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公开(公告)号：US12119736B2
公开(公告)日：2024-10-15
申请号：US17821454
申请日：2022-08-22
IPC分类号： H02M1/00 , H01M8/04537 , H01M8/04858
CPC分类号： H02M1/0009 , H01M8/04552 , H01M8/04873 , H02M1/0043
摘要： A power supply unit includes a power supply and a converter. The converter performs operation selected from the group consisting of boosting and stepping down of an output voltage of the power supply; and includes a reactor in which n-phase coils are magnetically coupled to each other, n-phase switches, and a control unit. The control unit controls duty cycles of the n-phase switches; monitors a current value flowing through the n-phase coils; and performs phase switching control when the control unit determines that an operation condition described below is satisfied, the phase switching control being control in which the control unit performs phase switching from in phase to out of phase in the case where the n-phase switches are being driven in phase and performs phase switching from out of phase to in phase in the case where the n-phase switches are being driven out of phase.
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公开(公告)号：US20240266972A1
公开(公告)日：2024-08-08
申请号：US18640731
申请日：2024-04-19
CPC分类号： H02M7/4833 , H02M1/0043 , H02M7/493 , H02M3/33584
摘要： A power conversion system includes a first direct current to alternating current (DC-AC) inverter, a second DC-AC inverter, an inverter controller, a direct current (DC)-link circuit connecting the first DC-AC inverter and the second DC-AC inverter, a neutral-point balancer (NPB), an NPB circuit, and an NPB controller. The inverter controller is configured to provide a pulse-width modulation (PWM), signal to the first DC-AC inverter and the second DC-AC inverter. The NPB circuit is configured to reduce low frequency current oscillations in the DC-link circuit by switching between a first state for transferring charge from a positive voltage line to a neutral voltage line, and a second state for transferring charge from the neutral voltage line to a negative voltage line. The NPB controller is configured to control the switching of the NPB circuit and is synchronized with the PWM signal from the inverter controller.
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3.发明公开公开(公告)号：US20240235270A1
公开(公告)日：2024-07-11
申请号：US18591648
申请日：2024-02-29
发明人： Jinhai Jiang , Lianbin Cheng , Xingjian Zhou , Kai Song , Chunbo Zhu , Zhixian Wu , Shuyang Wang
IPC分类号： H02J50/12 , B60L53/122 , H02M1/00
CPC分类号： H02J50/12 , H02M1/0043 , B60L53/122 , B60L2210/30
摘要： A transmitter end includes a transmitter coil. The transmitter end further includes a transmitter end control system and N energy management modules, where N is an integer greater than 1. Input ends of the N energy management modules are electrically connected to a power grid, and output ends of the N energy management modules are electrically connected to the transmitter coil. Each energy management module includes an AC-DC circuit, an inverter circuit, and a transformer. The transmitter end control system is electrically connected to the inverter circuits in the N energy management modules, and is configured to output synchronous phase shift control signals with a fixed duty cycle, to drive the inverter circuits to work synchronously. The energy management module may be used in the transmitter end, and form a smallest module.
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公开(公告)号：US12027865B2
公开(公告)日：2024-07-02
申请号：US18099531
申请日：2023-01-20
发明人： Jae Hyun Kim , Dong Gyun Woo
CPC分类号： H02J3/322 , B60L55/00 , H02J3/16 , H02J7/02 , H02M1/0009 , H02M1/0043 , H02M3/33584 , B60L2210/10 , H02J2207/20
摘要： A battery charging apparatus includes a bi-directional charger including a first switching circuit connected to an AC terminal, a second switching circuit connected to a battery, and a transformer connected between the first switching circuit and the second switching circuit. The battery charging apparatus also includes a controller configured to switch a leg included in the first switching circuit based on a first carrier wave and a first duty command, configured to switch a leg included in the second switching circuit based on a second carrier wave and a second duty command, configured to adjust a phase of the second carrier wave compared to a phase of the first carrier wave by a phase shift angle according to an active power command, and configured to adjust a phase of the second duty command according to the reactive power command.
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公开(公告)号：US20240178741A1
公开(公告)日：2024-05-30
申请号：US18072065
申请日：2022-11-30
发明人： Manuel Escudero Rodriguez , Matteo-Alessandro Kutschak , Alessandro Pevere , David Meneses Herrera
CPC分类号： H02M1/007 , H02M1/0009 , H02M1/0043 , H02M1/4233 , H02M3/01
摘要： A power converter includes: a solid-state transformer having a DC input and isolated DC outputs; a half bridge converter stage for each isolated DC output of the solid-state transformer, wherein an input of each half bridge converter stage is connected to the corresponding isolated DC output and an output of the half bridge converter stages are electrically connected in a cascade configuration; an output inductor shared by the half bridge converter stages and configured to deliver an output current; and a controller configured to implement phase shift control of the half bridge converter stages relative to one another, based on the number of half bridge converter stages and an output voltage of the power converter being regulated, such that each half bridge converter stage processes the full output current but only a fraction of the output voltage. Methods of controlling the power converter are also described.
