Forward Converter With Demagnetizing Winding — Simulation & Power Modeling

Abstract — Forward Converter With Demagnetizing Winding

Forward Converter With Demagnetizing Winding: Power Electronics, MATLAB/Simulink & Circuit Modeling Integrated Analysis: MATLAB/Simulink · MOSFET/IGBT Gate Drivers · SPWM/SVPWM · THD Spectrum · ~4255 Words Chapter 1: Power Electronics Overview, System Specifications & Topology Modeling Forward Converter Design in Simulink: In last tutorial about simulink we posted a design on dc to dc buck converter using simulink . In this article, we are going to learn how to design dc to dc forward converter with simulink. The forward converter is a dc to dc converter that uses the transformer for step up or step down the dc output voltages. In a simple dc to dc converter, we increase or decrease the dc output voltages by increasing or decreasing the duty ratio of on/off switch, but we can change this duty ratio within certain limits. If we do not care about these limits then our dc to dc converter will not work properly. Here we will say to thanks to transformer which have done easy our life.

Analytical & State-Space Control Methodology

By using this transformer, we can easily gain the dc output voltages at our requirement means step up or step down the voltages or both can gain simultaneously. This transformer, not only provides the step up or step-down voltages as well as it also provides the galvanic isolation between the load and input side of converter. Here we will design a forward converter in MATLAB Simulink and tell how we make a model as well as how select the circuit components. For designing a forward converter in MATLAB first we will open the MATLAB then click on Simulink library. The Simulink library will be opened with different options shown is figure 1 But first we will make a new model and for this we will click on new model, after that, we will save this model with desired name. Simulink library have different blocks of each components such as transformer, MOSFET, pulse generator and voltmeter shown in figure 1. For searching any block of any component just write the name of component on search Manu bar will make a forward converter design. First, we will write transformer then transformer blocks would be opened shown in figure 1. we will select the linear transformer block which have three winding then we will double click on this block then linear transformer parameter block would be opened shown in figure 2 Figure 1: Power Converter Circuit Schematic & Electrical Interfacing for Forward Converter With Demagnetizing Winding Here we will make the forward converter in buck mode therefore change in winding turns according to figure 2. Similarly, we will write the power electronics on search Manu bar then power electronic blocks would be opened shown in figure 3, Similarly, we can open all the other blocks such as dc power supply, inductor, capacitor, voltmeter, Ammeter, oscilloscope, pulse generator, display etc. and parameters are set just double clicking on each block. Then, just drag all these blocks on new model in such a way shown in figure 4. Joint all these blocks just by click on each block and then joint with other block shown in figure 4.

Simulink Waveforms & Power Quality Findings

Chapter 2: Semiconductor Dynamics: MOSFET & IGBT Switching Characteristics & Losses For simulate this model just click on run button which is present at MATLAB Simulink Manu bar We would be simulated this model at 50% duty cycle after setting the supply voltage 100V, transformer turn ratio 30/100, switching frequency 20KH, inductor value 1 mH, capacitor value 100µF and connecting 20Ω resistor as an output load. By output voltage value is 14.2 shown in figure 1 display 1 means it is near to 15. Similarly, we can check this model after running at different duty cycles. The output voltage, inductor current and switching pulse is shown in figure 5 So this is all about design and analysis of forward converter with simulink. I hope you liked this article and keep visiting our website for more simulink based tutorials and projects.

Scope & Practical Applications

• High-efficiency DC-DC converters and isolated resonant topologies (LLC / DAB)
• Sinusoidal and Space Vector PWM inverters for grid integration & industrial motor drives
• MOSFET / IGBT gate driver optimization with active Miller-clamp shoot-through protection
• Power quality conditioning with Total Harmonic Distortion (THD) strictly compliant with IEEE 519
• Complete Simscape .SLX model files, parameter calculation scripts, and IEEE dissertation reports