公开(公告)号：US09391531B2

公开(公告)日：2016-07-12

申请号：US14375394

申请日：2012-01-30

申请人： Magnus Karlsson ,  Oscar Persson

发明人： Magnus Karlsson ,  Oscar Persson

IPC分类号： G05F1/00 ,  H02M3/335 ,  H02M3/156 ,  H02M1/00

CPC分类号： H02M3/33592 ,  H02M3/156 ,  H02M3/33507 ,  H02M2001/0003 ,  H02M2001/0022 ,  H02M2001/0025

摘要： A control circuit, that controls the duty cycle of a switched mode power supply, comprises a reference voltage generator that, responsive to the input voltage exceeding a threshold value, generates a predetermined reference signal. Responsive to the input voltage not exceeding the threshold value, the reference voltage generator receives a signal indicative of an input voltage of the switched mode power supply and generates a variable reference signal dependent upon the input voltage. The control circuit further comprises an error signal generator that receives a signal indicative of an output voltage of the power supply and generates an error signal based on the reference signal generated by the reference voltage generator and based on the output voltage. The control circuit also includes a duty cycle control signal generator that generates the control signal to control the duty cycle of the power supply in dependence upon the error signal.

摘要翻译： 控制开关模式电源的占空比的控制电路包括参考电压发生器，其响应于超过阈值的输入电压产生预定的参考信号。 响应于不超过阈值的输入电压，参考电压发生器接收指示开关模式电源的输入电压的信号，并根据输入电压产生可变参考信号。 控制电路还包括误差信号发生器，其接收指示电源的输出电压的信号，并且基于由参考电压发生器产生的参考信号并基于输出电压产生误差信号。 控制电路还包括占空比控制信号发生器，该发生器根据误差信号产生控制信号以控制电源的占空比。

公开(公告)号：US09214858B2

公开(公告)日：2015-12-15

申请号：US13810484

申请日：2010-07-16

申请人： Torbjörn Holmberg ,  Magnus Karlsson

发明人： Torbjörn Holmberg ,  Magnus Karlsson

IPC分类号： G05F1/577 ,  H02M3/04 ,  H02J1/00 ,  H02M3/158 ,  H02M1/00

CPC分类号： H02M3/04 ,  H02J1/00 ,  H02M3/158 ,  H02M2001/007 ,  H02M2001/008

摘要： In an intermediate bus architecture power system, a voltage controller that generates control signals for controlling an intermediate bus voltage (VIB) output from a first stage DC-to-DC power converter to at least one second stage DC-to-DC power converter via the intermediate voltage bus. A receiver receives values of the current input to the first stage converter, or the current and voltage output by the first stage converter. The controller determines a first value of an efficiency measure using the received values corresponding to a first VIB, and determines a second value of the efficiency measure for a second VIB higher than the first VIB. Control signals cause the first stage converter to set the VIB to a voltage higher than the second VIB if the second efficiency measure value represents a higher system efficiency than the first efficiency measure value, and to a voltage lower than the first VIB if the second efficiency measure value represents a lower system efficiency than the first efficiency measure value.

摘要翻译： 在中间总线架构电力系统中，电压控制器产生用于控制从第一级DC-DC功率转换器输出到至少一个第二级DC-DC电力转换器的中间总线电压（VIB）的控制信号， 中压电压总线。 接收器接收到第一级转换器的电流输入值，或者由第一级转换器输出的电流和电压值。 控制器使用对应于第一VIB的接收值来确定效率测量的第一值，并且确定高于第一VIB的第二VIB的效率测量的第二值。 如果第二效率测量值表示比第一效率测量值更高的系统效率，则控制信号使得第一级转换器将VIB设置为高于第二VIB的电压，并且如果第二效率测量值表示比第一效率测量值更高的系统效率， 测量值表示比第一效率测量值更低的系统效率。

公开(公告)号：US20150180343A1

公开(公告)日：2015-06-25

申请号：US14414861

申请日：2012-07-27

申请人： Oscar Persson ,  Xuefeng Yang ,  Magnus Karlsson

发明人： Oscar Persson ,  Xuefeng Yang ,  Magnus Karlsson

IPC分类号： H02M3/158

CPC分类号： H02M3/1588 ,  H02M1/36 ,  H02M3/1584 ,  H02M3/285 ,  H02M3/33592 ,  Y02B70/1466 ,  Y02B70/1475

摘要： A method and a control unit for changing a working mode of a synchronous rectifier. The synchronous rectifier comprises at least one controllable switch having a diode in parallell thereof. The synchronous rectifier is operatively connected to a reactive circuit, and is arranged to receive at least one control signal at a control terminal, for controlling at least one controllable switch. The at least one control signal is pulse-width modulated with a defined duty-cycle. The method comprises adjusting the pulse-width of the at least one control signal between zero percent duty-cycle and the defined duty-cycle at a frequency above a cut-off frequency of the reactive circuit. Thereby, reducing the effect of a forward voltage drop over said diode in the synchronous rectifier.

