本論文以實現盤面式之電力諧波分析儀為設計，考慮實用性、抗干擾性和精確度，其硬體架構採用定點式數位信號處理器(Digital Signal Processor, DSP)為核心，具有高速運算處理能力，所有量測功能都可以做到即時性的處理。配合電壓、電流感測器，傳送六通道的類比訊號至16位元A/D進行類比數位轉換，並且取樣頻率為偵測到第一個通道原點後，運算數個週期並取平均以取得較高精確的取樣頻率。
本論文在訊號中擷取4個週期訊號共1024筆資料，並使用漢寧(Hanning)視窗進行各次諧波頻譜的特徵化，以滿足避免頻譜洩漏的條件。快速傅立葉轉換(FFT)運算過程中使用特殊指令進行複數快速傅立葉轉換，能快速檢測出電網中的三相電壓、電流的各次諧波，以進行諧波的即時分析處理，再將各次諧波數據利用RS-232傳送至PIC顯示。

The goal of this thesis is to design and implement a power analyzer, in which practicality, immunity and precision are under considered. A high-performance digital-signal-processor (DSP) is employed as the core of the analyzer which provides real-time calculation for all available measurement functions. Three channels of voltage and three channels of current are sensered through the potential transformers (PT) and current transformers (CT) and are converted by six individual angalog-to-digital converters, which provides 16-bit resolution. An averaging procession is used to obtain precise results.
For each input channel, four cycles of the signal are obtained from 1024 data points and the Hanning window is used to implement haracterization on the spectrum for avoiding spectral leakage. Some special instructions are used to execute the complex fast Fourier transform for analyzing the measured signals. Finally, all available sesults are sent to a seperated digital processor for display or futher processing.

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