Results 21 to 30 of about 523 (176)
Fast and fault‐tolerant model predictive control of MMCs under selective harmonic elimination
IET Generation, Transmission &Distribution, Volume 17, Issue 1, Page 240-251, January 2023., 2023 This paper proposes an MPC strategy to control an MMC operating with SHE while adding FT capabilities to its operation. A modification process is proposed for SHE to maintain its harmonic performance during FT operation. To complete the transition, an MPC strategy is proposed to increase the capacitor voltages of the MMC and control the circulating ...
Ardavan Mohammadhassani +1 more
wiley +1 more source
Real-Time Adaptive Selective Harmonic Elimination for Cascaded Full-Bridge Multilevel Inverter
Energies, 2022 Selective Harmonics Elimination is a high-efficiency modulation method for multilevel inverters that allows handling very high voltage applications. It eliminates the most significant harmonics and fixes the desired fundamental component.
Miguel Vivert +5 more
doaj +1 more source
Intelligent Approach for Control Techniques Based on Complex Converter Structures
International Journal of Energy Research, Volume 2023, Issue 1, 2023., 2023 Hybrid frequency control strategies are used to eliminate the problem of current inversion in multilevel cascaded asymmetrical H‐bridge inverters. Unfortunately, this technique results in unbalanced power at the inverter output. The improved hybrid PWM modulation strategy helps to regulate power balances within a reasonable range at high and low ...
Kitmo +5 more
wiley +1 more source
Monomial s-sequences arising from graph ideals
Atti della Accademia Peloritana dei Pericolanti : Classe di Scienze Fisiche, Matematiche e Naturali, 2023 Ideals arising from graphs are investigated via s-sequence theory. In particular, the notion of s-sequence for the generators of the edge ideal I(G) of an acyclic graph G is considered for describing the Groebner basis of the relation ideal J of the ...
Maurizio Imbesi, Monica La Barbiera
doaj +1 more source
A Forward Solution Algorithm of 6RUS Parallel Mechanism Based on Dual Quaternion Method
International Journal of Aerospace Engineering, Volume 2023, Issue 1, 2023., 2023 The 6RUS parallel manipulator is a highly versatile and widely used robotic mechanism with six degrees of freedom. Its intricate kinematic structure and its capability to perform complex motion tasks have garnered significant research interest in recent years.
Guangyu-yu Dong +3 more
wiley +1 more source
Rationalizing Denominators Using Gröbner Bases
Complexity, Volume 2022, Issue 1, 2022., 2022 The problem of rationalizing denominators for two types of fractions is discussed in the paper. By using the theory and algorithms of Gröbner bases, we first introduce a method to rationalize the denominators of fractions with square root and cube root, and then, for the denominators with higher radical of the general form, the problem of rationalizing
Dongmei Li +4 more
wiley +1 more source
Allocation of Optimal PMUs for Power System Observability Using PROMETHEE Approach
International Transactions on Electrical Energy Systems, Volume 2022, Issue 1, 2022., 2022 Phasor measurement units (PMUs) are becoming a vital measurement device in wide‐area monitoring, operation, and control. The allocation of PMU at each bus will make that bus directly observable. However, considering the high installation costs, it is not feasible to place PMU at each bus.
Shubhrajyoti Kundu +4 more
wiley +1 more source
International Transactions on Electrical Energy Systems, Volume 2022, Issue 1, 2022., 2022 Multilevel inverters (MLI) are becoming more common in different power applications, such as active filters, elective vehicle drives, and dc power sources. The Multi‐Group Marine Predator Algorithm (MGMPA) is introduced in this study for resolving transcendental nonlinear equations utilizing an MLI in a selective harmonic elimination (SHE) approach ...
G. Krithiga, V. Mohan, R Sitharthan
wiley +1 more source
Mathematical Problems in Engineering, Volume 2022, Issue 1, 2022., 2022 A selective harmonic elimination method of modified packed u‐cells (MPUC) inverter fed induction motor built on modified multiverse optimizer (MMVO) algorithm is put forward. The proposed method adopts the MMVO algorithm to search the optimal solution in the SHEPWM equations through the two processes of exploring the optimal solution distribution and ...
Guohua Li +3 more
wiley +1 more source
Groebner basis techniques in multidimensional multirate systems [PDF]
1995 International Conference on Acoustics, Speech, and Signal Processing, 2002 The Euclidean algorithm is a frequently used tool in the analysis of one-dimensional (1D) multirate systems. This tool is however not available for multidimensional (MD) multirate systems. The authors discus how Groebner basis techniques can fill this gap.
Ton Kalker +2 more
openaire +1 more source