CN205986694U - Exchange controllable phase compound excitation system of broadside on direct current side reposition of redundant personnel - Google Patents

Abstract

The utility model provides an exchange controllable phase compound excitation system of broadside on direct current side reposition of redundant personnel, by current transformer, the reactor, the condenser, rectifier transformer, middle current transformer, the measuring transformer, gang potentiometer, static rectifier bridge, the regulator, series resistance and voltage are adjusted the potentiometre and are constituteed, adopt rectifier reverse parallel connection in a thyristor and the rectifier bridge, do and divide the flow control, also exactly connect the rectifier to exchange the side on the positive pole of thyristor, the negative pole connects the direct current side, it divides the flow control to exchange broadside on direct current side, rectify in order to make voltage, thereby realize compound control. Silicon controlled rectifier trigger impulse is sawtooth waveform, and the interval of sawtooth wave is greater than 180, and it is enough wide to move the looks scope, and regulation precision is high. Can be used to excitation system marine, brushless synchronous generator for the warship.

Description

The controlled phase compound excitation system that a kind of AC shunts to DC side

Technical field

This utility model is related to AC to DC side flow-dividing control technical field, and specially a kind of AC is to DC side The controlled phase compound excitation system of shunting.

Background technology

The modern peculiar to vessel and requirement more and more higher to runnability for the warship no-brush synchronous generator, excitation system is brushless same The important component part of step electromotor, directly affects the operation characteristic of electromotor.Excitation system is typically made up of two parts：First Part is exciting power unit, and the Exciting Windings for Transverse Differential Protection of its AC exciter to no-brush synchronous generator provides DC excitation electric current； Part II is field regulator, and it, according to the running status of electromotor, automatically adjusts the exciting current of power cell output, with Meet the service requirement of electromotor.Exciting power unit adopts phase-compounding excitation unit, and field regulator adopts automatic voltage regulator, Phase-compounding excitation unit and automatic voltage regulator form controlled phase compound excitation system.Phase-compounding excitation unit handle is proportional to electromotor output Amount be first overlapped in AC parallel connection, then rectified bridge supplies excitation.Due to being in AC superposition, through suitable Cooperation, can also react the phase place (power factor) of dynamo current.When generator unit stator electric current increases or power factor reduction When, the excitation voltage confessed can be increased.Automatic voltage regulator is the major part of controlled phase compound excitation system, is experienced by it and sends out The change of the voltage of motor, electric current or other specification, then applies control action to phase-compounding excitation unit, just can improve synchronous generator The static accuracy of machine, during unit operation steady state voltage regulation in ± 0.5%, during parallel running in ± 2.5%.Make to send out The output voltage of motor keeps constant and it is necessary to make excitation system realize controllable silicon, commutator is shunted, and shunting at present has three The mode of kind：, to AC shunting and AC shunting, wherein DC side is used to AC shunting mode for DC side shunting, DC side In controlled phase compound excitation system, it is controlled.

Content of the invention

In order to preferably solve the above problems, this utility model provides the controlled phase that a kind of AC shunts to DC side Compound excitation system, its regulation precision is high, ensure that the output voltage of electromotor remains stable.

Its technical scheme is such：A kind of controlled phase compound excitation system that AC shunts to DC side it is characterised in that After the primary coil as three current transformers for the three-phase output end cable of described alternating current generator, by reactor and electric capacity Connect the primary coil of rectifier transformer, the secondary coil of described rectifier transformer connects static-rectifier, its center line and three The center line of the secondary coil of individual described current transformer connects together, and three described current transformers are current transformer one, electricity Current transformer two, current transformer three, correspond to U phase, V phase and the W phase of described alternating current generator, described current transformer one respectively Secondary coil and described current transformer three secondary coil respectively as an intermediate current mutual inductor primary coil even Connect the secondary coil of described rectifier transformer, the secondary coil of described current transformer two is directly connected to described rectifier transformer Secondary coil, the secondary coil of the described intermediate current mutual inductor being connected with described current transformer one connects gang potentiometer After one potentiometer reconnect actuator first voltage input signal end, be connected with described current transformer three described in Between current transformer secondary coil connect another potentiometer of described gang potentiometer after reconnect second of actuator Voltage input signal end, described gang potentiometer connects the secondary coil of two measuring transformers, two described measuring transformers Primary coil connect the primary coil of three described current transformers, the secondary coil of two described measuring transformers connects institute State the 3rd voltage input signal end of actuator, one of secondary coil of described rectifier transformer is by series resistance even Connect the synchronous signal input end of described actuator, the common anode of the outfan connection static-rectifier of described actuator is extreme, described The magnet exciting coil of exciter is connected between the extreme anode tap together of common cathode of described static-rectifier, the three-phase of described exciter Rotor windings connect the rotor field coil of described alternating current generator by rotating rectifier, and described actuator includes controllable silicon unit Part, the anode of described silicon controlled element by series resistance connect the AC of a commutator in described static-rectifier, Negative electrode connects the common-anode of commutator.

