公开(公告)号：US20220021299A1

公开(公告)日：2022-01-20

申请号：US17294112

申请日：2019-11-29

申请人： Rohm Co., Ltd.

发明人： Tatsuya MIYAZAKI ,  Yuta OKAWAUCHI ,  Hirotaka OTAKE ,  Mamoru TSURUYA

IPC分类号： H02M1/42 ,  H02M7/162 ,  H02M1/00 ,  H02M3/335 ,  H02M7/5395

摘要： A control device 100 is used as a principle controller of an electric power conversion device 1 having a switch circuit 10 including transistors M1-M4. The control device: subtracts, from a reference signal REF set in accordance with an operating mode MODE (PFC/INV) of the electric power conversion device 1, a product signal (K×I) obtained by multiplying an object-of-control electric current I of the switch circuit 10 by a prescribed coefficient K; and generates, on the basis of the computation result (=REF−K×I), control signals S1-S4 (and consequently, gate signals G1-G4) for the transistors M1-M4.

公开(公告)号：US20210234474A1

公开(公告)日：2021-07-29

申请号：US16967552

申请日：2018-11-14

申请人： ROHM CO., LTD.

发明人： Hirotaka OTAKE ,  Tatsuya MIYAZAKI ,  Mamoru TSURUYA

IPC分类号： H02M7/487 ,  H02M1/42 ,  H02M7/5395

摘要： AC power supply device 1 includes input capacitors 11 and 12 connected at a neutral point X of a three-phase output, transistor bridges 20* (where * denotes U, V, and/or W) each consisting of PWM control badges 20*1 and 20*2 each including two switch elements, transformers T* connected to output terminals of the transistor bridges 20*, reactors Ls* connected to the transformers T*, smoothing capacitors 40* connected to the reactors Ls*. The transformers T* are autotransformers including a core 33* and windings 31* and 32* coupled with each other via the core 33*. One ends of the windings are connected to output terminals of the PWM control bridges 20*1 and 20*2, respectively, while the other terminals are connected to the reactors Ls*. The windings 31* and 32* are wound in such directions that magnetic fluxes generated in the core 33* are cancelled with each other.

公开(公告)号：US20190326826A1

公开(公告)日：2019-10-24

申请号：US16475607

申请日：2018-02-05

申请人： ROHM CO., LTD. ,  POWER ASSIST TECHNOLOGY LTD.

发明人： Hirotaka OTAKE ,  Mamoru TSURUYA

IPC分类号： H02M3/335

摘要： This DC power supply device comprises: a transformer having a primary magnetic core, a secondary magnetic core, at least one primary coil wound on the primary magnetic core, and a plurality of secondary coils wound on the secondary magnetic core; and at least one bridge composed of transistors. The DC power supply device has: a primary circuit connected to the primary coil; and a plurality of secondary circuits respectively connected to the plurality of secondary coils and each having a first secondary resonance capacitor, a second secondary resonance capacitor, and a smoothing circuit. The primary circuit and the plurality of secondary circuits are electrically insulated from each other by the transformer. In the plurality of secondary circuits, output parts of respective smoothing circuits are serially connected to each other. The primary magnetic core and the secondary magnetic core are disposed to face each other with an insulator disposed therebetween.

公开(公告)号：US20190115851A1

公开(公告)日：2019-04-18

申请号：US16092144

申请日：2017-04-11

申请人： ROHM CO., LTD.

发明人： Hirotaka OTAKE ,  Yusuke NAKAKOHARA ,  Mamoru TSURUYA

IPC分类号： H02M7/5387 ,  H01F27/24 ,  H02M7/5395

摘要： The alternating-current power supply device 1 has: an alternating-current generation bridge 10 for obtaining an alternating-current output; PWM control bridges 20, 30, each including two switch components; and a coupling reactor 40 connected to the PWM control bridges 20, 30. The coupling reactor 40 includes: a core 43; and windings 41, 42 which are connected at one end to respective output ends of the PWM control bridges 20, 30 while being coupled with each other via the core 43. The windings 41, 42 are respectively wound in such directions that magnetic fluxes generated in the core 43 cancel each other out.

公开(公告)号：US20170025963A1

公开(公告)日：2017-01-26

申请号：US15303683

申请日：2015-05-18

申请人： ROHM CO., LTD.

发明人： Hirotaka OTAKE ,  Yusuke NAKAKOHARA ,  Mamoru TSURUYA

IPC分类号： H02M3/335 ,  H02M1/14 ,  H02M1/08

CPC分类号： H02M3/33546 ,  H02M1/08 ,  H02M1/14 ,  H02M3/285 ,  H02M3/337 ,  H02M2001/0009 ,  H02M2001/0058 ,  H02M2001/0064 ,  Y02B70/1433 ,  Y02B70/1491

摘要： A power supply device has resonance-type DC-DC converters of three phases connected in parallel, said converters respectively having operation phases shifted from each other by 120°. The converters include switching circuits, series resonant circuits, and rectifying smoothing circuits, respectively. The series resonant circuits include first transformers, second transformers and resonance capacitors, respectively. Each of primary winding wires of the first transformers, each of primary winding wires of the second transformers, and respective resonance capacitors are connected in series. Each of secondary winding wires of the second transformers is connected to each of the rectifying smoothing circuits. The first transformers are provided with different cores, respectively, the primary winding wires and the secondary winding wires are insulated from each other by means of dividing bobbins, and the secondary winding wires of respective phases are connected in parallel.

摘要翻译： 电源装置具有三相并联连接的谐振型DC-DC转换器，所述转换器分别具有彼此相差120°的操作相位。 转换器分别包括开关电路，串联谐振电路和整流平滑电路。 串联谐振电路分别包括第一变压器，第二变压器和谐振电容器。 第一变压器的初级绕组线，第二变压器的初级绕组线以及相应的谐振电容器分别串联连接。 每个第二变压器的次级绕组线连接到每个整流平滑电路。 第一变压器分别具有不同的磁芯，初级绕组线和次级绕组线通过分隔线轴彼此绝缘，并且各相的次级绕组线并联连接。