This thesis presents a derivation of dynamic equation of line-start synchronous reluctance motor with respect to both rotor reference frame and stator reference frame. The derived equations are verified to ensure their correctness. After verified, the dynamic equation is used as an auxiliary tool in finite element analysis to measure the motor parameters and to decompose the component of electric torque. Finally, the maximum torque control algorithm and maximum power factor control algorithm are derived based on the dynamic equation. The proposed control algorithms are verified by simulation and experiment.