CN2311881Y

CN2311881Y - Navigation uninterruption power source

Info

Publication number: CN2311881Y
Application number: CN 97206729
Authority: CN
Inventors: 汪羽; 杨建东; 高山; 龚瑞良; 朱进先
Original assignee: 龚瑞良
Priority date: 1997-03-13
Filing date: 1997-03-13
Publication date: 1999-03-24
Anticipated expiration: 2007-03-13

Abstract

The utility model relates to a navigation uninterruption power source, comprising a synthetic power source 2, a monitoring unit 3 and a converting unit 8 which are connected with a load 10. The synthetic power source 2, the monitoring unit 3, and the converting unit 8 are respectively connected with a three-phase inversion control unit 4, a three-phase inversion output unit 6, a single-phase inversion control unit 5, and a single-phase inversion output unit 7 orderly, and a double closed loop circuit structure is formed. The multiple input link of the power source is formed by the ship electricity, a storage battery 11, and an emergency generator 12 whose voltages are changed by a voltage transformer 1, and a frequency changer 13. The electrical energy of the storage battery 11 is replenished, and the electrical energy is inputted from a constant voltage charger 9. An alarm unit 14 is connected with a monitoring unit 3. The utility model has the advantages that the vitality for supplying electricity to the load is strong, and the utility model has good adaptability to the ship condition.

Description

The navigation uninterrupted power supply

The utility model relates to the improvement of marine navigation power-supply device.

The intermediate frequency power supply of the navigator of boats and ships all is to be provided by the convertor of ship electricity by various uses at present, this class convertor is made up of motor and intermediate frequency generator, the stable need of output voltage and frequency have equipment such as starter, speed regulator, frequency modulator, voltage regulator to guarantee, in the use of reality, this kind equipment is subjected to the influence of voltage ripple of power network bigger, also exists power supply poor quality, corollary equipment failure rate high and in case lose and will make the navigator cisco unity malfunction behind the ship electricity and influence problem such as ship's navigation.

The purpose of this utility model is a kind of power supply that will provide such: ship electricity and the battery tension at this power supply of input be changed to ± during 20% rated voltage, can make power frequency and the intermediate frequency power supply voltage and the constant precision height of frequency of output, sinusoidal waveform is good, and in case after losing the ship electricity, again can be to the load uninterrupted power supply, and under case of emergency, can also start emergency generator by keying line and power to the load.

The purpose of this utility model is achieved in that by the ship electricity after the transformer transformation and inputs to synthetic power subsystem with battery feed; and through converting unit to the power supply of three-phase inversion output unit and single-phase inversion output unit; three-phase intermediate frequency after the inversion; single phase industrial frequence power supply and emergency generator intermediate frequency power supply; the frequency converter power frequency supply powers to the load through converting unit; the inverse changing driving circuit work that the feedback signal instruction three-phase inversion control unit of load of monitoring unit root a tree name and synthetic power supply and single-phase inversion control unit are controlled corresponding inversion output unit; and has overload; low-voltage variation and warning function, the charging of storage battery is finished by voltage-stabilizing charger.

The utility model is owing to improved the method for supplying power to of marine navigation, thereby navigator under normal circumstances can be powered by the various Flow varying power supplies of ship electricity inversion, noise when both having exempted convertor work, improved power supply quality again, when navigator loses the ship electricity, can keep the inversion energy of a few hours especially, guarantee the navigation device uninterrupted power supply by storage battery, under case of emergency, also can power to the load, the vitality of power supply is improved by emergent intermediate frequency generator.

Brief Description Of Drawings of the present utility model is as follows:

Fig. 1 is a circuit structure block diagram of the present utility model;

Fig. 2 is the schematic circuit of the synthetic power supply of the utility model;

Fig. 3 is the schematic circuit of the utility model monitoring unit;

Fig. 4 is the schematic circuit of the utility model three-phase inversion control unit;

Fig. 5 is the schematic circuit of the utility model single-phase inversion control unit;

Fig. 6 is the schematic circuit of the utility model three-phase inversion output unit;

Fig. 7 is the schematic circuit of the utility model single-phase inversion output unit;

Fig. 8 is the converting unit schematic circuit that the utility model starts inverter work and the electric mode is changed;

Fig. 9 is the schematic circuit of the utility model to the storage battery constant voltage charge.

