This paper explores the semi-global active uncertainty attenuation control problem for the DC–DC buck power converters. Taking consideration that the involved components may be subject to uncertainties and unknown time variation, a robust control result has been developed by utilizing a sensor-less control method via an output feedback domination technique and a generalized extended state observer. Explicit stability analysis shows the theoretical justification of the proposed design procedure. Numerical simulation results are presented to show that with different application requirements, the proposed control algorithm could perform with strong robustness against internal parameter uncertainties and has a nice disturbance rejection ability against internal/external disturbances. Moreover, the proposed control scheme consists of a set of linear equations with more flexibility of the gain selections but without losing its high-precision voltage-tracking performance, hence it will provide the engineers with convenient and easy implementations.
Alvarez-RamirezJEspinosa-PérezGNoriega-PinedaD (2003) Current-mode control of DC–DC power converters: a backstepping approach. International Journal of Robust and Nonlinear Control13(5): 421–442.
2.
CaoDJiangSPengFZ (2013) Optimal design of multilevel modular capacitor-clamped DC–DC converter. IEEE Transactions on Power Electronics28(8): 3816–3826.
3.
DingSWangJZhengWX (2015) Second-order sliding mode control for nonlinear uncertain systems bounded by positive functions. IEEE Transactions on Industrial Electronics. DOI: 10.1109/TIE.2015.2448064.
4.
El FadilHGiriFEl MagueriOChaouiF (2009) Control of DC–DC power converters in the presence of coil magnetic saturation. Control Engineering Practice17(7): 849–862.
5.
El FadilHGirtF (2007) Backstepping based control of PWM DC–DC boost power converters. In IEEE International Symposium on Industrial Electronics, pp. 395–400.
6.
ElmasCDeperliogluOSayanHH (2009) Adaptive fuzzy logic controller for DC–DC converters. Expert Systems with Applications36(2): 1540–1548.
7.
GarciaOVasićMAlouPOliverJCobosJ (2013) An overiew of fast DC–DC converters for envelope amplifier in RF transmitters. IEEE Transactions on Power Electronics28(10): 4712–4722.
8.
HanJ (2009) From PID to active disturbance rejection control. IEEE Transactions on Industrial Electronics56(3): 900–906.
9.
HeYLuoFL (2006) Sliding-mode control for DC–DC converters with constant switching frequency. IEE Proceedings—Control Theory and Applications153(1): 37–45.
10.
IsidoriA (1995) Nonlinear control systems (Communications and Control Engineering Series), 3rd edition. Berlin: Springer-Verlag.
11.
KaramanakosPGeyerTManiasS (2014) Direct voltage control of DC–DC boost converters using enumeration-based model predictive control. IEEE Transactions on Power Electronics29(2): 968–978.
12.
KomurcugilH (2012) Non-singular terminal sliding-mode control of DC–DC buck converters. Control Engineering Practice21(3): 321–332.
MeyerEZhangZLiuYF (2008) An optimal control method for buck converters using a practical capacitor chargebalance technique. IEEE Transactions on Power Electronics23(4): 1802–1812.
15.
MiddlebrookRDCukS (1976) A general unified approach to modelling switching-converter power stages. Power Electronics Specialists Conference1: 18–34.
16.
QianCLinW (2002) Output feedback control of a class of nonlinear systems: a nonseparation principle paradigm. IEEE Transactions on Automatic Control47(10): 1710–1715.
17.
QiuYLiuHChenX (2010) Digital average current-mode control of PWM DC–DC converters without current sensors. IEEE Transactions on Industrial Electronics57(5): 1670–1677.
18.
ReteguiRBenedettiMFunesMAntoszczukPCarricaD (2012) Current control for high-dynamic high-power multiphase buck converters. IEEE Transactions on Power Electronics27(2): 614–618.
19.
SunBGaoZ (2005) A DSP-based active disturbance rejection control design for a 1-kW H-bridge DC–DC power converter. IEEE Transactions on Industrial Electronics52(5): 1271–1277.
20.
TanSCLaiYMTseCK (2011) Sliding mode control of switching power converters. Boca Raton, FL: CRC Press.
21.
WangJLiSYangJWuBLiQ (2015) Extended state observer-based sliding mode control for PWM-based DC–DC buck power converter systems with mismatched disturbances. IET Control Theory and Applications, in press.
22.
WangLPeiYYangXQinYWangZ (2012) Improving light and intermediate load efficiencies of buck converters with planar nonlinear inductors and variable on time control. IEEE Transactions on Power Electronics27(1): 342–353.
23.
WuBYangJWangJLiS (2014) Extended state observer based control for DC–DC buck converters subject to mismatched disturbances. In Proceedings of the 33rd Chinese control conference, Nanjing, China, pp. 8080–8085.
24.
YangJZhengWLiSWuBChengM (2015) Design of a prediction accuracy enhanced continuous-time MPC for disturbed systems via a disturbance observer. IEEE Transactions on Industrial Electronics. DOI: 10.1109/TIE.2015.2450736.
25.
ZhangCJiaRQianCLiS (2015a) Semi-global stabilization via linear sampled-data output feedback for a class of uncertain nonlinear systems. International Journal of Robust and Nonlinear Control25(13): 2041–2061.
26.
ZhangCLiSWangJ (2015b) Finite-time control of direct current direct current boost converters in the presence of coil magnetic saturation. Transactions of the Institute of Measurement and Control37(1): 114–121.
27.
ZhangCWangJLiSWuBQianC (2015c) Robust control for PWM-based DC–DC buck power converters with uncertainty via sampled-data output feedback. IEEE Transactions on Power Electronics30(1): 504–515.
