The three - phase to four - phase transformer with a four - phase four - leg structure solves the problem . the windings on each leg of this transformer are not more than three 这种变压器每相铁心柱上的绕组不超过三个,是不等相变换的最简单形式。
Principally , when the winding - connection scheme is adopted to add a set of auxiliary windings on the two - phase side of a balance transformer , we can get a three - phase to four - phase transformer 原则上,在平衡变压器的两相侧采用增加一套副绕组的双重接线方案,便可得到三相变四相电力变压器。
When the phase is changed , the used phase transformers is voltage - control phase transformer which is changed by phase transformer consist of ordinary operation amplifier consist of ordinary operational amplifier 在相位调整时所运用的移相器是由普通运算发大器构成的移相器改造成的压控移相器。
The paper brings out a few of measures to save energy including rational planning of grid , improvement of line loss management , public line , reactive compensation on - spot , promotion of single - phase transformer and elimination of timeworn facilities , etc 提出了多种途径的节能措施,包括合理规划电网、加强线损管理、完善公用线路、公用台变无功就地补偿、推广单相变、淘汰落后用电设备等。
This paper presents a three - phase harmonic power flow algorithm using phase components and back - forward sweep method to solve the disconvergence when the three - phase transformer harmonic model was used . the example result presented the method was feasible and 本文针对在进行三相谐波潮流算法时因引入三相变压器谐波模型而可能导致计算结果不收敛问题,提出了谐波潮流计算的相分量法,其中引用了前推-回代法。