This master’s thesis first describes the operating principle of the Z-source inverter and presents several examples of converter topologies with an input impedance network for better comparison with the SSI. Then the operating principle and topology of SSI are described, as well as the utilized PWM methods. Equations for the calculation of inductor current and capacitor voltage ripples of the SSI, known from the literature, are given. For the given input parameters, the required inductance and capacitance values are calculated considering the utilized PWM methods. Attention is drawn to the influence of the magnetic saturation of the inductor on its inductance when the respective current increases, and the corresponding effective inductance curve was experimentally determined as a function of the inductor’s current. A model of an ideal three-phase SSI was built in the MATLAB-Simulink environment so as to obtain simulations results for the four considered PWM methods. Then a laboratory prototype of the three-phase SSI-based system was realized and experimental tests were carried, again with the four considered PWM methods. Also, additional experimental tests were carried with the MSVPWM method, which previously proved to be the best, and the obtained results were compared with the expected results, i.e., those based on theoretical considerations and previously performed simulations. As part of the experimental tests, the operating temperature of the system components was additionally determined using a thermal imaging camera in order to determine whether there are any deviations from the permitted values in this regard.