A voltage optimization objective is defined by the sum of the squared
error voltage equation (Gherbi et al., 2014).
Figure 7 shows
error voltage between X and Y terminals for different values of Vy.
The
error voltage is compared against the current signal, which is sum of inductor current signal and ramp compensation signal, at PWM input.
The
error voltage or error current in a converter is taken as [psi].
When the inverter is connected to the Boost converter, the output of the voltage
error voltage amplifier saturates at 5.8 V.
One have to add to the relations above the functioning relations of the controller which reflect the dependence between the
error voltage [U.sub.[epsilon]] and the controller output voltage [U.sub.reg], and although the voltage-current converter equation.
-- -- Umax 4.0 Umax 3.7 Table 2 : Percentage of restored voltage and
error voltage correction Voltage Correction by Polar Correction by PI Sags Controller Controller Restorarion Error Restoration Error 50%GF 98.5% 1.5% 95% 5% 70%GF 98% 2% 95.6% 4.4% 30%2F 95% 5% 92% 8% 50%2F 97.5% 2.5% 96.6% 3.4% 70%2F 100% 0% 97.2% 2.8% 30%2FG 95% 5% 92% 8% 50%2FG 97.5% 2.5% 97% 3% 70%2FG 100% 0% 96.2% 3.8% 30%3F 92.5% 7.5% 92% 8% 50%3F 98% 2% 95% 5% 70%3F 99% 1% 97.5% 2.5%
This model generates frequencies between 1500 and 1800 MHz within 0.25 to 4.75 VDC of control voltage, making it attractive for quick implementation into PLLs where the
error voltage can be taken directly from the ICs charge pump circuitry.
The
error voltage curves of the signal conversion (gain) as calculated for the summing Junction of the OA2 for an output signal of [V.sub.o] = IV are shown in Fig.