A new dasiaextended turn-off timepsila compensation parameter is introduced to overcome the low-current nonlinear voltage distortion effect in IGBT inverters. The compensation technique uses datasheet parameters in conjunction with an analytical approach to model the low-current switching characteristics of an IGBT. As a result, output voltage amplitude is accurately controlled and low-order voltage harmonics are reduced resulting in reduced current distortion, reduced power loss and, in motor drive applications, reduced torque ripple. The compensation technique can be easily integrated into a conventional dasiaaverage valuepsila type compensator without the need for significant modification and without the need for experimentally intensive lookup tables.
|Translated title of the contribution||The nonlinear voltage distortion effect of an extended IGBT turn-off time in sinusoidal PWM VSI applications|
|Title of host publication||Electric Machines and Drives Conference, 2009. IEMDC '09. IEEE International|
|Pages||1497 - 1502|
|Number of pages||6|
|Publication status||Published - 2009|
Bibliographical noteConference Proceedings/Title of Journal: IEMDC 2009
Conference Organiser: IEEE