CN207410242U - Compound double reverse-stars type rectifier with diode and paralleing reactor - Google Patents

Abstract

The utility model provides a kind of compound double reverse-stars type rectifier with diode and with paralleing reactor, it includes：1 three-phase rectifier transformer, 1 band, 1 centre tapped paralleing reactor, 1 filter inductance, 2 fly-wheel diodes and 12 thyristors and its dephased two trigger circuits composition.It has the advantages that power factor is big compared with high and output current compared with conventional three-phase bridge-type rectifiable device, it has the advantages that power factor is high and low pressure output current is big compared with band weighs reactor three-phase bridge controlled rectifier, it has the advantages that power factor is higher, device is resistance to compared with the positive and negative star controlled rectifier of conventional belt paralleing reactor and forces down.They belong to high current, high-power, High Power Factor, the green phase control rectifier circuit of low harmony wave, there is good economic benefit and social energy conservation environmental benefit after implementation.

Description

Compound double reverse-stars type rectifier with diode and paralleing reactor

Technical field

The present invention relates to a kind of three-phase work(factor is high, harmonic wave is low, it is energy saving, subtract material double reverse-stars type controlled rectifier.

Background technology

The half-wave controlled rectifier used in three phase mains has：Three-phase semiwave, six phase half-waves, the double anti-stars of band paralleing reactor Shape etc..The bridge-type controlled rectifier used in three phase mains has：Corner connection three-phase bridge, star connect three-phase bridge, band paralleing reactor Three-phase bridge etc..Star connects three-phase bridge to be had again：Three-phase full-controlled bridge, the neutral point band of Russian Ba Bate inventions of 6 thyristors The three-phase full-controlled bridge of 1 diode and 6 thyristors, the three-phase full-controlled bridge of 2 diodes of neutral point band and 6 thyristors, sheet 2 diodes of three-phase full-controlled bridge, neutral point band with 2 diodes of paralleing reactor and 6 thyristors of inventor's invention With five stem three-phase full-controlled bridges of 6 thyristors etc..It is three-phase bridge controlled rectifier and with balance reactance to answer with the most use Device double reverse-stars type controlled rectifier, the former output current is small, and the latter's rectification winding utilization is low.Existing controlled rectifier it Only in maximum output voltage just there are one optimum power factor point, output voltage is lower, and rectification circuit power factor is got over Low, output current is smaller, and harmonic voltage is bigger, and efficiency is also lower.For it is enable to export rated current when turning down voltage, The capacity of rectifier transformer and device must be just increased, just takes very much material when manufacturing controlled rectification equipment, uses controlled rectifier When it is just very power-consuming, and serious harmonic current is caused to pollute to power grid.

The content of the invention

First of the utility model is designed to provide a kind of reduction rectifier transformer capacity, improves power factor, carries High efficiency and the controlled rectifier for reducing harmonic wave, it has 2 optimum power factor points in range of regulation.Second purpose be Offer one kind turns down voltage output DC current can be with increased controlled rectifier.When 3rd purpose is High-current output The quantity in parallel of rectifier arm thyristor can be reduced, improves the reliability of rectifier.

To achieve these goals, the utility model provides a kind of compound double reverse-stars type with diode and paralleing reactor Rectifier, it includes：A) three-phase rectifier transformer of 1 voltage of transformation, armature winding are used to be connected to three-phase alternating-current supply, Secondary commutation winding is used to be linked to be the double reverse-stars type for having 1 neutral point；B) 1 is used to improve whole three-phase rectifier transformer secondary flow Winding and rectifying device utilization rate carry 1 centre tapped paralleing reactor；C) 1 inductance for filtering；D) 2 Fly-wheel diode and 12 thyristors are divided into the first and second two groups, e) 12 thyristors have 2 trigger signals, and feature exists In：First DC output end (1) is connected with filter inductance one end, the filter inductance other end (3) and paralleing reactor centre cap, The cathode connection of first afterflow, two pole, one end (4) of paralleing reactor are connected with the cathode of 3 the first thyristors, balance electricity Another end (5) of anti-device is connected with the cathode of another 3 the first thyristors, and the second DC output end (2) splits stream two with second The anode connection of the anode of pole pipe and 6 the second thyristors, the sun of the neutral point (o) of double reverse-stars type and the first fly-wheel diode Pole, the cathode connection of the second fly-wheel diode, 6 ends (a, a ', b, b ', c, c ') of double reverse-stars type are brilliant with 6 first respectively The cathode connection of the anode of brake tube, 6 the second thyristors, each end be connected with 1 the first thyristor anode and 1 second The cathode of thyristor has 2 dephased trigger signals to control 6 the first thyristors and 6 second respectively in same period The angle of flow of thyristor realized while adjust rectification circuit output DC voltage, make the power of each DC output voltage because Number reaches optimal.

Description of the drawings

Attached drawing 1 is the circuit of the compound double reverse-stars type rectifier with diode and paralleing reactor.Wherein：B is that three-phase is whole Convertor transformer, L be filter inductance, L_PFor paralleing reactor, D is diode, and V is thyristor.

