专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明公开

EP4350946A1 RESONANCE-TYPE POWER CONVERSION CIRCUIT AND NON-CONTACT POWER SUPPLY SYSTEM 审中-实审
公开(公告)号：EP4350946A1
公开(公告)日：2024-04-10
申请号：EP22811025.0
申请日：2022-03-30
申请人： OMRON Corporation , National University Corporation Chiba University
发明人： MISHIMA, Taichi , NAGAOKA, Shingo , UEMATSU, Takeshi , SEKIYA, Hiroo
IPC分类号： H02J50/10 , H02M3/28
摘要： A resonance-type power converter circuit includes: a resonance circuit including a first LC resonance circuit and a switching element, and outputting an output voltage or current to a load; a detector circuit detecting output information; an calculation controller searching for a maximum point in a characteristic of the output information at an operating frequency based on the detected output information, and determining an operating frequency corresponding to the searched maximum point; and a signal generator generating a drive control signal having the determined operating frequency, and controlling the frequency based on the drive control signal. The resonance circuit has a characteristic of output information at the operating frequency having a load independent point not depending on the load and corresponding to the maximum point, and feeds back a drive control signal including the output information to the switching element, and drives it at the load independent point by frequency control.

2. 发明公开

EP4395148A1 POWER CONVERTER AND DC POWER SUPPLY SYSTEM 审中-实审
公开(公告)号：EP4395148A1
公开(公告)日：2024-07-03
申请号：EP22880769.9
申请日：2022-09-27
申请人： OMRON Corporation
发明人： UEMATSU, Takeshi
IPC分类号： H02M3/00 , H02J1/00
CPC分类号： H02M3/00 , H02J1/00
摘要： A power conversion device that converts DC power input from a DC power supply and outputs the DC power, the power conversion device including: an output current value acquisition unit acquiring an output current value; an output voltage value acquisition unit acquiring an output voltage value; and a controller controlling an output voltage. The controller includes a correction value generator configured to generate an output current correction value, based on an output current target value that is a target value of an output current, and the output current value, and a droop controller configured to droop an output voltage target value that is a target value of the output voltage, based on a corrected output current value that is the output current value corrected using the output current correction value. The output voltage is controlled based on the output voltage target value dropped and the output voltage value.

3. 发明公开

EP4181378A1 POWER CONVERSION DEVICE AND POWER SYSTEM 审中-实审
公开(公告)号：EP4181378A1
公开(公告)日：2023-05-17
申请号：EP21838628.2
申请日：2021-07-05
申请人： OMRON Corporation
发明人： SATO, Mitsuru , NAGAOKA, Shingo , UEMATSU, Takeshi
IPC分类号： H02M3/28
摘要： At a first node (N1), an intermediate voltage potential occurs between a voltage potential of the first input terminal (P1) and a voltage potential of the second input terminal (P2). A second node (N2) is connected to ends (b1 to b3) of primary windings (w1, w4, w7) of transformers (T1 to T3) of LLC resonant converters (11 to 13). A switch circuit is connected between the first node (N1) and the second node (N2). A control circuit (15) is configured to turn on a switch circuit (SW) when a load current of a load apparatus (6) connected to a first output terminal (P3) and a second output terminal (P4) is equal to or smaller than a predetermined criterion, and turn off the switch circuit (SW) when the load current of the load apparatus (6) is larger than the predetermined criterion.

4. 发明公开

EP3836378A1 RESONANT CONVERTER, AND CONTROL CIRCUIT AND CONTROL METHOD FOR SAME 审中-公开
公开(公告)号：EP3836378A1
公开(公告)日：2021-06-16
申请号：EP20749384.2
申请日：2020-01-30
申请人： OMRON Corporation
发明人： UEMATSU, Takeshi
IPC分类号： H02M3/28
摘要： A resonant converter controller circuit is provided. Each period in drive control of the resonant converter has a drive time interval for driving the resonant converter and a pause time interval for pausing the resonant converter. The resonant converter controller circuit includes a first oscillating means for generating a clock signal of a predetermined fundamental frequency, a second oscillating means for generating a sawtooth wave signal synchronized with the clock signal, a third oscillating means for generating a rectangular wave signal having a predetermined duty and a predetermined frequency higher than a frequency of the sawtooth wave signal, comparison means for outputting a comparison signal indicating the drive time interval, by comparing the sawtooth wave signal with a threshold signal, which is generated based on a difference voltage between an output voltage of the resonant converter and a target voltage, and which indicates a ratio of the drive time interval to the pause time interval, and a logical operation means for generating a drive control signal based on the comparison signal and the rectangular wave signal to drive and control the resonant converter.

5. 发明公开

EP3836348A1 CONTACTLESS POWER TRANSMISSION SYSTEM 审中-公开
公开(公告)号：EP3836348A1
公开(公告)日：2021-06-16
申请号：EP19908841.0
申请日：2019-11-28
申请人： OMRON Corporation
发明人： NAGAOKA, Shingo , MISHIMA, Taichi , UEMATSU, Takeshi
IPC分类号： H02J50/12 , H02J50/80
摘要： A detection circuit detects at least one of a value of a current flowing through a power transmitting coil (L1), and a value of a current or voltage generated by an auxiliary coil (L3). A control circuit (16) determines a transmitting frequency based on the value detected by the detection circuit, the transmitting frequency at least locally minimizing load dependence. The control circuit (16) determines a voltage for the transmitting power at which an output voltage of a power receiver apparatus (20) is equal to a predetermined target voltage when generating the transmitting power having the transmitting frequency determined, and controls the power supply circuit to generate the transmitting power having the transmitting frequency and voltage determined.

