Title :
A modified cascaded multilevel inverter with reduced switch count employing bypass diodes
Author :
Al-Judi, Arif ; Bierk, Hussain ; Nowicki, Ed
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Calgary, Calgary, AB, Canada
Abstract :
In this paper, a bypass diode technique is introduced to the conventional H-bridge multilevel inverter topology that can reduce greatly the number of active switching elements in the system. Only one H-bridge is required for the entire single phase system, plus a transistor and a diode for each voltage source. A gradient search technique is employed to calculate the switching angles of the output waveform in order to achieve the minimum total harmonic distortion (THD). Single-phase experimental and 3-phase simulation results verify the concept development.
Keywords :
harmonic distortion; invertors; H-bridge multilevel inverter topology; THD; active switching elements; bypass diodes; minimum total harmonic distortion; modified cascaded multilevel inverter; switch count reduction; Automotive engineering; Battery powered vehicles; Circuit topology; Diodes; Inverters; Switches; Switching circuits; Total harmonic distortion; Vehicle driving; Zero voltage switching; THD; cascaded H-bridge; gradient search; harmonic recution; multilevel inverter;
Conference_Titel :
Vehicle Power and Propulsion Conference, 2009. VPPC '09. IEEE
Conference_Location :
Dearborn, MI
Print_ISBN :
978-1-4244-2600-3
Electronic_ISBN :
978-1-4244-2601-0
DOI :
10.1109/VPPC.2009.5289774
