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：US20240297393A1

公开(公告)日：2024-09-05

申请号：US18589542

申请日：2024-02-28

Applicant: ROLLS-ROYCE Plc.

Inventor： Anand Prabhu MATHIVANAN ,  Pei Sin NG ,  Mohankumar PALANISAMY ,  Michael A. ZAGRODNIK ,  Yang Yueng Melvin YAP ,  Amit K. GUPTA

IPC: H01M50/291 ,  H01M10/613 ,  H01M10/6567 ,  H01M50/213

CPC classification number: H01M50/291 ,  H01M10/613 ,  H01M10/6567 ,  H01M50/213

Abstract: A battery cooling block, including: a housing defining a flow chamber and including a first and second port configured to allow flow of coolant through flow chamber along a first axis; the housing further including a plurality of compartments disposed in the flow chamber, each compartment extending along a respective compartment axis perpendicular to first axis and each compartment configured to receive respective cylindrical battery cell; wherein each compartment is defined by partially open compartment wall within flow chamber, compartment wall including a plurality of wall segments extending parallel to compartment axis and which are circumferentially spaced apart around compartment axis wherein respective battery cell is partially exposed to flow of coolant. A battery assembly, including: plurality of cylindrical battery cells; and battery cooling block as described above. Each of the plurality of cylindrical battery cells is received in respective one of the plurality of compartments of battery cooling block.

公开(公告)号：US20200014199A1

公开(公告)日：2020-01-09

申请号：US16451455

申请日：2019-06-25

Applicant: ROLLS-ROYCE plc

Inventor： Chandana J. GAJANAYAKE ,  Pradip CHATTERJEE ,  Michael A. ZAGRODNIK

IPC: H02H9/02

Abstract: There is described a device for controlling an amount of current within a power distribution network by manipulating the amount of magnetic flux in the device and thus the impedance experienced by the power distribution network across the device. This is achieved by winding a plurality of coils about a magnetically permeable core and by providing the device with a magnetically permeable bridge element that is movable between a fully-open position at which the net magnetic flux generated in the core by alternating currents in each coil is zero, and a fully-closed position at which a net magnetic flux is present in the core.