Greetings! I'm looking for assistance in understanding what's causing the problem in my code.

this is the MATLAB code:

function y = determineMode(teg, pv, pzt, ~, D, ~, ~, ~, ~)

% Inputs:

% teg: Voltage from TEG source

% pv: Voltage from PV source

% pzt: Voltage from PZT source

% battery: Battery voltage

% D: Duty cycle (0 to 1) for switching between buck and boost modes

% Initialize mode to 'Battery' as the default mode

mode = "Battery"; % Default mode as a string

% Declare MOSFET variables

mosfet1 = 0;

mosfet2 = 0;

mosfet3 = 0;

mosfet4 = 0;

% Check available source and set the mode accordingly

if teg >= 0.3 && teg <= 0.4

% TEG source is available, set mode to 'Boost'

mode = "Boost"; % Set mode as a string

% Set MOSFET states for Boost mode

mosfet1 = 1;

mosfet2 = 1 - D;

mosfet3 = 0;

mosfet4 = D;

elseif pv >= 0.4 && pv <= 1.2

% PV source is available, set mode to 'Boost'

mode = "Boost"; % Set mode as a string

% Set MOSFET states for Boost mode

mosfet1 = 1;

mosfet2 = 1 - D;

mosfet3 = 0;

mosfet4 = D;

elseif pzt >= 1.2 && pzt <= 2.0

% PZT source is available, set mode to 'Buck'

mode = "Buck"; % Set mode as a string

% Set MOSFET states for Buck mode

mosfet1 = 1 - D;

mosfet2 = 0;

mosfet3 = D;

mosfet4 = 1;

end

end

[Danikha Shyken]

These errors keep resurfacing whenever I initiate the code.

Answer 1

[Chunru]

y = determineMode(4, 5, 6, 1, 2)

teg = 4

pv = 5

pzt = 6

D = 2

y = 1

y = 1

function y = determineMode(teg, pv, pzt, ~, D, ~, ~, ~, ~)
    % Inputs:
    % teg: Voltage from TEG source
    % pv: Voltage from PV source
    % pzt: Voltage from PZT source
    % battery: Battery voltage
    % D: Duty cycle (0 to 1) for switching between buck and boost modes
    % Initialize mode to 'Battery' as the default mode
    
    teg, pv, pzt, D
    
    mode = "Battery";  % Default mode as a string
    % Declare MOSFET variables
    mosfet1 = 0;
    mosfet2 = 0;
    mosfet3 = 0;
    mosfet4 = 0;
    % Check available source and set the mode accordingly
    if teg >= 0.3 && teg <= 0.4
        % TEG source is available, set mode to 'Boost'
        mode = "Boost"; % Set mode as a string
        % Set MOSFET states for Boost mode
        mosfet1 = 1;
        mosfet2 = 1 - D;
        mosfet3 = 0;
        mosfet4 = D;
    elseif pv >= 0.4 && pv <= 1.2
        % PV source is available, set mode to 'Boost'
        mode = "Boost"; % Set mode as a string
        % Set MOSFET states for Boost mode
        mosfet1 = 1;
        mosfet2 = 1 - D;
        mosfet3 = 0;
        mosfet4 = D;
    elseif pzt >= 1.2 && pzt <= 2.0
        % PZT source is available, set mode to 'Buck'
        mode = "Buck";  % Set mode as a string
        % Set MOSFET states for Buck mode
        mosfet1 = 1 - D;
        mosfet2 = 0;
        mosfet3 = D;
        mosfet4 = 1;
    end
    
    % need to define the output
    y = 1;
end