公开(公告)号：EP3396841A1

公开(公告)日：2018-10-31

申请号：EP18162670.6

申请日：2012-03-13

申请人： Daihen Corporation

发明人： HATTORI, Nobuyuki ,  OHORI, Akihiro ,  MUNECHIKA, Hiroki

IPC分类号： H02M7/5387 ,  H02M7/487 ,  H02M7/5395 ,  H02M1/00

CPC分类号： H02M7/44 ,  H02M1/12 ,  H02M7/487 ,  H02M7/5387 ,  H02M7/5395 ,  H02M2001/0025 ,  H02M2001/0054 ,  H02M2007/53876 ,  Y02B70/1491

摘要： A control circuit reduces switching loss by periodically stopping switching elements, and reduces the difference between the time for which positive switching elements are in on state and the time for which negative switching elements are in on state. The control circuit includes a command value signal generator generating command value signals Xu1, Xv1, and Xw1 from line voltage command value signals Xuv, Xvw, and Xwu, and includes a PWM signal generator generating PWM signals by the command value signals Xu1, Xv1, and Xw1. The command value signals Xu1, Xv1, and Xw1 are continuously at "0" for a predetermined period, and are continuously at "2" for another period. This enables reducing the difference between the period for which the PWM signals are low and the period for which they are highl.

公开(公告)号：EP2982039B1

公开(公告)日：2018-08-08

申请号：EP13714308.7

申请日：2013-04-05

申请人： ABB Schweiz AG

发明人： LOKRANTZ, Annika ,  STÅLHAMMAR, Kristoffer ,  JIANG-HÄFNER, Ying ,  SJÖBERG, Christer ,  DÖFNÄS, Lars ,  VAN-DER-MERWE, Wim

IPC分类号： H03K17/18 ,  H03K17/567 ,  H03K17/687

CPC分类号： H03K17/567 ,  H02M7/537 ,  H02M2001/0054 ,  H02M2001/0058 ,  H03K17/18 ,  H03K17/6871 ,  H03K2217/0027 ,  H03K2217/0036

摘要： A method for controlling a first and a second reverse-conducting insulated gate bipolar transistor (RC-IGBT), electrically connected in series, is disclosed. A collector of the first RC-IGBT is electrically connected to a positive pole of a direct current voltage source, and an emitter of the second RC-IGBT is electrically connected to a negative pole of the DC voltage source. Further, an emitter of the first RC-IGBT is electrically connected to a collector of the second RC-IGBT to form an alternating current terminal. A gate voltage is applied to respective gates of the first and second RC-IGBTs, wherein the gate voltage is controlled based on a magnitude and a direction of an output current on the AC terminal and on a command signal alternating between a first and a second value.

公开(公告)号：EP1917713B1

公开(公告)日：2018-08-08

申请号：EP06813778.5

申请日：2006-08-25

申请人： Consarc Corporation

发明人： KEOUGH, Graham A.

IPC分类号： H02P5/00 ,  H05B6/06 ,  H02M1/00 ,  H02M7/5387

CPC分类号： H05B6/067 ,  H02M2001/0054 ,  H02M2007/53878 ,  Y02B70/1491

摘要： A method is provided for output control of a pulse width modulated power inverter used with a substantially resistive, single phase, ac load such as an electro-slag remelting furnace. In one application of the method, during each of the inverter's half cycle outputs, active switching devices are alternatively pulsed on and off during the half cycle so that only half of the switching transients in the half cycle are handled by one of the active switching devices.

公开(公告)号：EP3350910A1

公开(公告)日：2018-07-25

申请号：EP16845422.1

申请日：2016-09-13

申请人： TM4 Inc.

发明人： EL YACOUBI, Maalainine ,  NOURRY, Marion ,  BLANCHARD ST-JACQUES, Benoit ,  FLEURY, Pascal ,  CYR, Jean-Marc ,  AMAR, Mohammed

IPC分类号： H02M1/32

CPC分类号： H02M1/32 ,  H02M1/08 ,  H02M3/158 ,  H02M7/5387 ,  H02M2001/0054 ,  H02M2001/344 ,  H02M2001/348 ,  H03K17/08128

摘要： The present disclosure relates to a power converter configured for limiting switching overvoltage. The power converter comprises a bottom commutation cell that includes a bottom power electronic switch and a bottom compensation circuit connected to a bottom parasitic inductance. The bottom compensation circuit applies a sample of the voltage induced across the bottom parasitic inductance at turn-off of the bottom power electronic switch to the reference node of the bottom gate driver. The power converter also comprises a top commutation cell that includes top power electronic switch and a top compensation circuit connected to the bottom parasitic inductance. The top compensation circuit applies a sample of the voltage induced across the bottom parasitic emitter upon turn-off of the top power electronic switch to the reference node of the top gate driver. The top and bottom commutation cells are part of a loop, being connected at a junction of the collector of the bottom power electronic switch and the emitter of the top power electronic switch.

