Title :
Switching loss characteristics of advanced DPWM methods using space vector based clamping sequences
Author :
Gowri, Sri K. ; Reddy, Brahmananda T. ; Babu, Sai Ch
Author_Institution :
Dept. of EEE, RGMCET, Nandyal, India
Abstract :
This paper analyzes the inverter switching loss characteristics of space vector based discontinuous PWM (bus-clamping) sequences. The discontinuous PWM (DPWM) sequences considered in this paper are 012 and 721 sequences. Utilizing these two sequences and varying the zero state at a spatial angle ¿ where ¿ is between 0° and 60°an infinite number of advanced DPWM (ADPWM) methods can be generated. The aim of the paper is to analyze the inverter switching losses of ADPWM methods. Also it will be shown that steady state line current distortion during high modulation indices is reduced significantly compared with the conventional SVPWM (CSVPWM). So, compared with the CSVPWM the proposed ADPWM methods are advantageous both in reducing line current distortion as well as inverter switching losses.
Keywords :
PWM invertors; distortion; losses; switching convertors; advanced DPWM methods; bus clamping sequences; discontinuous PWM; inverter switching loss; modulation indices; space vector; steady state line current distortion; Clamps; Energy loss; Functional analysis; Industrial electronics; Pulse inverters; Pulse width modulation inverters; Space vector pulse width modulation; Steady-state; Switching loss; Voltage; ADPWM; CSVPWM; Inverter switching loss; normalized switching energy loss;
Conference_Titel :
Industrial Electronics & Applications, 2009. ISIEA 2009. IEEE Symposium on
Conference_Location :
Kuala Lumpur
Print_ISBN :
978-1-4244-4681-0
Electronic_ISBN :
978-1-4244-4683-4
DOI :
10.1109/ISIEA.2009.5356458
