A new multilevel inverter with reduced switch count for renewable power applications

<span lang="EN-US">This paper describes a new strategy for optimizing the switching angles of a three-phase inverter in a photovoltaic system. It presents non-traditional solutions to the problem of selective harmonic elimination (SHE) in three-phase inverter (VSI)-fed induction motor drives. The aforementioned problem was solved independently by using hybrid genetic algorithms (HGAs) and a modified Newton–Raphson method. GAs can obtain the correct solution even if the first generation is arbitrary. The solution then converges rapidly. The modified Newton–Raphson method is used to solve transcendental equations of the SHE pulses width modulation (SHEPWM) technique, which is a unique method that produces all possible solutions without assuming the initial angles. This modified technique is not complex and ensures rapid convergence to the solution. A real-time experimental verification of the SHEPWM technique was performed in the OP5600 RT-Lab simulator. The results obtained show that the proposed SHEPWM algorithm controls the fundamental voltage and effectively eliminates the desired harmonics, and that the evolution of the signal quality increases according to the modulation index. For M=1.1 the SHE-PWM gives the best result: a current THD of 5% for a switching frequency of 1150 Hz.</span>

Section: Materials and Methods 21 Photovoltaic Inverter Topologymentioning

confidence: 99%

SHEPWM in three-phase voltage source inverters by modified Newton–Raphson

Bousmaha

Bechekir

Abdeslam

et al. 2023

“…A wind turbine changes over wind power into mechanical force, which then, at that point initiates a generator to produce electricity. The mechanical force of delivered by the wind turbine is given by [31], Where 𝜌 the density of wind (kg/m3), R is the radius (m) of the wind-blown area, V is wind speed (m/s), 𝐶 𝑝 is the turbine power coefficient [32]. Permanent magnet synchronous generator: with the continuation of electricity, the use of PMSGs has become a way of bending over large age structures of wind power.…”

Section: Methodsmentioning

confidence: 99%

Harnessing wind and solar PV system to build hybrid power system

Saswat

Patra

Mishra

et al. 2021

Self Cite

Electricity is the most important consideration for individual needs. Natural crossover power architecture using photovoltaic and wind is presented in this study, together with a Cuk direct current-direct current (DC-DC) converter, third phase inverter, and an inductors capacitors (LC) filter. Due to its natural disposal and availability in India, wind power and photovoltaics are ideal for the hybrid system. Hybrid power structures, on the other hand, reduce the risk of damage to equipment in sustainable stock storage since they have a higher electrical output. MATLAB Simulink was used to demonstrate this hybrid application. Before connecting the entire DC voltage frame with the main lattice of the power frame, blocks such as the wind model, PV model, Cuk converter, inverter, and LC channel are built individually. Information limitations for participating in varying levels of irradiance and variations in wind speed. The results show that the hybrid system has a considerably more reliable standard in terms of energy efficiency than an independent framework. Furthermore, the hybrid system's Cuk DC-DC converter, three-phase standard-based inverter, and LC channel can minimise power switching power.

“…However, the presented topology utilizes more number of switches and sources. Modified hybrid multilevel PWM are presented in [25]. However, it necessitates special setup to develop the PWM signal.…”

Section: Introductionmentioning

confidence: 99%

A hybrid reference pulse width modulation technique for binary source multilevel inverter

Vijayakumar¹,

Kumar²,

Prabaharan

2022

The article presents a seven-level reduced switch asymmetrical multilevel inverter with two different methods of pulse width modulation (PWM) techniques. Phase disposition (PD) PWM and hybrid variable-frequency phase disposition PWM (HVFPD-PWM) are the two different PWM methods for making the quality of output voltage waveform. In the first method, the unipolar sine reference with triangular carriers is used. In the second method, the hybrid unipolar reference (sinusoidal with trapezoidal) is proposed with variable frequency carriers to generate the switching pulses for asymmetric multilevel inverter (MLI). The main objective of this proposed method is to reduce the total harmonic distortion in the output voltage waveforms. A comprehensive comparison of the proposed HVFPD-PWM and the conventional PD-PWM with asymmetrical seven-level inverter is presented to show the enriched performances of the proposed method. The performance and viability of the suggested PWM are evaluated through simulation and experimental results using an asymmetrical seven-level inverter. The total harmonic distortion for the proposed PWM method (16.95%) is significantly reduced as compared with the conventional PWM method (18.01%) at the modulation index of one.