Below one of the utility model of providing of we root a tree name Fig. 1-Fig. 9 embodiment preferably, and, further provide ins and outs of the present utility model in conjunction with arranging of this embodiment stated.

See also Fig. 1, can understand the roughly course of work of the present utility model by Fig. 1: input power supply VIN synthesizes unified DC power supply through transformer 1 step-down and after rectification circuit 21 rectifications of synthetic power supply 2 with storage battery 11, should synthesize the direct current of power supply 2 powers to three-phase inversion output unit 6 and single-phase inversion output unit 7 through converting unit 8, after 3 pairs of monitoring units carry out integrated treatment from the voltage of synthetic power supply 2 and load 10 and inversion output unit current signal, instruction three-phase inversion control unit 4 and single-phase inversion control unit 5 are controlled three-phase inversion output unit 6 and single-phase inversion output unit 7 operate as normal, 8 of converting units are born three-phase inversion output unit 6 and intermediate frequency generator 12 and single-phase inversion output unit 7 are changed with the power supply of frequency converter 13, start corresponding inversion unit work and the line traffic control of emergency generator is started, charhing unit 9 is to the storage battery electric energy supplement, and the alarm point of 14 pairs of settings of alarm unit carries out alert service.

See also Fig. 2, the synthetic power supply 2 of present embodiment comprises combiner circuit 21, power distribution circuit 22.Input power supply VIN is after T1, the T2 of transformer 1, T3 step-down, the three-phase full wave rectifier circuit of transporting to three half bridge rectifier formations of BR1, BR2, BR3 of combiner circuit 21 is transformed into required direct voltage, send into VI+, VI-end points after synthesizing unified direct current with storage battery 11 power supplys by D1 input, provide voltage feedback signal by this end points to monitoring unit 3, and send into converting unit 8 through fuse F1, the F2 of power distribution circuit 22.C1, C2 capacitor are made filtering usefulness among the figure, and L1, L2, L3 are respectively the input of ship electricity, storage battery input and output indicator.

See also Fig. 3, the monitoring unit 3 of present embodiment is by direct voltage observation circuit 31 and 35, low-voltage variation and overload protection integrated treatment circuit 32 and 38,

overload observation circuit

341 and 37, alarm and protection drive circuit 33 and 36.The R21 of direct voltage observation circuit 31, C13, C14, VD1 provide 12V operating voltage for IC9:A; the sampling voltage that VD2, C15, W3 will synthesize power supply 2 is added to the IC9:A6 pin; and with 5 pin on compare by the reference voltage after R22, the R23 dividing potential drop; when the voltage of synthetic power supply 2 drops to the protection point of setting; IC9:A6 pin voltage will be lower than 5 pin voltages; 12 volts of voltages of 7 pin output drive optocoupler IC8 conducting through R24, and W3 can regulate the protection point." 341 "; " 342 "; the circuit structure of " 343 " is identical; it is the observation circuit of three-phase inversion power tube overload; here judge that inversion output unit power tube (sees also Fig. 6; whether Fig. 7) transship is the height of complying with its saturation voltage drop; when power tube transships; its saturation voltage drop will raise; equally when the temperature of power tube raises; its saturation voltage drop also raises; by D9A; D10A is with power tube DC1 in the three-phase inversion output unit 6 (referring to Fig. 6); the DC2 saturation voltage drop is introduced 6 pin of IC7:B; 7 pin are reference voltage; during the power tube overload; saturation voltage drop raises, and IC7:B6 pin voltage raises, when surpassing 7 pin reference voltages; IC7:B1 pin output low level " 0 " volt, W5A adjustable protective point.The low-voltage variation and overload protection integrated treatment circuit 32 courses of work are such: when to low-voltage variation; optocoupler IC8 conducting in the direct

voltage observation circuit

31,9 pin of IC7:A are low level, therefore 14 pin output low levels; again because R17＜R16, so the IC6:A6 pin is a low level by clamper.When overload, because the effect of

