Abstract:

As a new reactive power compensatory device,STATCOM is real-time,quick,and accurate but requires the quick and accurate collection of three-phase voltage and current signal.To this end,a leading-end signal-collecting circuit based on AD7606-6 is designed.Firstly,the basic structure and working principles of STATCOM are introduced.And then,the characteristics,pin function and sequential logic of parallel-data-output are discussed.Finally,the signal conditioning circuit and interface circuit between AD7606-6 and TMS320F2812 are designed.The software-design section is also given.The test experiments show that this collecting module can meet STATCOM's requirement of collecting electric parameter.

Key words: AD7606-6;STATCOM;electric signal collect;TMS320F2812