This paper presents schema of operation for floating voltage source multi-level inverters. The primary advantage of the proposed schema is that the number of voltage levels (and thus power quality) can be increased for a given number of semiconductor devices when compared to the conventional "flying capacitor" topology. However, the new schema requires fixed floating sources instead of capacitors and therefore is more suitable for battery power applications such as electric vehicles, flexible AC transmission systems and submarine propulsion. Alternatively transformer/rectifier circuits may be used to supply the floating sources in a similar way to cascaded H-bridge inverters. Computer simulation results are presented for 4-, 8- and 16-level inverter topologies. A 4-level laboratory test verifies the proposed method.

Meeting Name

Industry Applications Conference, 2002. 37th IAS Annual Meeting


Electrical and Computer Engineering

Keywords and Phrases

DC-AC Power Convertors; PWM Invertors; Battery Power Applications; Circuit Simulation; Computer Simulation; Electric Vehicles; Fixed Floating Sources; Flexible AC Transmission Systems; Floating Voltage Source Multi-Level Inverters; Full Binary Combination Schema; Inverter Topologies; Power Engineering Computing; Power Quality; Power Semiconductor Switches; Semiconductor Devices; Submarine Propulsion; Switching Circuits; Voltage Levels

International Standard Serial Number (ISSN)


Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2002 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Jan 2002