Voltage boosting capability of three phase current source inverter for standalone system

Document Type : Research Paper


1 Faculty of Electrical Engineering Technology, Universiti Malaysia Perlis, Perlis, Malaysia

2 NEOM Company, Tabuk, Saudi Arabia


This paper presents a three-phase current source inverter (CSI) topology with voltage boosting capability for standalone system. Current source inverter (CSI) and voltage source inverter (VSI) are two competitive options to be used as an interfacing unit between variable dc input resource and ac output fed into on-grid, off-grid and industrial used. Among the two topologies, VSI is widely used due to its variable controllable output voltage and ability to operate steadily with open loop V/Hz control. Yet, it suffers circuit complexity due to the need of extra converter stage to meet the required output. On the other hand, CSI has an advantage of voltage boosting capability and better quality of output waveshape, thus no extra converter stage is needed. Most of research works were focusing on studying the suitability and practicality of CSI, along with the advancement using silicon carbide-based power switches and improved modulation techniques to minimize the harmonics suffer by CSI. There is lack of research in investigating the boosting capability particularly on how high CSI able to boost the fundamental output and its impact to overall performance in both open and closedloop standalone system. Thus, this work is intended to highlight in detail the boosting capability of CSI and compare with VSI based on the several circuity and operational features. To support the work, three modulators are implemented namely sinusoidal pulse width modulation (SPWM), third harmonic injection PWM (THIPWM) and space vector modulation (SVM). A dedicated synchronous frame proportional-integral (PI) control in used in closed-loop condition. Result shows that CSI topology able to boost the fundamental output voltage by 52% to 58% by using smaller modulation index as compared to VSI. Interestingly, CSI able to achieve comparable quality and harmonic minimization of output voltage and current as in VSI but with smaller PI control gain. All works are analyzed and verified using MATLAB/Simulink platform.


[1] S.A. Azmi, M.A. Roslan, G.P. Adam and B.W. Williams. DC Current Offset Compensation Technique for Grid
Connected Inverters, 9th International Conference on Power Electronics - ECCE Asia: Green World with Power
Electronics (ICPE 2015-ECCE Asia) (2015) 617-623.
[2] S. A. Azmi, K. H. Ahmed, S. J. Finney and B. W. Williams, Comparative analysis between voltage and current source inverters in grid-connected application, In IET Conference on Renewable Power Generation, (2011)
101–101, https://doi.org/10.1049/cp.2011.0138.
[3] S.A. Azmi, M.F.N. Tajuddin, M.F. Mohamed and L.J. Hwai, Multi-loop Control Strategies of Three- phase
Two-level Current Source Inverter for Grid Interfacing Photovoltaic System, 3rd IEEE Conference on Energy
Conversion (CENCON2017), (2017) 227-282.
[4] A. Benslimane, J. Bouchnaif, M. Essoufi, B. Hajji, and L. el Idrissi, Comparative study of semiconductor power
losses between CSI-based STATCOM and VSI-based STATCOM, both used for unbalance compensation, Protection
and Control of Modern Power Systems, 5(1) (2020) 4. https://doi.org/10.1186/s41601-019-0150-4.
[5] H. Dai, R. A. Torres, W. Lee, T. M. Jahns, and B. Sarlioglu, Integrated Motor Drive using Soft-Switching CurrentSource Inverters with SiC- And GaN-based Bidirectional Switches, In ECCE 2020 - IEEE Energy Conversion
Congress and Exposition (2020). 2372–2378, https://doi.org/10.1109/ECCE44975.2020.9236394.
[6] V. Delli Colli, P. Cancelliere, F. Marignetti and R. Di Stefano, Influence of voltage and current source inverters on low-power induction motors, IEE Proceedings - Electric Power Applications, 152(5) (2005) 1311,
[7] E. Fernandez, A. Paredes, L. Romeral, and V. Sala, Analysis of power converters with devices of sic for applications
in electric traction systems, In 2016 IEEE International Power Electronics and Motion Control Conference, (2016)
267–272, IEEE. https://doi.org/10.1109/EPEPEMC.2016.7752009.[8] K. G. Jayanth, V. Boddapati, and R. S. Geetha, Comparative study between three-leg and four-leg current-source
inverter for solar PV application, In 2018 International Conference on Power, Instrumentation, Control and
Computing (PICC) , (2018) 1–6, IEEE. https://doi.org/10.1109/PICC.2018.8384793.
[9] S. Kouro, J. I. Leon, D. Vinnikov, and L. G. Franquelo, Grid-connected photovoltaic systems: An overview of
recent research and emerging PV converter technology, IEEE Industrial Electronics Magazine, 9(1) (2015) 47–61.
[10] P. Killeen, and D. C. Ludois, Evaluation of Drive Topologies for Macro Scale Synchronous Electrostatic Machines, In 2020 22nd European Conference on Power Electronics and Applications, (2020) 1–10,
[11] F. Lin Luo, and H. Ye, Advanced DC/AC Inverters: Applications in Renewable Energy, CRC Press Taylor &
Francis Group.
[12] J. W. Makhubele and K. A. Ogudo, Analysis on Basics of Modulation Techniques for AC Drive on Efficiency
Improvements, In 2020 IEEE PES/IAS PowerAfrica, (2020) 1–5.
[13] G. Migliazza, E. Lorenzani, F. Immovilli, and G. Buticchi, Single-Phase Current Source Inverter
with Reduced Ground Leakage Current for Photovoltaic Applications, Electronics, 9(10) (2020) 1618.
[14] H. Muhammad, P. D. Rashid, Power Electronics Handbook (4th ed.), (2018).
[15] K. B. Nagasai, and T. R. Jyothsna, Harmonic Analysis and Application of PWM Techniques for Three Phase
Inverter, International Research Journal of Engineering and Technology, (2016) 2395–56.
[16] S. Pradeepa, P. Kumar, and G. Prakash, Adoption of SVPWM Technique to CSI and VSI,
In 2018 3rd International Conference for Convergence in Technology (I2CT) (2018). 1–6.
[17] S. A. Ravindra and S. M. Ravindra, Grid-Connected Photo-Voltaic System By Using Different PWM Techniques For Inverter Control, In 2020 IEEE PES/IAS PowerAfrica , 1–4,
[18] A Vandermeulen and J. Maurin, Current source inverter vs, Voltage source inverter topology, (2014) 1–8.
[19] E. P. Wiechmann, P. Aqueveque, R. Burgos, and J. Rodriguez, On the Efficiency of Voltage Source and Current
Source Inverters for High-Power Drives. IEEE Transactions on Industrial Electronics, 55(4) (2008) 1771–1782.
[20] K. Zeb, W. Uddin, M. A. Khan, Z. Ali, M. U. Ali, N. Christofides, and H. J. Kim, A comprehensive review
on inverter topologies and control strategies for grid connected photovoltaic system, Renewable and Sustainable
Energy Reviews, 94 (2018) 1120–1141. https://doi.org/10.1016/j.rser.2018.06.053.
Volume 12, Special Issue
December 2021
Pages 1059-1074
  • Receive Date: 26 June 2021
  • Revise Date: 14 July 2021
  • Accept Date: 07 September 2021