Generation control circuit for photovoltaic modules

Abstract

Photovoltaic modules must generally be connected in series in order to produce the voltage required to efficiently drive an inverter. However, if even a very small part of photovoltaic module (PV module) is prevented from receiving light, the generation power of the PV module is decreased disproportionately. This greater than expected decrease occurs because PV modules which do not receive adequate light cannot operate on the normal operating point, but rather operate as loads. As a result, the total power from the PV modules is decreased if even only a small part of the PV modules are shaded. In the present paper, a novel circuit, referred to as the generation control circuit (GCC), which enables maximum power to be obtained from all of the PV modules even if some of the modules are prevented from receiving light. The proposed circuit enables the individual PV modules to operate effectively at the maximum power point tracking, irrespective of the series connected PV module system. In addition, the total generated power is shown experimentally to increase for the experimental setup used in the present study. Index Terms-AC interactive inverter, multistage chopper, photovoltaic module.

Transformerless topologies for grid-connected single-phase photovoltaic inverters

“…Half bridge with GCC [34] is based on a half-bridge inverter with two more additional transistors, which makes it possible the independent maximum power point tracking of the photovoltaic strings [35]. A schematic of this topology is depicted in Fig.…”

Simulation and Implementation of Solar Powered Electric Vehicle

“…A photovoltaic panel is developed by connecting many solar cells in series and parallel. A single photovoltaic cell can be modeled by utilizing current source, diode and two resistors as shown in Figure 1 [10] [11].…”

Optimal control of a multilevel DC-link converter photovoltaic system for maximum power generation

“…Although tests have shown that this approach results in more power output than in the directly connected PV sources, the cluster which generates the least power will be bypassed completely. The third scheme, named the 'Generation Control Circuit' (GCC), uses a type of multilevel DC/DC converter with multiple DC/DC converters connected in series, each powered by a PV source [8]. The individual converter may be a buck-boost type and can be controlled to extract power from the PV sources and deliver it to the load directly.…”