Harmonic spectra of BLDC motor supplied by a solar PV multilevel inverter

Abstract

<p>The multilevel inverters have been used especially in renewable energy aspects in order to assess total harmonic distortion (THD). THD is considered to produce a good quality of current signal of BLDC motor drive. In this paper, a solar PV inveter fed brushless DC (BLDC) motor drive is discussed considering two topologies of three phase multilevel inverters. These topologies are flying capacitor and clamped diode inverters. The inverter efficiency and output power have an effectiveness on THD values. A boost dc to dc converter using incremental conductance maximum power point tracking (INC-MPPT) is implemented with a solar PV. The mathematical model of the proposed systems ares tudied via simulation using Matlab/Simulink. The simulation results of a BLDC motor based on two multilevel inverters are compared with each other considering the THD and the utilization of the dc-bus voltage, the comparition verified that the clamped diode inverter has a better harmonic spectra.still the overshoot is a little bit high in the two types of inverter that are proposed. </p>

Capacitor current analysis of a three-level neutral point clamped converter under unbalanced loading conditions

“…However, since the function represents a current, then the zone which reflects a current flow from the converter side to the load is considered only [30]. Hence, with respect to (11), only the first term is considered and is rewritten based on ( 5) and (10) to yield a general Fourier coefficient of,…”

“…Based on the available literatures, the 3L-NPC is considered as the most established multi-level inverter topologies employed in various industrial applications including renewable energy systems and medium/high voltage motor drives systems [6]- [10]. In [11] showed that the three-level diode clamped inverter (DCI) is a better option to drive a brushless DC (BLDC) motor than the cascaded H-bridge inverter in terms of total harmonic distortion (THD). In addition, the 3L-NPC can drive effectively an induction motor (IM) by reducing the THD to 50% for traction application in comparison with two level inverter [12].…”

An improved modulation technique suitable for a three level flying capacitor multilevel inverter

“…Additionally, Majdoul et al [23] employ a nine-switch inverter without clamped diodes or flying capacitors to generate different voltage levels, highlighting the superior harmonic performance of the clamped diode inverter [22], [23]. The adoption of a hybrid modulation technique is emphasized across these studies for optimal control, collectively indicating improved performance, reduced losses, and cost-effectiveness [24].…”

Comprehensive review and analysis of photovoltaic energy conversion topologies

“…Various renewable energy systems have different strengths and weaknesses. Photovoltaic (PV) systems use solar panels, wind systems employ turbines, and hydroelectric plants utilize water force for electricity [3]- [5]. Each technology varies in energy efficiency, costs, maintenance, longevity, and dependability.…”