Contents
How to determine the inductance of a wire?
Must obtain specified inductance L. We know that the inductance is This is constraint #2. The turns ratio n, core area Ac, and air gap length lgare unknown. L=n 2 R g = µ 0 A cn2 l g Fundamentals of Power Electronics Chapter 14: Inductor design6 14.1.3 Constraint: winding area core window areaW A wire bare area A W core
How are the windings of a three phase cm inductor wound?
The three-phase CM inductor is made out of three windings in parallel and is wound in the same direction as the CM currents. Therefore, as for a conventional DM inductor, the self- inductance of the windings around the ferromagnetic core is dependent on the real part μ of the complex permeability μ¯ [18].
What is the fill factor of an inductor?
A wire bare area A W core Wire must fit through core window (i.e., hole in center of core) nA W Total area of copper in window: K u W A Area available for winding conductors: Third design constraint: K u W A≥nA W Fundamentals of Power Electronics Chapter 14: Inductor design7 The window utilization factor Ku also called the “fill factor”
What are the constraints for an IMAX inductor?
14.1.1 Constraint: maximum flux density Given a peak winding current Imax, it is desired to operate the core flux density at a peak value Bmax. The value of Bmaxis chosen to be less than the worst-case saturation flux density Bsatof the core material.
How to calculate number of turns and length for inductor?
An inexpensive LCR meter will be an invaluable tool. Back in the day, a mica capacitor of known value was paralleled with an unknown inductor and the resonant frequency measured with a variable frequency oscillator and a voltmeter. From the known resonant frequency and the known capacitor value the unknown inductance can be calculated.
How long does it take to design an inductor?
You have to have some idea of what you are doing before you can launch into designing your own inductors. It will take about 10 years of circuit designing to get to the stage of starting to design your own inductors. It will take about 10 years of circuit designing to get to the stage of starting to design your own inductors. Click to expand…