Control Method for Phase-Shift Full-Bridge Center-Tapped Converters Using a Hybrid Fuzzy Sliding Mode Controller

Lee, Young Jae; Bak, Yeongsu; Lee, Kyo‐Beum

doi:10.3390/electronics8060705

Cited by 19 publications

(9 citation statements)

References 38 publications

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“…In theory, the hard scheme drives the transistor instantaneously, whereas the soft scheme could introduce phase shifts between the bridge legs aiming to provide zero voltage switching. Soft switching increases the efficiency and reliability when using higher frequencies [15]. For the purpose of this paper and the provided hardware requirements, the selected control architecture uses hard switching metal‐oxide‐semiconductor field‐effect transistor (MOSFETs) transistors operating always under load.…”

Section: Methodsmentioning

confidence: 99%

High resolution FPGA pulse width modulation control of full‐bridge DC–DC converters

Tomov

Iliev

Krasteva

2020

IET Circuits, Devices & Systems

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Section: Methodsmentioning

confidence: 99%

High resolution FPGA pulse width modulation control of full‐bridge DC–DC converters

Tomov

Iliev

Krasteva

2020

IET Circuits, Devices & Systems

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“…Recently, the fuzzy logic control has been widely used in hybrid control systems, such as fuzzy PID, fuzzy sliding mode control, and fuzzy neural networks [28][29][30]. The numerous successful applications are largely due to it being able to conveniently map an input space to an output space using if-then rules.…”

Section: Fuzzy Logic Controlmentioning

confidence: 99%

New Sensorless Speed Control of a Hybrid Stepper Motor Based on Fuzzy Sliding Mode Observer

Wang

Cao

2020

Energies

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Stepper motors are widely used in industrial and consumer applications due to low-cost, high reliability, and open-loop control capability. Though open-loop features a simple structure, it bears low step resolution, high torque ripple, and low energy efficiency. To improve the performance without increasing hardware cost, a fuzzy sliding mode observer (SMO)-based new sensorless speed control structure is proposed. Unlike the conventional sensorless speed control, it does not use Park and inverse Park transformations to transform currents between a-b and d-q coordinates. Instead, it uses a new current transformation method to generate reference currents of stator windings, which not only reduces the calculation burden of the controller, but also improves the stability of the system. To reduce the chattering, a fuzzy logic controller (FLC) embedded into the SMO is designed to adjust the observer gain adaptively, without using the conventional method that replaces the discontinuous sign function with the continuous, such as sigmoid or saturation function. The effectiveness of the proposed controller is verified using MATLAB/Simulink simulation (R2018b, MathWorks, Natick, MA, USA) and experiment by assessing the speed and position tracking abilities.

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“…In sliding mode control (SMC), robustness, and stability are maintained, even plant has some uncertain and disturbances (Kavitha and Kavitha, 2019). SMC is a variable structure nonlinear controller which has two schemes, namely Direct and Indirect SMC (Panda and Ghosh, 2020), (Ramash Kumar, 2019), (Ramaprabha and Shanmugavadivu, 2020), (Lee et al, 2019). The previous scheme is a conventional one, where converter switching speed is high which results in increased power losses.Overall, SMC ensures stability and good dynamic performance to the converter for varying loads (Bartolini et al, 2008;Cavallo and Guida, 2012;Utkin et al, 2008;Utkin,1978;Venkataramanan et al, 1985).Dual loop concept with basic controllers (Goudarzian et al, 2020), (Saktheeswaran and Murali, 2020) enhance the performance of the system.…”

Section: Introductionmentioning

confidence: 99%

Performance analysis of boost converter with cascaded inner loop fuzzy SMC

Rekha¹,

Jamuna²,

Christopher³

2021

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Purpose This paper intent to design, develop, and fabricate a robust cascaded controller based on the dual loop concept i.e. Fuzzy Sliding Mode concept in the inner loop and traditional Proportional Integral controller in the outer loop to reduce the unknown dynamics and disturbances that occur in the DC-DC Converter. Design/methodology/approach The proposed Fuzzy sliding mode approach combines the merits of both SMC and Fuzzy logic control. FSMC approach reduces the chattering phenomena that commonly occurs in the sliding mode control and speed up the response of the controller. Findings In most of the research work, the inner current loop of cascaded controller was designed by sliding mode control. In this paper FSMC is proposed and its efficacy is confirmed with SMC -PI. In most uncertainties, FSMC-PI produces null maximum peak overshoot and a very less settling time of 0.0005 sec. Originality/value The presence of Fuzzy SMC in the inner loop ensure satisfactory response against all uncertainties such as steady state, circuit parameter variations and sudden line and load disturbances.

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Control Method for Phase-Shift Full-Bridge Center-Tapped Converters Using a Hybrid Fuzzy Sliding Mode Controller

Cited by 19 publications

References 38 publications

High resolution FPGA pulse width modulation control of full‐bridge DC–DC converters

High resolution FPGA pulse width modulation control of full‐bridge DC–DC converters

New Sensorless Speed Control of a Hybrid Stepper Motor Based on Fuzzy Sliding Mode Observer

Performance analysis of boost converter with cascaded inner loop fuzzy SMC

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