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公开(公告)号：US20220069719A1
公开(公告)日：2022-03-03
申请号：US17008893
申请日：2020-09-01
Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
Inventor： Yuliang Cao , Minh Ngo , Ning Yan , Dong Dong , Rolando Burgos
IPC: H02M3/335 , H02M7/5387
Abstract: Aspects of bidirectional architectures with partial energy processing in resonant direct current (DC)-to-DC converters are described. In one embodiment, an alternating circuit (AC)-to-DC circuit generates an AC voltage from a DC voltage. A voltage of the AC voltage is transformed into a majority AC voltage of a majority power path and at least one minority AC voltage of the minority power paths. The majority AC voltage is rectified into a majority DC voltage and a minority AC voltage is rectified into a minority DC voltage. The majority power path and the minority power path are combined as a combined DC voltage.
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公开(公告)号：US11307266B2
公开(公告)日：2022-04-19
申请号：US17006058
申请日：2020-08-28
Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
Inventor： Yuliang Cao , Minh Ngo , Dong Dong , Rolando Burgos
Abstract: Various examples of a high frequency, inductor and transformer core loss characterization and measurement method and system for arbitrary waveforms are disclosed herein. A system and method for determining core loss of a magnetic core can include generating a waveform to excite a first test circuit which comprises an excitation circuit, a circuit under test (CUT) comprising the magnetic core, and an inductance circuit having an inductor connected in parallel to the CUT. The method includes measuring a first current, when the first test circuit is excited. The method includes disconnecting the CUT from the first test circuit to form a second test circuit. The method includes generating the waveform to excite the second test circuit, and measuring a second current, when the second test circuit is excited. The power loss for the magnetic core is calculated based on an input voltage and the first and second measured current.
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公开(公告)号：US11290022B2
公开(公告)日：2022-03-29
申请号：US17008893
申请日：2020-09-01
Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
Inventor： Yuliang Cao , Minh Ngo , Ning Yan , Dong Dong , Rolando Burgos
IPC: H02M3/335 , H02M7/5387 , H02M1/00
Abstract: Aspects of bidirectional architectures with partial energy processing in resonant direct current (DC)-to-DC converters are described. In one embodiment, an alternating circuit (AC)-to-DC circuit generates an AC voltage from a DC voltage. A voltage of the AC voltage is transformed into a majority AC voltage of a majority power path and at least one minority AC voltage of the minority power paths. The majority AC voltage is rectified into a majority DC voltage and a minority AC voltage is rectified into a minority DC voltage. The majority power path and the minority power path are combined as a combined DC voltage.
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公开(公告)号：US20220065950A1
公开(公告)日：2022-03-03
申请号：US17006058
申请日：2020-08-28
Applicant: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.
Inventor： Yuliang Cao , Minh Ngo , Dong Dong , Rolando Burgos
Abstract: Various examples of a high frequency, inductor and transformer core loss characterization and measurement method and system for arbitrary waveforms are disclosed herein. A system and method for determining core loss of a magnetic core can include generating a waveform to excite a first test circuit which comprises an excitation circuit, a circuit under test (CUT) comprising the magnetic core, and an inductance circuit having an inductor connected in parallel to the CUT. The method includes measuring a first current, when the first test circuit is excited. The method includes disconnecting the CUT from the first test circuit to form a second test circuit. The method includes generating the waveform to excite the second test circuit, and measuring a second current, when the second test circuit is excited. The power loss for the magnetic core is calculated based on an input voltage and the first and second measured current.
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