公开(公告)号：EP3146801A1

公开(公告)日：2017-03-29

申请号：EP15795533.7

申请日：2015-05-20

申请人： Gerard Lighting Holdings Pty Ltd

发明人： VANDERZON, James

IPC分类号： H05B37/00 ,  H05B41/00 ,  H02M7/00 ,  G05F5/00 ,  F21V23/00 ,  F21V99/00

CPC分类号： H02M5/2573 ,  G01R19/175 ,  H02M1/081 ,  H02M1/083 ,  H02M2001/0058 ,  H02M2007/4803 ,  H03K5/1536 ,  H05B33/0809 ,  H05B33/0845 ,  H05B39/044 ,  H05B39/08 ,  H05B41/3924

摘要： A symmetry control circuit for a trailing edge phase control dimmer circuit for controlling alternating current (AC) power to a load, the symmetry control circuit including: a bias signal generator circuit configured to monitor non-conduction periods of each half cycle of said AC power for an elapsed duration of the non-conduction periods, and generate a bias signal voltage based on the elapsed duration, whereby an amplitude of the bias signal voltage is proportional to the elapsed duration of the non-conduction periods; and a bias signal converter circuit configured to convert the bias signal voltage to a bias signal current, wherein the bias signal current is added to a reference current of a conduction period timing circuit configured to determine said conduction periods, and wherein the conduction period timing circuit is configured to alter one of the conduction periods immediately following one of the non-conduction periods based on the bias signal current when added to the reference current to compensate for a phase shift of a zero-crossing of said one of the non-conduction periods corresponding to an elapsed duration of said one of the non-conduction periods so as to restore symmetry of the non-conduction periods of each half cycle of AC power.

摘要翻译： 一种用于向负载控制交流（AC）功率的后沿相位控制调光电路的对称控制电路，所述对称控制电路包括：偏置信号发生器电路，被配置为监视所述交流电源的每个半周期的非导通周期 对于非导通时段的经过的持续时间，并且基于经过的持续时间产生偏置信号电压，由此偏置信号电压的幅度与非导通周期的经过持续时间成比例; 以及偏置信号转换器电路，被配置为将所述偏置信号电压转换为偏置信号电流，其中所述偏置信号电流被添加到被配置为确定所述导通周期的导通周期定时电路的参考电流，并且其中所述导通周期定时电路 配置为当加到参考电流之后，基于偏置信号电流，在非导通时段中的一个之后立即改变导通周期之一，以补偿所述一个非导通周期的过零点的相移 对应于所述一个非导通时段的经过的持续时间，以便恢复交流电源的每个半周期的非导通周期的对称性。

公开(公告)号：EP3142241A1

公开(公告)日：2017-03-15

申请号：EP15184669.8

申请日：2015-09-10

申请人： ABB Technology AG

发明人： Buchmann, Beat ,  Herold, Simon

IPC分类号： H02M7/48 ,  H02M7/49

CPC分类号： H02M7/48 ,  H02M7/49 ,  H02M2007/4803

摘要： The present invention is concerned with a reduction of a DC offset in a power electronic converter output current to prevent saturation of a transformer connected to the converter. A current measurement DC offset of a low-cost current transducer is compensated online by using a DC voltage transducer signal indicative of a DC component in the converter current. This DC component is compared to the DC current measured with the low-cost current transducer and any difference is used for the compensating, or calibrating, the DC offset of the low-cost current transducer to prevent saturation of the coupling transformer. The combination of two low-cost transducers in order to replace one high-cost component avoids control stability problems and saves both on material and on commissioning cost.

摘要翻译： 本发明涉及电力电子转换器输出电流中的DC偏移的减小，以防止连接到转换器的变压器饱和。 通过使用表示转换器电流中的DC分量的DC电压传感器信号在线补偿低成本电流传感器的电流测量DC偏移。 该直流分量与使用低成本电流传感器测量的直流电流进行比较，并且任何差异用于补偿或校准低成本电流传感器的直流偏移，以防止耦合变压器的饱和。 两个低成本传感器的组合以替代一个高成本组件避免了控制稳定性问题，并节省了材料和调试成本。

公开(公告)号：EP1870993A1

公开(公告)日：2007-12-26

申请号：EP06115873.9

申请日：2006-06-22

申请人： Alstom Technology Ltd

发明人： Benaboud, Aziza ,  Rufer, Alfred-Christophe

IPC分类号： H02M5/40

CPC分类号： H02M5/4585 ,  H02J3/38 ,  H02M7/53875 ,  H02M2007/4803

摘要： Proposed is a method for controlling an inverter (5) converting direct input voltage ( U dc ) into alternating inverter voltage ( V inv ) with a basic frequency (ω) for providing it to a load (9) for a transition in which a change in active power (P) and/or reactive power ( Q ) within a transition time ( T tr ) is carried out. The method is characterised in that, for avoiding DC offsets the transition time T tr is chosen such that in an equation which is a function of the fundamental period of the basic frequency and the target phase angle after the transition between the inverter voltage V inv and the load voltage V n , a variable k is a small integer number between 1-8.

