Input voltage sliding mode control of the versatile buck-boost converter for photovoltaic applications

Abstract

The versatile buck-boost c interesting features, such as continuous i currents and ease of control in both step-u models. This paper addresses its use in low v applications where the nonlinear current sou characteristic of the PV module requires the in capacitor in the original power stage structure regulation of this additional input capacitor v considering a linear combination of the capa voltage error, and the integral of the volt switching function. The performance of the d that has been tested by simulation indicates th combined with a conventional maximum pow (MPPT) algorithm of perturb and observe type 978-1-4799-7800-7/15/$31.00 ©2015 IEEE

Passivity voltage based control of the boost power converter used in photovoltaic system

“…From management structure of (8), the acquisition port is (u T y) [8]. Using evaluating the rate of change energy and version of Kalman-Yakubovich-Popov lemma [21][22][23][24][25][26], we easily see that PCH model is passive because:…”

Coupled inductors design of the bidirectional non‐inverting buck–boost converter for high‐voltage applications

“…Coupled inductors can be defined and constructed in different ways. In the photovoltaic application reported in [24], the coupling coefficient is defined as , where M is the mutual inductance, and and are the self‐inductances of the primary and the secondary coils, respectively. In both [24, 12], a 1:1 transformer was constructed with a pair of tightly coupled inductors of turns ratio and a magnetising inductance .…”

“…In the photovoltaic application reported in [24], the coupling coefficient is defined as , where M is the mutual inductance, and and are the self‐inductances of the primary and the secondary coils, respectively. In both [24, 12], a 1:1 transformer was constructed with a pair of tightly coupled inductors of turns ratio and a magnetising inductance . Two identical non‐coupled inductors were connected in series with the primary and the secondary of the transformer, where , and , and therefore .…”

“…A continuous conduction mode (CCM) operation for the converter is considered in the analysis. Using the differential equations of the state variables expressed in [24] and the use of the SSA method to the following expressions for the state variables of the proposed converter from Fig. 1 b : …”