Abstract: In view of the problem of high energy consumption of existing high-power electrical haulage shearers, the paper proposed a design scheme of energy-saved frequency conversion speed regulation system based on TMS320LF2407A with dual inverters-dual motors and introduced components of the system. It analyzed working principle and gave energy-saved computational formula of the system as well. The system takes AC asynchronous motor as simulation load, dual inverters were connected in parallel at DC bus side, uses DSP to real-timely control and track servo system, and realizes change of motor state of electrical haulage shearer. The system provided dilivery loop of energy feedback too. The simulation result of Matlab proved that principle of the system is correct and energy-saved effect is remarkable.