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公开(公告)号：US20170331356A1
公开(公告)日：2017-11-16
申请号：US15590533
申请日：2017-05-09
申请人： DENSO CORPORATION
发明人： Kotaro NAKASHIMA
CPC分类号： H02K23/66 , G01D5/145 , H02K3/28 , H02K5/225 , H02K9/06 , H02K11/33 , H02K17/30 , H02K21/046 , H02M7/5387 , H02M2001/325
摘要： An electronic control unit includes two inverters, a magnetic sensor, a failure detection unit, an inverter driving unit, a signal examination unit, and a failed element identification unit. The magnetic sensor detects a magnetic flux generated around a winding. The failure detection unit detects an ON-state failure of the inverter. When the ON-state failure is detected, the inverter driving unit stops driving the inverter to which the ON-state failure has been detected, and continues driving the other inverter. The signal examination unit examines a presence or absence of a special signal. When there is a signal appearing according to a special magnetic flux, the failed element identification unit identifies a failed switching element based on a motor electric angle generated by the signal.
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公开(公告)号：US20170282720A1
公开(公告)日：2017-10-05
申请号：US15511910
申请日：2015-08-21
申请人： Hitachi, Ltd.
发明人： Junichi SAKANO , Kohhei ONDA , Takeshi TAMAKOSHI
CPC分类号： B60L3/0061 , B60K2001/006 , B62M6/55 , B62M6/65 , G01R31/008 , G01R31/2619 , G01R31/42 , G06F9/30 , G11C7/1006 , H02M1/08 , H02M1/32 , H02M7/48 , H02M7/5387 , H02M2001/325 , H02M2001/327 , H02P29/60
摘要： By detecting a temperature abnormality of a power semiconductor by using the power semiconductor as a temperature sensor, it is possible to detect deterioration and an abnormality of elements, a drive circuit and a cooling system, prevent a failure during an operation by taking an appropriate measure in advance, and make a system operational life long. More specifically, a power converting device which includes the power semiconductor and an arithmetic operation circuit which gives a drive instruction to the power semiconductor detects the temperature abnormality of the power semiconductor based on the drive instruction of the power semiconductor and a delay time of a control drive voltage applied to the power semiconductor to protect the power converting device. The power converting device which includes the power semiconductor and the arithmetic operation circuit gives the drive instruction compares and determines a delay time of the drive instruction and a control voltage applied to the power semiconductor and a reference value, and changes at least one of the drive instruction and the drive voltage based on a result of the comparison and the determination.
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公开(公告)号：US09780682B2
公开(公告)日：2017-10-03
申请号：US15285401
申请日：2016-10-04
CPC分类号： H02M5/458 , H02M1/08 , H02M1/084 , H02M1/12 , H02M1/14 , H02M1/32 , H02M1/42 , H02M5/4585 , H02M7/49 , H02M2001/0009 , H02M2001/0074 , H02M2001/0077 , H02M2001/325
摘要： The present disclosure relates to power management apparatuses and systems utilizing synchronous common coupling. A power management apparatus may include a synchronous common coupling, a plurality of ports, and a plurality of electrically isolated stacks connected through the synchronous common coupling. Each electrically isolated stack may include at least one stage, each stage including a source/load bridge, a flux bridge, and a direct current (DC) bus. The source/load bridge may be connected to a source or load through one of the plurality of ports, the flux bridge may be connected to an electrically isolated winding in the synchronous common coupling, and the flux bridge may be connected to the source/load bridge through the DC bus.
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公开(公告)号：US09774263B1
公开(公告)日：2017-09-26
申请号：US15229151
申请日：2016-08-05
CPC分类号： H02M3/33507 , H02J7/345 , H02J9/06 , H02M1/08 , H02M3/33569 , H02M3/337 , H02M3/3372 , H02M3/3376 , H02M3/3378 , H02M7/217 , H02M2001/0009 , H02M2001/0096 , H02M2001/325
摘要： According to one aspect, embodiments herein provide an AC-DC converter comprising a rectifier, a capacitor, a DC bus coupled to the capacitor, a plurality of first switches coupled to the DC bus, a plurality of second switches coupled between the rectifier and the first switches, a transformer having a primary winding and a secondary winding, the primary winding coupled to the plurality of first switches, the plurality of second switches, and the rectifier, and the secondary winding coupled to an output, and a controller configured, in response to a determination that the input AC power is acceptable, to operate the plurality of second switches and the plurality of first switches such that output DC voltage is maintained at a desired output DC voltage level, and operate the plurality of first switches such that a DC bus voltage on the DC bus is maintained at a desired DC bus voltage level.
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公开(公告)号：US09774243B2
公开(公告)日：2017-09-26
申请号：US14956660
申请日：2015-12-02
发明人： Laurent Gonthier , Muriel Nina
摘要： An AC/DC converter receives an AC voltage at a first terminal and a second terminal. A rectifying bridge has a first input terminal coupled via a resistive element to the first terminal and a second input terminal connected to the second terminal, with output terminals of the rectifying bridge coupled to third and fourth terminals of the converter for generating a DC voltage. A first controllable rectifying thyristor couples the first terminal to the third terminal and a second controllable rectifying thyristor couples the fourth terminal to the first terminal. The resistive element functions as an inrush protection device during a first phase when the thyristors are turned off. In a second phase, the thyristors are selectively actuated.