公开(公告)号：EP3346596A1

公开(公告)日：2018-07-11

申请号：EP17187750.9

申请日：2017-08-24

申请人： STMicroelectronics S.r.l.

发明人： BIANCO, Alberto ,  DELL'ORO, Marco ,  SCAPPATURA, Giuseppe ,  LONGHI, Luca ,  SUCAMELI, Matteo ,  CIAMBELLOTTI, Dino

IPC分类号： H02M3/335 ,  H02M3/337

CPC分类号： H02M3/33507 ,  H02M1/08 ,  H02M3/33569 ,  H02M3/3376 ,  H02M2001/0009 ,  H02M2001/0054 ,  Y02B70/1433 ,  Y02B70/1491

摘要： A control circuit (102) controls a switching circuit (106) of a resonant converter (100), where the switching circuit includes first and second power switches (Q1, Q2). A first on time of the first power switch (Q1) and a second on time of the second power switch (Q2) are controlled to generate a square wave signal (VHB) to drive a resonant circuit (108). The control circuit (102) controls the first on time based on a zero current detection time indicating detection of a zero current crossing of a resonant current (I TANK ) generated in the resonant circuit (108) in response to the square wave signal and on a time shift delay time based on an output voltage (Vout) of the resonant converter. The second on time of the second power switch control is based on the zero current detection time detected for the first power switch (Q1) and on the time shift delay time.

公开(公告)号：EP3345456A1

公开(公告)日：2018-07-11

申请号：EP16759740.0

申请日：2016-08-30

申请人： Commissariat à l'Énergie Atomique et aux Énergies Alternatives

发明人： PERICHON, Pierre ,  LADHARI, Othman ,  STERNA, Léo

IPC分类号： H05B33/08 ,  H02M7/217

CPC分类号： H05B33/0818 ,  H02M1/081 ,  H02M7/217 ,  H02M2001/0054 ,  H05B33/0815 ,  H05B33/0842 ,  H05B33/0845

摘要： The invention relates to an electronic converter which allows a power transfer from an AC voltage source, connected between an input terminal and a common terminal, to a load connected between an output terminal and a reference terminal, the AC voltage including positive alternations interspersed with negative alternations at a first frequency, said converter comprising: an input inductance connected to the input terminal; an output inductance connected to the output terminal; a storage capacitor arranged between the two inductances; a chopper circuit configured to: in a first state, charge the input inductance via the AC voltage source and discharge the storage capacitance in the output inductance by supplying the load; in a second state, discharge the input inductance in the storage capacitance and discharge the output inductance by supplying the load; and a device for controlling the chopper circuit, configured to activate, during each of the positive and negative alternations, consecutive operating cycles at a second frequency higher than the first frequency, each operating cycle being made up of first and second states, the first operating state having a duty cycle which varies so as to obtain a constant output voltage between the output terminal and the reference terminal during each of the positive and negative alternations.

公开(公告)号：EP3334001A1

公开(公告)日：2018-06-13

申请号：EP17179557.8

申请日：2017-07-04

申请人： LSIS Co., Ltd.

发明人： CHUNG, YONG HO ,  SON, GUM TAE

IPC分类号： H02J3/18 ,  H02M7/49 ,  H02M1/32

CPC分类号： H02J3/1842 ,  H02J3/1857 ,  H02M1/088 ,  H02M7/49 ,  H02M2001/0054 ,  H02M2001/325 ,  H02M2007/4835 ,  Y02B70/1491 ,  Y02E40/26

摘要： A reactive power compensation apparatus (100) includes one or more phase clusters (130, 132, 134) each comprising a plurality of cells, and a controller (110) controlling the one or more phase clusters. When at least one cell in a specific phase cluster among the one or more phase clusters is faulty, the controller controls a voltage of each cell in each of the remaining phase clusters except for the specific phase cluster to be controlled, using a modulation index.

公开(公告)号：EP2961048B1

公开(公告)日：2018-03-07

申请号：EP15173247.6

申请日：2015-06-23

申请人： Huawei Technologies Co., Ltd.

