three-phase and four-wire system 中文意思是什麼
three-phase and four-wire system
解釋
三相四線制- three : n. 1. 三個人[東西]。2. 三歲，三時。3. 【板球】3字型。
- phase : n 1 形勢，局面，狀態；階級。2 方面，側面。3 【天文學】（月等的）變相，盈虧；【物、天】相，周相，...
- and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
- four : n 1 四人小組；（套在車上的）四匹馬。2 四的記號；（骰子的）四點；（鐘點的）四時；四歲。3 〈pl 〉 ...
- wire : n 1 金屬線，銅絲，鐵絲，鋼絲；【電學】導線；線路；金屬絲網；【造紙】抄網。2 電信；〈口語〉電報。3...
- system : n 1 體系，系統；分類法；組織；設備，裝置。2 方式；方法；作業方法。3 制度；主義。4 次序，規律。5 ...
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This paper describes mainly system functions, measuring methods, circuit design, software program and errors analysis of a new type of measuring instrument. this instrument can measure and monitor electric parameters in single - phase circuits, three - phase ( three - wire or four - wire ) circuits. this system can be applied to electric devices and power plants, transformer substations with harmonic pollution. it can measure current, voltage, power, energy, frequence, power factor etc. it also can detect load quality, phase sequence, alarm, display and print results, as well as detect and dispose negative power
該儀器適用於含有諧波污染情況下的機電設備現場、發電廠、供電局、企業變電所現場，可用來測量電流、電壓、有功功率、無功功率、視在功率、有功電能、無功電能、視在電能以及頻率和功率因數等電參數，並具有負載性質（感性、容性）判別，正、逆相序判別指示功能；超限報警功能；列印記錄功能和負功檢測及處理功能。 -
The new standpoint that ip - iq detecting method based on three - phase three - wire system can be directly used in three - phase four - wire system is presented and proved. generalized harmful currents compensation based on multilevel converter and multi - band hysteresis pulse width modulation with timer are presented
提出並證明了基於三相三線制系統的ip - iq檢測法可直接用於不平衡三相四線制系統有害電流的檢測，無需事先剔除零序電流的新觀點。 -
Main circuit structure and control of the active power filter for three - phase four - wire system
三相四線制有源電力濾波器主電路的結構形式與控制 -
This paper brings forward that asvg is capable of compensating harmonic, negative sequence and zero sequence currents. so asvg can synchronously compensate the reactive current and harmful currents in three - phase four - wire unbalanced system
本文提出靜止無功發生器還具有抑制諧波和濾除負序、零序電流的能力，從而可以用於對三相四線制不平衡系統同時進行無功補償和有害電流濾除。 -
The detecting techniques of harmful currents, the modulation methods of novel upfc and the balancing control of capacitors voltage on dc link are studied thoroughly. in order to be fit for three - phase four - wire system, the method of balancing control using chopper presented in literature [ 29 ] is mended
分析了零序和負序電流對新型upfc直流側電容電壓的不同影響，對文獻[ 29 ]提出的傳統upfc的直流側各電容電壓的均衡控制方法進行了仔細研究，提出了採用b型直流斬波器來控制新型upfc的直流側電容電壓的新方法。 -
Modeling and simulating of new three - phase four - wire cascade control system
新型三相四線制串級調速系統的建模與模擬
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