Specific embodiment

In order to further appreciate that the technical solution of the utility model, it is described in detail below by specific embodiment.

From attached drawing 1：3 armature winding triangle connections of three-phase rectifier transformer, centre tapped 3 of 1, band are whole Stream winding connects into the double reverse-stars type of 1 neutral point, 1) by paralleing reactor, filter inductance, double reverse-stars type winding, 2 two Pole pipe (D1, D2), 6 thyristors (V7~V12) and its trigger signal form 1 low-voltage output, double reverse-stars type controlled rectification Circuit exports controlled rectification voltage in two DC output ends (1,2), when zero triggers there are one optimum power factor point, Maximum output current is equivalent to 6 secondary windings Parallel opertations, it is characterised in that：Diode D1 flows through controlled rectification electric current and continues Galvanic electricity stream, and diode D2 flows only through freewheel current.

2) in the case of thyristor (V7~V12) full conducting, then the triggering to lag to another 6 thyristors (V1~V6) is believed Number when, by paralleing reactor, filter inductance, 3 secondary commutation windings (a-a ', b-b ', c-c '), 2 diodes (D1, D2), 12 thyristors (V1~V12) and its trigger signal form the output of 1 high voltage again, double reverse-stars type controlled rectification circuit, with Two DC output ends (1,2) export controlled rectification voltages, and when zero triggers also there are one optimum power factor point, maximum is defeated Go out electric current and be only equivalent to 3 secondary windings Parallel opertations, it is characterised in that：2 diodes D1 and D2 flow only through freewheel current, by This understands：The maximum output current of compound double reverse-stars type rectifier with diode and paralleing reactor is in half voltage point, its energy The maximum current value close to 2 times of ceiling voltage output is exported, therefore, it not only has more phased than tradition when adjusting output voltage The much higher power factor of rectification circuit, and allow maximum output current not when turning down output voltage but not reduce, also The advantages of can increasing, this is that all traditional phase controlled rectifiers can not all be accomplished.

In addition, 12 thyristors also form two three-phase half-controlled bridge circuits again with 6 double anti-star windings, it is possible to increase high electricity The angle of flow of pressure output, double reverse-stars type controlled rectification circuit device and winding, and further improve performance.

The utility model controlled rectifier it compared with conventional three-phase bridge-type rectifiable device have power factor it is higher and defeated Go out the advantages of electric current is big, it has power factor high compared with band weighs reactor three-phase bridge controlled rectifier and low pressure output electricity The advantages of big is flowed, it has compared with the positive and negative star controlled rectifier of conventional belt paralleing reactor, and power factor is higher, device is resistance to The advantages of forcing down.They belong to high current, high-power, High Power Factor, the green phase controlled rectifier of low harmony wave.Implement this practicality New production unit section material is economized on electricity using unit, and power grid reduces Xie Bo electricity Liu pollution dyes, it is new generation of green phase controlled rectifier, There are good economic benefit and social energy conservation environmental benefit.

Claims (2)

1. the compound double reverse-stars type rectifier with diode and paralleing reactor, it includes：A) three phase rectifier of 1 voltage of transformation Transformer, for armature winding for being connected to three-phase alternating-current supply, secondary commutation winding, which is used to being linked to be, the double anti-of 1 neutral point Star；B) 1 for improve whole three-phase rectifier transformer secondary flow winding and rectifying device utilization rate with 1 centre cap Paralleing reactor；C) 1 inductance for filtering；D) 2 fly-wheel diodes and 12 thyristors, be divided into first and second liang Group, e) 12 thyristors have 2 trigger signals, it is characterised in that：First DC output end (1) is connected with filter inductance one end, The filter inductance other end (3) is connected with the cathode of paralleing reactor centre cap, two pole of the first afterflow, one end of paralleing reactor Head (4) is connected with the cathode of 3 the first thyristors, another end (5) of paralleing reactor and the moon of another 3 the first thyristors Pole connects, and the second DC output end (2) splits the anode of stream diode with second and the anodes of 6 the second thyristors is connected, it is double instead Star-shaped neutral point (o) is connected with the anode of the first fly-wheel diode, the cathode of the second fly-wheel diode, 6 of double reverse-stars type Cathode of the end (a, a ', b, b ', c, c ') respectively with the anode of 6 the first thyristors, 6 the second thyristors is connected, Mei Geduan Head is connected with the anode of 1 the first thyristor and the cathode of 1 the second thyristor, has 2 dephased to touch in same period It signals and controls the angle of flow of 6 the first thyristors and 6 the second thyristors respectively, realize and adjust rectification circuit output direct current While pressure, the power factor of each DC output voltage is made to reach optimal.

2. the compound double reverse-stars type rectifier according to claim 1 with diode and paralleing reactor, it is characterised in that： The anode of 1 fly-wheel diode and the moon of another 1 fly-wheel diode are connected on the common neutral of positive and negative star rectifier winding Pole, the cathode of 1 fly-wheel diode are connected with paralleing reactor centre cap, and another 1 fly-wheel diode anode and direct current are defeated Go out negative terminal connection, 2 series connection fly-wheel diodes form the diode continuousing flow circuit of circuit.