摘要翻译： 一种用于改变同步整流器的工作模式的方法和控制单元。 同步整流器包括至少一个具有并联二极管的可控开关。 同步整流器可操作地连接到无功电路，并被布置成在控制端接收至少一个控制信号，用于控制至少一个可控开关。 所述至少一个控制信号以限定的占空比进行脉冲宽度调制。 该方法包括以高于无功电路的截止频率的频率调整零百分比占空比与限定占空比之间的至少一个控制信号的脉冲宽度。 从而减少同步整流器中所有二极管的正向压降的影响。

公开(公告)号：US20150003116A1

公开(公告)日：2015-01-01

申请号：US14377756

申请日：2012-02-09

申请人： Magnus Karlsson ,  Mikael Appelberg ,  Oscar Persson

发明人： Magnus Karlsson ,  Mikael Appelberg ,  Oscar Persson

IPC分类号： H02M1/40 ,  H02M3/335

CPC分类号： H02M1/40 ,  H02M3/33538 ,  H02M3/33592 ,  H02M3/3378 ,  Y02B70/1475

摘要： A control circuit generates a control signal to control a duty cycle of a switched mode power supply such that the magnetic flux density in the transformer is balanced, thereby preventing saturation of the transformer core. This permits the use of unsymmetrical duty cycles within the switch cycle. The control circuit comprises a flux density calculator and a regulator. The flux density regulator receives a signal indicative of the input voltage of the switched mode power supply and a feedback signal comprising the generated control signal, and it generates therefrom an average flux density signal. The regulator receives the generated average flux density signal and a signal indicative of the output voltage of the switched mode power supply, and generates the control signal in dependence upon the average flux density signal, the reference flux density signal, the signal indicative of the output voltage and a reference voltage signal.

摘要翻译： 控制电路产生控制信号以控制开关模式电源的占空比，使得变压器中的磁通密度平衡，从而防止变压器铁芯的饱和。 这允许在开关周期内使用不对称的占空比。 控制电路包括磁通密度计算器和调节器。 通量密度调节器接收指示开关模式电源的输入电压的信号和包括所生成的控制信号的反馈信号，并且由此产生平均磁通密度信号。 调节器接收所生成的平均通量密度信号和指示开关模式电源的输出电压的信号，并根据平均通量密度信号，参考通量密度信号，表示输出的信号产生控制信号 电压和参考电压信号。

公开(公告)号：US08849919B2

公开(公告)日：2014-09-30

申请号：US11325022

申请日：2006-01-03

申请人： Peter Gerstl ,  Magnus Karlsson ,  Dirk Seider ,  Oliver Suhre

发明人： Peter Gerstl ,  Magnus Karlsson ,  Dirk Seider ,  Oliver Suhre

IPC分类号： G06F17/30 ,  G06Q10/10 ,  H04L12/58

CPC分类号： H04L51/066 ,  G06Q10/107 ,  H04L51/063 ,  H04L51/16 ,  H04L51/22

摘要： The present invention relates to electronic mail. In particular, it relates to a method and system for processing electronic mail, wherein mails are stored in a space efficient way by removing redundancy from the content. Prior art is known for doing a limited version of this on a mail client.In order to provide a method and system which is adequate for server operation it is proposed to perform the steps of: splitting the content of an incoming e-mail into elementary mail segments by parsing and optionally normalizing the e-mail body based on a regular grammar with transduction rules; computing a unique ID for each elementary mail segment; storing the normalized or original form of an elementary mail segment together with a link to its respective parent elementary mail segment in a table in a way retrievable by said unique ID; and reconstructing an original e-mail from a concatenation of a respective sequence of said elementary mail segments wherein the unique ID for each elementary mail segment is used as a key for accessing said table and retrieving the respective elementary mail segment.