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公开(公告)号：US20170222543A1
公开(公告)日：2017-08-03
申请号：US15486383
申请日：2017-04-13
发明人： Ansgar Schuler , Ulrich Richter
IPC分类号： H02M1/32 , H02M7/5387 , H02M7/06
CPC分类号： H02M1/32 , H02M7/003 , H02M7/06 , H02M7/48 , H02M7/53871 , H02M2001/325
摘要： An overvoltage limitation device, for an alternating current (AC) voltage generating system having an inverter circuit unit configured to supply power to a load with dynamic load impedance, includes: input connections for connection to the inverter circuit unit, output connections for connection to an intermediate circuit voltage unit connected to the inverter circuit unit, a rectifier including an alternating current connection and a direct current connection connected to the output connections, and an AC voltage converter including a primary side connected to the input connections and a secondary side connected to the alternating current connection. The overvoltage limitation device is configured such that, when peak values of an AC voltage exceed a first predetermined value at the input connections, power is transported from the input connections via the AC voltage converter and the rectifier to the output connections, and thus the AC voltage is limited to a second predetermined value.
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107.发明授权公开(公告)号：US09712043B2
公开(公告)日：2017-07-18
申请号：US14899015
申请日：2014-06-20
发明人： Jeong Heum Lee , Sang Ho Moon , Ju Young Chang , Jae Sig Kim , Jin Su Lee
CPC分类号： H02M1/32 , H02M7/04 , H02M2001/325
摘要： An apparatus for controlling overcurrent of a grid-connected inverter due to an abnormal grid voltage includes a grid voltage sensor configured to sense a grid voltage according to an output current of the grid-connected inverter, a voltage variation calculator configured to calculate a D-axis voltage and a Q-axis voltage of the grid voltage to obtain variation values of the D-axis voltage and the Q-axis voltage, and an output current controller configured to determine whether at least one of the D-axis voltage variation value and the Q-axis voltage variation value exceeds a set value of the grid voltage variation, and decrease the output current by a predetermined value when one of the D-axis voltage variation value and the Q-axis voltage variation value exceeds the set value of the grid voltage variation.
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公开(公告)号：US20170163006A1
公开(公告)日：2017-06-08
申请号：US15367673
申请日：2016-12-02
申请人： FANUC CORPORATION
发明人： Masahiro Honda , Shuuji Kudou
IPC分类号： H01S5/042 , F21V29/508 , H01S5/024 , H02J3/14 , H05B33/08
CPC分类号： H01S5/042 , F21V29/508 , H01S5/02446 , H01S5/4025 , H02J3/14 , H02M3/156 , H02M7/00 , H02M2001/008 , H02M2001/325 , H05B33/0815
摘要： A laser power-supply device including a power-supply unit including a voltage input unit into which an AC voltage is inputted, a rectifier circuit, and a plurality of sub-switching regulator units, and a light-emitting unit, in which the plurality of sub-switching regulator units is connected in parallel to output of the rectifier circuit, the light-emitting unit includes a plurality of sub-light-emitting units, each of the sub-light-emitting units includes one light-emitting element row, a current is supplied to the one light-emitting element row from each of the plurality of sub-switching regulator units, and each of the sub-switching regulator units includes a switching circuit, a smoothing circuit, a current detection circuit that detects an output current, and a control circuit that controls the switching circuit on the basis of a current command value and the detected output current.
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公开(公告)号：US09660521B2
公开(公告)日：2017-05-23
申请号：US14693182
申请日：2015-04-22
发明人： Shohei Oi , Tomoko Oba
CPC分类号： H02M3/00 , B60L3/0023 , B60L3/0092 , B60L11/1868 , B60L2210/10 , B60L2240/526 , B60W10/00 , H02M3/158 , H02M2001/325 , Y02T10/7005 , Y02T10/7066 , Y02T10/7216
摘要： A power conversion circuit includes first to fourth switching elements connected in series between ground and high voltage electrical paths, a first reactor, a main battery, a second reactor, a sub battery, a high voltage sensor for detecting a high voltage VH between the ground and high voltage electrical paths, and a controller. Upon issuance of an instruction for turning off all of the first to fourth switching elements, the controller determines that the third switching element is experiencing an ON failure when the high voltage VH is equal to the sum of a battery voltage VB1 of the main battery and a battery voltage VB2 of the sub battery, to thereby allow electrical power to be transferred between the batteries and a load even in the event of occurrence of the ON failure in the switching element.
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公开(公告)号：US20170123445A1
公开(公告)日：2017-05-04
申请号：US14929456
申请日：2015-11-02
申请人： DELL PRODUCTS, L.P.
发明人： MARK A. MUCCINI , STUART A. BERKE , LEI WANG
摘要： A method of detecting and disabling a failed power supply in a redundant power supply system is disclosed. The method includes detecting, via a first controller, an output voltage and an output current of a first power supply providing power to the redundant power supply system. The first controller determines if the output voltag0voltage is greater than the maximum output voltage threshold, the first controller determines if the output current is equal to zero. In response to determining that the output current is not equal to zero and not less than a common share bus current, the first power supply is disabled such that the first power supply does not provide power to the power supply system.
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