The Research And Realization Of Controller On Photovoltaic Pump System

The research and realization of controller on photovoltaic(PV) pump system belongs to the project of advanced teachnology on reproducible energy from national development and reform commission. After decades of development ,PV pump system has become an important part of solar energy applications. Furthermore, with its tremendous social and economical advantages, PV pump system has been getting more and more attention.Asynchronism electromotor is used as driving motor in this system, solar cell wind generator and storage battery can be power supply. This paper will introduce DC/DC push-pull inverter DC/AC IPM converter and control circuit based on dsPIC30F2010. PV pump system max power point tracking (MPPT) and space voltage vector PWM control strategy are studied in this paper. The main content in this paper is:1) Analyze and compare the structure performance and characteristic of different PV pump system.2) Research the way of PV pump system max power point tracking control,and adopt SVPWM technology to realize steady and rapid control of system.3) Design low speed protection overload protection - low voltage protection and automatic protection when the water level on well is low for system.4) Design the main circuit structure and control strategy that can use solar cell wind generator and storage battery as power supply.5) Particularly introduce the calculation and choice of component parameter on main circuit.6) Made a specimen for system and get nice experiment result from large numbers of experimentation with real situation.