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A lifetime improved single phase grid connected photovoltaic inverter

Mirzahosseini, R ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.1109/PEDSTC.2012.6183332
  3. Publisher: 2012
  4. Abstract:
  5. In this paper, a reliable low power single phase grid-connected inverter for photovoltaic modules is proposed. The inverter has improved lifetime since large electrolytic capacitor is replaced with small film capacitor due to circuit topology, power processing and proper control scheme. Thus the main limiting component in single phase grid connected inverters is obviated. The proposed inverter consists of two power processing stages. First a dual active bridge (DAB) converter boosts the voltage of PV panel to approximately 440 V and eliminates impact of high dc bus voltage ripples. A proper feed forward control is proposed to regulate the dc bus voltage with high ripple. Simulation results prove that obviating large electrolytic capacitor has no effect on utilization factor of photovoltaic modules
  6. Keywords:
  7. Photovoltaic (PV) module ; Control schemes ; DC-bus voltages ; Dual active bridges ; Duty cycle control ; Film capacitors ; Grid connected inverters ; Grid-connected photovoltaic inverters ; Low Power ; Phase shift control ; Photovoltaic modules ; Power processing ; PV panel ; Single phase ; Single phase grid connected inverters ; Utilization factor ; DC power transmission ; Electric inverters ; Electric network topology ; Electrolytic capacitors ; Photovoltaic cells ; Power electronics ; Photovoltaic effects
  8. Source: 2012 3rd Power Electronics and Drive Systems Technology, PEDSTC 2012, 15 February 2012 through 16 February 2012 ; February , 2012 , Pages 234-238 ; 9781467301114 (ISBN)
  9. URL: http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6183332