A Novel Power Factor Detector for Balanced Three-Phase Non-Sinusoidal Loads

平衡三相非弦波負載之新型功率因數偵測器

江茂欽(Maoh-Chin Jiang)

《宜蘭技術學報》 7期 (2001/12) Pp. 57-65

https://doi.org/10.6179/nit.2001.07.17

摘要

本論文旨在發展適用於三相非弦波負載電流之新型功率因數偵測器。由於充份應用三相平衡系統之特性，因此，使用於三相弦波系統時，具有瞬時暫態響應之能力，沒有任何時間延遲；而且，所提出之偵測器改善傳統技術，僅能適用於弦波信號之缺點，即本文之方法不僅可適用於弦波信號亦可適用於非弦波信號。並且，所提出之偵測器具有極佳之穩態特性。詳細之理論分析、硬體製作及實驗結果均於文中詳加說明，以驗証本文所提方法之可行性。

關鍵字

功率因數偵測器 ； 非弦波負載電流

並列摘要

A novel power factor detector for three-phase non-sinusoidal load currents is proposed. It eliminates the disadvantage of conventional detectors, which can measure only the power factor of linear load. This novel detector fully uses the three-phase characteristic to achieve instantaneous response while using in the balanced three-phase linear loads. Therefore, the transient response of the proposed detector is very fast when compared with that of the conventional detectors. Moreover, the proposed detector possesses excellent input-to-output steady state performance. Theoretical analysis, hardware implementation, and some experimental results are also detailed in this manuscript.

並列關鍵字

power factor detector ； non-sinusoidal load currents