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1.发明申请公开(公告)号：US20190140557A1
公开(公告)日：2019-05-09
申请号：US15806352
申请日：2017-11-08
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Di Zhang , Jiangbiao He , Sachin Madhusoodhanan , Di Pan
IPC: H02M7/5395
Abstract: A method for operating a phase-leg of a three-level active neutral point clamped (3L-ANPC) converter is presented. The phase-leg includes an output terminal, a plurality of input terminals, and a plurality of switches disposed therebetween. The method includes operating the phase-leg in a neutral state to generate an output voltage having a neutral level. The method further includes transitioning the phase-leg to a first intermediate neutral state from the neutral state. Moreover, the method includes transitioning the phase-leg from the first intermediate neutral state to a first state to generate the output voltage having a first level. A modulator for operating the phase-leg of the 3L-ANPC converter is also presented. Moreover, a 3L-ANPC converter including the modulator is presented.
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公开(公告)号：US20190385785A1
公开(公告)日：2019-12-19
申请号：US16007844
申请日：2018-06-13
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Cong Li , Anoop Jassal , Naveenan Thiagarajan , Satish Prabhakaran , Kum-Kang Huh , Jiangbiao He , Xiaosong Kang , Ruxi Wang
Abstract: A magnetic unit is presented. The magnetic unit includes a magnetic core. The magnetic core includes a first limb and a second limb disposed proximate to the first limb, where a gap is formed between the first limb and the second limb. The magnetic unit further includes a first winding wound on the first limb. Moreover, the magnetic unit includes a conductive element disposed facing an outer periphery of the first winding, where the conductive element is configured to control a fringing flux generated at the gap. Further, the magnetic unit includes a heat sink operatively coupled to the conductive element, where the conductive element is further configured to transfer heat from at least one of the conductive element and the first winding to the heat sink. Moreover, a high frequency power conversion system and a method of operation of the magnetic unit is also presented.
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公开(公告)号：US09979322B2
公开(公告)日：2018-05-22
申请号：US15192023
申请日：2016-06-24
Applicant: General Electric Company
Inventor： Di Zhang , Rui Zhou , Luis Garces , Jiangbiao He
IPC: H02M7/5395 , H02M1/00 , H02M7/487
CPC classification number: H02M7/5395 , H02M7/487 , H02M2001/0048 , H02M2001/0054
Abstract: The present disclosure is directed to a system and method for modulating a voltage output of a hybrid converter system having first and second set of Si-based power electronic devices coupled to first and second voltage source, respectively, and a first set of SiC-based power electronic devices coupled to the first and second sets of Si-based power electronic devices. The method includes switching between operational states of the hybrid converter system based on a desired voltage output, wherein each operational state includes one of the Si-based power electronic devices from the first and second sets of Si-based power electronic devices and one of the SiC-based devices from the first set of SiC-based power electronic devices being switched on and the remaining power electronic devices being switched off. Each SiC-based power electronic device of the first set of SiC-based power electronic devices switches at a higher frequency as compared to each Si-based power electronic device of the first and second sets of the Si-based power electronic devices.
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公开(公告)号：US10658941B2
公开(公告)日：2020-05-19
申请号：US15955064
申请日：2018-04-17
Applicant: General Electric Company
Inventor： Mark Dame , Jiangbiao He , Di Zhang
Abstract: In an embodiment, a three-level active neutral-point clamped (ANPC) converter system is provided. The system includes first and second Direct Current (DC)-bus structures that include at least one of a number of DC-bus capacitors on printed circuit boards (PCBs). The PCBs are laminated together with an air gap (e.g., one or more millimeters) in between for a thermal dissipation and an insulation creepage. The three DC-bus terminals include PCBs, and are electrically connected to the three-level power converter, which are typically mounted on a heatsink or a cold plate.
