Comparison of different techniques for selective harmonic eliminationpwmin inverters — A review

Ghosh, Gautam; Rathi, Abhilasha V.; Chowdhury, Angikar Roy; Dutta, Pritha; Preeti, Sweta; Shri, Divita; Krishna, Shankara Narayanan; Das, Aditi; Saha, P. K.; Singh, N. M. Spencer Prathap

doi:10.1109/iemcon.2017.8117228

Cited by 6 publications

(3 citation statements)

References 17 publications

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“…Space vector, sinusoidal, selective harmonic elimination pulse width modulation (SV-, S-, SHE-PWM), and basic fundamental frequency switching are a few of the controlled modulation techniques [16] employed by power converters to produce a multilevel output, which is in the sinusoidal shape of voltage waveforms. Numerous different control techniques are stated in [17].…”

Section: Modulation Techniquementioning

confidence: 99%

A Single Source Self-Balanced Boost MLI with Reduced Part Count for EV Applications

et al. 2023

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As the use of inductor-based topologies demands a large amount of space, capacitor-based topologies have garnered attention. Electric Vehicles (EVs) are usually equipped with two-level inverters, which require separate control strategies for each level and synchronizing the strategies increases the complexity of operation and makes them unreliable. Therefore, a single-stage converter with boost and conversion abilities with better power quality at optimal component count and efficiency is needed. A novel capacitor-based boost multilevel inverter (CB-MLI) topology is proposed in this paper as it is found suitable for EV and HEV applications. It is capable of generating an eleven-level waveform with only eleven switches, three capacitors, and a single isolated source. The self-balancing property of the capacitors makes the topology one of a kind. A constant carrier PWM-based control strategy is utilized to switch the IGBTs. Testing results from hardware setup confirm the proposed capacitor-based CB-MLI topology operating modes and potentiality. Lastly, by highlighting the proposed and existing MLI circuits, the benefits of the recommended configuration are outlined by component count and total cost. Additionally, it is a simplified design that needs fewer footprint areas and space.

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Section: Modulation Techniquementioning

confidence: 99%

A Single Source Self-Balanced Boost MLI with Reduced Part Count for EV Applications

et al. 2023

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“…Basic fundamental frequency switching, sinusoidal PWM, selective harmonic elimination pulse width modulation (SHE-PWM), and space vector PWM (SV-PWM) are some of the modulation schemes 21 used by converter topologies to provide a sinusoidal staircase output voltage waveform, and some of the other modulation schemes mentioned in previous studies. 22,23 Later to create gate pulses for switching devices, a PD-SPWM switching approach was used.…”

Section: Power Loss Calculationmentioning

confidence: 99%

A capacitor based single source MLI with natural balancing and less component for EV/HEV application

Suresh

Naik

Rao

et al. 2022

Circuit Theory & Apps

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Summary Due to their remarkable performance, capacitor‐based inverters have recently gained attention. Hence, a new capacitor‐based multilevel inverter is presented in this paper for electric and hybrid electric vehicle (EV and HEV) applications. EV systems are quite well for their use of two‐level inverters; however, the generated load voltage comprises substantial undesirable harmonic content. It is regarded as one of the most efficient methods since replacing a two‐level inverter with a multilevel inverter improves the power quality despite significantly reducing total harmonic distortion. Therefore, the recommended filter dimension will also be minimized. A flurry of reliability concerns has arisen due to the increased number of devices, circuit complexity, and stress on the circuit devices. A nine‐level voltage waveform is created with only ten IGBTs, a DC‐Source, and two capacitors. In the proposed nine‐level inverter, the capacitor voltage is balanced utilizing a simple control approach to regulate the flying capacitor (FC) voltages actively. Here described a simple logic gate‐based pulse‐width modulation technique that ensures capacitor power balancing. The proposed inverter operation and capability are validated by experimental results derived from a laboratory prototype. Finally, by contrasting the new and standard inverter topologies, the virtues of the suggested architecture by the number of devices and price of the equipment are highlighted, and it is a simpler structure that requires less space and footprint area.

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“…The optimized solution of transcendental equations can be derived using different suitable methods such as numerical methods like Neuton-Raphson (NR), but the issue is to identify the suitable initial value [9]. Evolutionary algorithms like particle swarm optimization (PSO) [10], bee algorithm (BA), colonial competitive algorithms (CCA), generalized pattern search (GPS), genetic algorithm (GA) [11]- [14]. Firefly based algorithm (FA) serves this purpose but implementation complexity and computation time is the major concern for these.…”

Section: Introductionmentioning

confidence: 99%

CSA-based harmonic elimination controlled reduced switch multilevel inverter for standalone PV system

Sen,

Sahoo,

Jha

2024

IJPEDS

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A standalone photovoltaic (PV) system has emerged as a clean energy solution for application in remote areas. To establish such a system a suitable converter is required for voltage boosting as well as to produce high-quality output as required by the load. To achieve this, multilevel inverters (MLIs) are the proven substitute in PV systems. A conventional MLI uses multiple sources and switches that increase the cost and complexity. To provide a complete stand-alone system solution that addresses this issue, reduced component switched capacitor (SC) based seven-level MLI is disclosed in this paper. A new crow search algorithm (CSA) based selective harmonic elimination (SHE) method is employed to estimate the switching angles. The dominant harmonic orders are removed from the 7-level SC-MLI output while the desired firing angles for the switches are evaluated. Using only seven switches, the circuit boosts the voltage to 1.5 times with the aid of self-balanced capacitors. Therefore, the circuit does not require an additional control circuit for voltage balancing. The overall system is designed in MATLAB/Simulink environment to test under different operating conditions. An experimental prototype of the 7-level SCMLI is also designed to validate the CSA-based SHE control and MLI performance in real time.

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Comparison of different techniques for selective harmonic eliminationpwmin inverters — A review

Cited by 6 publications

References 17 publications

A Single Source Self-Balanced Boost MLI with Reduced Part Count for EV Applications

A Single Source Self-Balanced Boost MLI with Reduced Part Count for EV Applications

A capacitor based single source MLI with natural balancing and less component for EV/HEV application

CSA-based harmonic elimination controlled reduced switch multilevel inverter for standalone PV system

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