overload observation circuit

341 or 342 or 343 circuit, the IC6:A6 pin be low level too, IC6:A, IC6:B formation R-S trigger, and wherein the IC6:B1 pin R8 resistance that is connected to three-phase inversion control unit 4 is accepted reset pulse.When the IC6:A6 pin becomes low level; its 4 pin will be exported high level; pass through the R19 of alarm and protection drive circuit 33 on the one hand; C11; the effect of IC6:C; by IC12A:A and IC12A:B (consult Fig. 4) the blockade driving pulse of IC6:C11 pin output low level signal to three-phase inversion control unit 4; finish the protection action; simultaneously; IC6:D; R20; C12; TR1 provides the alarm signal of protection to alarm unit 14; when the IC6:A4 pin is high level, C9 will pass through R17 on the other hand; D3 charges between IC6:B3 pin low period, and its negative pole current potential will descend gradually; C9 full charge behind certain hour; its negative pole current potential lies prostrate near " 0 ", at this moment, even overload or low pressure situation disappear; be that the IC6:A6 pin attempts to recover high level; but because C9 negative pole current potential is 0 volt, thus the IC6:A6 pin by the D1 clamper in 0 volt, promptly protect to lock.Shorter as low pressure or overload situations time of occurrence, promptly when descending seldom, C9 negative pole current potential just disappears, and then the IC6:A6 pin will recover high level; between the high period of IC6:B3 pin; IC6:A5,6 pin are all low level, and its 4 pin will revert to low level, i.e. protection automatically resets.Among Fig. 3,35 and 31,38 and 32,36 and 33,37 is all identical with 341 corresponding circuit theory and working conditions, and the former is used for the monitoring that single-phase inversion, the latter are used for three-phase inversion.T5 single-phase voltage feedback transformer among Fig. 3, T6, T7, T8 three-phase voltage feedback transformer, they will feed back to the R16 of single-phase inversion control unit 5 and the R33A of three-phase inversion control unit 4 (referring to Fig. 5, Fig. 4) respectively from the voltage signal of load 10.

See also Fig. 4, as shown in the figure, 411 is that three-phase square wave produces circuit among the figure, IC1:B and on every side element be oscillating circuit, its vibration output is as the clock of pulsqe distributor IC2, IC2 output Q0, Q1 ... Q5 exports high level pulse in turn under the clock effect, pulse duration equated with the clock cycle, through after after three inputs or door combination that connect, promptly export the three-phase square wave pulse.

421 is second-order low-pass filter, the square wave of input is filtered sinusoidal wave, and by the output of IC10 A:B14 pin, as baseline sinusoidal wave, its amplitude can be regulated by W4A, and the size of the amplitude of accommodation is also promptly regulated the height of output voltage.

431 is differential amplifier, is used to export voltage stabilizing.Be added on IC10A:C in-phase input end 3 pin from the baseline sinusoidal waves of 421 outputs by C18A, the voltage signal that feeds back from the feedback transformer of monitoring unit 3 is added on inverting input 2 pin by R33A.Then the output of IC10A:C1 pin is shown below:

V1=AV·(V3-V2)

In the formula: AV, V3, V2 are respectively gain, baseline sinusoidal wave and the feedback signal voltage of differential amplifier.

Like this, when output voltage descended, V2 descended, and V1 rises, and output voltage is gone up; When output voltage raise, V2 rose, and V1 descends, and output voltage is descended, and reached the stable of output voltage.

The 45th, triangular-wave generator, IC4:A, IC4:B form the R-S trigger, IC6:A, IC6:B are voltage comparator, its output signal is as the triggering signal of R-S trigger, the square-wave signal of R-S trigger output forms triangular signal behind W2, R11, C7 integration, output to 441 parts through C6, C7 coupling respectively again, as the carrier wave of sine PWM circuit.Employing triggers the R-S trigger by comparator and forms square wave, and integration forms the such circuit form of triangular wave again, can guarantee that when having W2 to regulate the triangular wave frequency, it is constant that the triangular wave amplitude keeps.C5, R7, R8 form the required reset pulse of protective circuit among the figure.

441 is pulse-width modulation circuit.Two comparators among the figure are done modulation and are used.By the pulse width signal of comparator IC11A:D2 pin sine wave output when the positive half cycle, the pulse width signal during IC11A:C1 pin output negative half period, the effect of IC12A:A and IC12A:B is the output that (9,12 pin become low level) blocks pulse width signal when protection takes place.

422,423 and 421,432,433 and 431,442,443 with 441 each is corresponding among Fig. 4, and its circuit theory and function are all corresponding identical.

See also Fig. 5, this is the schematic circuit of single-phase inversion control unit 5.As shown in the figure, illustrate that pulse-width modulation circuit 441, triangular-wave generator 45, differential amplifier 431 and the square wave generation circuit 411 of three-phase inversion control unit 4 (consulting Fig. 4) are corresponding identical with low pass filter 421 circuit theories and the course of work among pulse-width modulation circuit 54 among the figure, triangular-wave generator 53, differential amplifier 52, vibration filter circuit 51 and the last figure.

