Renewable energy resources (RES) are being increasingly connected in distribution systems utilizing power electronic converters. This paper presents a novel control strategy for achieving maximum benefits from these grid-interfacing inverters when installed 3-phase 4-wire systems. The inverter is controlled to perform as multi-function device by incorporating active filter functionality. can thus be utilized as: 1) converter inject generated RES the grid, and 2) shunt APF compensate current...

Solid-state switch mode AC-DC converters having high-frequency transformer isolation are developed in buck, boost, and buck-boost configurations with improved power quality terms of reduced total harmonic distortion (THD) input current, power-factor correction (PFC) at AC mains precisely regulated isolated DC output voltage feeding to loads from few Watts several kW. This paper presents a comprehensive study on state art factor corrected single-phase configurations, control strategies,...

This paper deals with a modified technique for the recognition of single stage and multiple power quality (PQ) disturbances. An algorithm based on Stockwell's transform artificial neural network-based classifier rule-based decision tree is proposed in this paper. The analysis classification PQ disturbances consisting both events variations such as sag, swell, interruption, harmonics, transients, notch, spike, flicker are presented. Moreover, also applied harmonics flicker, interruption. A...

This paper introduces a new concept of optimal utilization unified power quality conditioner (UPQC). The series inverter UPQC is controlled to perform simultaneous 1) voltage sag/swell compensation and 2) load reactive sharing with the shunt inverter. active control approach used compensate integrated theory angle (PAC) coordinate between two inverters. Since simultaneously delivers powers, this named as UPQC-S (S for complex power). A detailed mathematical analysis, extend PAC UPQC-S,...

This paper analyzes the effects of rotor position error in performance field-oriented-controlled permanent-magnet synchronous machine (PMSM) drives intended for electric vehicle (EV) traction applications. A special focus is given to torque ripple generated along characteristic trajectories different operating regions PMSM. An extended and generalized model produced by PMSM as a function analytically deduced. infinite-speed interior-(I)PMSM drive finite-speed surface-mounted (SM)-PMSM are...

In this paper, different Distribution Static Compensators (DSTATCOMs) topologies, state of the art, their performance, design considerations, future developments, and potential applications are investigated for power quality improvement. These DSTATCOMs three-phase three-wire systems four-wire developed installed in distribution system many functions, such as reactive compensation, harmonics elimination, load balancing, neutral current compensation. This paper is aimed to explore a broad...

This paper deals with an implementation of a new control algorithm for three-phase shunt active filter to regulate load terminal voltage, eliminate harmonics, correct supply power-factor, and balance the nonlinear unbalanced loads. A insulated gate bipolar transistor (IGBT) based current controlled voltage source inverter (CC-VSI) DC bus capacitor is used as (AF). The AF uses two closed loop PI controllers. voltages are feedback signals in provides reference currents. carrier wave pulse...

This paper deals with a new control scheme for parallel 3-phase active filter to eliminate harmonics and compensate the reactive power of nonlinear loads. A voltage source inverter bridge DC bus capacitor is used as an (AF). hysteresis based carrierless PWM current employed derive switching signals AF. Source reference currents are derived using load currents, voltage. The command AF currents. diode rectifier capacitive loading load. found effective meet IEEE-519 standard recommendations on level.

Solid-state controllers are widely used to convert AC power for feeding number of electrical loads such as adjustable speed drives, furnaces, supplies etc. Some these behave nonlinear because they draw nonsinusoidal current from the mains. Filter technology improving quality has matured a reasonable level. Moreover, hybrid filters considered one best options considerations. A comprehensive review configurations is given: their control approaches, state art, design considerations, selection...

The single-phase p-q theory for the purpose of active power filtering in case loads is dealt with here. A simple modification proposed to develop a generalised that can be utilised under condition distorted utility voltage. systematic study presented by realising both direct and indirect current control techniques. simulation as well digital signal processor (DSP) (DS1104 dSPACE) based experimental results are discussed. developed shunt filter (APF) prototype tested different operating...

