Review of Multilevel Inverters and Their Control Techniques

Tashiwa, Ibrahim Emmanuel; Dung, Gyang Davon; Adole, Benson Stephen

doi:10.24018/ejers.2020.5.6.1707

Cited by 6 publications

(3 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Due to these advantages, numerous configurations of MLIs are being developed which may fall under one of the three basic topologies, i.e., flying-capacitor (FC), neutral-point-clamped (NPC), and CHB topologies, or a few hybrids of those [7][8][9].…”

Section: Multilevel Inverter (Mli)mentioning

confidence: 99%

Closed Loop V/f Speed Control of Multilevel Inverter Fed Induction Motors Using PID and Fuzzy Logic Controllers

Konathala¹,

Mary

Mounica

et al. 2021

Proc. eng. technol. innov.

View full text Add to dashboard Cite

The Volts per Hertz (V/f) speed control method makes induction motors available to be used in variable speed applications. However, the great harmonic distortion in supply voltage is a major issue of this method. Therefore, this study focuses on decreasing the harmonic distortion in the supply to induction motors. For that, the use of thirty-one-level multilevel inverters (MLIs) is investigated. Another drawback of the V/f speed control method is the use of proportional-integral-derivative (PID) controllers as speed controllers, which are difficult to be tuned precisely. To overcome this, the use of fuzzy logic controllers is investigated. The whole model is developed and simulated in MATLAB/SIMULINK by varying two variables, i.e., reference speed and load torque, one at a time using each controller. The observations for the changes in speed, torque, stator current, and supply voltage to the induction motors are made. The system’s performance using fuzzy logic controllers is found superior.

show abstract

Section: Multilevel Inverter (Mli)mentioning

confidence: 99%

Closed Loop V/f Speed Control of Multilevel Inverter Fed Induction Motors Using PID and Fuzzy Logic Controllers

Konathala¹,

Mary

Mounica

et al. 2021

Proc. eng. technol. innov.

View full text Add to dashboard Cite

show abstract

“…In comparison with two-level inverters, multilevel inverters (MLI) have been rapidly developed by researchers due to lower total harmonic distortion (THD), lower switching frequency, the smaller size of the filter, and lower dv/dt stress on the load. They have been rapidly used in photovoltaic systems [1][2][3][4][5][6][7][8]. The MLI are classified to three main groups: neutral-point clamped (NPC) [9,10], flying capacitor (FC) [11,12] and cascaded H-bridge (CHB) topologies [13,14].…”

Section: Introductionmentioning

confidence: 99%

A New Multilevel Inverter Based on Harvest of Unused Energies for Photovoltaic Applications

Salehi

Shmasi-Nejad

Najafi

2022

IJE

View full text Add to dashboard Cite

In multilevel inverters, unused energies are created due to the asynchronous use of the input DC sources. when the input DC sources are replaced by renewable systems such as photovoltaic arrays, some of the input energies remain unused. This paper presents a new multilevel inverter topology that can harvest the unused energies and return them to another output which leads to the harvest of the maximum input energy. The harvest of maximum energy (HME) based multilevel inverter structure consists of two terminals. One is connected to AC-load and another is joined to DC-load or rechargeable batteries. Another merit of the proposed multilevel inverter is that the number of its switches is comparable to other structures where unused energies cannot be harvested. Selective harmonic elimination (SHE) has been used as the switching strategy in the proposed multilevel structure. To verify the performance of the HME-based multilevel inverter topology, the experimental results for a type seven-level inverter were performed by the TMS320F28379D DSP.

show abstract

“…The applications of multilevel inverters are fast-growing in the industrial manufacturing sector due to their numerous advantages, which include the ability of its staircase waveforms to not only establish a better harmonic profile but equally minimizes 𝑑𝑣 𝑑𝑡 ⁄ stresses, reduced common-mode voltage, small voltage stress when compared to the overall operating voltage of the semiconductor devices. It also has input current with low distortion, making it possible for a renewable energy source to be easily interfaced [19]. The torque ripples produced by the PMSM and the harmonics content of the stator current are caused by the non-ideal sinusoidal shape of the inverters.…”

Section: Introductionmentioning

confidence: 99%

Pulse Width Modulation Analysis of Five-Level Inverter- Fed Permanent Magnet Synchronous Motors for Electric Vehicle Applications

Tola

Umoh

Yahaya

2021

IJRCS

View full text Add to dashboard Cite

In recent times, intense research has been focused on the performance enhancement of permanent magnet synchronous motors (PMSM) for electric vehicle (EV) applications to reduce their torque and current ripples. Permanent magnet synchronous motors are widely used in electric vehicle systems due to their high efficiency and high torque density. To have a good dynamic and transient response, an appropriate inverter topology is required. In this paper, a five-level inverter fed PMSM for electric vehicle applications, realized via co-simulation in an electromagnetic suite environment with a reduced stator winding current of PMSM via the use of in-phase disposition (PD) pulse width modulation (PWM) techniques as the control strategy is presented. The proposed topology minimizes the total harmonic distortion (THD) in the inverter circuit and the motor fed and also improves the torque ripples and the steady-state flux when compared to conventional PWM techniques. A good dynamic response was achieved with less than 10A stator winding current, zero percent overshoot, and 0.02 second settling time synchronization. Thus, the stator currents are relatively low when compared to the conventional PWM. This topology contribution to the open problem of evolving strategies that can enhance the performance of electric drive systems used in unmanned aerial vehicles (UAV), mechatronics, and robotic systems.

show abstract

Review of Multilevel Inverters and Their Control Techniques

Cited by 6 publications

References 0 publications

Closed Loop V/f Speed Control of Multilevel Inverter Fed Induction Motors Using PID and Fuzzy Logic Controllers

Closed Loop V/f Speed Control of Multilevel Inverter Fed Induction Motors Using PID and Fuzzy Logic Controllers

A New Multilevel Inverter Based on Harvest of Unused Energies for Photovoltaic Applications

Pulse Width Modulation Analysis of Five-Level Inverter- Fed Permanent Magnet Synchronous Motors for Electric Vehicle Applications

Contact Info

Product

Resources

About