Unlock instant, AI-driven research and patent intelligence for your innovation.

Fault-tolerant electric drive

A technology of electric drive system and drive circuit, applied in motor control, AC motor control, power distribution, etc.

Inactive Publication Date: 2021-01-19
ROLLS ROYCE PLC
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some strategies have been established; however, these usually involve simple duplexing of the system

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Fault-tolerant electric drive
  • Fault-tolerant electric drive
  • Fault-tolerant electric drive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0053] see figure 1 , an exemplary fault-tolerant drive system 100 includes a rotating electrical machine 101 , such as an electric motor or generator, connected to a drive circuit module 102 . The electric machine 101 comprises six phases A, B, C, U, V, W arranged in a sun configuration, ie the phases have a common connection point 109 . In other examples, system 100 may have fewer or more than six phases. In general, the phase number can be expressed as pn, where n is an integer greater than or equal to one, and p is a prime number. Increasing the value of n allows the electric machine 101 to exhibit reduced torque derating under fault conditions, but at the cost of increased complexity. So there is usually a tradeoff.

[0054] The drive circuit module 102 comprises six (i.e. pn, where n=2 and p=3) phase drive circuits 103a-c, 103u-w, each of which is connectable to the corresponding phase. An additional backup drive circuit 103x is provided to enable operation of the e...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a fault-tolerant electric drive system and method for maintaining electrical balance or continuing operation of a rotary electric machine under fault conditions. One such system100 comprises: a rotating electrical machine 101 comprising a pn phase having a common connection point, where p is a prime number and n is an integer greater than or equal to 1; the driving circuitmodule 102 is provided with a pn phase driving circuit 103a-c, 103u-w and a standby driving circuit 103x; and a contactor module 104. The contactor module 104 comprises: pn phase contactors 105a-c, 105u-w, each of the pn phase contactors operable to connect one of the pn phases of the rotating electrical machine 101 to a respective one of the pn phase drive circuits 103a-c, 103u-w; and a phase fault contactor 106x operable to connect the backup drive circuit 103x to the common connection point X. The phase fault contactor 106x is operable to connect the backup drive circuit 103x to the commonconnection point X.

Description

technical field [0001] The present disclosure relates to fault tolerant electric drive systems and methods for maintaining electrical balance or continuing operation of rotating electric machines under fault conditions. Background technique [0002] Fault tolerance needs to be provided in some applications of electric drive systems. Some strategies have been established; however, these usually involve simple duplexing of the system. Therefore, it is desirable to provide an improved fault tolerant electric drive system. Contents of the invention [0003] According to a first aspect, a fault-tolerant electric drive system is provided, the fault-tolerant electric drive system comprising: [0004] a rotating electrical machine comprising pn phases having a common connection point, where p is a prime number and n is an integer greater than or equal to 1; [0005] A drive circuit module having a pn phase drive circuit and a backup drive circuit; and [0006] A contactor modu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H02P29/024H02P29/028H02P25/16
CPCH02P25/16H02P29/028H02P29/0243H02P2209/01H02M1/32B64D2221/00H02H7/0805H02H7/0833H02P9/02H02P25/22
Inventor 弗拉基米尔·V·希罗科夫
Owner ROLLS ROYCE PLC