This paper presents the comparison of three different strategies for control a doubly fed induction generator (DFIG) in wind energy conversion systems (WECS). Three most widespread and well-performing approaches are implemented an experimental setup based on digital signal processor (DSP), namely, vector control, direct torque power control. Said methods reviewed their performances analyzed compared basis simulations results. The qualitative quantitative results thus obtained likely to be...

This paper presents a novel philosophy to compensate the load-reactive power demand through three-phase unified quality conditioner (UPQC). Most of UPQC-based applications show dependency on shunt inverter for compensation, whereas series is always looked as controlled voltage source handle all voltage-related problems. proposes new functionality UPQC in which both and APFs supply demand. feature not only helps share demand, but also reduce APF rating, hence, overall cost UPQC. results...

The precise information of permanent-magnet synchronous generator (PMSG) rotor position and speed is essentially required to operate it on maximum power points. This paper presents an adaptive network-based fuzzy inference system (ANFIS) for estimation PMSG, where ANFIS-based model reference continuously tuned with actual PMSG neutralize the effect parameter variations such as stator resistance, inductance, torque constant. ANFIS-tuned estimator able estimate accurately over a wide range...

The protection of the sensitive unbalanced nonlinear loads from sag/swell, distortion, and unbalance in supply voltage is achieved economically using dynamic restorer (DVR). A simple generalized algorithm based on basic synchronous-reference-frame theory has been developed for generation instantaneous reference compensating voltages controlling a DVR. This novel makes use fundamental positive-sequence phase extracted by sensing only two and/or distorted line voltages. general enough to...

This paper presents a novel structure for three-phase four-wire (3P4W) distribution system utilizing unified power quality conditioner (UPQC). The 3P4W is realized from three-wire where the neutral of series transformer used in part UPQC considered as fourth wire system. A new control strategy to balance unbalanced load currents also presented this paper. current that may flow toward point compensated by using four-leg voltage source inverter topology shunt part. Thus, will be at virtual...

In this paper, different voltage injection schemes for dynamic restorers (DVRs) are analyzed with particular focus on a new method used to minimize the rating of source converter (VSC) in DVR. A control technique is proposed capacitor-supported The DVR demonstrated reduced-rating VSC. reference load estimated using unit vectors. synchronous frame theory conversion voltages from rotating vectors stationary frame. compensation sag, swell, and harmonics

The power electronics plays an important role in the reliable operation of a modern wind energy conversion system (WECS). This study aims at grid interconnection permanent magnet synchronous generator (PMSG)-based turbine with harmonics and reactive compensation capability point common coupling (PCC). proposed consists two back-to-back connected converters dc-link. generator-side converter is used to achieve maximum tracking (MPPT). grid-side actively controlled feed generated as well supply...

Power electronics plays an important role in controlling the grid-connected renewable energy sources. This paper presents a novel adaptive neuro-fuzzy control approach for interfacing inverter. The main objective is to achieve smooth bidirectional power flow and nonlinear unbalanced load compensation simultaneously, where conventional proportional-integral controller may fail due rapid change dynamics of highly system. combined capability handling uncertainties learning from processes proved...

This paper deals with control of a solar-photovoltaic (PV) power-generating system interfaced the grid. A sliding mode approach is used for achieving maximum power tracking solar-PV array. The Lyapunov function-based designed and modeled dc–ac inverter to serve functions an active injection grid, balanced grid currents at unity factor load harmonics compensation. proposed approaches eliminate need adjustment parameters under changing loads generation scenario. effectiveness strategies...

This paper presents a maximum power point tracking (MPPT) method for photovoltaic (PV) systems with reduced hardware setup. It is realized by calculating the instantaneous conductance and junction of array. The first one done using array voltage current, whereas second one, which function estimated an adaptive neuro-fuzzy (ANFIS) solar cell model. Knowing difficulties measuring radiation temperature, since those require two extra sensors that will increase circuitry measurement noise,...

A control algorithm for a standalone solar photovoltaic (PV)-diesel-battery hybrid system is implemented in this paper. The proposed deals with the intermittent nature of energy generated by PV array and it also provides power quality improvement. integrated through dc–dc boost converter controlled using maximum point tracking to obtain under varying operating conditions. battery storage (BESS) into diesel engine generator set coordinated load management flow within system. admittance-based...