In article construction of diagrams quality control for single-channel structure of the frequency-control asynchronous electric drive is considered, the choice of parameters of astatic speed regulator with use of the maximum good quality and a stability stock line is carried out. The comparative analysis of dynamic indicators of transients in traditionally adjusted and optimized single-channel and full two-channel structures of the asynchronous electric drive is made. The estimation of accompanying expansion of change admissible limits of the electric drive moment inertia is resulted