摘要翻译： 静态VAR发生器，用于提供包含故障检测器的无功补偿。 静态VAR发生器包括对第一线性化控制信号线性响应并产生与无功补偿成比例的输出信号的电抗，其提供反馈信号。 导向器控制使用反馈信号和可调参考信号，以基于参考和反馈信号之间的差来提供第一线性化控制信号。 跟踪器控制器基于参考和反馈信号提供第二线性化控制信号。 第二控制信号由确定第一和第二控制信号之间的差的均衡器补偿。 补偿针对由两个控制器中的偏移和分量公差引起的第一和第二控制信号之间的差异，并使第二控制信号基本上等于并跟踪第一控制信号。 第一比较器将补偿的第二控制信号与第一控制信号进行比较。 无论何时这两个控制信号基本上不相等，两个控制器之一发生故障。 第二比较器将第一控制信号与输出信号进行比较。 无论何时这两个信号基本上不相等，发生器发生故障。 在替代实施例中，附加跟踪器控制，比较器和默认解码器提供3个轮询系统中的2个，用于指示三个控制器之一何时发生故障。