SPACE VECTOR PWM INVERTER
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08-10-2010, 03:05 PM



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JIN-WOO JUNG


Introduction

IGBTs: SEMIKRON SKM 50 GB 123D, Max ratings: VCES = 600 V, IC = 80 A
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raul7real_90
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06-05-2011, 06:00 PM

thanks you very much
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seminar flower
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18-07-2012, 04:33 PM

SPACE VECTOR PWM INVERTER


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Principle of Space Vector PWM

The circuit model of a typical three-phase voltage source PWM inverter is shown in Fig. 4.
S1 to S6 are the six power switches that shape the output, which are controlled by the switching
variables a, a′, b, b′, c and c′. When an upper transistor is switched on, i.e., when a, b or c is 1,
the corresponding lower transistor is switched off, i.e., the corresponding a′, b′ or c′ is 0.
Therefore, the on and off states of the upper transistors S1, S3 and S5 can be used to determine the
output voltage.
As illustrated in Fig. 4, there are eight possible combinations of on and off patterns for the
three upper power switches. The on and off states of the lower power devices are opposite to the
upper one and so are easily determined once the states of the upper power transistors are
determined. According to equations (2.1) and (2.2), the eight switching vectors, output line to
neutral voltage (phase voltage), and output line-to-line voltages in terms of DC-link Vdc, are
given in Table1 and Fig. 5 shows the eight inverter voltage vectors (V0 to V7).

Simulation Steps

1). Initialize system parameters using Matlab
2). Build Simulink Model
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