摘要翻译： 本发明涉及电子邮件。 特别地，本发明涉及一种用于处理电子邮件的方法和系统，其中通过从内容中去除冗余来以空间有效的方式存储邮件。 已知现有技术在邮件客户端上进行有限的版本。 为了提供足够用于服务器操作的方法和系统，建议执行以下步骤：通过解析和可选地规范化电子邮件正文，将传入的电子邮件的内容分成基本邮件段 具有转导规则的语法; 计算每个基本邮件段的唯一ID; 将基本邮件段的标准化或原始形式连同到其相应的父母基本邮件段的链接以可通过所述唯一ID可检索的方式存储在表中; 以及从所述基本邮件段的相应序列的级联重建原始电子邮件，其中每个基本邮件段的唯一ID被用作访问所述表并且检索相应的基本邮件段的密钥。

公开(公告)号：US20130155727A1

公开(公告)日：2013-06-20

申请号：US13820329

申请日：2010-09-02

申请人： Magnus Karlsson ,  Jonas Malmberg ,  Oscar Persson

发明人： Magnus Karlsson ,  Jonas Malmberg ,  Oscar Persson

IPC分类号： H02M3/335

CPC分类号： H02M3/33546 ,  H02M3/156 ,  H02M3/335 ,  H02M3/33592 ,  H02M2001/0048 ,  Y02B70/1475 ,  Y02B70/1491

摘要： An isolated switched mode power supply comprises a transformer, with primary and secondary windings, and a rectification network connected to the secondary winding. The rectification network and the transformer are arranged such that, during a free-wheeling period of operation of the switched mode power supply, a magnetic flux from a first portion of a secondary winding of the transformer substantially cancels a magnetic flux from a second portion of the secondary winding between the first and second portions of the secondary winding. Additionally, a secondary side circuit connected to the secondary winding comprises a switching device, which is connected to a centre-tap, provided between the first and second portions of the secondary winding, and an output of the rectification network so as to conduct at least a part of a free-wheeling current flowing in the secondary side circuit during the free-wheeling period.

摘要翻译： 隔离开关电源包括具有初级和次级绕组的变压器以及连接到次级绕组的整流网络。 整流网络和变压器布置成使得在开关模式电源的续流周期期间，来自变压器的次级绕组的第一部分的磁通量基本上从第二部分的第二部分抵消了磁通量 次级绕组的第一和第二部分之间的次级绕组。 另外，连接到次级绕组的次级侧电路包括开关装置，其连接到设置在次级绕组的第一和第二部分之间的中心抽头和整流网络的输出端，以便至少导通 在续流期间在次级侧回路中流动的续流电流的一部分。

公开(公告)号：US08451038B2

公开(公告)日：2013-05-28

申请号：US13388578

申请日：2011-02-02

申请人： Magnus Karlsson ,  Henrik Borgengren ,  Anders Kullman ,  Jonas Malmberg ,  Fredrik Wahledow

发明人： Magnus Karlsson ,  Henrik Borgengren ,  Anders Kullman ,  Jonas Malmberg ,  Fredrik Wahledow

IPC分类号： G05F1/00

CPC分类号： H02M3/156 ,  H02M2001/0022

摘要： A switched mode power supply (SMPS) comprising a feedback unit, voltage feed forward (VFF) compensation signal generator and a transient detector. A VFF compensation signal is only applied to the output of the feedback unit when a transient is detected by the transient detector on the input voltage of the SMPS, thereby saving power and computation time. The transient detector comprises a first comparator to detect that a positive transient has occurred if a difference signal is greater than a positive threshold level; a second comparator to determine if the difference signal is within a predetermined range of positive values and output a result that indicates if the difference signal is within the predetermined range of positive values; and a first calculator to detect that a positive transient has occurred if, out of a first predetermined number of consecutive results of the output of the second comparator, there is at least a second predetermined number of results indicating that the difference signal is within the predetermined range of positive values. The transient detector comprises further features for similarly detecting a negative transient.

