Modulation Strategy to Reduce Common-Mode Voltage for Three-to-Five Phase Indirect Matrix Converter - Intelligent Computing for Sustainable Energy and Environment - page 34

is even number. A proper selection of zero space vectors in the inverter stage
results in a reduction in the peak of CMV[13]-[14]. For example, the zero space
vector V 0 is chosen when the input current sector is odd number and the zero
space vector V 31 is chosen when the input current sector is even number. The
improved SVPWM pulse width modulation sequence is shown in Fig.5.

4 Simulation

Through the above analysis, simulations are carried out for a three-to-five phase
R lode using Matlab software. The simulation parameters are as follows:
Input power supply: line-to-line voltage U im = 100 V ,f =50 Hz . The switching
frequency of rectifier stage: f =5 kHz . The desired output line-to-line voltage

180

160

140

120

100

80

60

40

20

0

-20

0 0.005 0.01 0.015 0. 02 0. 025 0. 03 0. 035 0.04

t/s

Fig. 6. The waveform of rectifier stage

80

60

40

20

0

-20

-40

-60

-80

0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04

t/s

(a) The waveform of five-phase VSI

150

100

50

0

-50

-100

(b) The phase voltage of five-phase IMC

-150

0 0.005 0.01 0.015 0. 02 0. 025 0. 03 0. 035 0.04

t/s

200

150

100

50

0

-50

-100

-150

-200

0 0.005 0.01 0.015 0.02 0.025 0.03 0.035 0.04

t/s

(c) The line-to-line voltage of five-phase IMC

Fig. 7. The waveform of output voltage for VSI and IMC