摘要
介绍一种新型的基于软开关投切技术的连续无功补偿装置,设计出适用于该方案的基于ARM嵌入式微处理器的无功补偿控制器。针对传统电力参数检测系统不具备现代操作系统管理功能的要求,采用了一种基于32位ARM7TDM I嵌入式微处理器S3C44B0X和μC/OS-Ⅱ实时操作系统内核的交流同步采样方法。该方法将采样过程分为频率动态跟踪和等间隔同步采样两部分,分别由优先级不同的多个任务完成信号采样和数据处理,各任务由抢占式的μC/OS-Ⅱ统一调度管理,较好地解决了精确性和实时性的矛盾。采用ADS7864电力专用A/D芯片,简化了硬件接口电路。详细给出了控制器硬件和软件设计流程。。
This paper presents a new type of continuous reactive compensator based on a soft switc-hing technique and the design of an ARM-based controller. The technology of AC synchronization sampling is applied to the compensation system based on the S3C44BOX embedded microprocessor with the 32 -bit ARM7TDMI core and the kernel of the μC/OS-Ⅱ real-time operating system. The technology divides the sampling process into 2 parts, i. e. frequency dynamic tracking and same interval synchronization sampling. The multi-task with different priorities is used to actualize sampling the signal and handling the data. All tasks are scheduled by the preemptive μC/OS-Ⅱ kernel. The technology can decrease the contradiction between the precision and the real-time property. A dedicated A/D chip is used to simplify the interface circuit. The hardware design and software flow chart are illustrated.
出处
《工业仪表与自动化装置》
2007年第6期18-21,24,共5页
Industrial Instrumentation & Automation
基金
安徽省科技厅重点科研项目"新型中高压连续无功补偿装置及非正弦电度表的研制"资助(5022042)