摘要翻译： 包括反馈单元，电压前馈（VFF）补偿信号发生器和瞬态检测器的开关模式电源（SMPS）。 当瞬态检测器对SMPS的输入电压进行瞬态检测时，VFF补偿信号仅适用于反馈单元的输出，从而节省功率和计算时间。 瞬态检测器包括第一比较器，用于检测如果差信号大于正阈值电平则发生正瞬变; 第二比较器，用于确定差分信号是否在正值的预定范围内，并输出指示差信号是否在正值的预定范围内的结果; 以及第一计算器，用于检测是否产生正瞬态，如果在第二比较器的输出的第一预定数量的连续结果中存在至少第二预定数量的结果，指示差信号在预定的 正值范围。 瞬态检测器包括用于类似地检测负瞬变的另外的特征。

公开(公告)号：US20120098553A1

公开(公告)日：2012-04-26

申请号：US13380245

申请日：2009-12-21

申请人： Magnus Karlsson ,  Torbjörn Holmberg ,  Matz Lenells

发明人： Magnus Karlsson ,  Torbjörn Holmberg ,  Matz Lenells

IPC分类号： G01R27/26

CPC分类号： H02M3/157 ,  G01R27/2605

摘要： A method of determining a measure of a total capacitance of one or more capacitive elements connected to an output of a switched mode power supply is described. The method includes generating a voltage control signal to cause an output voltage control signal age controller to sweep a voltage at the output of the switched mode power supply from an initial voltage value to a final voltage value. Sample values of a current at the output measured by a current sampler during the sweep of the output voltage are received, and an integrated current value representing a measure of the total capacitance using the received sample values is calculated.

摘要翻译： 描述了确定连接到开关模式电源的输出的一个或多个电容元件的总电容的测量的方法。 该方法包括产生电压控制信号以使输出电压控制信号老化控制器将开关模式电源的输出端处的电压从初始电压值扫描到最终电压值。 接收在输出电压扫描期间由电流采样器测量的输出处的电流的采样值，并且计算表示使用所接收的采样值的总电容的测量值的积分电流值。

公开(公告)号：US20120078556A1

公开(公告)日：2012-03-29

申请号：US13321915

申请日：2009-06-03

申请人： Torbjorn Holmberg ,  Magnus Karlsson

发明人： Torbjorn Holmberg ,  Magnus Karlsson

IPC分类号： G01R19/00 ,  G06F19/00

CPC分类号： H02M3/156 ,  G01R19/25 ,  H02M2001/0009

摘要： A method of determining a current in a switched mode power supply. The method comprises: storing values representing at least one pre-calculated matrix A; receiving measured current values; and using the stored values representing the matrix A and the received current values to calculate a respective initial value for each of the coefficients of the line and for each measured current value: calculating an estimated current using the equation of the line and the calculated initial values of the coefficients; determining a difference between the measured current value and the estimated current value to generate a difference value, and comparing the difference value against a threshold and, if the difference value is greater than the threshold, calculating updated values of the coefficients using stored values representing matrix A and difference value. A value for the current in the switched mode power supply is determined using the updated values of the coefficients

摘要翻译： 一种确定开关模式电源中的电流的方法。 该方法包括：存储表示至少一个预先计算的矩阵A的值; 接收测量电流值; 并且使用存储的表示矩阵A的值和接收到的电流值来计算线路的每个系数和每个测量的电流值的相应初始值：使用线的方程和所计算的初始值来计算估计电流 的系数; 确定所测量的电流值与所述估计电流值之间的差以产生差值，并且将所述差值与阈值进行比较，并且如果所述差值大于所述阈值，则使用表示矩阵的存储值来计算所述系数的更新值 A和差值。 使用系数的更新值确定开关模式电源中的电流的值。

公开(公告)号：US08095830B1

公开(公告)日：2012-01-10

申请号：US11732454

申请日：2007-04-03

申请人： Ira Cohen ,  Chengdu Huang ,  Magnus Karlsson

发明人： Ira Cohen ,  Chengdu Huang ,  Magnus Karlsson

IPC分类号： G06F11/00

CPC分类号： G06F11/3055 ,  G06F11/0784 ,  G06F11/3082

摘要： A method for diagnosing system health with system event logs is provided. The method includes receiving a plurality of event logs and health indicator states from a system; transducing the plurality of event logs into numeric-based metrics of the system; and deriving, based on the transduced numeric-based metrics, at least one model of the system that correlates the plurality of event logs to the corresponding health indicator states.

摘要翻译： 提供了一种使用系统事件日志诊断系统运行状况的方法。 该方法包括从系统接收多个事件日志和健康状况指示符状态; 将所述多个事件日志转换为所述系统的基于数字的度量; 以及基于所述经转换的基于数字的度量，导出将所述多个事件日志与相应的健康状况指示符状态相关联的所述系统的至少一个模型。