摘要
用于电能计量的谐波电压源要求具有很强的谐波合成能力,因此,对采样频率要求较高。目前,绝大多数谐波电压源装置采用DSP作为控制芯片。DSP虽然有着很强的信号处理能力,但其采样率不高,不能满足电能计量用谐波电压源采样精度的要求。对此,提出了将FPGA应用于谐波电压源的研究中,采用基于SPWM的双闭环PI控制策略,在VHS-ADC高速信号处理平台上搭建离散域控制模型并进行仿真。仿真结果表明,输出波形稳定,具有较小的畸变率,说明了基于FPGA进行谐波电压源研究的可行性。
Strong harmonic synthesis was required for harmonic voltage source used in electric energy metering,so it demanded a higher sampling frequency.At present,DSP as controller chip was used to most the vast majority of harmonic voltage source devices.DSP had strong signal processing ability,but its sampling frequency was not high,so it did not satisfy the sampling accuracy requirement of harmonic voltage source used in electric energy metering.In response to above problems,FPGA was applied to the research of harmonic voltage source,based on double closed-loop PI SPWM control strategy was used,discrete control model domain was built on VHS-ADC high-speed signal processing platform and simulation.The results of simulation showed that the stability of the output waveform with less distortion,verified the feasibility of harmonic voltage source study based on FPGA.
出处
《低压电器》
北大核心
2010年第18期31-35,共5页
Low Voltage Apparatus
基金
国家自然科学基金资助项目(40874094)
关键词
电能质量
谐波电压源
离散域
electrical energy quality
harmonic voltage source
discrete domain
