Considering the
transformer loss, it is a aperiodic component and decays with time.
In this case, a 250:50 [ohms] impedance transformer is required for each output port and an extra measurement is required to measure the
transformer loss for each output port in addition to the port's insertion loss/gain measurement.
Reference [3] used a standardized engineering approach according to IEEE Standard C5791 [4] to preliminarily assess the impact of increased ambient temperature on
transformer loss of life at five locations in the USA.
Optimization of transformer design for high efficiency and high-power density converter is subjected to the reduction of overall
transformer losses. These losses are composed from losses in windings and losses in transformer core (hysteresis losses, eddy currents).
Thus, the value engineered solution with 13.8kV/60Hz again saved not only the initial cost by the elimination of transformers, but also operating cost was saved by avoiding 2 to 3 per cent
transformer losses.
For example, accounting for
transformer losses, a 15-kVA AC source will require a 17-kVA three-phase input transformer weighing approximately 140 lb.
"The unbalanced load cost on
transformer losses at a distribution system" Stockholm, pp: 10-13.
Comparison of distribution
transformer losses and capacity under linear and harmonic loads.
Transformer Losses The losses occurring within the DC/DC distribution converters.
At low wind speeds the
transformer losses are dominant; see Figure 8.
The effects of harmonic components on
transformer losses of sinusoidal source supplying nonlinear loads, American Journal of Applied Sciences, vol.