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A Double Grounded Transformerless Photovoltaic Array String Inverter with Film Capacitors and Silicon Carbide Transistors

Abstract A new photovoltaic (PV) array power converter circuit is presented. The salient features of this inverter are: transformerless topology, grounded PV array, and only film capacitors. The motivations are to reduce cost, eliminate leakage ground currents, and improve reliability. The use of Silicon Carbide (SiC) transistors is the key enabling technology for this particular circuit to attain good efficiency.

Traditionally, grid connected PV inverters required a transformer for isolation and safety. The disadvantage of high frequency transformer based inverters is complexity and cost. Transformerless inverters have become more popular recently, although they can be challenging to implement because of possible high frequency currents through th... (more)
Created Date 2014
Contributor Breazeale, Lloyd Caleb (Author) / Ayyanar, Raja (Advisor) / Karady, George (Committee member) / Tylavsky, Daniel (Committee member) / Tsakalis, Konstantinos (Committee member) / Arizona State University (Publisher)
Subject Electrical engineering / Double grounding / Photovoltaic / Power decoupling / power electronics / Single phase inverter / Transformerless inverter
Type Doctoral Dissertation
Extent 103 pages
Language English
Reuse Permissions All Rights Reserved
Note Doctoral Dissertation Electrical Engineering 2014
Collaborating Institutions Graduate College / ASU Library
Additional Formats MODS / OAI Dublin Core / RIS

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Description Dissertation/Thesis