Open AccessPredictive variable‐structure system control of unity power factor rectifiers
Author(s) -
Korelič Jože,
Jezernik Karel
Publication year - 2013
Publication title -
iet power electronics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.637
H-Index - 77
eISSN - 1755-4543
pISSN - 1755-4535
DOI - 10.1049/iet-pel.2012.0277
Subject(s) - power factor , variable (mathematics) , control theory (sociology) , power (physics) , model predictive control , control (management) , computer science , mathematics , artificial intelligence , physics , mathematical analysis , quantum mechanics
This study presents the design of a current control loop and the selection of switching logic for pulse‐width modulation (PWM) of three‐phase switching converters. This approach is based on a deliberate introduction of the predictive sliding mode motion within a control system. It shows that the selection of the PWM pattern is a direct result of sliding mode existence within the current control closed‐loop system. The design specifications are robustness to load electrical parameters, fast dynamic response, reduced switching frequency and simple hardware implementation. To meet previous specifications, a sliding mode controller has been developed, designed as a finite state machine, and implemented within a field programmable gate array device. The switching strategy implemented within the state transition diagram provides for a minimum number of switch state changes by the three‐phase converter that is confirmed through simulation and experimental results.