37. savetovanje CIGRE Srbija (2025) SIGURNOST, STABILNOST, POUZDANOST I RESILIENCE ELEKTROENERGETSKOG SISTEMA MULTISEKTORSKO POVEZIVANJE U ENERGETICI I PRIVREDI – B4-10
AUTOR(I) / AUTHOR(S): Dušan Bižić, Aleksandar Milić, Nikola Mirković
DOI: 10.46793/CIGRE37.B4.10
SAŽETAK / ABSTRACT:
In recent years, there has been a significant expansion of systems operating in islanded mode without connection to the power grid. For these systems, which are often used in sensitive applications such as navigation and radar systems, as well as in light electric vehicles, it is crucial to ensure the necessary autonomy and robust operation in the presence of disturbances and changes in the system’s nominal parameters. These systems mostly utilize power electronics devices, acting as voltage or current actuators, which are digitally controlled due to significantly greater flexibility when dealing with load-side and power source uncertainties. In such cases, the demands for stable and efficient power supply posing challenges in the design of control systems can be met with new software solutions designed for real-time applications. This paper presents a methodology for developing software that performs autotuning of current regulators. The autotuning algorithm is based on the principle of a digital relay experiment and is carried out during system initialization, eliminating the need for prior knowledge of the controlled system’s parameters or additional user intervention. The same mathematical operations used in PID controller algorithms are employed, meaning no additional hardware or upgrades to the existing digital signal processor (DSP) are required.
The proposed methodology reduces the time required for implementing such systems in practice, particularly in the design and verification phases of closed-loop performance. Validation of the proposed methodology was conducted through simulations on a Hardware-In-the-Loop (HIL) platform.
KLJUČNE REČI / KEYWORDS:
regulator autotuning, HIL, multiphase buck converter, digital control of power converters
PROJEKAT / ACKNOWLEDGEMENT:
LITERATURA / REFERENCES:
- Maksimović, Zane and Erickson, „Impact of digital control in power electronics,“ 2004 International Symposium on Power Semiconductor Devices and ICs,, Japan, 2004
- Xunwei Zhou et al., „Investigation of candidate VRM topologies for future microprocessors“, APEC ’98 Thirteenth Annual Applied Power Electronics Conference and Exposition, Anaheim, CA, USA, 1998.
- J. Gordillo and C. Aguilar, „A Simple Sensorless Current Sharing Technique for Multiphase DC–DC Buck Converters“ in IEEE Transactions on Power Electronics, vol. 32, no. 5, pp. 3480-3489, May 2017.
- Y. Panov and M. M. Jovanović, „Design considerations for 12-V/1.5-V, 50-A voltage regulator modules,“ in IEEE Transactions on Power Electronics, vol. 16, no. 6, pp. 776-783, Nov. 2001.
- W. Stefanutti, P. Mattavelli, S. Saggini and M. Ghioni, „Autotuning of Digitally Controlled DC–DC Converters Based on Relay Feedback,“ in IEEE Transactions on Power Electronics, vol. 22, no. 1, pp. 199-207, Jan. 2007.
- L. Corradini, P. Mattavelli and D. Maksimović, „Robust Relay-Feedback Based Autotuning for DC-DC Converters,“ 2007 IEEE Power Electronics Specialists Conference, USA, 2007.
- O. GarcÍa, P. Zumel, A. de Castro, P. Alou and J. A. Cobos, „Current Self-Balance Mechanism in Multiphase Buck Converter,“ in IEEE Transactions on Power Electronics, vol. 24, no. 6, pp. 1600-1606, June 2009.
- K. J. Åström, T. Hägglund, „Automatic tuning of simple regulators with specifications on phase and amplitude margins“, in Automatica,vol. 20, no. 5, 1984.
- S. Moon, L. Corradini and D. Maksimović, „Auto-tuning of digitally controlled boost Power Factor Correction rectifiers operating in continuous conduction mode,“ in IEEE 12th Workshop on Control and Modeling for Power Electronics, USA, 2010.
- Tomislav B. Šekara, Miroslav R. Mataušek, “Relay-based critical point estimation of a process with the PID controller in the loop“ in Automatica, vol. 47, no. 5, 2011.
- Stojić, Milić R. „Kontinualni sistemi automatskog upravljanja“, Naučna knjiga, Beograd, 1980.
- Luca Corradini, Dragan Maksimović, Paolo Mattavelli, Regan Zane „Digital Control of High‐Frequency Switched‐Mode Power Converters“, John Wiley & Sons, Inc, 2015.
- B. Miao, R. Zane and D. Maksimovic, „Practical on-line identification of power converter dynamic responses,“ Twentieth Annual IEEE Applied Power Electronics Conference and Exposition, 2005.