See also Fig. 6, this is the schematic circuit of three-phase inversion output unit 6, and as shown in the figure, T1, T2, T3 are contravariant transformers, and N1 is the inverter power assembly.The three phase sine pulse width signal of being sent here by pulse-width modulation circuit 441,442,443 drives the break-make that inverter power component N 1 is controlled in the back through TR2-TR5 respectively, the direct current of being sent here through the M11 of converting unit 8 contacts of contactor by synthetic power supply 2 (referring to Fig. 2, Fig. 8) is transformed into alternating voltage, isolate, boost and respectively through R1, C1 through T1, T2, T3, R2, C2 form three phase sine voltage after R3, the C3 filtering.The effect of R63, VD3, C22 is to apply certain voltage at inverter power component N 1 blocking interval between its grid one source pole among the figure, quickens its turn off process and makes its shutoff more reliable.The feedback signal in (PCC) power when overload is by DA1, DA2, DB1, DB2, and DC1, DC2 are to 341,342,343 of monitoring unit 3.

See also Fig. 7, this is the single-phase output unit schematic circuit of present embodiment, and this figure is identical with counterpart among Fig. 6, and increasing L1 among the figure is in order to strengthen the output filter effect.T5 is a control voltage required when the frequency conversion electricity is become the startup emergency generator, is caused the J1 contact sets of converting unit 8 by VR1, VS1.

See also Fig. 8, as shown in the figure, S2, S1 are respectively three-phase, single phase poaer supply diverter switch, and the supply line of load 10 and three-phase inversion output unit 6 or emergency generator 12 is connected in selection, select to connect the supply line of load 10 and single-phase inversion output unit 7 or frequency converter 13.AN2, AN1 are three-phase, single-phase inversion circuit working switch, the circuit of power distribution circuit 22 and inversion output unit in the certainly synthetic power supply 2 of corresponding connection.P1 is a DC power supplier, with IC1-IC4, as the working power of control circuit.DC power supply single-phase, the three-phase inversion output that KM1, KM2 control respectively, the remote control switch of J1 when starting emergency generator.

See also Fig. 9, this is the schematic circuit of the charger of present embodiment.As shown in the figure, S1 is a charge switch, and LED1 is a power supply indicator, and T1 is a constant voltage transformer, the resonant capacitance when C1 is T1 work, and BR1, BR2 are the rectification half-bridge.Input power supply VIN introduces from FU1, FU2, and charging current is exported from FU3, FU4.

Embodiment of the present utility model does not do special provision to the self-starting of emergency generator 12, the working line and the alarm unit 14 of frequency converter 13, but the different enforcement of root a tree name needs to be provided with.

Claims

1, a kind of navigation uninterrupted power supply, comprise synthetic power supply 2, it is characterized in that being connected in addition monitoring unit 3, the converting unit 8 of load 10, they respectively with three-phase inversion control unit 4, three-phase inversion output unit 6 and single-phase inversion control unit 5, single-phase inversion output unit 7 in turn circuit connect to constitute two closed loop structures; Be linked in the transformer 1 and the storage battery 11 of synthetic power supply 2 and be linked in the emergency generator 12 of converting unit 8 and frequency converter 13 formations provide many input elements from electric energy to load 10; Storage battery 11 connects with charger 9 circuit.

2, the described power supply of root a tree name claim 1, synthetic power supply 2 is made up of combiner circuit 21 and power distribution circuit 22, it is characterized in that combiner circuit 21 connects with transformer 1 and 11 one-tenth parallel circuitss of storage battery.

3, the described power supply of root a tree name claim 1 is characterized in that monitoring unit 3 and three-phase inversion control unit 4, three-phase inversion output unit 6 circuit successively are connected into the close loop control circuit structure; Monitoring unit 3 is coupled to the close loop control circuit structure with single-phase inversion control unit 5, single-phase inversion output unit 7 circuit successively.

4, root a tree name claim 1,2,3 described power supplys is characterized in that the converting unit 8 and the monitoring unit 3 that are connected in load 10 are coupled to two closed loop structures with three-phase inversion control unit 4, three-phase inversion output unit 6 and single-phase inversion control unit 5, single-phase inversion output unit 7 circuit respectively.