资源简介
基于MATLAB的spwm变频调速系统设计与仿真。建立异步电动机的模型,对变压变频进行了调速仿真
代码片段和文件信息
%% Parameters of the motor
Pw_n = 4000; % The nominal power of the ASM /VA
Vll_n = 380; % The nominal line-line voltage /Vrms
I_n = 8.8; % The nominal current /A
f_n = 50; % The nominal frequency /Hz
T_n = 25; % The nominal torque of motor /N.m
omega_sl_n = 2*pi*50*0.043; % The nominal slip of motor /rad.s^-1
N_n = 1430; % The nominal rotation speed of motor/rad.min^-1
I_nl = 4.2; % The nominal no load current
Rs = 1.483; % The stator resistance /ohm
Lls = 6.1e-3; % The stator inductance /H
Rr = 1.17; % The rotor resistance /ohm
Llr = 5.67e-3; % The rotor inductance /H
Lm = 153e-3; % The mutual inductance /H
Jm = 0.02; % Inertia of the rotor /kg.m^2
Fr = 0.0005; % Friction factor /N.m.s
p = 2; % Pole pairs
%% Parameters of the frequency converter and power net
fpwm = 10e3; % The frequency of the pwm /Hz
Vth_IGBT = 0; % The average threshold voltage through IGBT
Vth_DIODE = 0; % The average threshold voltage through diode
Vth = (Vth_IGBT+Vth_DIODE)/2;
deadtime = 0e-6; % The dead time of PWM /s
Vdc = 560; % The line-line voltage of power net /Vrms
%% Calculated Parameters
Ls = Lls + Lm;
Lr = Llr + Lm;
sigma = 1 - Lm^2/Ls/Lr;
Vln_n = Vll_n/sqrt(3);
Tr = Lr/Rr;
flux = I_nl*Lm*sqrt(2);
%% Simulation parameters
Tsamp = 1/fpwm; % Sample time in current loop
Tsim = 1e-6; % Sample time for simulation
%% Controller limiter
i_max = I_n*sqrt(2)*1.5; % Maximum current
V_max = Vdc/sqrt(3); % Maximum voltage
T_max = T_n*2; % Maximum torque
属性 大小 日期 时间 名称
----------- --------- ---------- ----- ----
文件 1930 2018-04-11 23:34 set_parameters.m
文件 55703 2018-04-11 23:34 Simulation_Inverter_ASM_FOC_2014a.slx
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