6
MatLAB Powersys
: MatLAB Powersys.
, .
(Asynchronous Machine)
: , .
A, B .
, b .
Tm . m , 21 : , , , , .
SimPowerSystems Machines Measurement Demux. ( ) ( ). . (dq-) .
( ) (. 1):
. 1. Asynchronous Machine
Rotor typ [ ] :
o Squirrel-Cage ;
o Wound .
Reference frame [ ] :
o Rotor ;
o Stationary ;
o Synchronous .
Nom. power, L-L volt. and frequency [Pn(VA), Un(V), fn(Hz)] Pn (), Un () fn ().
Stator [Rs(Ohm) Lls(H)] Rs () Ls () .
Rotor [Rr(Ohm) Llr'(H)] Rs () Ls () .
Mutual inductance Lm(H) ().
Inertia, friction factor and pairs ofpoles [J(kgm2) F(Nms) p] J(2), F(͕) p.
Initial conditions [s th(deg)isa,isb,isc(A) phA,phB,phC (deg)] .
, :
s ;
th (.);
isa, isb, isc ();
phA, phB, phC (.).
Powergui (. ). Machines Measurement Demux
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: . .
. 2.
:
Machine type . :
o Simplified synchronous ;
o Synchronous ;
o Asynchronous ;
o Permanent magnet synchronous .
. 2. Machines Measurement Demux
. .
Rotor currents [ira irb irc] .
Rotor currents [ir_q ir_d] q d.
Rotor fluxes [phir_q phir_d] q d.
Rotor voltages [vr_q vr_d] q d.
Stator currents [ia, ib, ic] A .
Stator currents [is_q is_d] A q d.
Stator fluxes [phis_q phis_d] q d.
Stator voltages [vs_q vs_d] V q d.
Rotor speed [wm] rad/s .
Electromagnetic torque [Te] N.m .
Rotor angle [thetam] rad .
.
.
: 220sqrt(2) 50 -120, 0 120. 3750 VA, (. 1).
. 3. SimPowerSystems: AC Voltage Source ( Electrical Sources), Asynchronous Machine SI Units ( Machines), Machines Measurement Demux ( Measurements), Ideal Switch ( Power Electronics), Ground ( Connectors). m , ( Terminator Sinks Simulink) (. 3).
. 3.
: Simulink Library Browser File/New/Model. . Simulink, SimPowerSystems Electrical Sources ( ), . drag-and-drop. Pulse Generator, g .
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, , . 1. Pulse Generator 1 , 3 50% . Scope ( Sinks Simulink), m Machines Measurement Demux, A B Voltage Measurement Measurements ( ). . Stop time, 3 , Max step size ( auto) Simulation/Simulation parameters . . 4. , 1,5 , . .
. 4. Rotor speed [wm]T Electromagnetic torque [] () ()