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Patent Agency Ranking
5.发明授权公开(公告)号：US10291150B1
公开(公告)日：2019-05-14
申请号：US15806352
申请日：2017-11-08
Applicant: GENERAL ELECTRIC COMPANY
Inventor： Di Zhang , Jiangbiao He , Sachin Madhusoodhanan , Di Pan
IPC: H02M7/5395 , H02M7/487
Abstract: A method for operating a phase-leg of a three-level active neutral point clamped (3L-ANPC) converter is presented. The phase-leg includes an output terminal, a plurality of input terminals, and a plurality of switches disposed therebetween. The method includes operating the phase-leg in a neutral state to generate an output voltage having a neutral level. The method further includes transitioning the phase-leg to a first intermediate neutral state from the neutral state. Moreover, the method includes transitioning the phase-leg from the first intermediate neutral state to a first state to generate the output voltage having a first level. A modulator for operating the phase-leg of the 3L-ANPC converter is also presented. Moreover, a 3L-ANPC converter including the modulator is presented.
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公开(公告)号：US20190319543A1
公开(公告)日：2019-10-17
申请号：US15955064
申请日：2018-04-17
Applicant: General Electric Company
Inventor： Mark Dame , Jiangbiao He , Di Zhang
Abstract: In an embodiment, a three-level active neutral-point clamped (ANPC) converter system is provided. The system includes first and second Direct Current (DC)-bus structures that include at least one of a number of DC-bus capacitors on printed circuit boards (PCBs). The PCBs are laminated together with an air gap (e.g., one or more millimeters) in between for a thermal dissipation and an insulation creepage. The three DC-bus terminals include PCBs, and are electrically connected to the three-level power converter, which are typically mounted on a heatsink or a cold plate.
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公开(公告)号：US10581342B2
公开(公告)日：2020-03-03
申请号：US15993945
申请日：2018-05-31
Applicant: General Electric Company
Inventor： Di Zhang , Jiangbiao He , Sachin Madhusoodhanan
IPC: H02M7/487 , H02M1/34 , H02M7/5395 , H02M1/00 , H01L29/16
Abstract: A system includes a voltage converter and a controller for controlling the operation of the voltage converter. The voltage converter includes a plurality of legs, wherein each leg includes a first and a second set of silicon (Si)-based power devices. The first set of Si-based power devices includes a first and second Si-based power devices connected to each other at a first interconnection node and the second set of Si-based power devices includes a third and fourth Si-based power devices connected to each other at a second interconnection node. The first and second set of Si-based power devices are coupled across a first and second DC voltage sources respectively. A first set of Silicon-Carbide (SiC) based power devices is coupled across the first and second interconnection nodes. The system also includes a snubber capacitor connected across the first and the second interconnection nodes.
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公开(公告)号：US10547251B1
公开(公告)日：2020-01-28
申请号：US16192668
申请日：2018-11-15
Applicant: General Electric Company
Inventor： Di Pan , Mark Edward Dame , Di Zhang , Jiangbiao He
Abstract: A method for shutting down a phase-leg of a three-level active neutral point clamped converter is provided. The method includes the following steps. A determining step determines if a switch fault has occurred, and if a switch fault has occurred then each switch of the plurality of switches are turned off. If a switch fault has not occurred and a shutdown is requested, then an operating step operates the plurality of switches to turn off a first switch and a fourth switch. A waiting step waits for a first predetermined time period. An operating step operates the plurality of switches to turn on a second switch and a third switch. A waiting step is repeated. An operating step operates the plurality of switches to turn off a fifth switch and a sixth switch. A waiting step is repeated. An operating step turns off the second switch and the third switch.
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公开(公告)号：US20170373586A1
公开(公告)日：2017-12-28
申请号：US15192023
申请日：2016-06-24
Applicant: General Electric Company
Inventor： Di Zhang , Rui Zhou , Luis Garces , Jiangbiao He
CPC classification number: H02M7/5395 , H02M7/487 , H02M2001/0048 , H02M2001/0054
Abstract: The present disclosure is directed to a system and method for modulating a voltage output of a hybrid converter system having first and second set of Si-based power electronic devices coupled to first and second voltage source, respectively, and a first set of SiC-based power electronic devices coupled to the first and second sets of Si-based power electronic devices. The method includes switching between operational states of the hybrid converter system based on a desired voltage output, wherein each operational state includes one of the Si-based power electronic devices from the first and second sets of Si-based power electronic devices and one of the SiC-based devices from the first set of SiC-based power electronic devices being switched on and the remaining power electronic devices being switched off. Each SiC-based power electronic device of the first set of SiC-based power electronic devices switches at a higher frequency as compared to each Si-based power electronic device of the first and second sets of the Si-based power electronic devices.
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