6. 发明公开

EP4012887A1 CONTACTLESS POWER TRANSMISSION SYSTEM 有权
公开(公告)号：EP4012887A1
公开(公告)日：2022-06-15
申请号：EP19940520.0
申请日：2019-08-05
申请人： OMRON Corporation
发明人： MISHIMA, Taichi , ITO, Yuki , NAGAOKA, Shingo , UEMATSU, Takeshi
IPC分类号： H02J50/80 , H02J50/60
摘要： A control circuit controls a power supply circuit to generate transmitting power having a frequency varying within a frequency range. The control circuit determines a stably transmitting frequency based on a detected output voltage of a power receiver apparatus 20, the stably transmitting frequency indicating a frequency of the transmitting power at which dependency of the output voltage on a load value of the power receiver apparatus 20 is at least locally minimized within the frequency range. The control circuit determines a transmitting voltage based on the detected output voltage, the transmitting voltage indicating a voltage of the transmitting power at which the output voltage reaches a target voltage when generating transmitting power having the stably transmitting frequency. The control circuit controls the power supply circuit to generate transmitting power having the stably transmitting frequency and the transmitting voltage.

7. 发明公开

EP4398437A1 POWER CONVERSION APPARATUS 审中-实审
公开(公告)号：EP4398437A1
公开(公告)日：2024-07-10
申请号：EP22863912.6
申请日：2022-03-23
申请人： OMRON Corporation
发明人： UEMATSU, Takeshi
IPC分类号： H02J3/38 , H02M7/48
CPC分类号： H02M7/48 , H02J3/38
摘要： A power conversion device that converts input power into AC power and outputs the converted power, the power conversion device including: an active and reactive output current calculator configured to calculate an active output current value and a reactive output current value based on a detected output current value; an active and reactive output voltage value calculator configured to calculate an active output voltage value and a reactive output voltage value based on a detected output voltage value; a reactive output voltage controller configured to adjust a reactive output voltage target value based on an active output current target value, the active output current value, and the reactive output voltage value; and an active output voltage controller configured to adjust an active output voltage target value based on a reactive output current target value, the reactive output current value, and the active output voltage value.

8. 发明公开

EP4340177A1 DEVICE FOR CONTROLLING DRIVING OF COMPOSITE RESONANT CIRCUIT AND WIRELESS POWER DELIVERY SYSTEM 审中-实审
公开(公告)号：EP4340177A1
公开(公告)日：2024-03-20
申请号：EP22807257.5
申请日：2022-03-29
申请人： OMRON Corporation
发明人： MISHIMA, Taichi , ITO, Yuki , NAGAOKA, Shingo , UEMATSU, Takeshi
IPC分类号： H02J50/12 , H02J50/80 , H02J7/00
摘要： A drive control apparatus is configured to drive and control a composite resonance circuit including LC resonant circuits including inductances L of power transmitting and receiving coils electromagnetically coupled to each other. The drive control apparatus includes: an inverter circuit configured to drive the composite resonance circuit by converting input DC power into AC power by switching the DC power at a predetermined operating frequency; an input current detector configured to detect an input current of the inverter circuit; and a frequency controller and driver configured to generate a drive signal of the inverter circuit while changing the operating frequency by using a predetermined extreme value search method to drive the inverter circuit, search for a resonance frequency of the composite resonance circuit based on the detected input current, and set the operating frequency based on the searched resonance frequency.

9. 发明公开

EP4170863A1 ISOLATED RESONANCE CIRCUIT DEVICE AND CONTACTLESS POWER SUPPLY SYSTEM 审中-实审
公开(公告)号：EP4170863A1
公开(公告)日：2023-04-26
申请号：EP21824917.5
申请日：2021-05-21
申请人： OMRON CORPORATION
发明人： MISHIMA, Taichi , ITO, Yuki , NAGAOKA, Shingo , UEMATSU, Takeshi
IPC分类号： H02J50/12 , H02J7/00 , H02M7/12 , H02M7/48
摘要： In an insulated resonance circuit device, a first resonance circuit includes first and second LC resonance circuits electromagnetically coupled to each other and electrically insulated from each other, oscillates at a predetermined first resonance frequency based on an input AC voltage, and outputs an oscillation signal voltage. The second resonance circuit having a second resonance frequency substantially identical to the first resonance frequency resonates with the oscillation signal voltage to detect the oscillation signal voltage, and outputs the detected oscillation signal voltage. A control circuit compare the oscillation signal voltage from the second resonance circuit with a comparison signal voltage for obtaining a predetermined target output voltage and/or a predetermined target output current to generate and output gate signals for controlling a rectifier circuit.

10. 发明公开

EP3846187A1 TRANSFORMER AND POWER CONVERSION DEVICE 有权
公开(公告)号：EP3846187A1
公开(公告)日：2021-07-07
申请号：EP19855268.9
申请日：2019-03-07
申请人： OMRON Corporation
发明人： ISHIBASHI, Hiroki , NAGAOKA, Shingo , ZAITSU, Toshiyuki , UEMATSU, Takeshi
IPC分类号： H01F38/08 , H01F27/24
摘要： A first winding is wound around a main core in a first section. A second winding is wound around the main core in a second section. A first bypass core is provided along the first section and outside the first winding. A third winding is wound around the main core and the first bypass core in the first section. A second bypass core is provided along the second section and outside the second winding. A fourth winding is wound around the main core and the second bypass core in the second section. Gaps are formed in the main core so as to intersect a loop of the main core, at positions separated from both the first and second sections.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式