Decoupled Control Strategy of Grid Interactive Inverter System with Optimal LCL Filter Design
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B. Chitti Babu
,
Anup Anurag
Abstract
This article presents a control strategy for a three-phase grid interactive voltage source inverter that links a renewable energy source to the utility grid through a LCL-type filter. An optimized LCL-type filter has been designed and modeled so as to reduce the current harmonics in the grid, considering the conduction and switching losses at constant modulation index (Ma). The control strategy adopted here decouples the active and reactive power loops, thus achieving desirable performance with independent control of active and reactive power injected into the grid. The startup transients can also be controlled by the implementation of this proposed control strategy: in addition to this, optimal LCL filter with lesser conduction and switching copper losses as well as core losses. A trade-off has been made between the total losses in the LCL filter and the Total Harmonic Distortion (THD%) of the grid current, and the filter inductor has been designed accordingly. In order to study the dynamic performance of the system and to confirm the analytical results, the models are simulated in the MATLAB/Simulink environment, and the results are analyzed.
References
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©2013 by Walter de Gruyter Berlin / Boston
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Articles in the same Issue
- Masthead
- Masthead
- Research Article
- A Solid-State Fault Current Limiting Device for VSC-HVDC Systems
- Type-1 and Type-2 Fuzzy Logic and Sliding-Mode Based Speed Control of Direct Torque and Flux Control Induction Motor Drives – A Comparative Study
- Impact Assessment of V2G on the Power Loss of Unbalanced Radial Distribution Network
- Optimal Operation Method of Smart House by Controllable Loads based on Smart Grid Topology
- Modelling Framework and the Quantitative Analysis of Distributed Energy Resources in Future Distribution Networks
- Anti-islanding Protection of Distributed Generation Using Rate of Change of Impedance
- Impact of V2G on Distribution Feeder: A Power Loss Reduction Approach
- Voltage THD Improvement for an Outer Rotor Permanent Magnet Synchronous Machine
- Fault Location Methods for Ungrounded Distribution Systems Using Local Measurements
- Decoupled Control Strategy of Grid Interactive Inverter System with Optimal LCL Filter Design
- PSS with SVC Damping Controllers Coordinated Design and Real-Time Implementation in Multi-Machine Power System Using Advanced Adaptive PSO
- Fault Current Distribution and Pole Earth Potential Rise (EPR) Under Substation Fault
- Review
- A Statistical Survey of the UK Residential Sector Electrical Loads
