CCM Flyback converter using an observer-based digital controller

A scheme is presented to integrate a primary-side-sensing technique into a model-predictive-controller for a Flyback converter. The circuit consists of a signal processor, an observer, and a model-predictive controller. Besides inheriting the advantages of model-predictive-control, e.g. optimal tradeoff between overshoot and fast stabilization, and constraints handling, the proposed controller allows for hardware saving by applying primary-side-sensing.

[1]  Marian P. Kazmierkowski,et al.  “Predictive control in power electronics and drives” , 2008, 2008 IEEE International Symposium on Industrial Electronics.

[2]  Johann W. Kolar,et al.  Predictive Control of an Indirect Matrix Converter , 2008, IEEE Transactions on Industrial Electronics.

[3]  Julia H. Buckland,et al.  Reduced order reference governor , 2012, 2012 IEEE 51st IEEE Conference on Decision and Control (CDC).

[4]  Ralph Kennel,et al.  Predictive control in power electronics and drives , 2008, 2008 IEEE International Symposium on Industrial Electronics.

[5]  R. Vaccaro.  Digital control : a state-space approach , 1995 .

[6]  B. Francis,et al.  Stability Theory for Linear Time-Invariant Plants with Periodic Digital Controllers , 1988 .

[7]  Leopoldo García Franquelo,et al.  Model Predictive Control of an Inverter With Output $LC$ Filter for UPS Applications , 2009, IEEE Transactions on Industrial Electronics.

[8]  Ying-Yu Tzou,et al.  Digital primary-side sensing control for flyback converters , 2009, 2009 International Conference on Power Electronics and Drive Systems (PEDS).

[9]  Mircea Lazar,et al.  FPGA implementation of optimal and approximate model predictive control for a buck-boost DC-DC converter , 2012, 2012 IEEE International Conference on Control Applications.

[10]  George C. Verghese,et al.  Modeling and simulation of power electronic converters , 2001, Proc. IEEE.

[11]  Xiaogao Xie,et al.  A Novel Output Current Estimation and Regulation Circuit for Primary Side Controlled High Power Factor Single-Stage Flyback LED Driver , 2012, IEEE Transactions on Power Electronics.

[12]  E. Mosca,et al.  Nonlinear control of constrained linear systems via predictive reference management , 1997, IEEE Trans. Autom. Control..

[13]  Veaceslav Spinu,et al.  Constrained control of power converters , 2014 .

[14]  J. M. Schellekens,et al.  On real-time optimal control of high-precision switching amplifiers , 2013, 2013 17th International Conference on System Theory, Control and Computing (ICSTCC).