Author: Vijay
-
Transformer Losses Explanation and Its Equations Derivation Fundamentals
Losses occurs in the transformer by its core and conductor materials. These are named as Core losses are depends on the only core properties and these are sub-divided into Hysterisis and eddy current losses. Copper losses are depends on the only conductor properties i.e. wire. Hysteresis Losses When we place the magnetic core around a…
-
Different flux wavefroms and variation of its RMS EMF equations
Average value of EMF for a transformer primary coil is Sinusoildal Flux Form factor is 1.11. Hence, RMS EMF Bipolar Square Flux Form factor is 1. Hence, RMS EMF Unipolar Square Flux The average EMF for unipolar square flux is Form factor for unipolar flux is 1, therefore RMS EMF is
-
Derivation of Transformer Core Area Product and Number of turns Equations used in Design Procedure
Area Product (AP) of core and number of turns (Np and Ns) for winding on core are two main equations which used in transformer desing procedure Area Product (AP) Area product is nothing but product of two areas, here in magnetics design, it’s a cross-sectional area and window area. Current carrying conductor/wire is an electrical…
-
Transformer Design Flow Chart
Trabsformer design procedure is an important to follow for calculating number of turns on primary and secondary side along with leakage inductance values with a proper isolation. These steps depends mainly on 3 things The complete design steps and flow shown in below flowchart for better understanding.
-
Diode Vs Synchronous Rectifier Switch Losses
Diode is replaced by a power MOSFET in any converter, that particular MOSFET is called synchronous rectifier MOSFET Uses: Reduce the conduction losses —> Converter efficiency increaes Example: Let’s assume current flowing through the device is “20 A” when it is conducting. Diode MOSFET In general, diodes have the fixed forward voltage drop in range…
-
DC-DC Converters: Why Resonant Converters? How these are benficial than PWM Converters?
DC-DC converter: The converters which takes DC and it steps-up or steps-down that DC value in same form. If it steps-up the input voltage is called step-up DC-DC converter. If it steps-down the input voltage is called step-down DC-DC converter. The power generation of renwable energy sources like solar are vary in nature due to…
-
Phase-shift full-bridge (PSFB) Resonant Converter with Current Doubler: Circuit & Operation
-
Overview of operating modes in PSFB Resonant Converter Operation
The PSFB resonant converter full-cycle operation divided into 10 operating modes: (t0 – Ts). All modes in this cycle are divided into mainly 4 modes At any period of time in the operation belongs to above any one of mode. Power Transfer Mode In this mode, only diagonal active switch pair conduct (S1, S2) or…
-
Resonant Inductor
Resonant inductor selection is depends on many crucial factors {Power transfer capability, Dead time, ZVS }= function (Resonant inductor) Power Transfer Capability The power transfer capability of a converter is depends on the how much time the active switches are turned-on to deliver the energy to load. The mode (t4 – t7) in PSFB converter operation have the…
-
Inductor Associated Losses & it’s Equations
The losses related to an inductor can be categorized into two types. One type is entirely dependent on the properties of the core material, while the other type relies solely on the characteristics of the conductor and current flowing through it. Copper losses When a magnetic bar is inserted into an current carries conductor and…
