公开(公告)号：US5450029A

公开(公告)日：1995-09-12

申请号：US83747

申请日：1993-06-25

申请人： Mark E. Jacobs ,  Richard W. Farrington ,  William P. Wilkinson

发明人： Mark E. Jacobs ,  Richard W. Farrington ,  William P. Wilkinson

IPC分类号： G01R19/02 ,  G01R19/04 ,  H02M1/00 ,  H02M1/42 ,  G06F7/556

CPC分类号： H02M1/4225 ,  G01R19/02 ,  G01R19/04 ,  Y02B70/126 ,  Y02P80/112

摘要： An estimating circuit for application in estimating or deriving the value V.sub.rms.sup.2 or V.sub.peak.sup.2, of a line voltage V.sub.AC provides fast response time and a substantially ripple free value for these signals by the utilization of a controlled harmonic oscillator whose output precisely tracks the input voltage waveform. Two out of phase (by .pi./2) sine wave signals are derived from the input sine wave and these two out of phase signals are squared and summed to derive or estimate the desired square of the sine waveform signal at a fast response time while substantially excluding ripple of the estimated out of phase sine waves. An estimating circuit, described herein, comprises two integrator circuits series connected into a substantially closed loop. The output of the second integrator circuit is fed back to the input of the first integrator circuit. The output of each individual integrator circuit is a voltage sine wave separated in phase from the output of the other integrator by .pi./2 and in synchronism with the input substantially sine wave voltage V.sub.AC. The output of each of the integrator circuits is squared in an associated squaring circuit. Each output of one of the two squaring circuits is summed with the output of the other squaring circuit to produce the desired value of V.sub.peak.sup.2 or V.sub.rms.sup.2.

摘要翻译： 用于估计或导出线路电压VAC的值Vrms2或Vpeak2的估计电路通过利用其输出精确跟踪输入电压波形的受控谐波振荡器来为这些信号提供快速响应时间和基本上无纹波的值。 从输入正弦波导出两个异相（由pi / 2）正弦波信号，并且这两个异相信号被平方并相加以在快速响应时间导出或估计正弦波形信号的期望平方，同时基本上 除了估计的异相正弦波的纹波。 本文所述的估计电路包括连接到基本上闭合的环路中的两个积分器电路。 第二积分器电路的输出反馈到第一积分器电路的输入端。 每个单独积分器电路的输出是与另一个积分器的输出相位分离成π/ 2并与输入的基本正弦波电压VAC同步的电压正弦波。 每个积分器电路的输出在相关联的平方电路中平方。 两个平方电路中的一个的每个输出与另一个平方电路的输出相加，以产生所需的Vpeak2或Vrms2值。

公开(公告)号：US5391976A

公开(公告)日：1995-02-21

申请号：US98183

申请日：1993-07-28

申请人： Richard W. Farrington ,  Mark E. Jacobs ,  William P. Wilkinson

发明人： Richard W. Farrington ,  Mark E. Jacobs ,  William P. Wilkinson

IPC分类号： H02M7/06 ,  H02M1/00 ,  H02M1/42 ,  H02M7/217 ,  G05F1/70 ,  H02M1/14

CPC分类号： H02M1/4208 ,  H02M2001/0012 ,  Y02B70/126

摘要： A power factor control system for a rectifier is operative through the generation of estimators of control input parameters (a peak squared input AC voltage E.sub.m.sup.2 and load power) and by the use of these substantially ripple free signals controls a boost, buck, buck-boost, SEPIC or other related type converter at the input to the rectifier. The generation of these parameters allows the derivation of a programmed current i.sub.p used to control the wave form of the actual input current. The control procedure is based on a quarter cycle averaged power basis. The input power is derived from the rms values of the input voltage and current. Given the output power and its deviations in power due to load changes, the programmed current i.sub.p is determined by deriving an input conductance of the rectifier and combining it with the input voltage.

摘要翻译： 用于整流器的功率因数控制系统通过产生控制输入参数（峰值平方输入AC电压Em2和负载功率）的估计器而工作，并且通过使用这些基本上无纹波的信号来控制升压，降压，降压 - 升压 ，SEPIC或其他相关类型转换器在整流器的输入端。 这些参数的产生允许导出用于控制实际输入电流的波形的编程电流ip。 控制程序是基于四分之一周期平均功率的基础。 输入功率是从输入电压和电流的有效值得出的。 给定输出功率及其由于负载变化引起的功率偏差，编程的电流ip通过导出整流器的输入电导并将其与输入电压组合来确定。