Types of SMPS
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SMPS (switching mode power supply) converts unregulated AC or DC input to regulated DC output. It first rectifies and filters the input using a capacitor, then feeds the unregulated DC to a high frequency DC-DC converter using a transformer. SMPS are more efficient than linear power supplies due to using switching components instead of dissipative components. Common SMPS topologies include flyback, forward, half-bridge, and full-bridge converters, with flyback being commonly used for power levels below 100W. SMPS provide benefits like multiple isolated outputs, high efficiency, small size, and low cost.
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SIMULATION ANALYSIS OF CLOSED LOOP DUAL INDUCTOR CURRENT-FED PUSH-PULL CONVER...
SIMULATION ANALYSIS OF CLOSED LOOP DUAL INDUCTOR CURRENT-FED PUSH-PULL CONVER...Journal For Research
The current electronic devices require DC power source, which is taken from a battery or DC power supply. DC-DC converter is utilized to get regulated dc voltage from unregulated one. Switched mode power supply (SMPS) are commonly used in industrial applications, because of more advantages compared to linear power supply. In SMPS we have isolated and non-isolated converters, where isolated converters are frequently used, in order to get more voltage with multiple outputs. So among different isolated converters, push-pull converter is chosen for micro converter applications to obtain high voltage conversion ratio by using HF transformer, due to their better utilization of transformer. New methodology of control is implemented for making ZVS and ZCS at same time and to reduce the number of switches in the secondary side of dual inductor CFPP converter, which is a voltage doubler circuit. This becomes the solution for problem identification. Thus this converter with soft-switching reduces the switching losses.The current-fed push-pull converters are used in many applications like photo-voltaic (PV) power converters for boosting the output voltage. Push-pull converter is chosen for micro converter applications, to obtain high voltage conversion ratio by using high frequency (HF) transformer, due to their better utilization of transformer. This deals with the design of dual inductor CFPP converter, where zero voltage switching (ZVS) and zero current switching (ZCS) is achieved for the primary side of the converter by using secondary switches. Primary side switches are controlled by closed loop control topology. The secondary side is made with voltage doubler to obtain high voltage. Open loop and closed loop control of dual inductor current fed push pull converter simulation is finished by MATLAB/SIMULINK and their outcomes are analyzed.
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Types of SMPS
- 1. Types of SMPS Dr. Paras Trivedi Shree J.P. Arts & Science College
- 2. SWITCHINGDCPOWER SUPPLIES INTRODUCTION LINEAR POWER SUPPLY OVERVIEW OF SWITCHING POWER SUPPLIES DC – DC CONVERTER WITH ELECTRICAL ISOLATION CONTROL OF SMPS POWER SUPPLY PROTECTION APPLICATION
- 3. Introduction Like a linear power supply, the SMPS too converts unregulated ac or dc input voltage to a regulated dc output voltage The input voltage is first rectified and filtered using a capacitor at the rectifieroutput unregulated dc voltage across the capacitor is then fed to a high frequency dc-to-dc converter The high frequency transformer used in a SMPS
- 5. Disadvantagesof LPS The output fluctuates with input which is not desirable Isolation is not possible Efficiency is very low Bulky and noisy
- 7. SwitchingDCPowerSupplywith Multiple Outputs In most applications, several dc voltages are required, possibly electrically isolated from eachother
- 10. Types of flyback converters 1.Two transistor flyback converter 2. Parallelled flyback converter
- 11. ForwardConverter Derived from Buck; idealized to assumethatthe transformer is ideal (not possible inpractice)
- 12. Half-Bridge Converter Derived from Buckconverter
- 13. Full-BridgeConverter Usedat higher power levels (> 0.5 kW )
- 14. InputFilter Needed to comply withthe EMI and harmonic limits
- 15. Conclusion • One of the most important applications of power electronics is SMPS • High efficiency and small weight and size • In SMPS multiple outputs are possible • Losses is minimum and only switching losses are present • Current rating is medium • The high frequency transformer used in a SMPS