The Effect of Amplitude Modulation Index and Frequency Modulation Index on Total Harmonic Distortion in 1-Phase Inverter

Ismail, Nanang; Permadi, A.; Risdiyanto, Agus; Susanto, Bambang; Ramdhani, Muhammad Ali

doi:10.1088/1757-899x/288/1/012107

Cited by 5 publications

(9 citation statements)

References 3 publications

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“…There are two methods SPWM; Unipolar and Bipolar SPWM. Unipolar SPWM method is capable of producing output inverter with a lower harmonic disturbances compared with Bipolar SPWM method [9][10][11][12]. However, the SPWM output produces rectangle output wave which contains high harmonic components.…”

Section: Related Workmentioning

confidence: 99%

Selection Method of Modulation Index and Frequency ratio for Getting the SPWM Minimum Harmonic of Single Phase Inverter

Kristi

Susanto

Risdiyanto

et al. 2021

emitter

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Harmonic content is an important parameter in relation to the power generated by inverter. In power conversion technology of inverter, sinusoidal pulse width modulation (SPWM) is the most popular used by many researchers. The advantages of SPWM inverter operation as a conversion technique compared to other inverter types can be seen from the low harmonic distortion in the output voltage of inverter. Therefore, the SPWM signal generation process becomes a determining factor for the performance of the overall system. This paper present the method for selecting the modulation index (ma) and frequency ratio (mf) using Cubic Spline Interpolation to get minimum harmonic of SPWM inverter that generated. Both parameters controlled with varied values digitally using microcontroller to generate SPWM, then the output of inverter with and without LC filter was investigated. The results show that the use of Cubic Spline Interpolation method in the selection of ma and mf precisely managed to produce SPWM inverter with minimum harmonic content. At the inverter output, the use of LC filter is not only useful for converting SPWM signals to sinusoidal waveforms but can also reduce harmonic content significantly less than 3 %.

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Section: Related Workmentioning

confidence: 99%

Selection Method of Modulation Index and Frequency ratio for Getting the SPWM Minimum Harmonic of Single Phase Inverter

Kristi

Susanto

Risdiyanto

et al. 2021

emitter

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“…In off-grid and on-grid solar PV systems, DC-AC inverter (inverter) is common component needed to transmit DC energy from solar PV to AC loads. In the process of converting the dc voltage and current from PV, the irradiation change becomes the disturbance factor so that the voltage and current generated by the inverter need to be optimized [18]. In this paper, the working principle of the single phase H-bridge VSI can be explained by the use of four power switches as shown in Figure 4.…”

Section: Dc-ac Invertermentioning

confidence: 99%

Design of constant output voltage DC-AC inverter for batteryless solar PV system

et al. 2020

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This paper introduces a DC-AC inverter design that operates stand alone to deliver power from solar photovoltaic (PV) to the load directly without going through the battery. In batteryless solar PV, the output voltage of solar PV always varies according to solar irradiation, temperature, so that it becomes a challenge in modelling DC-AC inverter with constant output voltage. The design consists of a boost converter, h-bridge switching and driver, and LC filter to generate sinusoidal ac voltage as output to load. To ensure a constant inverter output voltage, the design equipped by a close loop PI controller based on voltage control mode. The design modelled and simulated by PSIM. PV dc input was set variation according to the irradiation value (W/m2) and the output connected to a load that has rated voltage of 220 Vac and 3.4 A of nominal current. The results show that in the irradiation variation 600-1500 W/m2, the inverter was able to maintain the output voltage of 220 Vac ± 0.91%, 50 Hz which is still in the voltage range based on standard. The efficiency produced by DC-AC inverter 97.7 % at 600 W/m2 and 83.6 % at 1500 W/m2.

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“…Total harmonic distortion (THD) is a critical factor affecting the quality of current and voltage waveforms in modular multilevel converters (MMCs). THD is precisely defined as the ratio of the sum of the powers of all harmonic components to the power of the fundamental frequency [20,21]. It serves as a vital indicator widely employed to evaluate the output power quality of MMCs [21,22].…”

Section: Introductionmentioning

confidence: 99%

Analyzing Impacts of Amplitude Modulation Index on Performance Characteristics of Three-Phase Nine-Level Modular Multilevel Converters

Alhaj Omar,

Pamuk

2023

Electronics

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Modular multilevel converters (MMCs) represent the forefront of power converter technology, with wide-ranging applications across diverse industries. Over recent decades, substantial research and development efforts have been dedicated to enhancing MMCs’ performance. A significant challenge in power conversion processes is the presence of total harmonic distortion (THD) in output waveforms, which can have adverse effects on electrical equipment. In response, extensive studies have been conducted to address THD-related challenges by refining the control and operation of MMCs. This study investigates the effect of the amplitude modulation index (Ma) on the total harmonic distortion (THD) in nine-level MMC output waves. For this, a standard three-phase and nine-level MMC model was built and simulated in MATLAB/ Simulink environment, and the Ma value was shifted between 0.1 and 1.5. The output current and voltage waves were analyzed, and the optimal limits for the Ma values yielding the lowest THD values were determined. The simulation outcomes reveal a crucial Ma range between 0.6 and 1.2, where THD is significantly minimized. Ma values below 0.6 introduce significant harmonic distortion in the voltage waves, while values surpassing 1.2 lead to appreciable harmonic distortion in the current wave. This study contributes valuable insights for engineers and researchers and aids in the refinement of MMC control strategies and the mitigation of THD-related challenges in power systems.

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The Effect of Amplitude Modulation Index and Frequency Modulation Index on Total Harmonic Distortion in 1-Phase Inverter

Cited by 5 publications

References 3 publications

Selection Method of Modulation Index and Frequency ratio for Getting the SPWM Minimum Harmonic of Single Phase Inverter

Selection Method of Modulation Index and Frequency ratio for Getting the SPWM Minimum Harmonic of Single Phase Inverter

Design of constant output voltage DC-AC inverter for batteryless solar PV system

Analyzing Impacts of Amplitude Modulation Index on Performance Characteristics of Three-Phase Nine-Level Modular Multilevel Converters

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