Sliding-mode control of a CuK converter for voltage regulation of a dc-bus

Ramos‐Paja, Carlos Andrés; Montoya, Daniel; Bastidas‐Rodríguez, Juan David

doi:10.1016/j.seta.2020.100807

Cited by 9 publications

(4 citation statements)

References 35 publications

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“…Adaptive control of ZSI is illustrated in [18]. A charging/discharging system that consists of a Cuk converter and a new controller to adjust the voltage of a dc-bus, The Cuk converter ensures system stability and rapid dynamic response for all working circumstances, while the controller ensures constant currents for the battery and dc-bus [19]. SM controllers provide higher transient performance than both regular PIDs and fractional-order PIDs (FOPIDs).…”

Section: Introductionmentioning

confidence: 99%

FOPID controlled PV based QBC fed gamma Z-source inverter applicable for pump operations in an induction motor drive

Selvaraj,

David,

Sathi

et al. 2023

IJPEDS

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<span lang="EN-US">A closed loop current mode-fractional-order-PID (CM-FOPID) controlled and PV based quadratic-boost-converter (QBC) fed gamma Z-Source Inverter with Induction motor system (PV-QBC-GZSI-IMS) for pump operation is proposed here. This work recommends a combination of QBC with gamma Z-source-inverter between the DC link source and asynchronous motor system. This will reduce the voltage rating of PV panel and its initial cost. GZSI reduces the current spikes in stator current. The objective of this research work is to regulate the speed of PV-QBC-GZSI-IMS. This effort deals with the closed loop response of PV-QBC-GZSI-IMS accompanied by current-mode-proportional integral (CM-PI) and CM-FOPID controllers. The performance investigations are analyzed with the control of QBC fed Gamma Z-source inverter with motor load using CM-PI and CM-FOPID controllers and the detailed comparison has been presented. MATLAB/Simulink outputs obtained with their respective speed and torque characteristics in time domain have been depicted. The closed loop CM-FOPID control of PV-QBC-GZSI-IMS is superior to the closed loop CM-PI control of PV-QBC-GZSI-IMS. The proposed QBC-converter reduces the voltage rating of PV panel and GZSI reduces current spikes in motor. The novelty of the article is to enhance the dynamic response of PV-QBC-GZSI-IMS using FOPID. The steady state error in torque is reduced to 0.52 N-m using FOPID.</span>

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Section: Introductionmentioning

confidence: 99%

FOPID controlled PV based QBC fed gamma Z-source inverter applicable for pump operations in an induction motor drive

Selvaraj,

David,

Sathi

et al. 2023

IJPEDS

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show abstract

“…As an intermediary step, a high voltage gain converter is a substantial subsystem that is used to efficiently utilize the high voltage demands of DC homes, electric vehicles, and DC micro-grids, among other things. 1,2 Nevertheless, the output from the PV source has low voltage and thus cannot be used directly for high voltage applications. 3 Therefore, the DC-DC converter needs to be cautiously designed to accomplish high efficiency.…”

Section: Introductionmentioning

confidence: 99%

“…The universal architecture of an advanced smart DC grid system with PV and fuel cell systems is shown in Figure 1. As an intermediary step, a high voltage gain converter is a substantial subsystem that is used to efficiently utilize the high voltage demands of DC homes, electric vehicles, and DC micro‐grids, among other things 1,2 . Nevertheless, the output from the PV source has low voltage and thus cannot be used directly for high voltage applications 3 .…”

Section: Introductionmentioning

confidence: 99%

An efficient switched inductor–capacitor‐based novel non‐isolated high gain SEPIC for solar energy applications

Chandra

Gaur

2022

Circuit Theory & Apps

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The solar photovoltaic (PV) sources have low voltage output and hence cannot be used directly in micro‐grid applications. Therefore, to boost the low voltage output, a novel high gain single‐ended primary inductor converter (SEPIC) is proposed in this manuscript. The proposed high gain SEPIC (HGS) has an advantage of obtaining high voltage gain at a low duty ratio and continuous input current, which makes it viable for PV applications. The proposed converter offers simple control, and the high gain is obtained without the use of any transformer or coupled inductor so the semiconductor switch will not experience a voltage overshoot during the turn‐off operation. Hence, the conduction losses of the converter switch are reduced, and the performance of the converter is enhanced. Additionally, this manuscript also investigates the effectiveness of the proposed HGS in integration with the PV array. An extensive performance evaluation of the proposed HGS is investigated and compared with different SEPIC topologies in irradiance change conditions. Experimental implementation of the proposed HGS confirms the theoretical analysis and verifies the performance. Also, the real time (RT) analysis of the proposed HGS with PV array is conducted to show the validation of high gain operation for the PV application.

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“…This motivates to improve converters to be more reliable (Yu et al, 2012), high quality (Alsolami 2021), efficient (Eguchi et al, 2020), and well controlled (Li et al, 2021). There are several DC-DC converter topologies, such as the boost type (Chen et al, 2020), buck type (Basharat et al, 2021), buck-boost type (Yang et al, 2020), Cuk type (Ramos-Paja, et al, 2020), and zeta type converter (Arun and Manigandan, 2021). Among these topologies, the boost type is widely used in many industrial applications (Amirabadi 2016).…”

Section: Introductionmentioning

confidence: 99%

Control of Boost Converter Using Observer-Based Backstepping Sliding Mode Control for DC Microgrid

et al. 2022

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The output voltage of a photovoltaic (PV) system relies on temperature and solar irradiance; therefore, the PV system and a load cannot be connected directly. To control the output voltage, a DC-DC boost converter is required. However, regulating this converter is a very complicated problem due to its non-linear time-variant and non-minimum phase circuit. Furthermore, the problem becomes more challenging due to uncertainty about the output voltage of the PV system and variation in the load, which is a non-linear disturbance. In this study, an observer-based backstepping sliding mode control (OBSMC) is proposed to regulate the output voltage of a DC-DC boost converter. The input voltage of the converter can be a DC energy source such as PV-based microgrid systems. An adaptive scheme and sliding mode controller constructed from a dynamic model of the converter is used to design an observer. This observer estimates unmeasured system states such as inductor current, capacitor voltage, uncertainty output voltages of the PV cell, and variation of loads such that the system does not need any sensors. In addition, the backstepping technique has been combined with the SMC to make the controller more stable and robust. In addition, the Lyapunov direct method is employed to ensure the stability of the proposed method. By employing the proposed configuration, the control performance was improved. To verify the effectiveness of the proposed controller, a numerical simulation was conducted. The simulation results show that the proposed method is always able to accurately follow the desired voltage with more robustness, fewer steady-state errors, smaller overshoot, faster recovery time, and faster transient response time. In addition, the proposed method consistently produces the least value of integral absolute error.

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Sliding-mode control of a CuK converter for voltage regulation of a dc-bus

Cited by 9 publications

References 35 publications

FOPID controlled PV based QBC fed gamma Z-source inverter applicable for pump operations in an induction motor drive

FOPID controlled PV based QBC fed gamma Z-source inverter applicable for pump operations in an induction motor drive

An efficient switched inductor–capacitor‐based novel non‐isolated high gain SEPIC for solar energy applications

Control of Boost Converter Using Observer-Based Backstepping Sliding Mode Control for DC Microgrid

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