Three-single-phase-three-wire-system parallel APF/SVG device
A three-single-phase, three-wire system technology, applied to the AC network to reduce harmonics/ripples, reactive power adjustment/elimination/compensation, flexible AC transmission systems, etc., can solve the problems of inoperability, reactive power consumption, and reactive power power reduction etc.
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[0022] The present invention is described in detail below in conjunction with accompanying drawing:
[0023] The invention discloses a three single-phase three-wire parallel APF (APF Active Power Filter, active power filter) / SVG (Static Var Generator, static var generator) device, please refer to figure 1 as shown, figure 1 Middle: Lsa, Lsb, Lsc are line impedances, TA4, TA5, TA6 are A, B, C three-phase load current sensors respectively, QF2 is the main circuit breaker for load input and removal, QF3, QF4, QF5 are harmonic emission Load, inductive reactive load, capacitive reactive load input and removal circuit breaker, QF6, QF7 are the circuit breaker for cutting off single phase when simulating unbalanced load, QF is the main circuit breaker, HPF is the AC side filter, FUa . A, B, and C three-phase pre-charging resistors, KM2 is the pre-charging resistance cut-off contactor, TA1, TA2, TA3 are the output current sensors of AB, BC, and CA devices respectively, LA, LB, LC ar...
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Abstract
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