IMPROVED CURRENT
SOURCE IMPEDANCE RATIO CRITERION FOR STABILITY ANALYSIS
For impedance matching, the maximum transfer of power happens when the load impedance is equal to the complex conjugate of the
source impedance. Thus, the objective of any impedance matching technique to ensure the load impedance to be equal or close to the complex conjugate of the
source impedance [36].
Our group showed that the WPT system can achieve the high PTE by adjusting only the
source impedance [8], and we also demonstrated the self-adaptive WPT system achieving the high PTE without the feedback of receiver information [9].
The terminated
source impedance [R.sub.S] at port 1 and the load impedance [R.sub.L] at the output ports 2 and 3 are randomly chosen as [R.sub.S] = 30 [OMEGA] and [R.sub.L] = 50 [OMEGA].
Through a p-q length of transmission line from the window to the point P, the equivalent source [v.sub.4] and
source impedance [Z.sub.4] are given by
We assume that [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] (f) is identical for all appliances, that is, [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] (f) = [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] for all d [member of] {1,..., D}, and we neglect the
source impedance, that is, we let [Z.sub.d] (f) = 0.
Among their topics are EMI filter
source impedance of various power lines, pros and cons of typical EMI filters, electromagnetic pulse and voltage transients, what will compromise the filter, filter design techniques and design examples.
These error sources include input offset current, voltage burden, generated currents, and low
source impedance.
The system in Figure 3 can be used to study the influence from the
source impedance on the apparent impedance as seen by a relay located at bus T during power swings.
Transmission efficiency will be maximum when [Z.sub.1] = [Z.sub.2] i.e maximum power is radiated from source to load when
source impedance is equal to load impedance.