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公开(公告)号：US20240348175A1
公开(公告)日：2024-10-17
申请号：US18396754
申请日：2023-12-27
发明人： Ting-Fu NI
CPC分类号： H02M3/33576 , H02M1/348
摘要： A power conversion circuit, includes the following elements. A transformer, includes a primary side winding, a first secondary side winding and a second secondary side winding. A first switching circuit, connected to the primary side winding. A second switching circuit, connected to the first secondary side winding. A third switching circuit, connected to the second secondary side winding. A first output capacitor, connected to the second switching circuit and the first secondary side winding, and has a first voltage value. The second output capacitor, connected to the third switching circuit and the second secondary side winding, and has a second voltage value. A control circuit, controls the first switching circuit, the second switching circuit and the third switching circuit to be turned-on or turned-off according to the first voltage value and the second voltage value, so as to charge the first output capacitor or the second output capacitor.
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公开(公告)号：US12113435B2
公开(公告)日：2024-10-08
申请号：US17806261
申请日：2022-06-09
CPC分类号： H02M1/342 , H02M3/01 , H02M3/33571 , H02M3/33592
摘要： A power converter-circuit (100) having a transformer (T), comprising a snubber-circuit (Csn, DSn,S3, S3, DSn,S4) for suppressing voltage peaks on a secondary side of the transformer (T) that comprises a snubber capacitor (Csn); and an auxiliary DC-DC converter (101) having a first input connected with the snubber capacitor (Csn) and a first output connected with a first output (VOut) of the power converter-circuit (100). This circuit increases efficiency of electrical conversion and reduces thermal losses.
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公开(公告)号：US12113430B2
公开(公告)日：2024-10-08
申请号：US17804681
申请日：2022-05-31
申请人： Hyundai Motor Company , Kia Corporation , Incheon National University Research and Business Foundation
发明人： Jae Hyuk Choi , Han Shin Youn , Ji Hoon Lim , Dong In Lee
CPC分类号： H02M1/0064 , H02J3/381 , H02M1/0058 , H02M3/1563 , H02S40/36 , H02J2300/26 , H02M1/342
摘要： An embodiment converter includes a magnetic material, a first circuit including a first winding surrounding the magnetic material and a clamp circuit configured to reset a power conversion operation, the first circuit being configured to convert power received from a first input voltage source to provide the converted power to a load, and a second circuit including a second winding surrounding the magnetic material, the second circuit being configured to convert power received from a second input voltage source to provide the converted power to the load and to perform the power conversion operation being reset by the clamp circuit.
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公开(公告)号：US20240305190A1
公开(公告)日：2024-09-12
申请号：US17785039
申请日：2022-06-07
申请人： Power Switching LLC
IPC分类号： H02M1/00 , H02M1/34 , H02M3/158 , H02M7/217 , H02M7/5387
CPC分类号： H02M1/0058 , H02M1/34 , H02M3/158 , H02M7/217 , H02M7/5387
摘要： A ZCVTT switching circuit includes a switch, and a passive block coupled to the switch and configured to damp an input signal from the switch. The switching circuit further includes a recycle positive energy (RPE) block coupled to the passive block and configured to recycle positive energy from a positive spike from the passive block, and a recycle negative energy (RNE) block coupled to the passive block and configured to recycle negative energy from a negative spike from the passive block.
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公开(公告)号：US20240266949A1
公开(公告)日：2024-08-08
申请号：US18565024
申请日：2022-07-25
发明人： Seok Hyeong HAM
摘要： Discussed is converter that may include a first inductor connected to a power source at a first node, a second inductor connected to the first inductor at a second node, a third inductor connected to the first inductor at the first node and the second node, a switch connected in series to the second inductor at a third node, a first diode connected to the second inductor and the switch at the third node, a first capacitor connected to the first inductor and the second inductor at the second node and connected to the first diode at a fourth node, a fourth inductor connected to the first diode and the first capacitor at the fourth node, a second diode connected to the fourth inductor at a fifth node, and a resistor connected to the second diode at a sixth node.
