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公开(公告)号：EP4432537A1
公开(公告)日：2024-09-18
申请号：EP23161480.1
申请日：2023-03-13
申请人： Hitachi Energy Ltd
发明人： Asoodar, Mohsen
IPC分类号： H02M1/34
摘要： An apparatus (100) is provided, comprising a plurality of interconnected switching devices (1, 2) at least two of which are connected in series so as to form at least one series-connection of switching devices, and a plurality of switching device voltage balancing circuits, VBCs, (3, 4) each of which corresponds to and is connected to a respective switching device (1, 2) of the at least one series-connection of switching devices (1, 2), for limiting the maximum voltage that each switching device (1, 2) of the at least one series-connection of switching devices (1, 2) is subjected to. Each of the plurality of switching device VBCs (3, 4) comprises an electrical energy storage, EES, module (6, 7), and a resistive current path (8, 9) comprising at least one resistor (10, 11), and at least one EES module voltage regulating circuitry, VRC, (12, 13) connected or connectable to the EES module (6, 7), wherein the at least one EES module VRC (12, 13) is configured such that it conducts current therethrough in a direction towards the at least one resistor (10, 11) when the voltage over the at least one EES module VRC (12, 13) is within a predefined threshold voltage range.
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公开(公告)号：EP4366116A1
公开(公告)日：2024-05-08
申请号：EP22903247.9
申请日：2022-11-28
发明人： QI, Zhengkun , LUO, Bingyin , YOU, Yong
摘要： A battery protection chip, a battery system, and a battery protection method. The battery protection chip (10) comprises: a discharge voltage limiting detection circuit (11) used for detecting a discharge drive signal output by a battery protection chip of a previous level, identifying the level of the discharge drive signal according to the current flow of a discharge detection signal of a battery protection chip of a current level, and reducing a high-low level conversion window voltage of the discharge drive signal; and a charge voltage limiting detection circuit (12) used for detecting a charge drive signal output by the battery protection chip of the previous level, identifying the level of the charge drive signal according to the current flow of a charge detection signal of the battery protection chip of the current level, and reducing a high-low level conversion window voltage of the charge drive signal. The battery protection chip solves the problems of high costs, difficulty in determining the ratio of voltage division by a resistor, and large power consumption during battery protection by existing cascaded battery protection chips.
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公开(公告)号：EP3410593A1
公开(公告)日：2018-12-05
申请号：EP17744326.4
申请日：2017-01-26
CPC分类号： H02M1/4233 , H02M1/088 , H02M1/4258 , H02M3/33553 , H02M3/33576 , H02M3/3376 , H02M7/06 , H02M7/53871 , H02M2001/0009
摘要： This power conversion device includes: a rectification circuit; an inverter circuit having a full-bridge configuration, and having a DC capacitor, and first and second legs each of which has two switching elements connected in series to each other; a transformer; and a control circuit for controlling operation of the inverter circuit, wherein the control circuit controls an ON period for the first leg, thereby controlling increase/decrease in current flowing through a first rectification circuit from an AC input, and controls an ON period for the second leg and a phase shift amount between the ON period for the first leg and the ON period for the second leg, thereby controlling voltage of the DC capacitor to be constant. Thus, it becomes possible to achieve high-power-factor control and output power control at the same time by a single stage of full-bridge inverter circuit.
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公开(公告)号：EP3410133A1
公开(公告)日：2018-12-05
申请号：EP18150285.7
申请日：2018-01-04
申请人： Quanta Computer Inc.
IPC分类号： G01R31/28
CPC分类号： G01R31/40 , G01R31/003 , G01R31/2817 , G01R31/2849 , G01R31/2855 , G05B15/02 , H02M1/088 , H02M2001/0009 , H03K17/6871
摘要： The present disclosure provides a system and method enabling a self-burn-in test for a power supply device (PSD) of a server system using a multi-phase scheme. The PSD comprises a power-width modulation (PWM) controller, and a plurality of power stages. Each of the plurality of power stages comprises a driver, a high-side MOSFET, and a low-side MOSFET. In one aspect of the present disclosure, upon receiving a test mode command from a controller of the server system, the PWM controller can send a PWM signal to switch a specific power stage to the On state, and send at least another PWM signal that switches other power stage(s) of the plurality of power stages to the Tri-state. During a subsequent self-burn-in test of the specific power stage, low-side MOSFET(s) of the other power stage(s) can function as a load for the specific power stage.
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公开(公告)号：EP3388917A2
公开(公告)日：2018-10-17
申请号：EP18164350.3
申请日：2018-03-27
发明人： Sambucco, Adriano , Puia, Emiliano
IPC分类号： G05F1/46
CPC分类号： H02M1/088 , G01R15/14 , G01R19/00 , G05F1/575 , H02M3/02 , H02M2001/0009 , H03K17/0822 , H03K2217/0027
摘要： In some examples, a device includes a power switch, a sensing switch configured to conduct an electrical current based on an electrical current conducted by the power switch. In some examples, the device also includes trimming circuitry configured to generate a monitored electrical current based on an aspect ratio of the trimming circuitry and based on the electrical current conducted by the sensing switch, wherein the aspect ratio of the trimming circuitry is adjustable.
