Pulse width modulation plays a crucial role in determining characteristics as well as work efficiency of the Z-source inverter. In this paper three switching patterns, applied in space vector modultion for Z-source inverter, were analyzed in term of: 1) utilizing DC voltage, 2) the peak dc-link voltage across the inverter bridge and 3) bi-directional energy exchange. The analysis the shows algebraic formula and the suitable switching pattern to implement on modem microcontrollers of a particular Z-source inverter design. Finally, the analytical results were verified by Matlab/Simulink simulation.