袁慧梅.非正弦无功功率计算的FPGA设计与实现[J].电测与仪表,2012,49(1):90-93. YUAN Hui-mei.Reactive Power Measurements in Non-sinusoidal Conditional Based on FPGA[J].Electrical Measurement & Instrumentation,2012,49(1):90-93.
非正弦无功功率计算的FPGA设计与实现
Reactive Power Measurements in Non-sinusoidal Conditional Based on FPGA
在分析了非正弦无功功率数学模型的基础上,提出了非正弦无功功率计算的FPGA模型。利用Altera公司的FFT IP Core估算各次谐波的幅度和相位,并设计了乘积之差模块用来实现无功功率的数学计算,同时设计了移位电路模块和累加器模块用来完成数据的修正和无功功率的累加。利用VHDL语言实现了各个功能模块,并通过QuartusII软件对系统进行仿真验证,最终结果应用到某电能计量芯片的ASIC设计中。理论计算和仿真结果表明,该设计具有较高的计量精度。
英文摘要:
A module of reactive power measurements is proposed on the basis of analyzing its mathematical model.FFT IP(intelligence property) core of Altera company is used to estimate the amplitude and phase of harmonic.Multiplier-subtraction module is designed to calculate reactive power.Transposing module is designed to fix the data in order to reduce error of the system.All the IP cores mentioned above are completed by VHDL and simulated by Quartus II.Finally,those IP cores are applied in the ASIC design of electric power measurement chip.It is tested that the design is more accurate.