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Vinod Kumar Chandrakar - One of the best experts on this subject based on the ideXlab platform.
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Harmonic Domain Modelling of Space Vector Based STATCOM
Energy and Power Engineering, 2016Co-Authors: Devendra Manikrao Holey, Vinod Kumar ChandrakarAbstract:This paper presents frequency domain method for harmonic analysis of Space Vector based STATCOM. Space Vector Pulse Width Modulation (SVPWM) method is an advanced PWM method. It is a best method among all the PWM techniques. It provides a freedom in a switching cycle for placement Space Vector. In this paper, the SVPWM is used for switching of STATCOM. The harmonic (or frequency) domain is a steady-state form of harmonic analysis method, which represents converters to their harmonic spectra. This paper presents harmonic analysis by means of harmonic domain for Space Vector based Static shunt converter (STATCOM). Performance of the STATCOM is evaluated in harmonic domain simulation studies in MATLAB environment.
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Dynamic Harmonic Domain Modelling of Space Vector Based SSSC
Energy and Power Engineering, 2016Co-Authors: Devendra Manikrao Holey, Vinod Kumar ChandrakarAbstract:This paper presents analytical frequency domain method for harmonic modeling and evaluation of Space Vector Pulse Width Modulation (SVPWM) based static synchronous series converter (SSSC). SVPWM is the best among all the PWM techniques. It gives a degree of freedom of Space Vector placement in a switching cycle. Dynamic modeling technique is used for Space Vector modulation (SVM) based voltage source converter that is adapted as a static synchronous series converter (SSSC) for harmonic analysis using dynamic harmonic domain. Performance of the SSSC is evaluated in dynamic harmonic domain simulation studies in MATLAB environment. The switching function spectra are necessary for harmonic transfer matrix which is calculated using Fourier series. This paper presents the analysis of harmonics for Space Vector based SSSC during steady state and dynamic condition.
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Dynamic Harmonic Domain Modelling of Space Vector Based UPFC
American Journal of Electrical Power and Energy Systems, 2016Co-Authors: Devendra Manikrao Holey, Vinod Kumar ChandrakarAbstract:This paper presents analytical frequency domain method for harmonic modeling and evaluation of Space Vector Pulse Width Modulation (SVPWM) based unified power flow controller (UPFC). SVPWM is the best among all the PWM techniques. It gives a degree of freedom of Space Vector placement in a switching cycle. Dynamic modeling technique use for Space Vector modulation (SVM) based Unified power flow controller (UPFC) for harmonic analysis using dynamic harmonic domain. Performance of the device is evaluated in Dynamic harmonic domain simulation studies using MATLAB environment. The switching function spectra are necessary for harmonic transfer Matrix is calculated using Fourier series.
M. R. Baiju - One of the best experts on this subject based on the ideXlab platform.
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A New Space Vector Modulation Scheme for Multilevel Inverters Which Directly Vector Quantize the Reference Space Vector
IEEE Transactions on Industrial Electronics, 2015Co-Authors: Biji Jacob, M. R. BaijuAbstract:A new Space-Vector-based sigma delta modulation scheme for any general N-level voltage source inverter is proposed in this paper, which directly quantizes the reference Space Vector. The proposed scheme uses the sigma delta modulation with the quantizer implemented by the proposed Space Vector quantizer. A new scheme is proposed for directly quantizing the reference Space Vector to the multilevel inverter switching Vectors without mapping it into two-level inverter Vector Space. Voronoi regions of the multilevel inverter Vector Space in the proposed Space Vector quantizer are defined as a parallelogram with the inverter switching Vectors as its vertices. The property of the integer values of the inverter switching Vectors in 60° coordinates is utilized for the direct Vector quantization of the instantaneous reference voltage Space Vector. The proposed scheme is implemented for five-level inverters realized by an open-end-winding induction motor fed with two three-level inverters from either side having symmetrical dc-link voltages, and results are presented.
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A new Space Vector Modulation Scheme for any N-level Voltage Source Inverter which Directly Quantizes the Reference Space Vector
7th IET International Conference on Power Electronics Machines and Drives (PEMD 2014), 2014Co-Authors: Biji Jacob, M. R. BaijuAbstract:A new Space Vector based sigma delta modulation scheme for any general N-level voltage source inverter which directly quantizes the reference Space Vector is proposed in this paper. The proposed scheme uses the sigma delta modulation with quantizer implemented by the principle of Space Vector Quantization. A new scheme is proposed for directly quantizing the reference Space Vector to the multilevel inverter switching Vectors without mapping it into 2-level inverter Vector Space. The property of integer values of the inverter switching Vectors in 60° coordinates is utilized for the direct Vector Quantization of instantaneous reference voltage Space Vector. The multilevel inverter Vector Space is divided into different parallelogram to define Voronoi regions around the inverter switching Vectors in the proposed Space Vector quantizer. The proposed scheme is implemented for 5-level inverter realized by an open-end-winding induction motor fed with two 3-level inverter from either side having symmetrical dc-link voltages and results are presented.
