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Pal, Snehasish
- Digital Simulation of Two Level Inverter Based on Space Vector Pulse Width Modulation
Abstract Views :726 |
PDF Views:142
Authors
Affiliations
1 Department of Electrical Engineering, JIS College of Engineering, Kalyani, West Bengal-741233, IN
2 Stesalit Limited, Electronic Systems Division, Kolkata- 700091, IN
1 Department of Electrical Engineering, JIS College of Engineering, Kalyani, West Bengal-741233, IN
2 Stesalit Limited, Electronic Systems Division, Kolkata- 700091, IN
Source
Indian Journal of Science and Technology, Vol 5, No 4 (2012), Pagination: 2557-2568Abstract
Space Vector Pulse Width Modulation (SVPWM), one of the advanced computation based PWM techniques, has many advantages over conventional carrier-based PWM methodologies. Recently, with the easy availability of Microcontrollers and Digital Signal Processors, this technique is being widely used in industrial inverters. This paper presents a simple model for a three-phase two level SVPWM inverter using MATLAB-Simulink software. The entire model is based on only elementary Simulink blocks, and the use of advanced tool-box functions has been avoided. Hence, the model can be used, understood and modified easily as per the need of the user. The inverter has been divided into several sub-systems. Each such 'sub-system-block' is explained individually. Both linear and overmodulation- zone-controls have been included. The model operates successfully for various values of amplitude modulation index.Keywords
Space Vector Pulse Width Modulation, Two-level Inverter, MATLAB-simulink, Linear Zone, Over-modulation ZoneFull Text
References
- Bose BK (2006) Power electronics and motor drives: Advances and trends. Academic Press, Elsevier Publ.
- Holtz J (1992) Pulse width modulation- A survey, IEEE Transact. Indus. Elect. 39(5), 410-420.
- Mondal SK, Bose BK, Oleschuk V and Pinto JOP (2003) Space vector pulse width modulation of threelevel inverter extending operation into over modulation region. IEEE Transact. Power Elect. 18(2), 604–611.
- Zhou KZ and Wang D (2002) Relationship between space-vector modulation and three-phase carrierbased PWM: A comprehensive analysis. IEEE Transact. Indus. Elect. 49(1), 186–196.
- Kang DW, Lee YH, Suh BS, Choi CH, and Hyun DS (2003) An improved carrier-based SVPWM method using leg-voltage redundancies in generalized cascaded multilevel inverter topology. IEEE Transact. Power Elect. 18(1), 180-187.
- Boost MA and Ziogas PD (1988) State-of-the-art carrier PWM techniques: A critical evaluation. IEEE Transact. on Indus. Appl. 24(2) March/April.
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- Digital Simulation of forty Eight Pulse STATCOM for Reduction of Voltage Instability and Improvement of Power Quality
Abstract Views :508 |
PDF Views:181
Authors
Affiliations
1 Department of Electrical Engineering, JIS College of Engineering, Kalyani, W.B, IN
2 Stesalit Limited,Electronic Systems Division, Stesalit Towers, 1st Floor, E-2/3, Block EP-GP, Salt Lake, Sector-V, Kolkata- 700091, IN
1 Department of Electrical Engineering, JIS College of Engineering, Kalyani, W.B, IN
2 Stesalit Limited,Electronic Systems Division, Stesalit Towers, 1st Floor, E-2/3, Block EP-GP, Salt Lake, Sector-V, Kolkata- 700091, IN
Source
Indian Journal of Science and Technology, Vol 5, No 10 (2012), Pagination: 3506-3518Abstract
With the trend of progression of distributed generation within a bulk power system, there is a need to support bus bar voltage by injecting appropriate reactive power, which can also improve the dynamic behaviour of a power system. Static Synchronous Compensators (STATCOMs) is a power electronic based synchronous voltage generator (SVG), which provides embedded control of transmission-line voltage and power flows. The paper represents the internal structure of the forty eight pulse STATCOM-based on two24-pulse GTO-based converters, phase-shifted by 7.5 ° from each other for reduction in THD at the output voltage of the load in power systems. The integration of energy storage with a STATCOM can extend traditional STATCOM capabilities to four quadrant power flow control and transient stability improvement. The proposed model of the STATCOM is connected to a 25kv, 60 Hz system and simulation (in MATLAB) results are presented for demonstrating its steady state and dynamic performance. Fast Fourier Transform (FFT) analysis has also been carried out and the results showing the value of THD within acceptable limit and fast control of the reactive current. Thus the STATCOM shows excellent transient response to step change in the reactive current reference.Keywords
FACTS,STATCOM,VSI,FFT,THDFull Text
References
- Hingorani NG and Gyugyi L (2000)Understanding FACTS: Concepts and technology of flexible AC transmission systems. Institute of Electrical and Electronic Engineer, New York.
