INDUCTOR MOTOR CONTROL PROCESS Russian patent published in 2004 - IPC

FIELD: electrical engineering; inductor-motor drives for dc and ac rolling stock. SUBSTANCE: inductor motor control process boils down to calculation of moments t₁ and t₂ when supply of voltage pulses to phase winding is initiated and ceased, respectively, from start of rotor position sensor period using formula t₁ = T/2-A; t₂ = T-A-C where T is period of signal coming from rotor position sensor; A is pulse supply lead; C is shortening of pulse supply zone. Space between t₁ and t₂ is divided into m more spaces; in order to reduce torque fluctuations current value is found for each space, its value being found from , where M₃Θ_n is desired torque at n-th space; L(Θ_n,i_n-1) is inductance by end of n-th space at current i_n-1; L(Θ_n-1,i_n-1) is inductance by end of (n 1) or at start of n-th space at current i_n-1; ΔΘ is angle of turn of rotor at n-th space; i_n-1 is phase current by end of (n 1) space; voltage pulse is not generated if phase current is higher than i_n, in beginning of n-th space. EFFECT: reduced torque fluctuations due to generating phase currents including changes in control process. 1 cl, 5 dwg