ENERGY-SAVING CONTROL OF A TRACTION FREQUENCY-REGULATED SYN-CHRONOUS RELUCTANCE MOTOR
Journal Title: Електромеханічні і енергозберігаючі системи - Year 2018, Vol 3, Issue 43
Abstract
Purpose. The article is devoted to the study of energy and electromechanical processes, the development of energy-saving control for a traction frequency-controlled synchronous reluctance motor in steady-state regimes at super-nominal speeds, as well as under its acceleration and deceleration regimes. Metodology. In the studies, the methods of variation calculus, Runge-Kutta and simulation computer simulation were used. Results. For the known methods of controlling a synchronous reluctance motor, the calculated analytical dependences were obtained and studies were car-ried out on the interrelated change of the projections of the generalized stator current vector (on the axis of the rotating orthogonal coordinate system connected by the real axis to the magnetic axis of the motor rotor) and the modules of the generalized stator current and flow link vectors with varying values electromagnetic moment of the motor. The calculated analytical dependences are obtained and the maximum values of the modulus of the generalized vector of the stator current and the developed electromagnetic moment of this motor are studied in the range of supernominal speeds with a limited stator voltage applied to existing methods of controlling this motor. Originality. Calculations and analysis of the main electromagnetic power losses of this motor with variation of the electromagnetic moment and speed were carried out, on the basis of which recommendations on the application of the known methods of controlling a synchronous reluctance motor from the standpoint of energy saving were proposed. Using the method of variational calculus, the type of trajectories of the speed of the specified motor is determined, at which the total energy losses of the motor in starting-braking regimes are minimized. Practical value. Research has been carried out to study the specific total basic energy losses of a traction synchronous reluctance motor and to establish energy-saving values of the speeds of this motor, which ensure the minimization of these losses in steady-state conditions. An analytical re-lationship is proposed for calculating the possible mileage of an electric vehicle with the motor in question on a single battery charge.
Authors and Affiliations
Volodimir Volkov
Keywords
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- EP ID EP659955
- DOI 10.30929/2072-2052.2018.3.43.8-23
- Views 178
- Downloads 0
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