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公开(公告)号：EP3387717A1
公开(公告)日：2018-10-17
申请号：EP16785284.7
申请日：2016-10-04
申请人： Raytheon Company
IPC分类号： H01S3/131
CPC分类号： H01S5/042 , H01S3/0941 , H01S5/06825 , H01S5/4025 , H02M1/088 , H02M1/14 , H02M1/34 , H02M3/10 , H02M3/337 , H02M2001/0054 , H02M2001/0058 , H02M2001/007 , H02M2003/1586 , Y02B70/1425 , Y02B70/1433 , Y02B70/1491
摘要： A high-power laser system includes a plurality of cascaded diode drivers, a pump source, and a laser element. The diode drivers are configured to generate a continuous driver signal. The pump source is configured to generate radiated energy in response to the continuous driver signal. The laser element is disposed downstream from the pump source and is configured to generate a laser beam in response to stimulation via the radiated energy. The high-power laser system further includes an electronic controller configured to output at least one driver signal that operates the plurality of diode drivers at a fixed frequency. The at least one driver signal operates a first cascade diode driver among the plurality of diode drivers 90 degrees out of phase with respect to a second cascade diode driver among the plurality of diode drivers.
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公开(公告)号：EP3365968A2
公开(公告)日：2018-08-29
申请号：EP16840302.0
申请日：2016-08-12
发明人： COLE, Zachary , PASSMORE, Brandon
CPC分类号： H05K5/0065 , H01L23/4093 , H01L23/5382 , H01L25/072 , H01L25/115 , H01L25/162 , H01L29/1608 , H01L29/78 , H01L2224/49111 , H02M1/088 , H02M7/003 , H05K1/0298 , H05K5/0069 , H05K2201/10166
摘要： A power module includes a number of sub-modules connected via removable jumpers. The removable jumpers allow the connections between one or more power semiconductor die in the sub-modules to be reconfigured, such that when the removable jumpers are provided, the power module has a first function and when the removable jumpers are removed, the power module has a second function. The removable jumpers may also allow for independent testing of the sub-modules. The power module may also include a multi-layer printed circuit board (PCB), which is used to connect one or more contacts of the power semiconductor die. The multi-layer PCB reduces stray inductance between the contacts and therefore improves the performance of the power module.
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公开(公告)号：EP3360186A1
公开(公告)日：2018-08-15
申请号：EP16854173.8
申请日：2016-10-04
CPC分类号： H02M7/003 , H02M1/088 , H02M7/537 , H02M7/5387 , H02M2001/0009 , H02P25/092 , H05K7/1432
摘要： A reconfigurable converter includes a power circuit receives a direct current (DC) power signal and provides an alternating current (AC) output signal across at least three phases. The power circuit comprises a plurality of legs, each leg comprising an output node. A coupling device provides a first output configuration and a second output configuration for the plurality of legs. In the first output configuration, the coupling device comprises a coupling portion coupling at least two output nodes to provide a common output terminal. In the second output configuration, the coupling device comprises separate output terminals, each connected to one of the at least two output nodes.
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公开(公告)号：EP3355458A1
公开(公告)日：2018-08-01
申请号：EP18153241.7
申请日：2018-01-24
CPC分类号： G01R31/3275 , H02H3/08 , H02H3/20 , H02H5/04 , H02M1/088 , H02M1/32 , H02M2001/322 , H03K17/102 , H03K2217/0027
摘要： A method for protecting a circuit is provided, wherein the circuit comprises a plurality of switch devices (210) connected in series. The method comprises detecting a failure risk indicator (301) of each switch device (210); determining whether each switch device (210) has a failure risk based on the corresponding failure risk indicator (301); and making each of the switch device(s) (210) having the failure risk in a constant on-state to eliminate the failure risk and prevent a failure of the switch device (210) optionally if a number of the switch device(s) (210) which have or had the failure risk is less than or equal to a preset value.
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公开(公告)号：EP3217535A4
公开(公告)日：2018-07-11
申请号：EP14905435
申请日：2014-11-04
IPC分类号： H02P25/16 , H02K5/18 , H02M1/088 , H02M7/00 , H02M7/5387 , H02M7/5395 , H02P27/08
CPC分类号： H02M7/53875 , H02K5/18 , H02M1/088 , H02M7/003 , H02M7/48 , H02M7/53871 , H02M7/5395 , H02M2001/0009 , H02M2001/008 , H02M2007/53876 , H02P25/16 , H02P27/08
摘要： A motor drive apparatus 100 driving a motor 8 as a three-phase motor converting direct current into three-phase alternating current, includes: inverter modules 5, 6, and 7 equivalent in number to phases of the motor 8; and a control unit 9 generating PWM signals used to drive the inverter modules 5, 6, and 7 with PWM. The inverter modules 5, 6, and 7 each include a plurality of switching element pairs connected in parallel, each of the switching element pairs including two switching elements connected in series.
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