TY  - MGZN
AU  - Lopez-Lapeña, O.
T2  - IEEE transactions on industrial electronics
Y1  - 2018
VL  - 65
IS  - 12
SP  - 9668
EP  - 9676
DO  - 10.1109/TIE.2018.2821622
UR  - https://ieeexplore.ieee.org/document/8328876/
AB  - Many autonomous sensor nodes use small photovoltaic (PV) panels oriented towards the direction that provides the highest energy yield in the worst-case scenario. Since all those panels operate at similar irradiance and temperature conditions, they can be properly biased at the same bias point by using a single maximum power point tracker (MPPT). But in those applications involving several PV panels with dissimilar orientations, using an MPPT tailored to each panel would increase system cost. A better design option is to implement the MPPT with a single multiple-input converter (MIC) shared through time-division multiplexing (TDM) control. However, existing TDM controls are usually based on pulse width modulation (PWM) converters wherein the high switching frequency of transistors results in power losses that are excessive for low-power systems. Consequently, low-power MPPTs are usually based instead on pulse frequency modulation (PFM) converters. This paper proposes a novel TDM control method for MPPTs based on PFM converters.
PB  - Institute of Electrical and Electronics Engineers (IEEE)
TI  - Time-Division Multiplexing Control of Multi-Input Converters for Low-Power Solar Energy Harvesters
ER  -