A Novel Scheme Suitable for High-Voltage and Large-Capacity Photovoltaic Power Stations

2014 IEEE 6th India International Conference on Power Electronics (IICPE)

2014

This paper presents a single stage solar photovoltaic (PV) grid interfaced power generating system using two-level 12-pulse double bridge voltage source converter (VSC) with improved sinusoidal signal integrator PLL (SSI-PLL) based control algorithm for large capacity plants with improved power quality. The maximum power is tracked with modified perturbation and observation (P&O) maximum power point tracking (MPPT) method and the maximum power obtained is transferred to the grid. Multipulse VSC results in reduction of grid current and grid voltage total harmonic distortion (THD) which is in accordance to the IEEE 519 standard without performing high frequency switching control. Simulated results have validated the design and control algorithm of the proposed system configuration under varying conditions.

Section: Introductionmentioning

confidence: 99%

Grid integration of single stage solar PV power generating system using 12-pulse VSC

2014 IEEE 6th India International Conference on Power Electronics (IICPE)

2014

“…Today advanced power electronics converters have contributed and play a vital role in the integration of large clean bulk solar energy into the grid with high efficiency, improved power quality and reliability [2][3]. The main challenges of high power solar PV grid interfaced power generating system are to have low switching losses in voltage source converters (VSC), harmonics in the line currents should be in accordance to the IEEE 519-1992 standard [4] and IEEE SCC21standard [5].…”

Section: Introductionmentioning

confidence: 99%

Investigations on solar PV grid interfaced power generating system using two-level twelve-pulse double bridge converter

2014 9th International Conference on Industrial and Information Systems (ICIIS)

2014

This paper presents the double stage solar photovoltaic (PV) grid interfaced power generating system using two-level twelve-pulse double bridge voltage source converter (VSC) for large capacity plants with improved power quality. The maximum power is tracked with variable step incrementalresistance (INR) maximum power point tracking (MPPT) method and the maximum power obtained is transferred to the grid. A set of two-level pulse double bridge converter consists of four 6-pulse two-level VSC operated at 50 Hz switching frequency. This results in reduction of grid current and grid voltage total harmonic distortion (THD) which is in accordance to the IEEE 519 standard without performing high frequency switching control. Simulated results have validated the design and control algorithm of the proposed system configuration under varying conditions.

“…Multipulse VSC topologies such as 12-pulse, 18-pulse and 24-pulse converters are one of the solutions for minimizing harmonics in FFS operation in high power applications as compared with the conventional two-level topologies [7][8][9][10][11][12][13]. In the multipulse VSC operation, the square wave gating pulses are phase shifted according pulse number used in the converter to reduce and eliminate the harmonics and to make the ac waveform nearly sinusoidal [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…With the development of HVIGBT module having rating 1200 A, 4500 V [5], it is possible to use boost converter in high solar PV power generating systems with MPPT to track maximum power from solar PV energy [12]. Extensive research of MPPT techniques such as variable step incremental resistance (INR) method, Gauss-Newton technique, adaptive fuzzy, adaptive perturbation and observation, incremental conductance, etc have been reported in the literature [14].…”

Section: Introductionmentioning

confidence: 99%

Grid integration of large capacity solar PV plant using multipulse VSC with robust PLL based control

2014 6th IEEE Power India International Conference (PIICON)

2014

This paper deals with the grid integration of a large capacity double stage solar photovoltaic (PV) power generating system using two-level 18-pulse double bridge VSC (voltage source converter) with robust synchronizing PLL based control. The maximum power is tracked from solar PV array using incremental conductance maximum power point tracking (MPPT) technique and is transferred to a three phase ac grid. Multipulse VSC consists of six 6-pulse two-level VSC operated at 50 Hz switching frequency and each VSC is commonly connected with phase shift transformers which cancel most of the harmonics between the converter modules and makes the ac waveform nearly sinusoidal without using high frequency switching control. Simulated results are presented for the proposed system configuration to demonstrate its performance under varying conditions.