A Simple Proportional Resonant Current Controller with Floor Function Modulation Strategy For a Three-Phase, Three-Level Reduced Component Count Based Active Front-End Converter

Bhanuchandar, Aratipamula; Murthy, Bhagwan K.

doi:10.1109/indicon59947.2023.10440745

2023 IEEE 20th India Council International Conference (INDICON) 2023

DOI: 10.1109/indicon59947.2023.10440745

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A Simple Proportional Resonant Current Controller with Floor Function Modulation Strategy For a Three-Phase, Three-Level Reduced Component Count Based Active Front-End Converter

Aratipamula Bhanuchandar,

Bhagwan K. Murthy

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2024

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Cited by 2 publications

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Modulated model predictive current control technique for triple‐boost seven‐level switched capacitor‐based inverter topology

Bhanuchandar,

Murthy

2024

Circuit Theory & Apps

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SummaryTraditionally, the finite control set‐based model predictive current control technique (MPC2T) inherently wrenches from the variable switching frequency of operation. To obtain the fixed switching frequency of operation, different types of predictive control approaches have been reported in the literature. However, these are complex while going to single‐phase higher‐level inverter topologies and are not to be generalized in a simple manner. In this paper, a new generalized modulated MPC2T has been proposed for single‐phase switched capacitor‐based multilevel inverter (SC‐MLI) topologies. In this technique, the optimum inverter output voltage (O‐IOV) has been generated by nullifying the derivative of the cost function. The normalized O‐IOV is fed to a new single modulating floor function (F2) single carrier‐based pulse width modulation technique. Compared to all routine PWM approaches, this specific F2‐based modulation stage is extremely straightforward even for higher‐level inverter topologies. The sensorless voltage balancing of switched capacitor topologies completely eradicates the need for weighting factors in predictive algorithms. To verify the robustness and performance of the perspicuous proposed technique, the conventional triple boost SC‐MLI topology has been considered and elucidated with the different steady and dynamic operation of results.

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Modulated model predictive current control technique for triple‐boost seven‐level switched capacitor‐based inverter topology

Bhanuchandar,

Murthy

2024

Circuit Theory & Apps

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A new single modulating and single carrier signal based control technique for symmetrical and asymmetrical multilevel inverter topology

Bhanuchandar,

Murthy

2024

International Journal of Emerging Electric Power Systems

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In literature, to generate gate pulses for any inverter topology, most of the authors are using a single modulating signal with (level-1) or (level-1)/2 carrier-based pulse width modulation (PWM) techniques and single carrier (SC) signal with (level-1)/2 modulating signal based PWM techniques. Then, while going to higher-level inverter topologies, the complexity of the PWM control approach in both cases can increase. To reduce the control complexity, few authors have reported a single modulating signal with single carrier-based PWM techniques. However, these techniques need more mathematical equations and if-else loops. This article proposes a new single-modulating and single-carrier signal-based generalized PWM control approach using floor function (FF). This technique has been verified by considering one of the single-phase conventional symmetrical and asymmetrical multilevel inverter (MLI) topologies. Generally, FF rounds the value to the nearest integer towards the negative infinity. The proposed PWM control implementation process is very simple and suitable for both high switching frequency (HSF) and low switching frequency (LSF) operations. The proposed control technique (PCT) has been experimentally verified with different steady-state and transient-state studies of results under standalone operation.

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A Simple Proportional Resonant Current Controller with Floor Function Modulation Strategy For a Three-Phase, Three-Level Reduced Component Count Based Active Front-End Converter

Cited by 2 publications

References 28 publications

Modulated model predictive current control technique for triple‐boost seven‐level switched capacitor‐based inverter topology

Modulated model predictive current control technique for triple‐boost seven‐level switched capacitor‐based inverter topology

A new single modulating and single carrier signal based control technique for symmetrical and asymmetrical multilevel inverter topology

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