发明人： GUO, Haibin ,  XIN, Kai ,  LU, Li

IPC分类号： H02M1/00

CPC分类号： H02M7/537 ,  H02M7/53871 ,  H02M7/5395 ,  H02M2001/0032 ,  H02M2001/0054 ,  Y02B70/1491 ,  Y02B70/16

摘要： Embodiments of the present invention disclose an inverter control method, apparatus, and system. The method in the embodiments of the present invention includes: obtaining a frequency distribution curve of an inverter switch according to an output power and an input voltage that are of an inverter; when an area to which the inverter belongs is a first area and the inverter switch works at a second frequency, switching the inverter switch to a first frequency; and when the area to which the inverter belongs is a second area and the inverter switch works at the first frequency, switching the inverter switch to the second frequency. In the embodiments of the present invention, whether a working frequency of an inverter switch needs to be changed is determined according to an output power and an input voltage, which improves control efficiency, thereby effectively improving conversion efficiency of an inverter.

公开(公告)号：EP3229358A1

公开(公告)日：2017-10-11

申请号：EP15865831.0

申请日：2015-11-20

申请人： Panasonic Intellectual Property Management Co., Ltd.

发明人： SATOH, Nobuaki

IPC分类号： H02M3/28 ,  H02M3/335

CPC分类号： H02M3/33523 ,  H02M1/08 ,  H02M1/38 ,  H02M1/4208 ,  H02M1/4225 ,  H02M1/4241 ,  H02M3/28 ,  H02M3/335 ,  H02M2001/0054 ,  H02M2001/007 ,  Y02B70/126

摘要： A switching power supply device includes a power factor improvement circuit, a phase-shifted full bridge type DC/DC converter that is arranged in a rear stage of the power factor improvement circuit and has a full-bridge type switching circuit, an output current detecting circuit for detecting an output current to be supplied to a load, an output voltage detecting circuit for detecting an output voltage to be supplied to the load, and a power factor improvement circuit output voltage detecting circuit for detecting a power factor improvement circuit output voltage, which is input from the power factor improvement circuit to the DC/DC converter. The switching power supply device further includes a control unit for dynamically changing dead times of the full-bridge type switching circuit based on the power factor improvement circuit output voltage, and the output current and the output voltage to be supplied to the load, and the control unit applies the dead times that have been changed to control switching of the full-bridge type switching circuit.

摘要翻译： 开关电源装置包括功率因数改善电路，设置在功率因数改善电路的后级的具有全桥型开关电路的移相全桥型DC / DC转换器，输出电流检测电路 用于检测要提供给负载的输出电流的电路，用于检测要提供给负载的输出电压的输出电压检测电路以及用于检测功率因数提高电路输出电压的功率因数提高电路输出电压检测电路， 其从功率因数改善电路输入到DC / DC转换器。 开关电源装置还包括控制单元，用于基于功率因数改善电路输出电压以及要提供给负载的输出电流和输出电压来动态地改变全桥型开关电路的死区时间， 控制单元应用已经改变的死区时间来控制全桥式开关电路的开关。

公开(公告)号：EP3203624A1

公开(公告)日：2017-08-09

申请号：EP17154214.5

申请日：2017-02-01

申请人： TDK Corporation

发明人： NAKAHORI, Wataru

IPC分类号： H02M3/28

CPC分类号： H02M3/33507 ,  H01F27/40 ,  H01F2027/408 ,  H01F2038/006 ,  H02M1/08 ,  H02M3/285 ,  H02M3/33569 ,  H02M2001/0054 ,  Y02B70/1491

摘要： A switching power supply unit includes an N-number (N: an integer of 2 or greater) of transformers; an N-number of inverter circuits; a rectifying smoothing circuit including a {2 × (N + 1)}-number of rectifying devices, a choke coil, and a capacitor; an additional winding disposed to be interlinked with each of magnetic paths formed in the N-number of transformers; and a driver. In the rectifying smoothing circuit, a (N + 1)-number of arms each have two of the rectifying devices, and are disposed in parallel to one another between the pair of output terminals, a secondary winding in each of the N-number of transformers is coupled between adjacent ones of the (N + 1)-number of arms to individually form an H-bridge coupling, and the additional winding is coupled in series to one or more of the secondary windings in the N-number of transformers.

摘要翻译： 开关电源单元包括N个（N：2或更大的整数）变压器; N个逆变器电路; 包括{2×（N + 1）}个整流器件，扼流线圈和电容器的整流平滑电路; 附加绕组，所述附加绕组被设置成与形成在所述N个变压器中的每个磁路互连; 和一个司机。 在整流平滑电路中，每一个（N + 1）臂具有两个整流装置，并且在一对输出端子之间彼此并联设置，N个 变压器耦合在（N + 1）个臂的相邻臂之间以单独形成H桥耦合，并且附加绕组串联耦合到N个变压器中的一个或多个次级绕组。