Fault tolerance of a multiprocessor-structured control system by reconfiguration, application to the control of electrical power converters

A novel type of redundancy, pseudo-redundancy, for multiprocessor-structured control system of electrical power converters is presented. Pseudo-redundancy can be used to reduce the number of components required by classical redundancies if operating security is necessary. Some problems in using pseudo-redundancy are presented, including: choice of the downgraded programs from the beginning of the design of control systems; fault detection by microdiagnoses and validation of exchanged information; calculation of initializing values of the downgraded programs; and the reconfiguration device