A Systematic Approach via IIR Filters for Enhancing the Robustness of LCL-Type Shunt Active Power Filters to Grid Impedance
Objective
Main objective of this project to enhance the robustness of the grid impedance, automatically adjusted the components of PCC voltage.
Abstract
In this project, a Dual-Loop Current Control method (grid current loop and inverter-side current loop) is proposed for digitally controlled LCL-type Shunt Active Power Filters (APFs), due to its inherent active damping effect for LCL resonance. However, the damping region is only up to one sixth of the sampling frequency (fs/6), which leads to a limited system robustness against grid impedance variation at the Point of Common Coupling (PCC). Hence, in this study, the robustness of such control is discussed through mathematic derivations and diagram analysis, which reveals that both the system delays and PCC voltage feed forward affect the system robustness.
On the basis of theoretical analysis, a systematic approach Via Infinite Impulse Response (IIR) filters has been proposed for enhancing the robustness to grid impedance. Thereof, a second-order IIR filter-based inverter-side current feedback is proposed to widen the damping region up to almost the Nyquist frequency (fs/2), while a band-stop IIR filter based PCC voltage feed forward is proposed to achieve the superior stability margins under a large grid impedance in comparison with unit feed forward. The performance of the proposed method evaluated the results using Matlab/Simulink software.
Keywords: Active power filter, dual-loop current control, damping region, PCC voltage feedforward, robustness.
NOTE: Without the concern of our team, please don't submit to the college. This Abstract varies based on student requirements.
Block Diagram
Specifications
Software Configuration:
Operating System : Windows 7/8/10
Application Software : Matlab/Simulink
Hardware Configuration:
RAM : 8 GB / 4 GB (Min)
Processor : I3 / I5(Mostly prefer)
Learning Outcomes
- Introduction to Matlab/Simulink
- What is EISPACK & LINPACK
- How to start with MATLAB
- About Matlab language
- About tools & libraries
- Application of Matlab/Simulink
- About Matlab desktop
- Features of Matlab/Simulink
- Basics on Matlab/Simulink
- Types of transformation
- Types of PWM
- Introduction to converters
- Introduction to PLL
- Introduction to types of filters
- Introduction to micro grid
- Introduction to PI controllers
- Introduction to IGBT
- Introduction to steady state and dynamic state
- Introduction to active power filters
- Introduction to infinite impulse response
- Introduction to types of loads
- Introduction to feedback control
- Introduction to inverter side current loop
- Introduction to compensation techniques
- Introduction to delay compensation
- Introduction to dual loop current control method
- Project Development Skills:
- Problem analyzing skills
- Problem solving skills
- Creativity and imaginary skills
- Programming skills
- Deployment
- Testing skills
- Debugging skills
- Project presentation skills
- Thesis writing skills
Paper Publishing
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