Geometrical insights into proportional derivative control of synchronous buck converters with constant power loads

Power electronics dominated systems, in particular systems including cascaded regulated converters, include converters that feed instantaneous constant power loads. To provide stable operation of buck converters with constant power loading, appropriate control of converter switching is required. In this work, the application of boundary control to buck converters with constant power loading is reviewed with a renewed focus on the synchronous topology, and the analysis and design of PD control for the same application is considered using geometrical insights from boundary control. The region of stable operation for the converter is verified using numerical simulation with ideal mathematical and switching models.

[1]  Dushan Boroyevich,et al.  Future electronic power distribution systems a contemplative view , 2010, 2010 12th International Conference on Optimization of Electrical and Electronic Equipment.

[2]  Alexis Kwasinski,et al.  Analysis of Boundary Control for Buck Converters With Instantaneous Constant-Power Loads , 2010, IEEE Transactions on Power Electronics.

[3]  Alexis Kwasinski,et al.  Decentralized control of a vehicular microgrid with constant power loads , 2014, 2014 IEEE International Electric Vehicle Conference (IEVC).

[4]  C. Rivetta,et al.  Large-signal analysis of a DC-DC buck power converter operating with constant power load , 2003, IECON'03. 29th Annual Conference of the IEEE Industrial Electronics Society (IEEE Cat. No.03CH37468).

[5]  V. Grigore,et al.  Stabilizing a telecom power supply feeding a constant power load , 1998, INTELEC - Twentieth International Telecommunications Energy Conference (Cat. No.98CH36263).

[6]  A. Kwasinski,et al.  Analysis of boundary control for boost and buck-boost converters in distributed power architectures with constant-power loads , 2011, 2011 Twenty-Sixth Annual IEEE Applied Power Electronics Conference and Exposition (APEC).

[7]  A. Kwasinski,et al.  Passivity-Based Control of Buck Converters with Constant-Power Loads , 2007, 2007 IEEE Power Electronics Specialists Conference.

[8]  P. Krein,et al.  Issues in Boundary Control , 1996 .

[9]  P. Krein,et al.  Issues in boundary control [of power convertors] , 1996, PESC Record. 27th Annual IEEE Power Electronics Specialists Conference.

[10]  Ali Emadi,et al.  Dynamics and control of multi-converter DC power electronic systems , 2001, 2001 IEEE 32nd Annual Power Electronics Specialists Conference (IEEE Cat. No.01CH37230).