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30 June 2023
Stability Analysis and Efficiency Improvement of a Multi-converter System Using Multi-objective Decision Making
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Multi-converter system is mainly used in advanced automotive systems. Different converters and inverters are taking part in automotive systems to provide different voltage levels in a multi-converter system. It involves constant voltage load (CVL), constant power load (CPL) and other loads. The CPL in such systems offers negative impedance characteristic and it creates a destabilizing effect on the main converter. The effect of destabilization can be reduced by increasing the CVL or inserting parasitic components. Attempts have been made by authors to improve the stability by using parasitics of different components such as switch, diode and inductor. Influence of insertion of parasitics including the series equivalent resistance of the filter capacitor and variation in CVL on the performance of main converter is mathematically analyzed and conflicting behavior between system stability and efficiency is observed. The optimum solution between these two functions is obtained by using multi-objective decision making (MODM) by varying parasitics of different components and CVL. An attempt has been made to demonstrate the effect of CVL load and the parasitics on the stability and efficiency of the main converter, experimentally.
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Stability Analysis and Efficiency Improvement of a Multi-converter System Using Multi-objective Decision Making
),
Abstract
Multi-converter system is mainly used in advanced automotive systems. Different converters and inverters are taking part in automotive systems to provide different voltage levels in a multi-converter system. It involves constant voltage load (CVL), constant power load (CPL) and other loads. The CPL in such systems offers negative impedance characteristic and it creates a destabilizing effect on the main converter. The effect of destabilization can be reduced by increasing the CVL or inserting parasitic components. Attempts have been made by authors to improve the stability by using parasitics of different components such as switch, diode and inductor. Influence of insertion of parasitics including the series equivalent resistance of the filter capacitor and variation in CVL on the performance of main converter is mathematically analyzed and conflicting behavior between system stability and efficiency is observed. The optimum solution between these two functions is obtained by using multi-objective decision making (MODM) by varying parasitics of different components and CVL. An attempt has been made to demonstrate the effect of CVL load and the parasitics on the stability and efficiency of the main converter, experimentally.
References(31)
A Emadi, A Khaligh, C H Rivetta, et al. Constant power loads and negative impedance instability in automotive systems: Definition, modeling, stability, and control of power electronic converters and motor drives. IEEE Transactions on Vehicular Technology, 2006, 55(4): 1112-1125.
A Emadi, M Ehsani, J M Miller. Vehicular electric power systems: Land, sea, air, and space vehicles. CRC Press, 2003.
S Singh, A R Gautam, D Fulwani. Constant power loads and their effects in DC distributed power systems: A review. Renewable and Sustainable Energy Reviews, 2017, 72: 407-421.
E Hossain, R Perez, A Nasiri, et al. A comprehensive review on constant power loads compensation techniques. IEEE Access, 2018, 6: 33285-33305.
Y Zhao, W Qiao, D Ha. A sliding-mode duty-ratio controller for DC/DC buck converters with constant power loads. IEEE Transactions on Industry Applications, 2014, 50(2): 1448-1458.
A Davoudi, J Jatskevich. Realization of parasitics in state-space average-value modeling of PWM DC-DC converters. IEEE Transactions on Power Electronics, 2006, 21(4): 1142-1147.
N Mohan, T M Undeland. Power electronics: Converters, applications, and design. New York: John Wiley & Sons, 2007.
R Kaur, S Kumar. Stability and dynamic characteristics analysis of DC-DC buck converter via mathematical modelling. 2015 International Conference on Recent Developments in Control, Automation and Power Engineering (RDCAPE), 2015: 253-258.
J Pakdeeto, K Areerak, S Bozhko, et al. Stabilization of DC microgrid systems using the loop-cancellation technique. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2021, 9: 2652-2663.
H Bae, J Yang, J Lee, et al. Digital state feedback current control using pole placement technique for the 42 V/14 V bi-directional DC-DC converter application. APEC 07-Twenty-Second Annual IEEE Applied Power Electronics Conference and Exposition, 2007: 3-7.
Y Li, K R Vannorsdel, A J Zirger, et al. Current mode control for boost converters with constant power loads. IEEE Transactions on Circuits and Systems Ⅰ: Regular Papers, 2011, 59: 198-206.
A Khaligh, A Emadi. Modified pulse adjustment technique with variable states to control DC-DC converters operating in discontinuous conduction mode and driving constant power loads. 2006 1st IEEE Conference on Industrial Electronics and Applications, 2006: 1-6.
A Khaligh, A Emadi. Power alignment, new digital control approach for a DC-DC flyback converter with constant power loads. 2006 1st IEEE Conference on Industrial Electronics and Applications, 2006: 1-6.
A M Rahimi, G A Williamson, A Emadi. Loop-cancellation technique: A novel nonlinear feedback to overcome the destabilizing effect of constant-power loads. IEEE Transactions on Vehicular Technology, 2010, 59: 650-661.
A Emadi, M Ehsani. Negative impedance stabilizing controls for PWM DC-DC converters using feedback linearization techniques. 35th Intersociety Energy Conversion Engineering Conference and Exhibit (IECEC)(Cat. No. 00CH37022), 2000: 613-620.
M N Hussain, V Agarwal. Optimal placement of constant power loads at different buses of a DC microgrid ensuring maximum stability margins. IEEE Journal of Emerging and Selected Topics in Power Electronics, 2019, 9(1): 510-519.
C A Soriano-Rangel, W He, F Mancilla-David, et al. Voltage regulation in buck-boost converters feeding an unknown constant power load: An adaptive passivity-based control. IEEE Transactions on Control Systems Technology, 2021, 29(1): 395-402.
N Ghanbari, S Bhattacharya. Constant power load analysis in droop controlled microgrids for more electric aircraft application. 2020 IEEE Transportation Electrification Conference & Expo (ITEC), 2020: 814-819.
A C Braitor, G C Konstantopoulos, V Kadirkamanathan. Current-limiting droop control design and stability analysis for paralleled boost converters in DC microgrids. IEEE Transactions on Control Systems Technology, 2020, 29: 385-394.
K E Lucas, D J Pagano, D A Vaca-Benavides, et al. Robust control of interconnected power electronic converters to enhance performance in dc distribution systems: A case of study. IEEE Transactions on Power Electronics, 2020, 36: 4851-4863.
X Li, W Jiang, J Wang, et al. An autonomous control scheme of global smooth transitions for bidirectional DC-DC converter in DC microgrid. IEEE Transactions on Energy Conversion, 2020, 36(2): 950-960.
S Zhuo, A Gaillard, D Paire, et al. Control of Interleaved converters with constant power load for DC microgrid application. 2020 IEEE Industry Applications Society Annual Meeting, 2020: 1-6.
A Khaligh. Realization of parasitics in stability of DC-DC converters loaded by constant power loads in advanced multiconverter automotive systems. IEEE Transactions on Industrial Electronics, 2008, 55: 2295-2305.
R Patel, R Chudamani. Stability analysis of the main converter supplying a constant power load in a multi-converter system considering various parasitic elements. Engineering Science and Technology, 2020, 23(5): 1118-1125.
C L Hwang, S R Paidy, K Yoon, et al. Mathematical programming with multiple objectives: A tutorial. Computers & Operations Research, 1980, 7: 5-31.
J H de Freitas Gomes, S Júnior, A Ramos, et al. Global criterion method based on principal components to the optimization of manufacturing processes with multiple responses. Journal of Mechanical Engineering, 2012, 58(5): 345-353.
G Mahapatra. Reliability optimization of entropy based series-parallel system using global criterion method. Intelligent Information Management, 2009, 1: 145.