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a simple Space Vector pwm generation scheme for any general n level inverter
IEEE Transactions on Industrial Electronics, 2009Co-Authors: M A S Aneesh, A. Gopinath, M. R. BaijuAbstract:This paper proposes a generalized method for the generation of Space Vector pulsewidth modulation (SVPWM) signals for multilevel inverters. In the proposed method, the actual sector containing the tip of the reference Space Vector need not be identified. A method is presented to identify the center of a sub-hexagon containing the reference Space Vector. Using the center of the sub-hexagon, the reference Space Vector is mapped to the innermost sub-hexagon, and the switching sequence corresponding to a two-level inverter is determined. A new technique is proposed in this paper, by which these two-level Vectors are translated to the switching Vectors of the multilevel inverter by adding the center of the sub-hexagon to the two-level Vectors. The proposed method can be extended to any n-level inverter, and a generalized algorithm is proposed. The scheme is explained for a five-level inverter, and experimental results are presented for a three-level inverter.
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Space Vector PWM for Multilevel Inverters - A Fractal Approach
2007 7th International Conference on Power Electronics and Drive Systems, 2007Co-Authors: A. Gopinath, M. R. BaijuAbstract:This paper proposes a Space Vector PWM (SVPWM) technique based on fractal approach for multilevel inverters. The inherent fractal structure in the Space Vector representation of multilevel inverters is brought out in this paper. The proposed method utilizes the inherent fractal structure of the Space Vector representation of multilevel inverters. Sector identification and switching Vector determination in SVPWM through this fractal approach reduces the computational complexity. The proposed method does not use any look up tables for sector identification. The switching Space Vectors are also directly determined without using any look up tables. The proposed scheme can be extended to an n-level inverter without increase in complexity. Simulation results are presented for a 5-level inverter.
Devendra Manikrao Holey - One of the best experts on this subject based on the ideXlab platform.
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Harmonic Domain Modelling of Space Vector Based STATCOM
Energy and Power Engineering, 2016Co-Authors: Devendra Manikrao Holey, Vinod Kumar ChandrakarAbstract:This paper presents frequency domain method for harmonic analysis of Space Vector based STATCOM. Space Vector Pulse Width Modulation (SVPWM) method is an advanced PWM method. It is a best method among all the PWM techniques. It provides a freedom in a switching cycle for placement Space Vector. In this paper, the SVPWM is used for switching of STATCOM. The harmonic (or frequency) domain is a steady-state form of harmonic analysis method, which represents converters to their harmonic spectra. This paper presents harmonic analysis by means of harmonic domain for Space Vector based Static shunt converter (STATCOM). Performance of the STATCOM is evaluated in harmonic domain simulation studies in MATLAB environment.
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Dynamic Harmonic Domain Modelling of Space Vector Based SSSC
Energy and Power Engineering, 2016Co-Authors: Devendra Manikrao Holey, Vinod Kumar ChandrakarAbstract:This paper presents analytical frequency domain method for harmonic modeling and evaluation of Space Vector Pulse Width Modulation (SVPWM) based static synchronous series converter (SSSC). SVPWM is the best among all the PWM techniques. It gives a degree of freedom of Space Vector placement in a switching cycle. Dynamic modeling technique is used for Space Vector modulation (SVM) based voltage source converter that is adapted as a static synchronous series converter (SSSC) for harmonic analysis using dynamic harmonic domain. Performance of the SSSC is evaluated in dynamic harmonic domain simulation studies in MATLAB environment. The switching function spectra are necessary for harmonic transfer matrix which is calculated using Fourier series. This paper presents the analysis of harmonics for Space Vector based SSSC during steady state and dynamic condition.
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Dynamic Harmonic Domain Modelling of Space Vector Based UPFC
American Journal of Electrical Power and Energy Systems, 2016Co-Authors: Devendra Manikrao Holey, Vinod Kumar ChandrakarAbstract:This paper presents analytical frequency domain method for harmonic modeling and evaluation of Space Vector Pulse Width Modulation (SVPWM) based unified power flow controller (UPFC). SVPWM is the best among all the PWM techniques. It gives a degree of freedom of Space Vector placement in a switching cycle. Dynamic modeling technique use for Space Vector modulation (SVM) based Unified power flow controller (UPFC) for harmonic analysis using dynamic harmonic domain. Performance of the device is evaluated in Dynamic harmonic domain simulation studies using MATLAB environment. The switching function spectra are necessary for harmonic transfer Matrix is calculated using Fourier series.
