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Design and Implementation of Centralized Controller for Modular Photovoltaic Inverter

Author: ZengZuo
Tutor: ShenGang
School: Huazhong University of Science and Technology
Course: Software Engineering
Keywords: Modular photovoltaic inverter Centralized control system Serial communication
CLC: TM464
Type: Master's thesis
Year: 2010
Downloads: 67
Quote: 0
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Abstract


In recent years, the solar power technology is regarded as the most promising green energy generation technologies . The core of the solar power system is a group of photovoltaic inverters . Relative to traditional centralized PV inverter , the modular photovoltaic inverter has advantages of high reliability , easy maintenance , as well as online capacity expansion , is a very promising PV inverter . As the need for a unified modular photovoltaic inverter control power generation module MPPT (Maximum Power Point Tracking, maximum power point tracking ) , select the appropriate operating mode , to detect run failure and to control the overall cooling of the entire PV inverter modular photovoltaic inverter set up a centralized control system has a very important significance . According to the working characteristics of the modular photovoltaic inverter , after analysis and comparison to Microchip the company 's PIC24FJ64GA006 microcontroller as the core , supplemented temperature logger , key panel , and communication interface chip peripherals to build a centralized control system hardware platform ; same time, select MCU supporting MPLAB IDE integrated development environment , using the C language system software . Passing data between the centralized control system with the photovoltaic module , as well as a higher level of remote monitoring system using a serial communication technology , specifically, between the centralized control system and the power generation module using the SPI (Serial Peripheral interface, serial peripheral device Interface) communications technology , with the communication between the remote monitoring system using RS232 communications technology . Centralized control system in the entire modular photovoltaic grid inverters intermediate level , connected to the bottom of the power generation module as well as a higher level of remote monitoring system . Centralized control of the main functions of the system to receive the power generation module upload data processing to generate a variety of instruction , under the reach of each module to guide each module MPPT shifting transformer , the system of economic operation , as well as the overall cooling of the inverter ; PV inverter running data uploaded to a remote monitoring system in accordance with the instructions issued by the remote monitoring system , when the system fails to make a preliminary alarm signal ;

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CLC: > Industrial Technology > Electrotechnical > Transformers, converters and reactors > Converter > Inverter
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