An LCL filter-based grid-interfaced three-phase voltage source inverter: performance evaluation and stability anaylsis

H. Azani, A. Massoud, L. Benbrahim, B. W. Williams, D. Holliday

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

Power converters in grid connection applications commonly employ Sinusoidal Pulse-Width Modulation (SPWM) technique. Passive filters are employed in order to attenuate the generated switching current ripples and reduces resonances between the grid and the inverter. The first-order (L), the second-order (LC), and the third-order (LCL) filters topologies are typical filters for grid connected Voltage Source Inverters (VSI). Practically, due to the system size, weight, and cost requirements, the LCL filter is the most commonly used among others for the integration of the three phase VSI into the grid. However, the control system stability is affected by the underdamping characteristic of the LCL filter therefore, it introduces to challenges to the control problem. Numerous control strategies such as repetitive, predictive, multiloop control, and hysteresis regulation have been proposed in order to improve the stability of the grid-connected VSIs. In this paper, the performance of the third order LCL filter-based grid-connected three-phase VSI is evaluated and the system stability is investigated using a two-loop control approach with both passive and active damping. The two-loop control considers the grid current as the outer loop while for the inner loop, different variables are considered such as capacitor voltage, capacitor current, and inductor current.

Conference

Conference7th IET International Conference on Power Electronics, Machines and Drives PEMD 2014
Abbreviated titlePEMD 2014
CountryUnited Kingdom
CityManchester
Period8/04/1410/04/14

Fingerprint

Electric potential
Capacitors
Control system stability
Passive filters
Power converters
System stability
Pulse width modulation
Hysteresis
Damping
Topology
Costs

Keywords

  • control system stability
  • inverter-based distributed generation
  • LCL filter
  • passive and active filters

Cite this

Azani, H., Massoud, A., Benbrahim, L., Williams, B. W., & Holliday, D. (2014). An LCL filter-based grid-interfaced three-phase voltage source inverter: performance evaluation and stability anaylsis. 1-6. Paper presented at 7th IET International Conference on Power Electronics, Machines and Drives PEMD 2014, Manchester, United Kingdom. https://doi.org/10.1049/cp.2014.0505
Azani, H. ; Massoud, A. ; Benbrahim, L. ; Williams, B. W. ; Holliday, D. / An LCL filter-based grid-interfaced three-phase voltage source inverter : performance evaluation and stability anaylsis. Paper presented at 7th IET International Conference on Power Electronics, Machines and Drives PEMD 2014, Manchester, United Kingdom.6 p.
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Azani, H, Massoud, A, Benbrahim, L, Williams, BW & Holliday, D 2014, 'An LCL filter-based grid-interfaced three-phase voltage source inverter: performance evaluation and stability anaylsis' Paper presented at 7th IET International Conference on Power Electronics, Machines and Drives PEMD 2014, Manchester, United Kingdom, 8/04/14 - 10/04/14, pp. 1-6. https://doi.org/10.1049/cp.2014.0505

An LCL filter-based grid-interfaced three-phase voltage source inverter : performance evaluation and stability anaylsis. / Azani, H.; Massoud, A.; Benbrahim, L.; Williams, B. W.; Holliday, D.

2014. 1-6 Paper presented at 7th IET International Conference on Power Electronics, Machines and Drives PEMD 2014, Manchester, United Kingdom.

Research output: Contribution to conferencePaper

TY - CONF

T1 - An LCL filter-based grid-interfaced three-phase voltage source inverter

T2 - performance evaluation and stability anaylsis

AU - Azani, H.

AU - Massoud, A.

AU - Benbrahim, L.

AU - Williams, B. W.

AU - Holliday, D.

PY - 2014

Y1 - 2014

N2 - Power converters in grid connection applications commonly employ Sinusoidal Pulse-Width Modulation (SPWM) technique. Passive filters are employed in order to attenuate the generated switching current ripples and reduces resonances between the grid and the inverter. The first-order (L), the second-order (LC), and the third-order (LCL) filters topologies are typical filters for grid connected Voltage Source Inverters (VSI). Practically, due to the system size, weight, and cost requirements, the LCL filter is the most commonly used among others for the integration of the three phase VSI into the grid. However, the control system stability is affected by the underdamping characteristic of the LCL filter therefore, it introduces to challenges to the control problem. Numerous control strategies such as repetitive, predictive, multiloop control, and hysteresis regulation have been proposed in order to improve the stability of the grid-connected VSIs. In this paper, the performance of the third order LCL filter-based grid-connected three-phase VSI is evaluated and the system stability is investigated using a two-loop control approach with both passive and active damping. The two-loop control considers the grid current as the outer loop while for the inner loop, different variables are considered such as capacitor voltage, capacitor current, and inductor current.

AB - Power converters in grid connection applications commonly employ Sinusoidal Pulse-Width Modulation (SPWM) technique. Passive filters are employed in order to attenuate the generated switching current ripples and reduces resonances between the grid and the inverter. The first-order (L), the second-order (LC), and the third-order (LCL) filters topologies are typical filters for grid connected Voltage Source Inverters (VSI). Practically, due to the system size, weight, and cost requirements, the LCL filter is the most commonly used among others for the integration of the three phase VSI into the grid. However, the control system stability is affected by the underdamping characteristic of the LCL filter therefore, it introduces to challenges to the control problem. Numerous control strategies such as repetitive, predictive, multiloop control, and hysteresis regulation have been proposed in order to improve the stability of the grid-connected VSIs. In this paper, the performance of the third order LCL filter-based grid-connected three-phase VSI is evaluated and the system stability is investigated using a two-loop control approach with both passive and active damping. The two-loop control considers the grid current as the outer loop while for the inner loop, different variables are considered such as capacitor voltage, capacitor current, and inductor current.

KW - control system stability

KW - inverter-based distributed generation

KW - LCL filter

KW - passive and active filters

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U2 - 10.1049/cp.2014.0505

DO - 10.1049/cp.2014.0505

M3 - Paper

SP - 1

EP - 6

ER -

Azani H, Massoud A, Benbrahim L, Williams BW, Holliday D. An LCL filter-based grid-interfaced three-phase voltage source inverter: performance evaluation and stability anaylsis. 2014. Paper presented at 7th IET International Conference on Power Electronics, Machines and Drives PEMD 2014, Manchester, United Kingdom. https://doi.org/10.1049/cp.2014.0505