Toraj Taheri, Department of Electrical Engineering, Masjedsolyman Branch, Islamic Azad University, Masjedsolyman, Iran, Sam Hatami, Department of Mechanical Engineering, Arak Branch, Islamic Azad University, Iran and Farideh Khodabakhshi, Department of Electrical Engineering, Masjedsolyman Branch, Islamic Azad University, Masjedsolyman, Iran.

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Abstract:
Voltage source control methods include the switching method of sinusoidal pulse width modulation and pulse width modulation of vector space. These methods are based on a fixed pattern when on and off inverter switches until generate a waveform of fixed voltage in output. In this paper, by performing simulations using MATLAB software, methods sinusoidal pulse width modulation and vector space pulse width modulation in three-phase inverters in terms of common mode voltage generation are compared with each other and finally, the best method of the target selected. Because, the simulation results of the paper, which is done under different status, compare and conclude with each other. A similar test system for use in all status be defined. Such system is including a ohmic–inductive load with connecting the stars that by a capacitance is connected to ground.

Index Terms— Sinusoidal pulse width modulation, vector space pulse width modulation, common mode voltage.