摘要翻译： 提出了一种用于控制逆变器（5）的方法，逆变器（5）将直接输入电压（U dc）转换成具有基本频率（É）的交流逆变器电压（V inv），以将其提供给用于转换的负载（9） 在过渡时间（T tr）内的有功功率（P）和/或无功功率（Q）被执行。 该方法的特征在于，为了避免DC偏移，选择转换时间T tr，使得在等式中，基本频率的基本周期和逆变器电压V inv与转换后的目标相位角的函数 负载电压V n，变量k是1-8之间的小整数。

公开(公告)号：EP1369982A3

公开(公告)日：2005-02-02

申请号：EP03011928.3

申请日：2003-05-27

申请人： Omron Corporation

发明人： Tanabe, Katsutaka, c/o Omron Corporation ,  Toyoura, Nobuyuki, c/o Omron Corporation ,  Oka, Seiji, c/o Omron Corporation ,  Mabuchi, Masao, c/o Omron Corporation ,  Nakamura, Kotaro, c/o Omron Corporation ,  Tsurukawa, Yuji, c/o Omron Corporation ,  Inoue, Kenichi, c/o Omron Corporation

IPC分类号： H02M3/337

CPC分类号： H02M3/3372 ,  H02M2007/4803

摘要： An electric power conversion device comprises switching elements 2a, 2b making up a push-pull converter, a pulse transformer T, a rectification diode D1, a rectification diode D2, a choke coil L, a smoothing capacitor C, a DC magnetic deviation prevention means 3, and an inverter 4. The DC magnetic deviation prevention means 3 detects the coil currents I1, I2 flowing in the primary windings M1, M2 of the pulse transformer T. By controlling (shortening) the on time of the switching element having a greater amount of current, the coil currents I1, I2 are balanced (I1 = I2), thereby preventing the magnetic deviation phenomena of the pulse transformer T.

公开(公告)号：EP0580192B1

公开(公告)日：1997-03-26

申请号：EP93201437.6

申请日：1993-05-19

申请人： FINMECCANICA S.p.A. AZIENDA ANSALDO

发明人： Carpita, Mauro

IPC分类号： H02M7/48

CPC分类号： H02M1/40 ,  H02M7/48 ,  H02M2001/0016 ,  H02M2001/0025 ,  H02M2007/4803

公开(公告)号：EP0427527A2

公开(公告)日：1991-05-15

申请号：EP90312169.7

申请日：1990-11-07

申请人： OTIS ELEVATOR COMPANY

发明人： Iwasa, Masao ,  Sugiura, Hirofumi Mansyon Ryubi 407 Go,

IPC分类号： H02M7/5395

CPC分类号： H02M7/5395 ,  H02M2007/4803

摘要： The DC offset in a current control system for a PWM inverter drive is corrected by integrating (11) a DC component of a current control signal (9₉) provided by a current control amplifier (9) and feedback controlling (12,9₇) the current control amplifier to reduce the DC component to zero.

摘要翻译： 通过对由电流控制放大器（9）提供的电流控制信号（99）的DC分量进行积分（11）和反馈控制（12,97）来校正PWM逆变器驱动的电流控制系统中的DC偏移 控制放大器将直流分量降至零。

公开(公告)号：EP0361389A2

公开(公告)日：1990-04-04

申请号：EP89117744.6

申请日：1989-09-26

申请人： KABUSHIKI KAISHA TOSHIBA

发明人： Yasuda, Nobuyuki

IPC分类号： H02M7/48

CPC分类号： H02M7/48 ,  H02M1/12 ,  H02M2007/4803

摘要： In a DC/AC power converting apparatus (100), a DC component is removed from an AC output. The DC/AC power converting apparatus (100) includes: a DC source (1) for supplying DC power; a DC/AC inverter circuit (2) for inverting the DC power into AC power; a transformer (3) for transforming the AC power so as to obtain desirable AC power; a detector (5) for detecting an output signal derived from the DC/AC inverter circuit (2) to produce an output detection signal (i D ); a calculation circuit (6) for performing a control calculation so as to follow the output detection signal (i D ) to a reference signal (i R ), whereby a first output instruction signal (V I ) is derived; and, a DC component remover (50) for removing a DC component from the first output instruction signal (V I ) to derive a second output instruction signal (V I-DC ), whereby the inverting operation of the DC/AC inverter circuit (2) is controlled based upon the second output instruction signal (V I-DC ) so as to prevent DC magnetization of the transformer (3).

