Switched systems are embedded devices widespread in industrial
applications such as power electronics and automotive control. They
consist of continuous-time dynamical subsystems and a rule that
controls the switchING between them. Under a suitable control rule, the
system can improve its steady-state performance and meet essential
properties, such as safety and stability, in desirable operating zones.
This book is about the systematic application of the switchING function technique for
theanalysisofpowerelectroniccircuits. TheswitchINGfunctionmethodofanalysisis
basedonthederivationofthevoltage–currentexpressionsofaswitchedcircuitcover-
ing all modes into a single expression, a ‘unified expression’. A ‘unified expression’
istheresultofapplyingthesuperpositiontheoreminordertocombinetheexpressions
of all modes of the circuit into one expression with time varying parameters.