Figure 1:
Block diagram of UV LED with sensor.
Figure 2:
Block diagram of UV LED lamp with controller.
Figure 3:
Functional block diagram of P&O method. P&O, perturb-and-observe.
Figure 4:
Proposed converter circuit.
Figure 5:
MPPT algorithm. MPPT, maximum power point tracking.
Figure 6:
Equivalent circuit for step-down mode.
Figure 7:
Equivalent circuit for step-up mode.
Figure 8:
Step-down mode 1.
Figure 9:
Waveform for step down.
Figure 10:
Step-down mode 2.
Figure 11:
Step-up mode 1.
Figure 12:
Waveform for step-up operation.
Figure 13:
Step-up mode 2.
Figure 14:
Proposed UVC sterilizer lamp circuit.
| S. No. | Component | Value |
|---|---|---|
| 1 | Inductor LA | 0.1 mH |
| 2 | Inductor LB | 0.1 mH |
| 3 | Capacitor CA | 100 μC |
| 4 | Capacitor CB | 10 μC |
| 5 | Capacitor CEB | 100 μC |
| 6 | Capacitor C0 | 470 μC |
Figure 15:
UV array ON condition.
Figure 16:
UV array ON condition.
Figure 17:
UV array OFF condition.
Figure 18:
UV array OFF condition.
Figure 19:
PV voltage and PV current.
Figure 20:
Input current and inductor LA current.
Figure 21:
Gate pulses (QA and QB).
Figure 22:
Inductor currents (LA and LB).
Figure 23:
Switch currents (QA and QB).
Figure 24:
LED current and LED voltage.
Embedded C coding