摘要翻译： 在DC / AC电力转换装置（100）中，从AC输出去除DC分量。 DC / AC电力转换装置（100）包括：DC电源（1），用于提供DC电力; DC / AC逆变器电路（2），用于将DC电力转换成AC电力; 变压器（3），用于变换交流电力以获得所需的交流电力; 检测器（5），用于检测从所述DC / AC逆变器电路（2）导出的输出信号以产生输出检测信号（iD）; 计算电路（6），用于执行控制计算以便将输出检测信号（iD）跟随到参考信号（iR），由此导出第一输出指令信号（VI）; 以及用于从第一输出指令信号（VI）去除DC分量以导出第二输出指令信号（VI-DC）的DC分量去除器（50），由此DC / AC逆变器电路（2）的反相操作， 基于第二输出指令信号（VI-DC）进行控制，以防止变压器（3）的直流磁化。

公开(公告)号：EP0293915A3

公开(公告)日：1989-09-27

申请号：EP88108915.5

申请日：1988-06-03

申请人： HITACHI, LTD.

发明人： Tanamachi, Tokunosuke ,  Nakamura, Kiyoshi ,  Nakata, Kiyoshi ,  Tsutsui, Yoshio ,  Miyake, Wataru ,  Suzuki, Katsuaki

IPC分类号： H02M7/5387

CPC分类号： H02M7/53873 ,  H02M2001/0022 ,  H02M2007/4803

摘要： In an inverter control apparatus including a pulse width modulation inverter (4) supplied with power from a d.c. power source (2) to generate an a.c. output, a frequency control unit (9) controlling the output frequency of the inverter, and a voltage control unit (13) controlling the output voltage of the inverter, a frequency adjusting unit (14) is provided to adjust the operating frequency of the inverter so that the product of voltage and time in each positive half cycle of the output voltage of the inverter becomes equal to that in the next adjacent negative half cycle of the output voltage of the inverter. When the inverter (4) is used in an apparatus for controlling an induction motor (5), the frequency adjusting unit (14) adjusts the output frequency of the inverter according to the result of detection of a ripple factor of an input voltage of the inverter, and a frequency adjusting-factor correcting unit (16) corrects the frequency adjusting factor of the frequency adjusting unit (14) according to at least one of the output of an induction-motor rotation frequency detector (8) and the output of the voltage control unit (13).

公开(公告)号：EP0220638A2

公开(公告)日：1987-05-06

申请号：EP86114483.0

申请日：1986-10-18

申请人： MITSUBISHI DENKI KABUSHIKI KAISHA

发明人： Nishihiro, Akinori c/o MITSUBISHI DENKI K.K. ,  Hanaka, Ikutaro c/o MITSUBISHI DENKI K.K. ,  Kajita, Takeyoshi c/o MITSUBISHI DENKI K.K.

IPC分类号： H02M5/458 ,  H02M7/5387

CPC分类号： H02M7/48 ,  H02M7/53871 ,  H02M2007/4803

摘要： The present invention is directed to supply an AC (alternating current) output having a constant voltage and a constant frequency to a load such as computers. A constant voltage/frequency power supply apparatus is provided which comprises at least a constant voltage/­frequency output circuit including a converter, connected between an AC power source and the load, for DC-converting the AC output of this power source, and an inverter for AC-inverting the DC-converted output, a control circuit for controlling the inverter of the output circuit, and further a correction means for deleting as a DC magnetic polarization amount a DC component contained in the AC output of the output circuit, and for deleting a DC magnetic polarization amount from the AC output supplied to the load, based upon the detected DC magnetic polarization amount, whereby a sine wave AC output having a constant voltage/frequency which is not adversely influenced by the DC magnetic polarization is supplied to the load.

公开(公告)号：EP0146876A3

公开(公告)日：1985-11-21

申请号：EP84115237

申请日：1984-12-12

申请人： GENERAL ELECTRIC COMPANY

发明人： Santurtun, Carlos Manueco ,  Carmena, Angel Diaz

IPC分类号： H02M03/337

CPC分类号： H02M1/40 ,  H02M3/3376 ,  H02M2007/4803 ,  H05G1/34

摘要： An inverter provides alternating current to the high-voltage transformer by way of alternating the current flow through its diagonals. Means are provided to sense the current flow in the transformer primary to obtain an indication of an impending saturating condition and for correcting such an imbalance by selectively unbalancing the current flow in the respective diagonals to correct the condition. The sawtoo,h generator is used to unbalance the alternate half-cycles in response to an integrated signal from the current-sensing means to thereby control the inverter output to provide an unbalanced diagonal flow until the condition is corrected.