公开(公告)号：US20160285377A1

公开(公告)日：2016-09-29

申请号：US15064103

申请日：2016-03-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kenichi TAKAGI ,  Shuntaro INOUE ,  Takahide SUGIYAMA ,  Kenichiro NAGASHITA ,  Yoshitaka NIIMI ,  Masaki OKAMURA

IPC分类号： H02M3/335

CPC分类号： H02M3/33546 ,  H02M3/158 ,  H02M3/33561 ,  H02M3/33576 ,  H02M3/33584 ,  H02M2001/0032 ,  H02M2001/0048 ,  Y02B70/1491 ,  Y02B70/16

摘要： An electric power conversion circuit system for reducing core loss in a transformer particularly during light loading and improving conversion efficiency during light loading comprising an electric power conversion circuit composed of a primary side conversion circuit having a left arm and a right arm and a secondary side conversion circuit having a left arm and a right arm, and a control circuit for controlling switching of switching transistors of the first side conversion circuit and the secondary side conversion circuit. When the output voltage is at a relatively light load, the control circuit controls to change the duty of the transmitting side among the primary side conversion circuit and the secondary side conversion circuit and controls to change the half-bridge phase differences of the left arm and the right arm of the primary side conversion circuit and the secondary side conversion circuit, respectively.

摘要翻译： 一种电力转换电路系统，用于减轻变压器中的磁芯损耗，特别是在轻负载期间，并且提高了轻载时的转换效率，包括由具有左臂和右臂的一次侧转换电路和二次侧转换构成的电力转换电路 具有左臂和右臂的电路，以及用于控制第一侧转换电路和次级侧转换电路的开关晶体管的开关的控制电路。 当输出电压处于相对较轻的负载时，控制电路控制改变初级侧转换电路和次级侧转换电路之间的发送侧的占空比，并且控制以改变左臂的半桥相位差 初级侧转换电路的右臂和次级侧转换电路。

公开(公告)号：US20170063245A1

公开(公告)日：2017-03-02

申请号：US15241522

申请日：2016-08-19

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kenichi TAKAGI ,  Shuntaro INOUE ,  Takahide SUGIYAMA ,  Kenichiro NAGASHITA ,  Yoshitaka NIIMI ,  Masaki OKAMURA

IPC分类号： H02M3/335 ,  H02M1/14

CPC分类号： H02M3/33546 ,  B60L15/007 ,  B60L2210/30 ,  B60L2210/40 ,  B60L2240/526 ,  B60L2240/527 ,  B60L2240/529 ,  H02M1/14 ,  H02M3/33576 ,  H02M2001/0048 ,  H02M2001/0083 ,  Y02B70/1491

摘要： An electric power conversion circuit comprises U-phase and V-phase switching circuits, a transformer, and an α-phase switching circuit. A primary winding of a transformer is connected between the U-phase switching circuit and the V-phase switching circuit, and both ends of a secondary winding are connected to the α-phase switching circuit. The α-phase switching circuit comprises positive and negative terminals, a half bridge including and two switching devices, and a voltage divider circuit. The half bridge is provided between the positive terminal and the negative terminal, and a common connection point between the two switching devices is connected to one end of the secondary winding. A voltage divider output point of the voltage divider circuit is connected to the other end of the secondary winding.

摘要翻译： 电力转换电路包括U相和V相开关电路，变压器和α相开关电路。 变压器的初级绕组连接在U相开关电路和V相开关电路之间，次级绕组的两端连接到α相开关电路。 该α相开关电路包括正端子和负端子，一个半桥和两个开关装置，以及一个分压电路。 半桥设置在正极端子和负极端子之间，并且两个开关装置之间的公共连接点连接到次级绕组的一端。 分压器电路的分压器输出点连接到次级绕组的另一端。

公开(公告)号：US20160276940A1

公开(公告)日：2016-09-22

申请号：US15064084

申请日：2016-03-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Shuntaro INOUE ,  Kenichi TAKAGI ,  Takahide SUGIYAMA ,  Kenichiro NAGASHITA ,  Masaki OKAMURA ,  Yoshitaka NIIMI

IPC分类号： H02M3/335 ,  H02M1/08

CPC分类号： H02M3/33546 ,  H02M1/08 ,  H02M3/33584 ,  H02M2001/0009

摘要： The present invention provides a power conversion circuit system in which a circulating current can be reduced by accurately detecting the circulating current, to thereby improve efficiency in power conversion. The power conversion circuit system includes a power conversion circuit composed of a primary conversion circuit having left and right arms and a secondary conversion circuit having left and right arms, and a control circuit for controlling switching of switching transistors in the primary and secondary conversion circuits. The control circuit detects the circulating current at at least one of timings lagged by π/2+φ/2 from at least either a peak timing or a valley timing in a carrier counter where φ represents a difference in phase between the primary and secondary conversion circuits, and performs feedback control for reducing the detected circulating current to zero.

摘要翻译： 本发明提供一种功率转换电路系统，其中可以通过精确地检测循环电流来降低循环电流，从而提高功率转换的效率。 电力转换电路系统包括由具有左臂和右臂的一次转换电路和具有左右臂的次级转换电路组成的电力转换电路，以及用于控制一次和二次转换电路中的开关晶体管的开关的控制电路。 控制电路在载波计数器中的峰值定时或谷值定时的至少一个时刻以至少一个延迟π/ 2 +φ/ 2的定时检测循环电流，其中，φ表示主转换和次转换之间的相位差 电路，并执行反馈控制，将检测到的循环电流减少到零。

公开(公告)号：US20160172984A1

公开(公告)日：2016-06-16

申请号：US14962391

申请日：2015-12-08

申请人： TOYOTA JIDOSHA KABUSHIKI KAISHA

发明人： Kenichi TAKAGI ,  Shuntaro INOUE ,  Takahide SUGIYAMA ,  Kenichiro NAGASHITA ,  Yoshitaka NIIMI ,  Masaki OKAMURA

IPC分类号： H02M3/335

CPC分类号： H02M3/33584 ,  H02M3/1582 ,  H02M3/33561 ,  H02M2001/0064 ,  H02M2001/009

摘要： An electric power conversion circuit and a control circuit are provided. The electric power conversion circuit includes a primary conversion circuit and a secondary conversion circuit. The primary conversion circuit has switching transistors and a primary coil of a transformer. The secondary conversion circuit has switching transistors and a secondary coil of the transformer. Reactors and a connection port are connected between a connection point of the switching transistors and a connection point of the other the switching transistors in the primary conversion circuit.

摘要翻译： 提供电力转换电路和控制电路。 电力转换电路包括一次转换电路和二次转换电路。 一次转换电路具有开关晶体管和变压器的初级线圈。 二次转换电路具有开关晶体管和变压器的次级线圈。 反应器和连接端口连接在开关晶体管的连接点和第一转换电路中的开关晶体管的另一端的连接点之间。