双NIOSⅡ软核系统在潮流能发电中的应用

开发海洋潮流能对缓解能源危机具有重要意义，电力变换系统是潮流能发电系统的关键技术之一。提出了一种利用SOPC技术实现潮流能发电电力变换控制系统的设计方法，采用单片高性能FPGA芯片构建双NIOSⅡ软核系统，其中一个NIOSⅡ处理器负责系统任务调度和能量管理，一个NIOSⅡ处理器负责电力变换控制和异常诊断。针对电力变换系统的信息数据特点，提出了基于RAM、FIFO、GPIO的双NIOSⅡ处理器握手机制，并给出了系统的具体设计实现。该双NIOSⅡ处理器系统提高了系统的任务调度灵活性、控制算法处理速度和应急处理能力。

Dual NIOS II Soft Core System in the application of the Tidal Current Energy Generator

Development of marine tidal energy is of great significance to relieve the energy crisis. The power conversion system is one of the key technologies of tidal current energy generator system. A method which can realize power transformer of tidal cur-rent energy generator by using SOPC technology is presented. Single piece of high performance FPGA chip is used to construct the dual NIOS II soft core system, one is responsible for system task scheduling and energy management, the other is used in power conversion and abnormality diagnosis. According to the characteristics of information data in power conversion system, a handshake mechanism which is based on RAM, FIFO, GPIO dual NIOS II processor is put forward and the specific design and implementation of this system is given. The dual NIOS II processor system improves the flexibility of task scheduling, increases the speed of control algorithm and enhances emergency handling ability.