Research On Utilization Of Distributed Energy And The Conversion Technology In Buildings

Currently, the energy and environmental issues are increasingly serious, anddeveloping and utilizing of new energy sources has been an important means to solvethis problem. The problem of building energy consumption in China has beenparticularly prominent, and building energy saving has become one of the priorities. Itis not only to meet the needs of construction on the power, but also can reduce theenergy consumption of traditional architecture and environmental pollution to blendthe distributed renewable energy power generation system into the modern building,and it has become a research hotspot.First, introduced the renewable energy utilization status, and determine to adoptthe wind-solar hybrid power generation for distributed power generation by comparingthe types of distributed generation prime mover. Then, introduced the structure andworking principle of the wind-solar hybrid power generation, and the various systemscomponents. Particularly introduced the working principle and characteristics of solarphotovoltaic cells and wind turbines, and analyzed the working principle of lead-acidbatteries and charging characteristics. Applied the fuzzy control technology to batterycharging control, for modeling difficult issues of the nonlinear and time variabilitybattery charging process.Again, determined to take the three-phase full-bridge topology as the main circuitof the inverter by analyzing the distributed PV power generation system and loadrequirements and the common type of the inverter. Introduced two commonpulse-width modulation way: SPWM and SVPWM, and highlights the seven-segmenttype SVPWM principle and method of control. Simulated the three-phase full-bridgeinverter controlled by seven-segment type SVPWM, and get the ideal three-phase ACpower,which meets the power quality and efficiency requirements of the wind-solarhybrid power generation.Finally, designed the regenerative energy utilization of lift. By analyzing thegenerated principle of pump-liter voltage within innverters, comparing to thetraditional way of feedback, combined with the structural characteristics of thedistributed wind-solar hybrid power generation system, Proposed the idea offeedback the regenerative energy to the high-voltage DC bus of the wind-solar hybrid power generation. Simulated the principle of the main circuit topology of thefeedback device and calculation of parameters using PSPICE, and achieve goodenergy conversion goals. With digital control technology, designed the digital controlsystem taking TMS320LF2407A as the core of the feedback device.