by razman.ayop | Nov 2, 2019 | Research Guidance
The recommended current sensor is the LEM LA55. It is a closed loop hall effect sensor capable of measuring DC and AC. It can measure up to 50 A or 100 A (2 different design). However, for this tutorial, the design is based on 50 A. The number of primary turns, Npri,...
by razman.ayop | Oct 2, 2019 | Research Guidance
The recommended voltage sensor is the LV25 from LEM. It is a closed loop sensor. capable of measuring DC and AC with the maximum voltage of 500 V. Do not use this sensor if the voltage is more than 500 V. Rpri depend on the maximum Vmeasure: Rpri = 100 Vmeasure The...
by razman.ayop | Oct 2, 2019 | Research Guidance
How to Set the Sample Time for Power Converter Click Simulation (Upper Site)> Model Configuration Parameter>Solver>Solver Option=Variable Step> Additional Options: Max step size= 1e-6 1e-6 is the standard. The minimum “Max step size” is: Max Step Size...
by razman.ayop | Oct 2, 2019 | Research Guidance
This is important especially for inverter with custom PWM. In general, the minimum sample time is: Sample Time <= Minimum On Time of Switching Pulse or Sample Time <= Minimum Duty Cycle / Switching Frequency Here is the effect of difference sample time on...
by razman.ayop | Oct 2, 2019 | Research Guidance
For official reference, please read Nyquist rate. The relationship between the controller and the sample time is: Sample Time <= Fastest Settling Time / Minimum Number of Sample Recommended minimum number of sample is 30. Higher is better. Fastest settling time is...
by razman.ayop | Oct 2, 2019 | Research Guidance
The objective is to convert the simulation: into hardware implementation:
by razman.ayop | Sep 22, 2019 | Research Guidance
Boost Converter with Analog PI Controller (Used only Op Amp & 555 Timer) Link: https://www.mathworks.com/matlabcentral/fileexchange/67324-boost-converter-with-analog-pi-controller?s_tid=prof_contriblnk Boost Converter with Analog PI Controller. The PI controller...
by razman.ayop | Sep 19, 2019 | Research Guidance
Basic open-loop non-Isolated Buck-Boost Bidirectional Converter Calculation for Continuous Current Mode Operation. Link: https://www.mathworks.com/matlabcentral/fileexchange/72327-buck-boost-bidirectional-converter-calculation?s_tid=prof_contriblnk Based on the...
by razman.ayop | Sep 18, 2019 | Research Guidance
The PI controller with anti windup (clamping) is implemented using code. Link: https://www.mathworks.com/matlabcentral/fileexchange/67523-pi-controller-based-on-code?s_tid=prof_contriblnk When the PI controller is implemented into hardware, the conventional PI...
by razman.ayop | Sep 15, 2019 | Research Guidance
Load for DC output power converter. Useful for test capability of converter during load disturbance. Link: https://www.mathworks.com/matlabcentral/fileexchange/66003-multi-purpose-dc-resistive-load?s_tid=prof_contriblnk The type of load include: – Fixed load....