It is further characterized by, and described actuator also includes rectification module, and the input of described rectification module is three Described voltage input signal end, the outfan of described rectification module connects voltage and adjusts module, reference voltage and power module, filter Ripple power module of voltage regulation, described voltage adjust module be sequentially connected with voltage actual measurement module, active low-pass filter module, anti-phase input Amplification module, proportional integral voltage correction module, differential amplification module, phase-shift pulse form module, described thyristor；Institute State synchronous signal input end and connect described thyristor, over-voltage protection module, synchronous shaping clipping module, described synchronization is whole Shape clipping module is sequentially connected with and compares clipping module, sawtooth waveforms generation module, described phase-shift pulse formation module, described overvoltage Protection module connects described thyristor, and described filtering voltage regulation power module is to described active low-pass filter module, anti-phase defeated Enter amplification module, proportional integral voltage correction module, differential amplification module provide power supply, described reference voltage and power module to Described phase-shift pulse forms module and the described clipping module that compares provides reference voltage and power supply.

After structure of the present utility model, thyristor anode connects the AC of a commutator, negative electrode connects After the common-anode of commutator, carry out the flow-dividing control to DC side for the AC, in order to voltage correction, realized complex controll, adjusted Pressure high precision, ensure that the output voltage of motor remains stable.

Brief description

Fig. 1 is this utility model structural representation；

The single line principle layout that Fig. 2 shunts to DC side for AC；

Fig. 3 is AC to DC side shunting and sawtooth waveforms triggering pulse generator sketch；

Fig. 4 is each point voltage oscillogram in Fig. 3；

Fig. 5 is controller structure theory diagram.

Specific embodiment

As shown in Fig. 1 to Fig. 5, the controlled phase compound excitation system that a kind of AC shunts to DC side, the three of alternating current generator After the primary coil as three current transformers for the phase output terminal cable, by reactor and capacitance connection rectifier transformer just Level coil, the secondary coil of rectifier transformer connects static-rectifier, the secondary of its center line and three described current transformers The center line of coil connects together, and three current transformers are current transformer one, current transformer two, current transformer three, point Not Dui Ying alternating current generator U phase, V phase and W phase current transformer, the secondary coil summation current transformer of current transformer one Three secondary coil is respectively as the secondary coil of the primary coil connection rectifier transformer of an intermediate current mutual inductor, electric current The secondary coil of transformer two is directly connected to the secondary coil of rectifier transformer, and the intermediate current being connected with current transformer one is mutual First voltage input signal end of actuator is reconnected after one potentiometer of secondary coil connection gang potentiometer of sensor (19) secondary coil of the intermediate current mutual inductor, being connected with current transformer three connects another potentiometer of gang potentiometer Reconnect second voltage input signal end (17) of actuator afterwards, gang potentiometer connects the secondary wire of two measuring transformers Circle, the primary coil of two measuring transformers connects the primary coil of three current transformers, the secondary of two measuring transformers 3rd voltage input signal end (18) of coil connection adjustor, one of secondary coil of rectifier transformer passes through series connection The synchronous signal input end (1) of resistance connection adjustor, the common anode of outfan (5) the connection static-rectifier of actuator is extreme, The magnet exciting coil of exciter is connected between the extreme anode tap together of common cathode of static-rectifier, the three-phase rotor windings of exciter Connect the rotor field coil of alternating current generator by rotating rectifier, actuator includes thyristor, silicon controlled element Anode the AC of a commutator in static-rectifier is connected by series resistance, negative electrode connects the common-anode of commutator. Actuator also includes rectification module, and the input of rectification module is three voltage input signal ends (17,18,19), rectification module Outfan connect voltage and adjust module, reference voltage and power module, filtering voltage regulation power module, voltage adjusts module sequentially Connect voltage actual measurement module, active low-pass filter module, anti-phase input amplification module, proportional integral voltage correction module, differential Amplification module, phase-shift pulse form module, thyristor；Synchronous signal input end (1) connects thyristor, overvoltage is protected Shield module, synchronous shaping clipping module, synchronous shaping clipping module be sequentially connected with compare clipping module, there is module in sawtooth waveforms, Phase-shift pulse forms module, and over-voltage protection module connects thyristor, and filtering voltage regulation power module is to active low-pass filter Module, anti-phase input amplification module, proportional integral voltage correction module, differential amplification module provide power supply, reference voltage and electricity Source module forms module to phase-shift pulse and compares clipping module offer reference voltage and power supply.

