Proiectarea unui Motor Asincron Trifazat

Tema de proiectare:

Sa se proiecteze un motor asincron trifazat cu datele de mai jos, avand clasa de izolatie F si temperatura pentru clasa B.

Pn=15000 W 2p=6

Un=400V

f=50Hz

η=78.2

cosφ=0.69

In=41A

Ip=184.5A

Ip/In=4.5

nn=148

Mp/Mn= 1.9

Mmax/Mn=2.3

lg Js JR Bagsp elsp Cosφn ηn Mp/Mn Mmax/Mn Ip/In

0.7 1.7 2.4 0.7 20 0.681 0.854 1.22 1.866 4.423

0.6 1.6 2.3 0.6 20 0.7 0.87 0.576 1.01 4.944

0.6 1.6 2.1 0.5 18 0.723 0.909 1.65 2.32 3.654

0.4 1.5 1.5 0.4 21 -- -- 3.15 3.536 --

0.4 1.6 1.7 0.5 22 0.77 0.91 2.475 3.21 5.976

0.3 1.1 1.3 0.5 22 0.8 0.916 2.321 3.112 6.654

0.3 0.8 1.0 0.6 20 0.69 0.782 1.943 2.355 4.534

%filename m1.m

%input parameter for induction machine design

%

%Used in idesign.m

%

%Lucian Tutelea Aug. 1999

Pn=15; %kW, rated Power

nb=1000; %rpm, rated (base) sped

nmax=3*nb;

Vn=400; %V, rated line Votage

m=3; % Phae number

conex='y'; % Stator windings conections

% y for star and d for poligon conection

poles=2; % numbers of poles

etaSpec=0.782; % rated eficiency

cosPhiSpec=0.69; % rated power factor

rpos='i'; % rotor position: i -iner rotor, o - outer rotor

rwkind='s'; % kind of rotor windings: s - shortchircuit

designAs='m'; % Design as: m-motor, g-generator

lg=0.3; %mm length of airgap;

% Stator slots - Primary dimensions

sSlotShape = ['b']; % Stator slot shape

sMs=2.6; % Mouth of stator slot mm.

sh4=.8; % height of slot mouth mm.

sAlpha=22.5; % degrees

sh2=0; % in this case as winding fills slot

%Rotor slots - Primary dimensions

%rSlotSkew=27; % Rotor skew = 1/rSlotSkew of rotor periphery

rSlotShape= ['b']; % Rotor slot shape

rMs=1.5; % Mouth of rotor slot mm.

rh1=0.5;

%charge of materials

Js=0.8; %A/mm^2 Stator current density

Jr=1.0; %A/mm^2 Rotor current density

Jendring=4; %A/mm^2 Current denssity in rotor end ring of rotor cage

elsp=20; %kA/m Specificate electric load

sBToothsp=2; %T Specificate magnetic inductin in stator Tooth

sBYokesp=1.7; %T Specificate magnetic inductin in stator yoke

rBToothsp=2.1; %T Specificate magnetic inductin in rotor Tooth

rBYokesp=2.1; %T Specificate magnetic inductin in rotor yoke

Bagsp=0.6; %T Specificate magnetic inductin in air gap

sSlotFills=0.48;% Specificate stator sllot fill