最优最小开关损耗SVPWM地板水暖变频调速系统  

Floor water-heating variable frequency speed control system using optimized minimized switching loss SVPWM

作　　者：杨喜军[1] 蒋婷[1] 佘焱[1] 

机构地区：[1]上海交通大学电子信息与电气工程学院,上海200240

出　　处：《电机与控制学报》2011年第6期25-31,37,共8页Electric Machines and Control

基　　金：国家自然科学基金(60934005)

摘　　要：为了提高地板水暖系统的整体性能,除了考虑管道系统的设计和水泵本身机械特性,还要考虑水泵电机变频调速系统的效率。针对提高电机变频调速系统效率的问题,在分析电压源逆变器多解性的基础上,分析几种最小开关损耗电压空间矢量脉冲宽度调制策略,提出一种最优化的解决方案,并应用于永磁同步电机-变频调速地板水暖系统,给出相应的开关损耗计算公式,采用Matlab/SIMULINK进行仿真分析,并基于TMS320F2401设计和实验整个变频调速地板水暖系统。实验结果表明,永磁同步电机-变频调速地板水暖系统中采用最小开关损耗电压空间矢量脉冲宽度调制策略是可行的,降低了有效开关次数的1/3。对于额定功率50 W负荷而言,相比非最优电压空间矢量脉冲宽度调制策略,开关损耗降低2 W左右,电压源逆变器变换效率提升4%左右,改善了工况。To improve the overall performance,besides the considerations of ductwork designs and water pump mechanical characteristics,attention should be drawn to increasing the water pump motor variable frequency speed control system＇s efficiency.On the basis of the analysis of the multiple solution property for voltage source inverter,several minimized switching loss-space vector pulse width modulation（SVPWM） strategies were analyzed,and an optimized solution was presented and applied to the permanent magnet synchronous motor（PMSM）-variable frequency speed control system dedicated for floor water-heating,and the driving system was simulated by means of Matlab/SIMULINK.In addition,switching loss formula was derived,and the driving system was designed and implemented with TMS320F2401.Based on the experimental results,it is indicated that the optimized minimized switching Loss-SVPWM modulation strategy is feasible in the floor water-heating driving system,with 1/3 switching number reduced.Take the load with rated power of 50W for example,compared to the non-optimized SVPWM modulation algorithms,the switching loss can be decreased by 2W or so,and the inverter efficiency can increase by 4% or so,bringing about an improved working condition.

关 键 词：地板水暖 永磁同步电机 变频调速 最小开关损耗SVPWM 变换效率 

分 类 号：TM301.2[电气工程—电机]