Memorized approach for implementation of space vector pulse width modulation
DOI:
https://doi.org/10.21533/pen.v7.i4.1962Abstract
Space Vector Pulse Width Modulation, SV-PWM, is an efficient technique for dc to ac voltage conversion
through an inverter of power electronics devices. This paper presents a proposed memorized approach for
SV-PWM implementation. The work bases on storing six symmetric pattern formats of space vector in a
memory structure. Then, sequential fetching of the stored data provides basic optimum firing triggers TRA,
TRB and TRC for driving the inverter switching elements. Main contribution of the paper is controlling the
inverter output frequency online through adjusting the fetching period. Moreover, the presented approach
characterizes by simplicity, cost effective and activity in achieving the space vector technique. Validity of
the proposed method was practically examined through a hardware built workbench, which based on the
microcontroller ATMEGA 2560. Meanwhile, the optimum firing sequences were exported to a MATLAB
algorithm to check the harmonics, which are expected to accompany the inverter output ac power.
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