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. 2023 Mar 15;13(1):4276.
doi: 10.1038/s41598-023-31293-5.

Design, implementation and performance evaluation of multi-function boost converter

Marwa S Osheba  1 , Azza E Lashine  2 , Arafa S Mansour  3
Affiliations

Design, implementation and performance evaluation of multi-function boost converter

Marwa S Osheba et al. Sci Rep. .

Abstract

This paper introduces a single-phase multi-function converter (MFC) circuit that can perform the power electronics functions of a DC-DC, a DC-AC, an AC-AC, and an AC-DC boost converter. The power circuit of the proposed converter contains only four bi-directional switches, which is sufficient side by side with a switched logic-based control system to execute converter functions. The proposed converter can implement the boosting converter function, which is a drawback of the conventional single-phase matrix converter, which is limited to performing the buck converter functions. The mathematical analysis of each converter function is presented. A state space averaging technique is employed to obtain the time-invariant state space model for a better understanding of the converter characteristics. The frequency response approach is used to demonstrate the effect of circuit parameters on converter stability using the time-invariant state-space model. Moreover, the performance analysis of the system is checked through the building of a simulation model of the proposed converter via MATLAB/Simulink and MATLAB/Simscape toolbox integration. Additionally, the actual performance of the proposed converter is verified through a laboratory prototype experimental study. The experimental results confirm those obtained by computer simulation, clearly demonstrating the successful operation of the proposed circuit as a multi-function converter with acceptable levels of total harmonic distortion (THD).

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Conflict of interest statement

The authors declare no competing interests.

Figures

Figure 1
Figure 1
The circuit topology.
Figure 2
Figure 2
Circuit operation modes.
Figure 3
Figure 3
Effects of varying the inductance, Bode-plot.
Figure 4
Figure 4
Effects of varying the inductance, Pole-Zero. (a) L = 5 mH, C = 50 µF, (b) L = 15 mH, C = 50 µF, (c) L = 75 mH, C = 50 µF.
Figure 5
Figure 5
Effects of varying the inductance, Bode-plot.
Figure 6
Figure 6
Effects of varying the capacitance, Pole-Zero. (a) L = 15 mH, C = 5 μF, (b) L = 15 mH, C = 50 μF, (c) L = 15 mH, C = 150 μF.
Figure 7
Figure 7
Implementation block diagram.
Figure 8
Figure 8
Response to successive changes in the reference voltage. (a) System response without inner loop system, (b) response with inner loop.
Figure 9
Figure 9
Response to 150%, 200% and 250% of supply voltage, DC–DC.
Figure 10
Figure 10
Response to a step change in the reference voltage. (a) DC Input voltage and output AC voltage, (b) total harmonic distortion (THD).
Figure 11
Figure 11
Response to a 25% step reduction in the reference voltage, AC–AC. (a) Input and output voltages, (b) total harmonic distortion (THD).
Figure 12
Figure 12
Response to a successive change in the reference voltage, AC–DC. (a) Input/output voltages, (b) inductor and load currents.
Figure 13
Figure 13
Experimental setup for the proposed circuit.
Figure 14
Figure 14
Circuit Performance as DC-DC converter, PB. (a) Inductor and output currents, (b) input and output voltages.
Figure 15
Figure 15
Response to a step decrease, NB. (a) Inductor and output currents, (b) input and output voltages.
Figure 16
Figure 16
Circuit performance as an inverter. (a) Inductor and output current, (b) input and output voltages, (c) THD level.
Figure 17
Figure 17
Response to a step change in the reference voltage. (a) Inductor and output currents, (b) input and output voltages.
Figure 18
Figure 18
Circuit performance as an AC–AC converter. (a) Inductor and output currents, (b) input and output voltages, (c) THD Level.
Figure 19
Figure 19
Response to a step change in the reference voltage. (a) Inductor and output currents, (b) input and output voltages.
Figure 20
Figure 20
Response to a step change in the reference voltage AC–DC. (a) Inductor and output currents, (b) input and output voltages.
Figure 21
Figure 21
Efficiency of the proposed converter.
See this image and copyright information in PMC

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