Simulink开发项1000例实战专栏--实例205：基于Simulink的燃料电池电源系统仿真

 function dutyCycle = fcn(error, integral)

    
     % Parameters
    
     Kp = 1;  % Proportional gain
    
     Ki = 0.1;  % Integral gain
    
     
    
     % Calculate the control signal
    
     dutyCycle = Kp * error + Ki * integral;
    
     
    
     % Ensure duty cycle is within bounds [0, 1]
    
     dutyCycle = max(0, min(1, dutyCycle));
    
 end

 % 清除当前工作区的所有变量

    
 clear all; close all;
    
  
    
 % 创建新的Simulink模型
    
 modelName = 'Fuel_Cell_Power_System_Simulation';
    
 new_system(modelName);
    
 open_system(modelName);
    
  
    
 % 添加燃料电池堆
    
 add_block('simscape/Electrical/Specialized Power Systems/Fundamental Blocks/Sources/Fuel Cell Stack', [modelName '/Fuel_Cell_Stack']);
    
 set_param([modelName '/Fuel_Cell_Stack'], 'NumberOfCells', '100'); % 燃料电池单元数量
    
 set_param([modelName '/Fuel_Cell_Stack'], 'NominalPower', '5000'); % 标称功率为5kW
    
 set_param([modelName '/Fuel_Cell_Stack'], 'OperatingTemperature', '80'); % 工作温度为80°C
    
 set_param([modelName '/Fuel_Cell_Stack'], 'HydrogenPressure', '3'); % 氢气压力为3bar
    
 set_param([modelName '/Fuel_Cell_Stack'], 'OxygenPressure', '3'); % 氧气压力为3bar
    
  
    
 % 添加Boost转换器
    
 add_block('simscape/Electrical/Specialized Power Systems/Power Electronics/Boost Converter', [modelName '/Boost_Converter']);
    
 set_param([modelName '/Boost_Converter'], 'SwitchingFrequency', '50e3'); % 开关频率为50kHz
    
  
    
 % 添加负载电阻
    
 add_block('simscape/Electrical/Specialized Power Systems/Elements/Series RLC Branch', [modelName '/Load_Resistor']);
    
 set_param([modelName '/Load_Resistor'], 'BranchType', 'Res');
    
 set_param([modelName '/Load_Resistor'], 'R', '10'); % 设置电阻值为10Ω
    
  
    
 % 添加PI控制器（可选）
    
 add_block('simulink/User-Defined Functions/MATLAB Function', [modelName '/PI_Controller']);
    
 set_param([modelName '/PI_Controller'], 'FunctionName', 'pi_controller'); % 自定义函数名称
    
  
    
 % 添加电压测量模块
    
 add_block('simscape/Electrical/Specialized Power Systems/Fundamental Blocks/Measurements/Voltage Measurement', [modelName '/Fuel_Cell_Voltage_Measurement']);
    
 add_block('simscape/Electrical/Specialized Power Systems/Fundamental Blocks/Measurements/Voltage Measurement', [modelName '/Load_Voltage_Measurement']);
    
  
    
 % 添加电流测量模块
    
 add_block('simscape/Electrical/Specialized Power Systems/Fundamental Blocks/Measurements/Current Measurement', [modelName '/Fuel_Cell_Current_Measurement']);
    
  
    
 % 添加示波器
    
 add_block('simulink/Sinks/Scope', [modelName '/Scope']);
    
  
    
 % 连接各模块
    
 add_line(modelName, [modelName '/Fuel_Cell_Stack'], [modelName '/Fuel_Cell_Voltage_Measurement'], 'autorouting', 'on');
    
 add_line(modelName, [modelName '/Fuel_Cell_Stack'], [modelName '/Fuel_Cell_Current_Measurement'], 'autorouting', 'on');
    
 add_line(modelName, [modelName '/Fuel_Cell_Stack'], [modelName '/Boost_Converter'], 'autorouting', 'on');
    
 add_line(modelName, [modelName '/Boost_Converter'], [modelName '/Load_Resistor'], 'autorouting', 'on');
    
 add_line(modelName, [modelName '/Load_Resistor'], [modelName '/Load_Voltage_Measurement'], 'autorouting', 'on');
    
 add_line(modelName, [modelName '/Fuel_Cell_Voltage_Measurement'], [modelName '/Scope'], 'autorouting', 'on');
    
 add_line(modelName, [modelName '/Fuel_Cell_Current_Measurement'], [modelName '/Scope'], 'autorouting', 'on');
    
 add_line(modelName, [modelName '/Load_Voltage_Measurement'], [modelName '/Scope'], 'autorouting', 'on');
    
  
    
 % 如果使用了PI控制器，还需连接控制器
    
 if exist('PI_Controller', 'file') == 2
    
     add_line(modelName, [modelName '/Fuel_Cell_Voltage_Measurement'], [modelName '/PI_Controller'], 'autorouting', 'on');
    
     add_line(modelName, [modelName '/PI_Controller'], [modelName '/Boost_Converter/g'], 'autorouting', 'on');
    
 end
    
  
    
 % 设置仿真参数
    
 set_param(modelName, 'StopTime', '0.1'); % 模拟运行时间为0.1秒
    
 set_param(modelName, 'Solver', 'ode45');
    
  
    
 % 保存模型
    
 save_system(modelName);