手把手教你学Simulink实例--基于Simulink的电力电子系统模块化设计仿真

 graph TD

    
 A[整个系统] --> B[能源输入模块]
    
 A --> C[功率转换模块]
    
 A --> D[信号处理模块]
    
 A --> E[热管理模块]
    
 B --> F[光伏阵列DC/DC]
    
 B --> G[电池组均衡控制]
    
 C --> H[Boost升压子模块]
    
 C --> I[LCC谐振转换]
    
 C --> J[多电平逆变]
    
 D --> K[ADC采样]
    
 D --> L[数字滤波]
    
 D --> M[PWM生成]
    
 E --> N[温度传感器网络]
    
 E --> O[主动散热系统]
    
 E --> P[相变材料储能]

 % 参数化建模代码

    
 function sys = boost_model(Vin, Vout, fsw)
    
     L = (Vout*(Vin/Vout -1)) / (2 * deltaI * fsw);
    
     C = (Vin * (Vin - Vout)) / (2 * L * fsw * deltaV);
    
     
    
     % 状态空间模型
    
     A = [0 1/L; -Vout/L 0];
    
     B = [0; 1/C];
    
     C = [1 0];
    
     D = 0;
    
     sys = ss(A,B,C,D);
    
 end

 %% FPGA控制代码（Verilog HDL）

    
 module pwm_controller (
    
     input clk,
    
     input reset_n,
    
     input [11:0] duty_cycle,
    
     output reg pwm_out
    
 );
    
  
    
 reg [23:0] counter;
    
 always @(posedge clk or negedge reset_n) begin
    
     if (!reset_n) begin
    
     counter <= 24_000_000; // 24MHz时钟
    
     pwm_out <= 0;
    
     end else begin
    
     if (counter == duty_cycle) begin
    
         pwm_out <= ~pwm_out;
    
     end
    
     counter <= counter + 1;
    
     end
    
 end
    
 endmodule

 % 过流保护算法

    
 function [status, trip] = overcurrent_protection(current, I_limit)
    
     status = 'Normal';
    
     if current > 1.2*I_limit then
    
     trip = true;
    
     status = 'Trip';
    
     % 触发软关断序列
    
     emit_alert();
    
     activate_snubber();
    
     else
    
     trip = false;
    
     end
    
 end

 % MATLAB/Simulink CAN配置

    
 canConfig = canChannelConfiguration('CAN1', 'SampleTime', 0.001);
    
 set_param('sys/CanBus', 'ChannelConfig', canConfig);
    
  
    
 % 消息定义
    
 msg = canMessage('PDO1', 'Data', [0; 0; 0; 0; 0.5*ones(1,2)]);

 % 使用Simulink Verification Toolbox

    
 test_case = sltestcase('interface_test.slx');
    
 addRequirement(test_case, 'DC-DC接口电压波动', 'tolerance', ±5%);
    
 simulate(test_case);

 graph TD

    
 A[交流输入] -->|EMI滤波| B(AC/DC整流)
    
 B --> C{充电模式}
    
 C -->|恒流模式| D[锂电池充电]
    
 C -->|恒压模式| E[车载设备供电]
    
 D --> F[SOC估算]
    
 E --> G[直流母线均衡]
    
 F -->|SOC=100%| H[自动断电]
    
 G -->|电压失衡| I[主动均衡电路]

 % 效率计算脚本

    
 total_power_in = mean(voltage_ac * current_ac);
    
 total_power_out = mean(voltage_dc * current_dc);
    
 efficiency = total_power_out / total_power_in * 100;
    
 disp(['系统效率 = %.2f%%', num2str(efficiency)]);