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Dive into the research topics where Yakov L. Familiant is active.

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Featured researches published by Yakov L. Familiant.


IEEE Transactions on Smart Grid | 2016

A New Framework for Microgrid Management: Virtual Droop Control

A. Solanki; Adel Nasiri; Vijay Bhavaraju; Yakov L. Familiant; Qiang Fu

Microgrids can provide the most promising means of integrating large amounts of distributed sources into the power grid and can supply reliable power to critical loads. A generalized control framework is required to regulate microgrid voltage and frequency, maintain system stability, maintain power quality, and manage distributed generations. A microgrid control framework for power management and voltage and frequency regulation is proposed in this paper. The proposed method, virtual droop control, is described and formulated and compared with the existing natural droop control technique. Unit commitment algorithm has also been implemented to manage nonrenewable sources to improve the system efficiency. The proposed technique operates the microgrid at a constant voltage and frequency, and uses communication for power sharing. It also provides the means to operate the microgrid in case of lost communication and sabotage on communication network. The proposed method has been applied to Fort Sill microgrid and the modeling results have been compared with natural droop control technique. A laboratory setup, which consists of a 100 kW natural gas generator, 56 kWh Li-ion based battery with 250 kW inverter, and 100 kW load bank, has been built and tested. The results of the setup have been provided, which confirms the viability of the proposed technique.


IEEE Transactions on Industrial Electronics | 2016

Simple Time Averaging Current Quality Evaluation of a Single-Phase Multilevel PWM Inverter

Boris Reznikov; Milan Srndovic; Yakov L. Familiant; Gabriele Grandi; Alex Ruderman

This paper addresses theoretical calculation of a single-phase multilevel pulsewidth modulation (PWM) inverter current total harmonic distortion (THD). Analytical approach introduced in late 1980s for a two-level inverter is generalized for an arbitrary level count for a single-phase inverter. Although the obtained closed-form piecewise analytical solutions assume (infinitely) large ratio of switching and fundamental frequencies and pure inductive load, they are practically very accurate for the ratios of (apparent) switching and fundamental frequencies larger than 25-30 and inductance-dominated loads. Along with strict mathematical solutions, simple accurate Bessel function approximation and hyperbolic average trend one are suggested. The formulas clearly reveal a single-phase PWM inverter current THD dependence on modulation index for an arbitrary voltage level count and are easily modified to cover grid-connected cases.


international conference on performance engineering | 2015

Minimization of voltage and current total harmonic distortion for a single-phase multilevel inverter staircase modulation

Kenessary Koishybay; Yakov L. Familiant; Alex Ruderman

The paper addresses optimal voltage and current quality (minimal Total Harmonic Distortion - THD) for a singlephase multilevel inverter staircase modulation. The previous research mostly addressed optimal THD problem in frequency domain accounting for a limited harmonics count. The novelty of this research is that voltage and current minimal THD problems are formulated in time domain as a constrained optimization ones in order to find theoretically optimal switching angles accounting for all switching harmonics. The optimal switching angles and respective minimal THD values are obtained for different inverter level counts and the whole fundamental voltage (modulation index) range. Suggested are smooth ripple-free approximations for accurate voltage and current THD for arbitrary level counts and modulation indices. While these simple hyperbolic formulas accurately approximate the average trend, local maxima and minima of voltage and current THD may be considered on separate. In fact, the obtained current THD is frequency weighted THD that assumes inductance dominated RL-load. For grid-connected applications, normalized current fundamental harmonic is smaller than voltage modulation index and current THD is essentially larger than frequency weighted voltage one.


international conference on environment and electrical engineering | 2015

Hybrid model predictive control for optimal energy management of a smart house

Albina Khakimova; Akmaral Shamshimova; Dana Sharipova; Aliya Kusatayeva; Viktor Ten; Alberto Bemporad; Yakov L. Familiant; Almas Shintemirov; Matteo Rubagotti

This paper describes the modeling and control of heat and electricity flows in a smart house equipped with a solar heating system, PV panels, and lead-acid batteries for energy storage. The goal is to minimize electricity costs, making best use of renewable sources of heat and electricity. The system model is obtained via system identification from experimental data as a discrete-time hybrid system to capture the main thermal and electrical dynamics, the on-off activation of pumps, heating coil, the connection to the grid, and various operating constraints, including logic constraints and limits on system variables. Based on the obtained model, we derive a hybrid model predictive control (MPC) strategy. The controller is able to track the desired temperature and minimize costs for consuming electricity from the grid, while respecting all the prescribed constraints. Simulation results testify the effectiveness and feasibility of the approach.


international power electronics and motion control conference | 2016

Simultaneous total harmonic distortion minimization and selective harmonic elimination: Combining the best of both worlds

