Stability and Dynamic Response of Analog and Digital Control loops of Bidirectional buck-boost Converter for Renewable Energy Applications
Viswanatha V1, Venkata Siva Reddy R2, Rajeswari3
1Mr. Viswanatha V, Department of Electronics and Communication, Acharya Institute of Technology, Bangalore, India.
2Dr. Venkata Siva Reddy R, Department of Electronics and Communication, REVA University, Bangalore, India.
3Dr. Rajeswari, Department of Electronics and Communication, Acharya Institute of Technology, Bangalore, India.
Manuscript received on 15 March 2019 | Revised Manuscript received on 21 March 2019 | Manuscript published on 30 July 2019 | PP: 5181-5186 | Volume-8 Issue-2, July 2019 | Retrieval Number: B3174078219/19©BEIESP | DOI: 10.35940/ijrte.B3174.078219
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© The Authors. Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC-BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)
Abstract: This article presents the stability and dynamic response of open loop and closed loop control of Bidirectional buck-boost converter (BBC) using PID and PIDN controllers through transfer function model implemented in MATLAB code. In order to ensure the stability of switch mode power supplies the control loop behaviors need to be characterized. Improvement of stability of BBC using PID/PIDN compensators is demonstrated in both analog and digital domains by plotting bode plots. Step response of BBC using PID /PIDN controllers are plotted that defines the dynamic behavior of the system. PIDN compensator is proposed to maintain a healthy balance between the stability and transient behavior since both are indirectly proportional.
Index Terms: Analog and Digital Control Loops, Bidirectional Buck-Boost Converter, Bode Plots, Dynamic Response, PID, PIDN, Stability Analysis.
Scope of the Article: Digital Clone or Simulation