The classical GLC law is comprised of a transformer (input-output linearizing state feedback), a nonlinear state observer, and an external PI controller.
When the transformer is operated with alternating voltage in the non-resonance frequency range, which can be a few hertz, the transformer input works as an actuator, and the isolated output as a sensor to step-down the voltage.
In this setting, it is shown that the transformer input impedance can at high frequencies greatly influence the shape of the impinging overvoltages, thereby giving a self-protective effect against incoming overvoltages.
The modeling approach is based on accurate 3D finite-element thermal simulation of the transformer structure; inputs to the finite-element thermal model are the magnetic and electrical power losses extracted by experimental characterization of a planar transformer test-bench we designed and assembled.
Furthermore, to improve the output power of the HP transformer, the input air pressure, output oil pressure and area ratio should be increased.
The performances of such hands, regarded as mechanical transformers of inputs as forces and speed into outputs as object wrench and displacements, are assessed by suitably defined manipulation indices.
Just to mention a few, phase noise of the signal generators, proper power supply decoupling, single-ended versus differential input configurations, capacitor versus transformer coupling of input and clock signals.
The boosting of output voltage contributes to lessen the transformation ratio of the input transformer or even eliminate it, thereby reducing the cost, which will benefit the design of converters in medium high voltage applications.
The methodology is based on applying terminal transformer voltages as input parameters that could be provided by using the powerful black box vector fitting.
Further, the use of a standard six-pulse SCR based rectifier eliminates the bulky and expensive input transformer, thus reducing the overall system cost.
