Multilevel Inverters: A survey of limitations and recommended problem-solving techniques

Mouselinos, Theodoros P.; Tatakis, Emmanuel C.

doi:10.23919/epe.2019.8914874

Cited by 3 publications

(3 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Figure 2 illustrates the operation of the inverter under ideal conditions, assuming that all power cells have equal DC voltage sources in their input DC links. There has been a significant amount of research conducted by scholars and engineers on cascaded H-bridge multilevel inverters in recent decades [15][16][17][18][19], which can be summarized into four main aspects:…”

Section: Introduction 1background and Contextmentioning

confidence: 99%

See 1 more Smart Citation

A Comprehensive Review of Compensation Control Techniques Suitable for Cascaded H-Bridge Multilevel Inverter Operation with Unequal DC Sources or Faulty Cells

Lingom,

Song-Manguelle,

Nyobe-Yome

et al. 2024

Energies

View full text Add to dashboard Cite

A cascaded H-bridge multilevel converter topology is the ultimate solution for energy conversion in various industrial applications due to its exceptional features, such as high modularity and fault-tolerant capability. However, two circumstances can lead to unbalanced operation of the inverter, potentially causing a decrease in its reliability and survivability: unequal DC voltage sources and faulty cells. In recent decades, scientists and engineers have conducted intensive research and meaningful studies to propose control solutions capable of maintaining the stable and continuous operation of the inverter under these operational concerns. Typically, each challenge is addressed separately using a distinct compensation control scheme in the existing literature. The paper aims to offer a comprehensive review of the existing compensation control schemes appropriate for CHBMIs operating under unbalanced conditions. It overviews the most popular control schemes and summarizes their usefulness in such scenarios. The theoretical foundations of each control scheme are presented and discussed, including their operating principles, implementation schemes, advantages, and disadvantages. The paper concludes with suggested future trends that require further research for CHBMIs’ continued growth and adoption in various industrial applications.

show abstract

Section: Introduction 1background and Contextmentioning

confidence: 99%

“…Energies 2024, 17, 722 3 of 18 bridge multilevel inverters in recent decades [15][16][17][18][19], which can be summarized into four main aspects:…”

Section: Introduction 1background and Contextmentioning

confidence: 99%

A Comprehensive Review of Compensation Control Techniques Suitable for Cascaded H-Bridge Multilevel Inverter Operation with Unequal DC Sources or Faulty Cells

Lingom,

Song-Manguelle,

Nyobe-Yome

et al. 2024

Energies

View full text Add to dashboard Cite

show abstract

“…Although in many UPS applications, the traditional three-phase two-level VSI is used, the multilevel inverters (MI)s, recently, are employed in UPS applications due to their many advantages. High efficiency, low THD, and small dv/dt are just some of these advantages [2]- [4]. The MI topologies are based on neutral point clamped (NPC) [4], T-type [5], [6], flying c apacitor ( FC) [ 7], and cascaded H-bridge [8].…”

Section: Introductionmentioning

confidence: 99%

Deadbeat Control of a Three-Phase T-type Inverter with Output LC Filter for UPS Applications

Bayhan

Kömürcügil

Bayram

2021

2021 IEEE 30th International Symposium on Industrial Electronics (ISIE)

View full text Add to dashboard Cite

within the medium switching frequency range (6-30 kHz) [9]. For that reason, in this study, the T-type inverter is selected as DC-AC power conversion stage in the UPS.The control techniques play a critical role so as to ensure voltage regulation of UPSs. There are a number of studies proposed in the literature to regulate the output voltage of the UPSs. Some studies proposed linear control techniques like proportional-integral controllers using pulse-width modulation (PWM) [10]-[12], predictive control [13]-[15], multiloop feedback control [11] and repetitive-based controllers [2], [16]. In most of these control techniques, the cascaded control loop (outer and inner) and the modulation stage are required in order to produce the drive signals for the inverter switches.As an alternative to the above control techniques, the deadbeat control (DBC) is used in many power electronics applications. It uses a discrete-time model of the system in the computed control law to assure the controlled variable tracks the reference values in the next switching instant [17], [18]. Simplicity is the main advantage of this control technique and, it can be easily run in digital platforms such as microcontrollers, digital signal processors, FPGAs. Apart from this advantage, the DBC technique brings several benefits such as nearly zero steady-state error, minimum rise, and settling time. These advantages make this control technique attractive for power converters. On the other hand, there are some drawbacks to the DBC technique. For example, the mismatches in the system model result in instability, whereas the delay in the digital control leads to oscillations. [19]. Fortunately, fast digital platforms are available today to facilitate the possibility of implementation.This study mainly focuses on the DBC scheme for a three-phase three-level T-type inverter with output LC filter in UPS applications. The simulation model of the T-type inverter and its control scheme are prepared and simulated in Matlab/Simulink environment. The simulation studies show that the output voltage amplitude and frequency are kept constant under various load types, including linear and nonlinear loads. This paper is divided as follows: in Section II, the mathematical model is presented for the three-phase threelevel T-type inverter connected to the load through the LC filter; in Section III, the DBC is described; in Section IV, the simulation results are presented for the proposed deadbeat

show abstract

Comparative Study of THD in Multilevel Converter Using Model Predictive Controller

Rajasekaran

Mahendar

2021

2021 International Conference on Artificial Intelligence and Smart Systems (ICAIS)

View full text Add to dashboard Cite

Multilevel Inverters: A survey of limitations and recommended problem-solving techniques

Cited by 3 publications

References 14 publications

A Comprehensive Review of Compensation Control Techniques Suitable for Cascaded H-Bridge Multilevel Inverter Operation with Unequal DC Sources or Faulty Cells

A Comprehensive Review of Compensation Control Techniques Suitable for Cascaded H-Bridge Multilevel Inverter Operation with Unequal DC Sources or Faulty Cells

Deadbeat Control of a Three-Phase T-type Inverter with Output LC Filter for UPS Applications

Comparative Study of THD in Multilevel Converter Using Model Predictive Controller

Contact Info

Product

Resources

About