公开(公告)号：US20170366082A1

公开(公告)日：2017-12-21

申请号：US15601050

申请日：2017-05-22

Applicant: ROLLS-ROYCE plc

Inventor： Xiong LIU ,  Michael A. ZAGRODNIK ,  Amit K. GUPTA

IPC: H02M1/42 ,  H02M7/84 ,  H02P7/03 ,  H02M7/66

CPC classification number: H02M1/4233 ,  H02M1/4216 ,  H02M5/4585 ,  H02M7/49 ,  H02M7/66 ,  H02M7/84 ,  H02M2001/4283 ,  H02P7/04 ,  Y02B70/126

Abstract: An electrical system including a three phase AC input supply and three or more H-bridge converter cells. Each H-bridge converter cell has: an active front end rectifier for receiving the three phase AC input supply and transforming it into a DC supply, thereby providing a rectifier current ii; a capacitor suitable to receive a capacitor current iC, the capacitor smoothing the DC supply; and an inverter suitable to receive an inverter current io, wherein io=ii−iC, said inverter transforming the received inverter current io into a single phase AC supply. The system also including a control subsystem, which provides a signal to each active front end rectifier to vary its respective rectifier current ii such that the difference between the rectifier current ii, provided by the active front end rectifier, and the inverter current io, received by the inverter, is substantially zero.

公开(公告)号：US10038367B2

公开(公告)日：2018-07-31

申请号：US15601050

申请日：2017-05-22

Applicant: ROLLS-ROYCE plc

Inventor： Xiong Liu ,  Michael A. Zagrodnik ,  Amit K. Gupta

IPC: H02M1/42 ,  H02M7/04 ,  H02P7/03 ,  H02M7/66 ,  H02M7/84 ,  H02M5/458 ,  H02M7/49

CPC classification number: H02M1/4233 ,  H02M1/4216 ,  H02M5/4585 ,  H02M7/49 ,  H02M7/66 ,  H02M7/84 ,  H02M2001/4283 ,  H02P7/04 ,  Y02B70/126

Abstract: An electrical system including a three phase AC input supply and three or more H-bridge converter cells. Each H-bridge converter cell has: an active front end rectifier for receiving the three phase AC input supply and transforming it into a DC supply, thereby providing a rectifier current ii; a capacitor suitable to receive a capacitor current iC, the capacitor smoothing the DC supply; and an inverter suitable to receive an inverter current io, wherein io=ii−iC, said inverter transforming the received inverter current io into a single phase AC supply. The system also including a control subsystem, which provides a signal to each active front end rectifier to vary its respective rectifier current ii such that the difference between the rectifier current ii, provided by the active front end rectifier, and the inverter current io, received by the inverter, is substantially zero.