This paper proposes a novel control scheme for wide-speed-range operation of synchronous reluctance motors. The proposed scheme is a combination of maximum torque per ampere control, maximum torque per flux control, fluxweakening control, and torque limiting. These controls are based on a mathematical model in a rotating reference frame that is synchronized with the stator flux-linkage vector. The proposed control scheme is suitable for direct torque control or flux-oriented control. The validity of the control scheme is verified by the experimental results. Influences of parameter variation on the proposed control scheme are discussed. The proposed schemes of flux weakening and torque limiting are insensitive to parameter variation.