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公开(公告)号：US20240250602A1
公开(公告)日：2024-07-25
申请号：US18596214
申请日：2024-03-05
发明人： Ionel Jitaru
CPC分类号： H02M1/083 , H02M1/4258 , H02M3/155 , H02M3/335 , H02M3/33553 , H02M3/33592 , H01F38/42 , H02M1/0058 , H02M1/342 , Y02B70/10
摘要： A switching power conversion apparatus for converting power from an input voltage source to a load includes first and second switches connected to a switching node. An inductive element has a magnetizing current connected to the node, and the inductive element is connected to deliver energy via the first and second switches from the input voltage to the load during a succession of power conversion cycles. A capacitance connected to the node resonates with the inductive element to cause parasitic oscillation. A clamp subcircuit across the inductive element contains an auxiliary switch to trap energy and prevent parasitic oscillation, wherein the auxiliary switch is complementary to the first switch. A controlled voltage source injects energy in the inductive element, when the auxiliary switch turns off to discharge the parasitic capacitance by using trapped energy in the inductive element in addition to injected energy from the controlled voltage source.
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公开(公告)号：US12034367B2
公开(公告)日：2024-07-09
申请号：US17851015
申请日：2022-06-27
发明人： Chen-Pin Huang , Chia-Chun Li , Chen-Lin Hsu , Hung-Yu Cheng , Wan-Hsuan Yang
CPC分类号： H02M1/44 , H02M1/0009 , H02M1/34 , H02M3/158
摘要： A switching power converter includes: a power stage circuit, including at least one transistor which is configured to operably switch an inductor to convert an input power to an output power; and an active EMI filter circuit, including at least one amplifier, wherein the at least one amplifier is configured to operably sense a noise input signal which is related to a switching noise caused by the switching of the power stage circuit, and amplify the noise input signal to generate a noise canceling signal, wherein the noise canceling signal is injected into an input node of the switching power converter, so as to suppress the switching noise and thus reducing EMI, wherein the input power is provided through the input node to the power stage circuit.
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公开(公告)号：US11973339B2
公开(公告)日：2024-04-30
申请号：US17342838
申请日：2021-06-09
CPC分类号： H02H7/268 , H01H33/596 , H02M1/344
摘要： A T-breaker is an all-in-one solution for dc microgrid fault protection, power flow control, and power quality improvement. A T-breaker features a modular multilevel “T” structure with integrated energy storage devices. The two horizontal arms of the T-breaker realize fault current breaking, load voltage compensation, and power flow control; and the vertical arm of the T-breaker realizes shunt compensation. The configuration provides excellent voltage scalability and relaxes the requirements on the switching signal synchronization during fault transients. The local energy storage in sub-modules eases the fault energy dissipation requirement placed on the traditionally-adopted surge arrestors. The modular multilevel structure also offers immense control flexibility for all types of targeted functions of the provided T-breaker.
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公开(公告)号：US20240055980A1
公开(公告)日：2024-02-15
申请号：US18256536
申请日：2020-12-09
发明人： Yongtao Xie , Pengfei Cai , Mengdie Hu
CPC分类号： H02M1/346 , H02M3/01 , H02M3/33576
摘要： A low loss snubber circuit for protecting an electronic device within a power converter is provided. The low loss snubber circuit includes a bidirectional transient voltage suppression (TVS) diode having first and second nodes, wherein the first node of the bidirectional TVS diode is coupled to a first node of the electronic device, and a snubber capacitor having first and second nodes, wherein the first node is coupled to the second node of the bidirectional TVS diode and the second node is coupled to a second node of the electronic device. The low loss snubber circuit further includes a snubber diode having an anode and a cathode, wherein the anode is coupled to the second node of the bidirectional TVS diode and the cathode is coupled to a node of the power converter.
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公开(公告)号：US20240039448A1
公开(公告)日：2024-02-01
申请号：US18117686
申请日：2023-03-06
发明人： Myung Ho KIM , Young Seul LIM , Sang Cheol SHIN , Kang Ho JEONG
CPC分类号： H02P27/06 , H02M1/348 , H02P29/0241 , H02J7/007 , H02J7/00308 , H02M7/539 , H02M1/0054 , B60L3/003 , B60L53/22
摘要： An electrified vehicle having a first inverter having a DC terminal and a plurality of legs respectively connected to one end of each of a plurality of coils of a motor, a second inverter connected to the DC terminal, and including a plurality of legs connected to the other ends of the plurality of coils, respectively, a plurality of transfer switches respectively having one end connected to a neutral terminal for the plurality of coils and the other end connected to the other end of each coil, an overvoltage protection circuit including a clamping switch, a resistor, and a capacitor, and connected to the neutral terminal and the DC terminal, and a controller controlling a turned-on state of the plurality of transfer switches according to the motor driving mode. When the motor is driven, the controller controls a turned-on state of the clamping switch.
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