Analysis and Dual-loop PI Control of Bidirectional Quasi Z-Source DC-DC Converter

Battula, Santhoshkumar; Garg, Man Mohan; Panda, Anup Kumar; Korukonda, Meher Preetam; Behera, Laxmidhar

doi:10.1109/iecon43393.2020.9255017

Cited by 17 publications

(7 citation statements)

References 18 publications

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“…Under varying environmental conditions, a double loop PI control examines the voltage and current and delivers the switching that permits the BDC converter to maintain constant and continuous power across the DC link. A permanent magnet DC (PMDC) motor on account of easy control and efficient DC drives are majorly used in water pumping and electric vehicle in low-cost applications [15], [16]. Although brushless DC (BLDC) motors are widely used in electric and hybrid vehicles as these are easy to regulate, inexpensive, and have a larger load capacity, they have the disadvantage of having brushed commutators that induce commutator wear and shorten motor life.…”

Section: Introductionmentioning

confidence: 99%

Performance evaluation of a PMDC motor with battery storage control and MPPT based solar photovoltaic system

Mohammad

Ahmad²,

Farooqui

et al. 2022

IJPEDS

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This paper analyzes and demonstrates the performance of a solar photovoltaic (SPV)-fed permanent magnet DC (PMDC) motor under various operating conditions. In this configuration, a 5HP PMDC is coupled to a SPV system and a boost converter has been interfaced between them to regulate the DC output voltage acquired from the SPV system. The switching pulse to the converter has been provided by the maximum power point tracking (MPPT) controller (P&O and INC) in order to acquire maximum and desired power across the DC link with varying irradiance. A battery energy storage system (BESS) is often used in association with this configuration caused by the non-linear nature of the SPV system and to overcome the volatility of the DC connection affected by environmental effects. For this purpose, a double loop PI controller is analyzed, and examined the DC link. Additionally, the operation of bidirectional DC-DC converter in buck and boost mode during battery charging and discharging is also performed. This operation ensures maintaining a constant and continuous power across the DC link to regulate the PMDC motor consistently. A comparison of results has also been presented for both incremental and conductance (INC) and P&O controllers. The mathematical modeling of configuration has been performed in MATLAB/Simulink software. The results and key findings have been tabulated and even elaborated graphically.

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Section: Introductionmentioning

confidence: 99%

Performance evaluation of a PMDC motor with battery storage control and MPPT based solar photovoltaic system

Mohammad

Ahmad²,

Farooqui

et al. 2022

IJPEDS

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“…In [12], QZSC has been used in bidirectional power flow applications, where the buck and boost modes were individually controlled [13,14]. However, in the case of the converter connected to a standalone microgrid, it is essential that the DC link voltage is regulated in both modes of operation based on the power demand [14][15][16][17].…”

Section: Introductionmentioning

confidence: 99%

Design and Development of Fixed-Frequency Double-Integral SM-Controlled Solar-Integrated Bidirectional Quasi Z-Source DC-DC Converter in Standalone Battery Connected System

Battula

Panda

Garg

2022

International Transactions on Electrical Energy Systems

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DC microgrids have been quite popular in recent times. The operational challenges like control and energy management of the renewable-driven standalone DC microgrids have been an interest of research. This paper presents a bidirectional quasi Z-source DC-DC converter (BQZSDC). This converter topology has been developed based on a conventional buck-boost type bidirectional converter, and it interfaces the storage system and the common DC bus. The challenge, however, lies in effectively managing the uncertain renewable energy sources and the storage system and catering for the loads simultaneously. An effective control strategy is needed for that energy management and to achieve various microgrid objectives. This paper deals with one such effective control strategy implemented for BQZSDC. That is, the fixed-frequency double-integral sliding mode control (FF-DISMC) controls the converter to regulate the DC bus voltage and battery current. A detailed analysis of the controller is conducted, and its performance is evaluated for both charging (buck) and discharging (boost) modes. Simulations have been performed in MATLAB, showing that the controller performs satisfactorily in achieving the objectives of voltage regulation and battery current regulation. Finally, the performance of the proposed controller is validated with the hardware setup.

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“…The proportional integral (PI) controllers are designed by linearizing the system. 15 The dynamic behavior of BQZSDC with PI controllers is poor under large-signal perturbations. A nonlinear controller can control the nonlinear converter parameters to solve the above problem.…”

Section: Introductionmentioning

confidence: 99%

Bidirectional quasi‐Z‐source DC‐DC converter with Lyapunov function‐based controller in stand‐alone photovoltaic‐connected system

Battula

Garg

Lenka

et al. 2022

Circuit Theory & Apps

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This article proposes a bidirectional quasi-Z-source DC-DC converter (BQZSDC) to integrate distributed energy storage system with a stand-alone photovoltaic (PV)-connected system. The operational challenges like control and energy management of the renewable-driven stand-alone systems have been an interest of research. However, the challenge is managing the renewable energy source and the distributed energy storage system and simultaneously catering to the loads. This article analyzes the performance of a BQZSDC with a Lyapunov function-based controller for regulating DC link voltage (load voltage) and battery current. A duty-ratio feedforward control unit and a Lyapunov function-based feedback control unit are used to develop the controller. The duty-ratio feedforward control unit is used to reduce the burden on the feedback controller. The closed-loop system is exponentially stable with the feedback controller, offering excellent transient responsiveness even under large disturbances. Simulations in MATLAB/Simulink show that the controller functions satisfactorily in achieving regulation objectives. Finally, experimental results validate the performance of the proposed controller.

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Analysis and Dual-loop PI Control of Bidirectional Quasi Z-Source DC-DC Converter

Cited by 17 publications

References 18 publications

Performance evaluation of a PMDC motor with battery storage control and MPPT based solar photovoltaic system

Performance evaluation of a PMDC motor with battery storage control and MPPT based solar photovoltaic system

Design and Development of Fixed-Frequency Double-Integral SM-Controlled Solar-Integrated Bidirectional Quasi Z-Source DC-DC Converter in Standalone Battery Connected System

Bidirectional quasi‐Z‐source DC‐DC converter with Lyapunov function‐based controller in stand‐alone photovoltaic‐connected system

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