六安网站建设找哪家,怎样提高百度推广排名,wordpress首页文章分类展示,响应式布局有几种方法经过第四周关于交流电机的学习#xff0c;我们通过对起调速特性的了解#xff0c;进行仿真#xff1a; 控制电机带重物上升#xff0c;从静止加速到800r/min保持800r/min匀速运动0.5s#xff0c;减速到静止#xff0c;保持静止状态0.5s#xff0c;带重物下降#xff0c…经过第四周关于交流电机的学习我们通过对起调速特性的了解进行仿真 控制电机带重物上升从静止加速到800r/min保持800r/min匀速运动0.5s减速到静止保持静止状态0.5s带重物下降从静止达到600r/min保持600r/min匀速运动0.6s减速到静止。(为了便于仿真匀速和静止持续时间较短)分析这里由于自耦降压启动具有K值方便直接调节的特点所以我们采用此种启动方法。由于变频调速具有调速范围广、平滑性好、能耗小无级调速故采用变频调速。制动采用相对方便的反接制动。 参数我们需要设置Ka,b,c 4个参数由于不方便计算都是通过观察图像进行调试从而得出近似值。我是将K先固定通过调节a,使转速稳定时接近800调节b,使其接近制动调节c使转速稳定时接近600. 从而我这里得出的参数K0.8a0.54,b0.07,c0.405. 代码 model SACIM A Simple AC Induction Motor Modeltype VoltageReal(unitV);type CurrentReal(unitA);type ResistanceReal(unitOhm);type InductanceReal(unitH);type SpeedReal(unitr/min);type TorqueReal(unitN.m);type InertiaReal(unitkg.m^2);type FrequencyReal(unitHz);type FluxReal(unitWb);type AngleReal(unitrad);type AngularVelocityReal(unitrad/s);constant Real Pi 3.1415926; Current i_AA Phase Current of Stator;Current i_BB Phase Current of Stator;Current i_CC Phase Current of Stator;Voltage u_AA Phase Voltage of Stator;Voltage u_BB Phase Voltage of Stator;Voltage u_CC Phase Voltage of Stator;Current i_aA Phase Current of Rotor;Current i_bB Phase Current of Rotor;Current i_cC Phase Current of Rotor;Frequency f_sFrequency of Stator;Torque TmTorque of the Motor;Speed nSpeed of the Motor; Flux Psi_AA Phase Flux-Linkage of Stator;Flux Psi_BB Phase Flux-Linkage of Stator;Flux Psi_CC Phase Flux-Linkage of Stator;Flux Psi_aa Phase Flux-Linkage of Rotor;Flux Psi_bb Phase Flux-Linkage of Rotor;Flux Psi_cc Phase Flux-Linkage of Rotor; Angle phiElectrical Angle of Rotor;Angle phi_mMechnical Angle of Rotor;AngularVelocity wAngular Velocity of Rotor; Torque TlLoad Torque; Resistance RsStator Resistance;parameter Resistance Rr0.408Rotor Resistance;parameter Inductance Ls 0.00252Stator Leakage Inductance;parameter Inductance Lr 0.00252Rotor Leakage Inductance;parameter Inductance Lm 0.00847Mutual Inductance; parameter Frequency f_N 50Rated Frequency of Stator;parameter Voltage u_N 220Rated Phase Voltage of Stator;parameter Real p 2number of pole pairs;parameter Inertia Jm 0.1Motor Inertia;parameter Inertia Jl 0.1Load Inertia;parameter Real K0.8starting rate;parameter Real a0.54frequency rate;parameter Real b0.07stable frequency rate; parameter Real c0.405another frequency rate;parameter Real P0.7stoping rate; initial equation Psi_A 0; Psi_B 0;Psi_C 0;Psi_a 0; Psi_b 0;Psi_c 0;phi 0;w 0; equationu_A Rs * i_A 1000 * der(Psi_A);u_B Rs * i_B 1000 * der(Psi_B);u_C Rs * i_C 1000 * der(Psi_C); Rr * i_a 1000 * der(Psi_a); Rr * i_b 1000 * der(Psi_b); Rr * i_c 1000 * der(Psi_c); Psi_A (LmLs)*i_A (-0.5*Lm)*i_B (-0.5*Lm)*i_C (Lm*cos(phi))*i_a (Lm*cos(phi2*Pi/3))*i_b (Lm*cos(phi-2*Pi/3))*i_c;Psi_B (-0.5*Lm)*i_A (LmLs)*i_B (-0.5*Lm)*i_C (Lm*cos(phi-2*Pi/3))*i_a (Lm*cos(phi))*i_b (Lm*cos(phi2*Pi/3))*i_c;Psi_C (-0.5*Lm)*i_A (-0.5*Lm)*i_B (LmLs)*i_C (Lm*cos(phi2*Pi/3))*i_a (Lm*cos(phi-2*Pi/3))*i_b (Lm*cos(phi))*i_c; Psi_a (Lm*cos(phi))*i_A (Lm*cos(phi-2*Pi/3))*i_B (Lm*cos(phi2*Pi/3))*i_C (LmLr)*i_a (-0.5*Lm)*i_b (-0.5*Lm)*i_c;Psi_b (Lm*cos(phi2*Pi/3))*i_A (Lm*cos(phi))*i_B (Lm*cos(phi-2*Pi/3))*i_C (-0.5*Lm)*i_a (LmLr)*i_b (-0.5*Lm)*i_c;Psi_c (Lm*cos(phi-2*Pi/3))*i_A (Lm*cos(phi2*Pi/3))*i_B (Lm*cos(phi))*i_C (-0.5*Lm)*i_a (-0.5*Lm)*i_b (LmLr)*i_c;Tm -p*Lm*((i_A*i_ai_B*i_bi_C*i_c)*sin(phi)(i_A*i_bi_B*i_ci_C*i_a)*sin(phi2*Pi/3)(i_A*i_ci_B*i_ai_C*i_b)*sin(phi-2*Pi/3)); w 1000 * der(phi_m);phi_m phi/p;n w*60/(2*Pi); Tm-Tl (JmJl) * 1000 * der(w);Tl 10;if time 100 thenu_A 0;u_B 0;u_C 0;f_s 0;Rs 0.531;elseif time106 thenf_s f_N*a; Rs 0.531;u_A u_N * 1.414 * sin(2*Pi*f_s*time/1000)*K*a; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*K*a;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*K*a; elseif time1706 thenf_s f_N*a; Rs 0.531;u_A u_N * 1.414 * sin(2*Pi*f_s*time/1000)*a; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*a;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*a; elseif time1756 thenf_s f_N*a;Rs 3;u_A u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*a; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*a;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000)*a;elseif time2679 thenf_s f_N*a;Rs 0.531;u_A u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*a; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*a;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000)*a;elseif time3196 thenu_A u_N * 1.414 * sin(2*Pi*f_s*time/1000)*b; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*b;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*b; f_s f_N*b;Rs 0.531;elseif time3310 thenu_A u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*K*c; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*K*c;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000)*K*c; f_s f_N*K*c;Rs 0.531; elseif time4560 thenu_A u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*c; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*c;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000)*c; f_s f_N*c;Rs 0.531;elseif time4595.5 thenf_s f_N*P*a;Rs 2;u_A u_N * 1.414 * sin(2*Pi*f_s*time/1000)*a*P; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*a*P;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*a*P; elseif time5560 thenf_s f_N*a; Rs 0.531;u_A u_N * 1.414 * sin(2*Pi*f_s*time/1000)*a; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*a;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*a; elseu_A u_N * 1.414 * sin(2*Pi*f_s*time/1000)*b; u_B u_N * 1.414 * sin(2*Pi*f_s*time/1000-2*Pi/3)*b;u_C u_N * 1.414 * sin(2*Pi*f_s*time/1000-4*Pi/3)*b; f_s f_N*b;Rs 0.531;end if; end SACIM; 得出的仿真图像 转载于:https://www.cnblogs.com/cyykhyql/p/5305839.html
