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A data-driven controller switching algorithm used for adaptive control is investigated. A new cost-detectable cost function based on fading memory data is constructed so as to reduce the influence of older data. A new controller switching algorithm is designed to guarantee that switching stops and that the closed-loop system is stable. Theoretical analyses and simulations are presented to show that,...
The operation of electric arc furnaces (EAFs) leads to drastic and random characteristics which may cause considerable power quality problems. In this study, the goal is to detect the major voltage fluctuation source that exists in an electric utility distribution substation which serves several steel-making customers. Because of the nonlinear behaviors of the EAF loads during operations, serious...
Applications of solid-state converters and inverters for adjustable speed drives (ASDs) are popular in industrial systems and lead to a significant amount of harmonic and interharmonic currents being injected into the connected system. This paper presents an accurate analytical approach for the assessment of the harmonic and interharmonic currents generated by the voltage-source inverter-fed ASDs...
This paper presents simulation results by using Matlab/Simulink for the assessment of harmonic and interharmonic currents generated by the voltage source inverter (VSI)-fed adjustable speed drives (ASDs). In the simulation, the commutation effects caused by source impedance and non-ideal supply voltages are included. The front-end converter, dc link, pulse-width modulated (PWM) inverter, and the induction...
High switching transient yields a significant impact on supply noise for memory I/O interface and neighbor functional blocks. Combined with the indexes of PSRR, STEP and STOV, A novel power index, CCNP, could be introduced and demonstrated effectively for predicting supply noise margin. By means of the proposed methodology and power index, a fast and accurately simulation based prediction will be...
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