In Fig. 2, K₁₄=W₁/W₄First secondary coil for a current transformer and the turn ratio of secondary coil, K '₃₂=W '₃/W′₂ For the turn ratio of rectifier transformer secondary coil during load and primary coil, U_φFor the phase voltage of alternating current generator during load, I is negative Carry electric current, i_fFor DC side exciting current；L_f1For the inductance of the Exciting Windings for Transverse Differential Protection of AC exciter, r_f1Excitation for AC exciter The resistance of winding；X_LFor every phase induction reactance of reactor, X_CEvery phase capacitive reactance for resonant capacitor.

In Fig. 4, u_vu2：Line voltage between static rectifier bridge (V1) AC V phase and U phase；u_vw2：Static rectifier bridge (V1) Line voltage between AC V phase and W phase；u₁：Voltage between silicon controlled anode and negative electrode；u₂：The voltage stabilizing value of stabilivolt, I.e. synchronous shaping limiting voltage；u₄：The reference voltage of comparison amplifier；u₃：The output voltage of sawtooth generator；u_GK：Controlled It can be seen that SCR trigger pulse is zig-zag, the interval of sawtooth waveforms is more than voltage between silicon trigger electrode and negative electrode 180 °, the enough width of phase shift range, regulation precision is high.

Claims (2)

1. a kind of AC shunts to DC side controlled phase compound excitation system is it is characterised in that the three-phase of described alternating current generator After the output primary coil as three current transformers for the end cable, by the primary of reactor and capacitance connection rectifier transformer Coil, the secondary coil of described rectifier transformer connects static-rectifier, and its center line is secondary with three described current transformers The center line of level coil connects together, and three described current transformers are current transformer one, current transformer two, current transformer Three, correspond to U phase, V phase and W phase, the secondary coil of described current transformer one and the described electric current of described alternating current generator respectively The secondary coil of transformer three connects the secondary of described rectifier transformer respectively as the primary coil of an intermediate current mutual inductor Level coil, the secondary coil of described current transformer two is directly connected to the secondary coil of described rectifier transformer, with described electric current Reconnect after one potentiometer of secondary coil connection gang potentiometer of the described intermediate current mutual inductor that transformer one connects First voltage input signal end of actuator, the secondary of the described intermediate current mutual inductor being connected with described current transformer three Second voltage input signal end of actuator is reconnected after another potentiometer of the coil described gang potentiometer of connection, described Gang potentiometer connects the secondary coil of two measuring transformers, and the primary coil of two described measuring transformers connects three institutes State the primary coil of current transformer, the secondary coil of two described measuring transformers connects the 3rd voltage of described actuator Input signal end, one of secondary coil of described rectifier transformer connects the synchronization letter of described actuator by series resistance Number input, the common anode that the outfan of described actuator connects static-rectifier is extreme, and the magnet exciting coil of exciter is connected to institute State between the extreme anode tap together of common cathode of static-rectifier, the three-phase rotor windings of described exciter are by rotating rectifier even Connect the rotor field coil of described alternating current generator, described actuator includes thyristor, the sun of described silicon controlled element Pole connects the AC of a commutator in described static-rectifier by series resistance, negative electrode connects the common-anode of commutator.

2. a kind of AC according to claim 1 shunts to DC side controlled phase compound excitation system is it is characterised in that institute State actuator and also include rectification module, the input of described rectification module is three described voltage input signal ends, described rectification The outfan of module connects voltage and adjusts module, reference voltage and power module, filtering voltage regulation power module, and described voltage is adjusted Module is sequentially connected with voltage actual measurement module, active low-pass filter module, anti-phase input amplification module, proportional integral voltage correction mould Block, differential amplification module, phase-shift pulse form module, described thyristor；Described synchronous signal input end connection is described can Control silicon cell, over-voltage protection module, synchronous shaping clipping module, described synchronous shaping clipping module is sequentially connected with and compares amplitude limit Module, sawtooth waveforms occur module, described phase-shift pulse to form module, and described over-voltage protection module connects described controllable silicon unit Part, described filtering voltage regulation power module is to described active low-pass filter module, anti-phase input amplification module, proportional integral voltage school Positive module, differential amplification module provide power supply, described reference voltage and power module to form module and institute to described phase-shift pulse State and clipping module offer reference voltage and power supply are provided.