Main Article Content


 In this paper, a soft-switched alternating current (AC)-link buck-boost inverter with a reduced number of switches, referred to as a sparse AC-link buck-boost inverter, was designed and implemented for a photovoltaic (PV) interface. Important features of the sparse configuration included a lower number of switches, lower failure rates, compactness, and cost-effectiveness. The link was composed of a low reactive rating series inductor/capacitor pair. Significant merits of the AC-link buck-boost inverter are a zero voltage turn on and a soft turn off of the switches, resulting in minimum voltage stress on the switches and negligible switching losses. In this paper, 10 switches were used instead of 20 switches as are used in existing buck-boost inverter topology. The reduction in the number of switches did not change the principle of operation of the sparse configuration; hence, it remains the same as that of the original configuration. The pulse width modulation (PWM) technique was used for gating the switches. The inverter operation was validated and implemented for PV interface using a microcontroller.



Sparse inverter Photovoltaic systems Zero voltage switching MATLAB Microcontroller.

Article Details

How to Cite
Ramaprabha, R., Ramya, G., Ashwini, U., & Humaira, A. F. (2016). Realization of a Photovoltaic Fed Sparse Alternating Current (AC)-Link Inverter. The Journal of Engineering Research [TJER], 13(2), 149–159.


  1. Amirabadi M, Toliyat HA, Alexander W (2009), Battery-utility interface using soft switched AC link supporting low voltage ride through. IEEE Energy Conversion Congress Expo and Conference. San Jose, CA, USA. 2606–2613.
  2. Amirabadi M (2013), Soft-switching highfrequency ac-link universal power converters with galvanic isolation. Ph.D. dissertation, Texas A&M University, College Station, TX, USA.
  3. Amirabadi M, Baek J, Toliyat HA (2014), Sparse ac-link buck–boost inverter. IEEE Transactions on Power Electronics 29(8): 3942– 3953.
  4. Amirabadi M, Balakrishnan A, Toliyat H, Alexander W (2014), High frequency ac-link PV inverter. IEEE Transactions on Industrial Electronics 61(1): 281–291.
  5. Amirabadi M, Toliyat HA, Alexander W (2009), Battery-utility interface using soft switched AC link buck boost converter. Electric Machines and Drives Conference 1299-1304.
  6. Atcitty S, Granata JE, Quinta MA, Tasca CA (2011), Utility-scale grid-tied PV inverter reliability workshop summary report. Sandia National Labs, Sandia Rep. SAND2011-4778.
  7. Balakrishnan A, Toliyat HA, Alexander WC (2008), Soft switched ac link buck boost converter. Twenty-Third Annual IEEE Appl. Power Electronics Conference Exp, Austin, Texas: IEEE 1334–1339.
  8. Carlson DE (1989), Fossil Fuels. The greenhouse effect and photovoltaics. IEEE Aerospace and Electronics Systems Magazine, 4(12): 3-7.
  9. Chakraborty S, Kramer B, Kroposki B (2009), A review of power electronics interfaces for distributed energy systems towards achieving low-cost modular design. Renewable and Sustainable Energy Reviews 13(9): 2323-2335.
  10. Kjaer SB, Pedersen JK, Blaabjerg F (2005), A review of single-phase grid-connected inverters for photovoltaic modules. IEEE Transactions on Industry Applications 41(5): 1292-1306.
  11. Kerekes T, Teodorescu R, Rodriguez P, Vazquez G, Aldabas E (2011), A new high-efficiency single-phase transformerless PV inverter topology. IEEE Transactions on Industrial Electronics 58(1): 184-191.
  12. Qin YC, Mohan N, West R, Bonn R (2002), Status and needs of power electronics for photovoltaic inverters. Sandia National Labs, Sandia Rep.: SAND2002-1535.
  13. Shen WX (2008), Design of standalone photovoltaic system at minimum cost in Malaysia. IEEE Conference on Industrial Electronics and Applications 702 -707.
  14. Sood PK, Lipo TA, Hansen IG (1988), A versatile power converter for high frequency link systems. IEEE Transactions on Power Electronics 3(4): 383–390.
  15. Subudhi B, Pradhan RA (2013), Comparative study on maximum power point tracking techniques for photovoltaic power systems. IEEE Transactions on Sustainable Energy 4(1): 89–98.
  16. Toliyat H A, Balakrishnan A, Amirabadi M, Alexander W (2008), Soft switched ac-link AC/AC and AC/DC buck-boost converter. In: IEEE Power Electronics Specialist Conference; 15-19 June 2008; Rhodes: IEEE: 4168–4176.
  17. Villalva MG, Gazoli JR, Filho ER (2009), Comprehensive approach to modeling and simulation of photovoltaic arrays. IEEE Transactions on Power Electronics 24(5): 1198– 1208.
  18. Zahedi A (2002), Development of a numerical model for evaluating the performance of renewable generation systems. Proceedings of IEEE TENCON, 1950-1953.