- Lai JS and Peng FZ(1996)Multilevelconverters: A new breed of power converters.IEEE Trans.Ind.Appl.32 (3), 509-517.
- Ma TT (2011)New control strategies for a Two-Leg Four Switch STATCOM.Proc. Int. Multi Conf.Eng.Vol II,IMECS-2011,Hongkong.
- Sood VK(2004) HVDC and FACTS Controllers: Applications of Static Converters in Power Systems.Kluwer Academic Publishers, USA.
- Singh B and Saha R(2006) A New 24-pulse STATCOM for voltage Regulation.Int. Conf. on Power Electronics, Drives and Energy Systems,PEDES. pp:1-5.
- IEEE Standard 519-1992(1992) IEEErecommended practices and requirements for harmonic control in electrical power systems. IEEE Inc., New York.
- Xiao Y, Song YH, Liu CC and Sun YZ(2003) Available transfer capability enhancement using FACTS devices.IEEE Transaction on Power Systems.Vol.18,No.1.
- Rao P, Crow ML and Yang Z (2000) STATCOM control for power system voltage control applications. IEEE transactions on Power Delivery. 15 (4), 1311-1313.
- Lee CK, Leung JSK, Ron-Hui SY and Chung HSH (2003) Circuit level comparison of STATCOM technologies. IEEE Trans. Power Electronics. 18 (4), 1084-1092.
- Ricardo DM (2003) Detailed analysis of a multi-pulse STATCOM, Pre-doctoral thesis.
- Performance Analysis of a Three Level Twelve-pulse VSC based STATCOM under Fault Condition
Abstract Views :317 |
PDF Views:0
Authors
Affiliations
1 Department of Electrical Engineering, JIS College of Engineering, Block-A, Phase-III, P. O. Kalyani, District Nadia-741235, IN
2 Department of Electrical Engineering, Bengal Engineering and Science University, West Bengal, IN
1 Department of Electrical Engineering, JIS College of Engineering, Block-A, Phase-III, P. O. Kalyani, District Nadia-741235, IN
2 Department of Electrical Engineering, Bengal Engineering and Science University, West Bengal, IN
Source
Indian Journal of Science and Technology, Vol 6, No 9 (2013), Pagination: 5189-5194Abstract
Recently with the progression of distributed generation, the power system needs flexible control of power transfer, better power flow control and improvement of transient stability. Additionally for improving the reliability of power system networks, using various protection strategies, power electronic switches are widely used to include new control strategies for improvement of quality of power. Cascaded multilevel inverter based STATCOM with higher bandwidth are now thus more efficient for minimizing voltage fluctuation, flicker mitigation, better reactive power compensation as well as stability enhancement. In our paper a three level twelve-pulse VSI based STATCOM is proposed in a distribution system for analyzing its effect on voltage profile as well as reactive power compensation under three phase fault condition. The proposed method for controlling the Statcom clearly shows that by proper utilization of the Statcom in our distribution system, voltage profile across the various types of load improves effectively under three phase fault condition and thus sustainability of the overall system will also improve. The output results show that the value of THD across different load voltages, e.g, FFT analysis of output voltage across STATCOM in the branch with fault (THD = 4.26%) has been shown. Additionally, FFT analysis of output voltage across Fixed Load (THD = 5.53%), Variable Load (THD = 2.76%), and Fixed Load current (THD = 2.85%) are within the acceptable limits and thus showing its well effectiveness in our proposed control strategy.Keywords
STATCOM, Reactive Power Control, FFT, FACTS, THDFull Text
References
- Hingorani N G, and Gyugyi L (2000). Understanding FACTS: Concepts and Technology of flexible AC Transmission Systems, Chapter 1, Institute of Electrical and Electronic Engineer, New York.
- XiaoY, SongY H et al. (2003). Available transfer capability enhancement using FACTS devices, IEEE Transactions on Power systems, vol 18, No. 1, 305–312.
- Garlia-Cerrada A, Garcia-Gonzaloz P et al. (2000). Comparison of thyristor controlled reactors and voltage-source inverters for compensation of flickers caused by arc furnaces, IEEE Transactions on P.D, vol 15, No. 4, 1225–1231.
- Pal S, and Dalapati S (2012). Digital simulation of eighty-four pulse statcom for improvement of Power Quality, International Journal of Engineering Research and Applications, vol-V, No. 3, 235–246.
- Rodriguez P, Medeiros G et al. (2010). Safe current injection strategies for a STATCOM under asymmetrical grid faults, Energy Conversion Congress and Exposition (ECCE), 3929–3935.
- Masood T, Aggarwal R K et al. (2010). STATCOM control reconfiguration technique for steady state and dynamic performance optimization during network fault conditions, International Conference on Renewable Energies and Power Quality (ICREPQ’10).