A single leg switched PWM method for three-phase H-bridge voltage source converters
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Cita com:
hdl:2117/10671
Tipus de documentComunicació de congrés
Data publicació2009
Condicions d'accésAccés obert
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Reconeixement-NoComercial-SenseObraDerivada 3.0 Espanya
Abstract
This paper proposes a single leg switched or a
hybrid PWM (HPWM) method for three-phase three-level HBridge
Voltage Source Converters (3L-HB-VSCs). By means of
the proposed modulation, a 3L-HB-VSC can generate the same
output as a three-level neutral point clamped (3L-NPC) VSC with
phase disposition (PD) PWM provided that the outputs of 3L-HBVSC
are isolated by transformers or connected to open winding
machines. Thus, the proposed method is called PD-HPWM.
Moreover, it is emphasized that 3L-HB-VSC with HPWM utilizes
its switches similar to 3L-NPC-VSC. Compared to 3L-NPC-VSCs,
3L-HB-VSCs (without neutral point clamping diodes) have
simpler, more modular, and more reliable 2L circuit structure.
Therefore, this method encourages the use of 3L-HB-VSCs in the
applications utilizing transformers such as grid-side converters of
multi-MW wind turbines. The proposed PWM method’s
performance is demonstrated by the simulations of a 6MW wind
turbine’s grid connection and experimentally verified via a smallscale
prototype.
CitacióSenturk, O. [et al.]. A single leg switched PWM method for three-phase H-bridge voltage source converters. A: IEEE Energy Conversion Congress and Exposition. "IEEE Energy Conversion Congress and Exposition 2009". San Jose, California: 2009, p. 3137-3142.
ISBN9781424428939
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