Thomas A. Lipo - One of the best experts on this subject based on the ideXlab platform.
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Space Vector PWM for Multilevel Converters
Pulse Width Modulation for Power Converters, 2009Co-Authors: D. Grahame Holmes, Thomas A. LipoAbstract:This chapter contains sections titled: Optimized Space Vector Sequences Modulator for Selecting Switching States Decomposition Method Hexagonal Coordinate System Optimal Space Vector Position within a Switching Period Comparison of Space Vector PWM to Carrier-Based PWM Discontinuous Modulation in Multilevel Inverters Summary This chapter contains sections titled: References ]]>
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Zero Space Vector Placement Modulation Strategies
Pulse Width Modulation for Power Converters, 2009Co-Authors: D. Grahame Holmes, Thomas A. LipoAbstract:This chapter contains sections titled: Space Vector Modulation Phase Leg References for Space Vector Modulation Naturally Sampled SVM Analytical Solution for SVM Harmonic Losses for SVM Placement of the Zero Space Vector Discontinuous Modulation Phase Leg References for Discontinuous PWM Analytical Solutions for Discontinuous PWM Comparison of Harmonic Performance Harmonic Losses for Discontinuous PWM Single-Edge SVM Switched Pulse Sequence Summary This chapter contains sections titled: References ]]>
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Optimized Space Vector switching sequences for multilevel inverters
IEEE Transactions on Power Electronics, 2003Co-Authors: Brendan Mcgrath, D.g. Holmes, Thomas A. LipoAbstract:Previous work has shown that Space Vector modulation and carrier modulation for two-level inverters achieve the same phase leg switching sequences when appropriate zero sequence offsets are added to the reference waveforms for carrier modulation. This paper presents a similar equivalence between the phase disposition (PD) carrier and Space Vector modulation strategies applied to diode clamped, cascaded N-level or hybrid multilevel inverters. By analysis of the time integral trajectory of the converter voltage, the paper shows that the optimal harmonic profile for a Space Vector modulator occurs when the two middle Space Vectors are centered in each switching cycle. The required zero sequence offset to achieve this centring for an equivalent carrier based modulator is then determined. The results can be applied to any multilevel converter topology without differentiation. Discontinuous behavior is also examined, with the Space Vector and carrier based modulation methods shown to similarly produce identical performance. Both simulation and experimental results are presented.
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Optimised Space Vector switching sequences for multilevel inverters
APEC 2001. Sixteenth Annual IEEE Applied Power Electronics Conference and Exposition (Cat. No.01CH37181), 1Co-Authors: Brendan Mcgrath, D.g. Holmes, Thomas A. LipoAbstract:Previous work has shown that Space Vector modulation and carrier modulation for two-level inverters achieve the same phase leg switching sequences when appropriate zero sequence offsets are added to the reference waveforms for carrier modulation. This paper presents a similar equivalence between the phase disposition carrier and Space Vector modulation strategies applied to diode clamped, cascaded N-level or hybrid multilevel inverters. By analysis of the time integral trajectory of the converter voltage, the paper shows that the optimal harmonic profile for a Space Vector modulator occurs when the two middle Space Vectors are centred in each switching cycle. The required zero sequence offset to achieve this centring for an equivalent carrier based modulator is then determined. The results can be applied to any multilevel converter topology without differentiation. Discontinuous behaviour is also examined, with the Space Vector and carrier based modulation methods shown to similarly produce identical performance. Both simulation and experimental results are presented.
Rajapandian Ayyanar - One of the best experts on this subject based on the ideXlab platform.
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Space Vector based hybrid pulsewidth modulation techniques for reduced harmonic distortion and switching loss
IEEE Transactions on Power Electronics, 2010Co-Authors: Di Zhao, G. Narayanan, V Pavan Kumar S S Hari, Rajapandian AyyanarAbstract:Novel switching sequences can be employed in Space-Vector-based pulsewidth modulation (PWM) of voltage source inverters. Different switching sequences are evaluated and compared in terms of inverter switching loss. A hybrid PWM technique named minimum switching loss PWM is proposed, which reduces the inverter switching loss compared to conventional Space Vector PWM (CSVPWM) and discontinuous PWM techniques at a given average switching frequency. Further, four Space-Vector-based hybrid PWM techniques are proposed that reduce line current distortion as well as switching loss in motor drives, compared to CSVPWM. Theoretical and experimental results are presented.