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公开(公告)号：US20240146204A1
公开(公告)日：2024-05-02
申请号：US18279065
申请日：2021-08-02
发明人： Yunjie MO , Yongchun YANG , Biaojie QI , Yuhao LUO
CPC分类号： H02M3/33592 , H02M1/0043 , H02M1/0058 , H02M1/083 , H02M3/01
摘要： A phase-shifted full-bridge converter, and a method and a device for controlling the phase-shifted full-bridge converter are provided. The method includes: acquiring a current currently inputted to the phase-shifted full-bridge converter; determining, based on a correspondence between inputted currents and operation modes, an operation mode corresponding to the current currently inputted to the phase-shifted full-bridge converter; and acquiring, from maximum power point tracking in the determined operation mode, a phase angle for the phase-shifted full-bridge converter and a switching frequency of a switch transistor in the phase-shifted full-bridge converter, to control the switch transistor to operate based on the phase angle and the switching frequency.
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公开(公告)号：US11942875B2
公开(公告)日：2024-03-26
申请号：US17306245
申请日：2021-05-03
申请人： DENSO CORPORATION
CPC分类号： H02M7/5387 , H02M1/08 , H02M7/493 , H02M7/53871 , H02P27/08 , H02P29/68 , H02M1/0043
摘要： A drive system for a rotating electric machine system includes: a first inverter and a second inverter connected to first and second ends of multi-phase windings respectively; a selection unit performing selection between a first setting representing that the first inverter is set to a switch drive inverter and the second inverter is set to a neutral-point drive inverter and a second setting representing that the second inverter is set to the switch drive inverter and the first inverter is set to the neutral-point drive inverter; and a drive control unit performing a switch drive task of performing on-off driving of the upper and lower arm switches of the switch drive inverter to thereby input/output power to/from the rotating electrical machine; and a neutral-point drive task of maintaining at least one of the upper and lower arm switches of the neural-point drive inverter in an on state.
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公开(公告)号：US11929671B2
公开(公告)日：2024-03-12
申请号：US17646944
申请日：2022-01-04
发明人： Roman Mazgut
CPC分类号： H02M3/01 , H02M1/0019 , H02M1/0043 , H02M3/33571
摘要： Methods for operating an interleaved resonant power converter, and systems and apparatuses for power conversion. The method includes generating a first pair of complementary signals to drive a first stage of the interleaved resonant power converter. The method also includes generating a second pair of complementary signals to drive a second stage of the interleaved resonant power converter. The method further includes generating a current-mode control signal based on a current sense signal of the first stage. The method also includes adjusting a switching frequency of the first pair of complementary signals based on the current-mode control signal. The method further includes adjusting a switching frequency of the second pair of complementary signals to match the switching frequency of the first pair of complementary signals.
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公开(公告)号：US20240079963A9
公开(公告)日：2024-03-07
申请号：US17812360
申请日：2022-07-13
CPC分类号： H02M3/33584 , H02M1/0064 , H02M1/40 , H02M1/0043 , H02M3/01
摘要： The present disclosure provides an isolated multi-phase DC/DC converter with a reduced quantity of blocking capacitors. In one aspect, the converter includes a multi-phase transformer having a primary circuit and a secondary circuit magnetically coupled to the primary circuit, the primary circuit having a first quantity of terminals, and the secondary circuit having a second quantity of terminals; a third quantity of blocking capacitors, each being electrically connected in series to a respective one of the terminals of the primary circuit; and a fourth quantity of blocking capacitors, each being electrically connected in series to a respective one of the terminals of the secondary circuit. The third quantity is one less than the first quantity. The fourth quantity is one less than the second quantity.
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公开(公告)号：US11909307B2
公开(公告)日：2024-02-20
申请号：US17615850
申请日：2019-06-12
CPC分类号： H02M1/325 , H02M1/0043 , H02M7/217
摘要： A power conversion device includes a power converter including a plurality of arms and a control device to control voltages of a plurality of sub modules by PWM control using a carrier signal for each sub module. The sub module includes a plurality of switching elements, a power storage element, a pair of output terminals, and a bypass switch. When the control device detects failure of a sub module in an arm, it performs stop processing for stopping a switching operation of the plurality of switching elements included in at least one sub module of the plurality of sub modules in the arm and has the sub module failure of which was detected bypassed. After the control device performs the stop processing, it equalizes intervals among phases of carrier signals of a plurality of normal sub modules in the arm caused by failure of the sub module.
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