Design of FPGA based SPWM Single Phase Inverter
Nowadays power inverter serves as an important emergency power supply system in events of mains power supply failure. The AC output voltage of a power electronic inverter is usually non-sinusoidal and hence has a high harmonic content. Sinusoidal Pulse Width Modulation (SPWM) scheme is normally used...
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| Main Authors: | , |
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| Format: | Conference or Workshop Item |
| Published: |
2009
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| Subjects: | |
| Online Access: | http://eprints.uthm.edu.my/403/ http://eprints.uthm.edu.my/403/1/18_full_afarul.pdf |
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| Summary: | Nowadays power inverter serves as
an important emergency power supply system in
events of mains power supply failure. The AC
output voltage of a power electronic inverter is
usually non-sinusoidal and hence has a high
harmonic content. Sinusoidal Pulse Width
Modulation (SPWM) scheme is normally used to
convert the DC power supply into AC power
supply by comparing the reference voltage
waveform with the triangular waveform known as
carrier. SPWM provides a way to reduce the total
harmonic distortion of load current. The objective
of this paper is to demonstrate a SPWM switching
by using Altera DE2 board. In this SPWM, a
sinusoidal reference voltage waveform is
compared with the triangular carrier voltage to
generate the on and off switching scheme. These
switching schemes will trigger the gate of the
power switch. In this paper, the SPWM switching
strategies will be develop using Altera DE2
(Cyclone II EP2C35F672C6) with 16 bit serial
configuration devices. The switching between
reference and carrier waveforms of SPWM is
obtained by using Matlab software. Simulation on
the design pulses is conducted using Quartus II
software tools provided by Altera. The output
frequency of SPWM is 50 Hz and the design is
limited to two levels of modulation index which
are 0.5 and 0.75. |
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