Abstract
This paper puts forward an optimal quick-response variable structure control with a single-phase sine-wave inverter application, which keeps harmonic distortion as low as possible under various conditions of loading. Our proposed solution gives an improvement in architecture in which a quick-response variable structure control (QRVSC) is combined with a brain storm optimization (BSO) algorithm. Notwithstanding the intrinsic resilience of a typical VSC with respect to changes in plant parameters and loading disruptions, the system state convergence towards zero normally proceeds at an infinitely long-time asymptotically, and chattering behavior frequently takes place. The QRVSC for ensuring speedy limited-time convergence with the system state to the balancing point is devised, whilst the BSO will be employed to appropriately regulate the parametric gains in the QRVSC for the elimination of chattering phenomena. From the mix of both a QRVSC together with a BSO, a low total harmonic distortion (THD) as well as a high dynamic response across different types of loading is generated by a closed-loop inverter. The proposed solution is implemented on a practicable single-phase sine-wave inverter under the control of a TI DSP (Texas Instruments Digital Signal Processor). It has experimentally shown the simulation findings as well as the mathematical theoretical analysis, displaying that both quick transient reaction as well as stable performance could be obtained. The proposed solution successfully inhibits voltage harmonics in compliance with IEEE 519-2014’s stringent standard of limiting THD values to less than 5%.
Highlights
Sine-wave inverters with the rising number of concerns have found widespread applications in emergency backup power or renewable energy conversion systems, such as uninterruptible power supplies, solar power generation systems, and wind power generation systems [1,2]
A quick-response variable structure control (QRVSC) coupled with brain storm optimization (BSO) used in a single-phase sine-wave inverter controllable on a digital signal processor is described in this paper for the verification of the proposed solution
The QRVSC is able to cut down the very lengthy convergence time seen in typical Variable structure control (VSC); the quick-response variable structure control operated singlephase sine-wave inverter output-voltage continues to deliver undesirable tracking control with a high-level of distorted waveform as well as high-frequency chatter if the control parameters cannot be designed optimally
Summary
Sine-wave inverters with the rising number of concerns have found widespread applications in emergency backup power or renewable energy conversion systems, such as uninterruptible power supplies, solar power generation systems, and wind power generation systems [1,2]. Together with QRVSC and BSO, it is shown that the proposed system delivers an improvement in the steadystate and transient responsiveness of the sine-wave inverter which is sufficient to afford a qualitative level of AC output. Both numerical simulations and experimental results finalize the practicability as well as the strengths of the proposed controlling solution. Considering that there is parameter e a fully customized signal for the control, it will be sufficient for the overall system (2) to remain in a stable state as well as converging towards zero This is why the output of the inverter continues to be identical to expectations. Both the explanation and further deduction for the control design are presented hereafter
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