Kenessary Koishybay; Tohid Alizadeh; Yakov L. Familiant; Alex Ruderman

Power electronic converters for medium and high power / voltage applications employ low frequency fundamental switching that is dictated by the necessity to minimize switching losses. There are two major approaches to switching angles determination - Total Harmonic Distortion (THD) minimization and Selective Harmonic Elimination (SHE). For the THD minimization, the switching angles are found so as to assure minimum THD without taking any care of frequency spectrum. For the SHE approach, all degrees of freedom due to available amount of switching angles are spent on elimination of certain low order harmonics. The basic idea of the suggested combined approach consists in spending some degrees of freedom on certain harmonics elimination and using the rest for minimizing THD. This generalized problem formulation includes classic minimal THD and SHE problems as special cases.


international power electronics and motion control conference | 2016

Time domain optimization of voltage and current THD for a three-phase cascaded H-Bridge inverter

Rassul Bairamkulov; Alex Ruderman; Yakov L. Familiant

This paper addresses optimal voltage and current quality in the sense of minimal Total Harmonic Distortion (THD) for a three-phase cascaded H-bridge inverter with a fundamental switching staircase modulation. THD minimization problems are formulated in time domain as constraint optimization ones in order to find theoretically optimal switching angles accounting for all switching harmonics. Provided are numerically obtained optimal switching angles and minimal voltage and current THD values for the overall output voltage dynamic range for a basic converter with two H-bridge modules per phase. While optimal three-phase inverter voltage THD solutions were already reported in literature, optimal current THD ones are supposed to be systematically presented for the first time.


IEEE Transactions on Industry Applications | 2016

Discussion of “A Variable Switching Frequency PWM Technique for Induction Motor Drive to Spread Acoustic Noise Spectrum With Reduced Current Ripple”

Yakov L. Familiant; Alex Ruderman

Variable frequency modulations for motor drives that include deterministic, probabilistic (random or randomized), and chaotic pulse width modulation (PWM) are aimed at acoustic noise frequency spectrum spreading [1]-[4]. The discussed paper [1] suggests a deterministic variable frequency PWM method for induction motor drives that is about a deterministic variation of a switching period (subcycle) of a conventional PWM.


2015 International Conference on Electrical Drives and Power Electronics (EDPE) | 2015

Asymptotic time domain evaluation of a single-phase multilevel PWM inverter current quality

Boris Reznikov; Milan Srndovic; Gabriele Grandi; Bexultan Rakhim; Yakov L. Familiant; Alex Ruderman

This paper addresses theoretical calculation of a single-phase multilevel PWM inverter current Total Harmonic Distortion (THD). Analytical approach introduced in late 1980s for a 2-level inverter is generalized for an arbitrary level count for a single-phase inverter. Though the obtained closed-form piece-wise analytical solutions assume (infinitely) large ratio of switching and fundamental frequencies and pure inductive load, they are practically very accurate for the ratios of (apparent) switching and fundamental frequencies larger than 25-30 and inductance dominated loads. Along with strict mathematical solutions suggested are simple accurate Bessel function approximation and hyperbolic average trend one. The formulas clearly reveal a single-phase PWM inverter current THD dependence on modulation index for an arbitrary voltage level count and are easily modified to cover grid-connected cases.


IEEE Transactions on Industry Applications | 2018

Simultaneous Selective Harmonic Elimination and THD Minimization for a Single-Phase Multilevel Inverter With Staircase Modulation

Milan Srndovic; Aidar Zhetessov; Tohid Alizadeh; Yakov L. Familiant; Gabriele Grandi; Alex Ruderman

Power electronic converters for medium- and high-power/voltage applications employ low-frequency fundamental switching frequencies and, therefore, minimize switching losses. There are two main control techniques of switching angle estimation; total harmonic distortion (THD) minimization and selective harmonic elimination (SHE). In case of the first control technique, the switching angles are found based on THD minimization without being specifically focused on eliminating some exact harmonics. For the SHE control technique, all degrees of freedom, due to available number of switching angles, is used for the elimination of certain low-order harmonics. The basic idea of combining those two control techniques consists of using some degrees of freedom for eliminating certain harmonics and using the others for minimizing the remaining THD content. This generalized problem formulation includes classic minimal THD and SHE problems as special cases. Theoretical developments are verified by the set of experimental cases for the voltage and current THDs selecting characteristic working points over the modulation index range.


international power electronics and motion control conference | 2016

Calculation of current total harmonic distortion for a single-phase multilevel inverter with LCL-Filter

Ramazan Abdikarimuly; Yakov L. Familiant; Alex Ruderman; Boris Reznikov

This paper addresses calculation of current Total Harmonic Distortion (THD) for a single-phase multilevel PWM inverter with LCL-filter. Analytical approach introduced in late 1980s for a 2-level inverter with inductance dominated load is generalized for a single-phase multilevel inverter with an arbitrary number of voltage levels accounting for the smoothing effect of LCL-filter. Though the obtained closed-form analytical solutions initially assume (infinitely) large ratio of switching and fundamental frequencies, they are practically accurate for the ratios of (apparent) switching and fundamental frequencies larger than 25-30. Also suggested are simple accurate Bessel function approximations. The formulas clearly reveal a single-phase PWM inverter current THD dependence on LCL-filter parameters and modulation index for an arbitrary level count and are easily modified to cover a grid-connected case.

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