光伏发电控制模块.docVIP

IEEE TRANSACTIONS ON POWER ELECTRONICS, VOL. 16, NO. 3, MAY 2001 2012-3-13 Generation Control Circuit for Photovoltaic Modules Toshihisa Shimizu, Member, IEEE, Masaki Hirakata, Tomoya Kamezawa, and Hisao Watanabe 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 set-up used in the present study. Index Terms—AC interactive inverter, multistage chopper, photovoltaic module. RECENTLY, awareness of the importance of protecting the global environment has been growing, leading to calls for progress in the effective use of energy in various fields. As a result, not only methods for saving energy, but also the development of the new energy sources has been investigated. PV cells are currently considered to be a new energy source, and a great deal of research has been conducted in this field over the last few decades. As a result, the major disadvantages previously associated with the application of PV power