Fractal Approach Based Simplified and Generalized Sector Detection in Current Error Space Phasor Based Hysteresis Controller Applied to Multilevel Front-End Converters

Shah, M. T.; Chauhan, Siddharthsingh K.; Tekwani, P. N.

doi:10.1109/tpel.2020.2977977

Cited by 9 publications

(4 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For easier identification of the voltage vector regions and to reduce the current error, different methods are presented. [15][16][17]32 The method adopted here is by finding centroid using the three phase magnitudes of the reference voltage. In this method, the centroid of each regions present in the sector is found out and the least distance from the centroid is read as the current region.…”

Section: Region Identification Based On the Sampled Magnitude Of Reference Voltagementioning

confidence: 99%

“…As the level increases, the number of regions in a sector also increases. For easier identification of the voltage vector regions and to reduce the current error, different methods are presented 15‐17,32 . The method adopted here is by finding centroid using the three phase magnitudes of the reference voltage.…”

Section: Cascaded H‐bridge Inverter Based Statcom With Modified Hyste...mentioning

confidence: 99%

“…The advent of current error space phasor (CESP) based HCC led to the reduction in switching frequency variations, and reduced the current errors, thereby improving the performance. Investigations on the CESP based HCC mostly reported on the motor drive applications and power quality applications 22‐33 . In 22 , considering the CESP method, the vector with a larger error deviation provides the minimum current error 23,24 .…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modified hysteresis current controller for cascadedH‐Bridgeinverter–basedSTATCOM

Raju

Cheriyan

Ramchand

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

A modified hysteresis current controller to achieve nearly constant switching frequency operation for a cascaded H bridge inverter based STATCOM is the focus of this article. The varying switching frequency characteristics of conventional hysteresis current controller for grid connected systems is a threat to the other loads, despite of the fast transient response offered. A constant switching frequency operation imparts a proper current filtering action and quick current tracking in grid connected systems. The modified hysteresis controller using variable hysteresis boundary proposed in this article contributes constant switching frequency characteristics without compromising the dynamic performance of the system. The variable hysteresis boundary is determined from the computed values of current error, and this computation is based on the sampled values of reference voltage vector. The boundary computation is embedded in the space vector modulation of inverter to ensure optimal switching vector selection. When compared to the conventional two-level voltage source inverters, multilevel inverters have enhanced power capability and quality. The hysteresis current controller described in this article is designed for a cascaded H-bridge inverter based STATCOM to achieve a voltage fast fourier transform (FFT) profile similar to that of a space vector modulated cascaded H-bridge inverter. The three-level cascaded H-bridge inverter based STATCOM with proposed current control strategy has better steady-state performance, faster dynamic performance, and constant switching frequency characteristics as compared to a voltage controlled space vector modulated three-level cascaded H-bridge inverter based STATCOM, which is experimentally substantiated. The hardware implementation of the controller for the STATCOM of rating 5 kVA is carried out on OPAL-RT real-time simulator platform and is validated experimentally for a three-phase balanced load.

show abstract

Section: Region Identification Based On the Sampled Magnitude Of Reference Voltagementioning

confidence: 99%

Section: Cascaded H‐bridge Inverter Based Statcom With Modified Hyste...mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modified hysteresis current controller for cascadedH‐Bridgeinverter–basedSTATCOM

Raju

Cheriyan

Ramchand

2021

Int Trans Electr Energ Syst

View full text Add to dashboard Cite

show abstract

“…Further investigations addressed the issues associated with the conventional hysteresis current control in the motor drive applications [19–26, 28–31, 33]. Some of these works focused on current error space phasor (CESP)‐based HCC for reducing switching frequency variations, thereby resulting in reduced current error and enhanced performance [19–21].…”

Section: Introductionmentioning

confidence: 99%

Investigations on STATCOM using current error space phasor based modified hysteresis current controller

Raju

Cheriyan

Ramchand

2020

IET Generation Trans & Dist

View full text Add to dashboard Cite

A STATCOM that employs a nearly constant switching frequency hysteresis current controlled VSI is presented in this paper. Hysteresis controller enhances the dynamic performance of STATCOM. The switching frequency variations associated with the conventional hysteresis current controller is reduced by using a variable hysteresis boundary. Variable hysteresis boundary is predetermined by the current error, based on the sampled magnitudes of the reference voltage vector. This makes the switching frequency nearly constant and switching vector selection optimal. As a result, a voltage FFT profile similar to that of a space vector modulated STATCOM is obtained. Choosing a space vector based reference voltage vector keeps the current error within the pre-calculated boundaries and improves the current tracking capability of STATCOM. The systematic method of selecting a switching sequence avoids random switching. Effectiveness of the proposed method for the control of grid-connected STATCOM is experimentally verified and compared with a voltage-controlled space vector modulated voltage source inverter based STAT-COM. The hardware implementation of the controller for grid-connected STATCOM is carried out in OPAL-RT real-time simulator platform and experimentally validated for a three-phase balanced load of 5 kVA.

show abstract

Capacitor voltage unbalance minimization for three-phase five-level diode-clamped inverter using hexagonal hysteresis space vector modulation

Palanisamy,

Singh,

Ramkumar

et al. 2023

Multiscale and Multidiscip. Model. Exp. and Des.

View full text Add to dashboard Cite

Fractal Approach Based Simplified and Generalized Sector Detection in Current Error Space Phasor Based Hysteresis Controller Applied to Multilevel Front-End Converters

Cited by 9 publications

References 24 publications

Modified hysteresis current controller for cascadedH‐Bridgeinverter–basedSTATCOM

Modified hysteresis current controller for cascadedH‐Bridgeinverter–basedSTATCOM

Investigations on STATCOM using current error space phasor based modified hysteresis current controller

Capacitor voltage unbalance minimization for three-phase five-level diode-clamped inverter using hexagonal hysteresis space vector modulation

Contact Info

Product

Resources

About