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.

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.

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.