Self-tuned projected cross point control for power electronic converters is introduced. Projected cross point control (PCPC) combines the advantages of both analog and digital current-mode control techniques. Despite several advantages, accuracy of the PCPC method depends on the power stage inductor value. However, ferromagnetic characteristics of the inductor core material make the inductor measurement inaccurate. Furthermore, the inductor value is subject to change due to temperature variations or other environmental effects. To overcome the dependence of the PCPC method on the inductor value, self- tuned PCPC approach is introduced in this paper. Unlike the conventional PCPC scheme, self-tuned PCPC method has excellent robustness against the variations of the inductor value. Hence, the average inductor current accurately follows its reference regardless of aging and temperature effects on the power stage inductor. Furthermore, the addition of the self-tuning mechanism does not interfere with the dynamic performance of the conventional PCPC method. Analytical analysis and simulation results show the superior accuracy and transient response of the self-tuned projected cross point control technique.
K. Wan and M. Ferdowsi, "Self-tuned Projected Cross Point -- An Improved Current-Mode Control Technique," Proceedings of the IEEE Power Electronics Specialists Conference, 2008, Institute of Electrical and Electronics Engineers (IEEE), Jul 2008.
The definitive version is available at http://dx.doi.org/10.1109/PESC.2008.4592482
IEEE Power Electronics Specialists Conference, 2008
Mechanical and Aerospace Engineering
Electrical and Computer Engineering
Keywords and Phrases
Coremaking; Environmental Engineering; Mechanisms; Power Converters; Power Electronics; Robust Control; Robustness (Control Systems)
Article - Conference proceedings
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