Comparing Electric Motors: An Analysis Using Four Standard Driving Schedules

Adaptive Control of Switched Reluctance Motor Drives under Variable Torque Applications

“…Defining the speed error * e ω ω = − , where * ω is a reference speed, the sliding surface may be adopted as 1 c S e e = + , c 0 > and its derivative is:…”

“…where 1 V is a negative semi-definite function and according to the Lyapunov stability theorem, the asymptotical stability of the control system is guaranteed, and the speed error asymptotically converges to zero [22].…”

“…The first adaptive subcontroller 1 u deals with unstructured uncertainties and 2 u tackles timevarying external disturbances. Exponential parameters δ and σ are some positive constants, selected by the designer.…”

“…The experimentally measured flux linkage curves of used SRM are shown in Fig 2. In the following, the system performance is evaluated despite the variation of load torque, as an external disturbance, and compared with that of ASMC. To this end, the ASMC parameters are selected as 1 20 K = , c=8 and ρ 0.3 = . The proposed adaptive control parameters…”

“…During the last decade, various investigations have been devoted to the field of switched reluctance motors due to such advantages as lower costs and higher reliability, over PM-based machines in automotive applications [1]. Moreover, SRM is becoming increasingly a candidate for Electric Vehicles (EVs) due to its extended speed range at constant power that can minimize the power rating of the propulsion system for high acceleration performance and maximize the capability of recovering energy during regenerative braking operation [2].…”