Frequency response improvement of DSP controlled DC-DC converter with pole-zero cancellation technique

Reentry, the performance of the DSP and FPGA is developed remarkably. So, fully digital control is enabled in switch mode power supplies. However, in many cases, the control system is built by very complicatedly and very difficult theories such as the adaptive control. Furthermore, in most popular PID control, its design method of the parameters is not clear, so derivation of the optimal parameters is very difficult. This paper proposes revolutionary control technique which is cancelled the transfer function of the converter by using pole-zero-cancellation method. This technique is very simple and easy to stability design.

[1]  K. Rinne,et al.  Control of dc-dc converters by direct pole placement and adaptive feedforward gain adjustment , 2005, Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005. APEC 2005..

[2]  O. Ichinokura,et al.  Digital PI controller for high frequency switching DC/DC converters based on FPGA , 2003, The 25th International Telecommunications Energy Conference, 2003. INTELEC '03..

[3]  Jianping Xu,et al.  Nonlinear PID in Digital Controlled Buck Converters , 2007, APEC 07 - Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition.

[4]  P.T. Krein,et al.  Digital Control Generations -- Digital Controls for Power Electronics through the Third Generation , 2007, 2007 7th International Conference on Power Electronics and Drive Systems.

[5]  K. Rinne,et al.  A self-compensating adaptive digital regulator for switching converters based on linear prediction , 2006, Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06..

[6]  John Y. Hung,et al.  Digital controller design for buck and boost converters using root locus techniques , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[7]  Slobodan Cuk,et al.  A general unified approach to modelling switching-converter power stages , 1977 .

[8]  T. Ninomiya,et al.  A unified analysis of resonant converters , 1991 .

[9]  Yangyang Wen,et al.  Adaptive nonlinear compensation for asymmetrical half bridge DC-DC converters , 2006, Twenty-First Annual IEEE Applied Power Electronics Conference and Exposition, 2006. APEC '06..