SU1001009A1 - Dc powre supply source active load simulator - Google Patents

Description

one

The invention relates to electrical engineering and is intended for use in test systems for secondary power sources.

It is known a load device based on a semiconductor / 1 converter, which provides for the recovery of the energy of the tested power source to the network, and, in particular, a network-driven thyristor inverter with a phase control unit (load current control), as well as a voltage matching transformer ; inverter and network fl.

 The non-residues of the known device are determined by the considerable mass and dimensions due to the use of a transformer operating at the grid frequency as a matching element.

The closest technical solution to the proposed one is an active load source dc simulator containing a series-connected key with the first unit. 2

control panel, input inductive-capacitive filter, uncontrolled autonomous inverter with transformer output, rectifier, output capacitor-coupled filter and network-driven in-

5 vert with second control unit. The indicated device possesses satisfactory mass-dimensional indices due to the fact that the letters are used as a matching element in the letters.

But increased frequency - However, this device has a rather narrow field of practical use, limited only by very powerful power sources, for which

A dropping shot at the moment the simulator is connected, due to the charge of the input filter capacitor, does not pose a danger in the sense of destruction of the components, spurious protection 20, etc.

The purpose of the invention is to expand the field of practical use of such a device by eliminating inrush current.

3.th

to the output of the tested power source at the time of connecting the simulator,

Psh: the goal is reached; By the fact that, kch1Ig- ;; direct current, containing a sequence of tatt ;, a co-component CLUU1 with the first control unit, an input inductive-capacitive filter, -controllable autonomous and} 1vertor with TRVNSS1Yrm.atomny output, rectifier, output.conductor-inductive filter and vedm network and) the vert with the second control unit, entered) .: measure; 1 dissolution:, time delay unit, and) first third and fourth, respectively, of the correct power supply unit, the condenser precharge unit and additional terminal to /; From the inputs of the meter Yusoglasov Connected to the terminals for 1D1 of the tested 15 power source, the Dutyun input - with the capacitors of the input filter, G1 connected to the output of the previous unit, aryte, g1nogo charge aa Conaens mountain, and - with the inputs of the first and third of its control units -ti t b. g of the time delay, crawl / key is included in the nvcKa circuit of the SECOND block

le; :: 1H. with in; lhodom block Bpeveif loi: zg.p: erzhkch,

i;.:: s-: Gzher has a set of functions, young ./;:, glad rr: - ..; ..1 of the aforesaid lmitator

Trash -5G :; : -Ki Y. SOUTHER; 1 PIT; 1 ILP LO-

a hundred nn-o current.

Power. The sanatorium consists of a lot of power;: unified 5 body: but co-ligate; cg cha. 1, input 1 g; 1X P 1:; iktivno-ek4 kostiogg1 filter 2; neuL |: - :: 1В .: tedio aBTOHfiMHo.ro HHiiep pa 3 with TpaTj -i-ni-.N.inTOpibxi, ohm 4, expander 5; the current capacitance-switchboard of which fk; -g1a 6 and the network-driven inverter V., 1 concurrent} {mon with unit 8 pack - with unit 8

7

. G- r; iiBep- op control rules ....;: measurement1 1.0 mismatch, yix (; / uJ which is a connection to the keys for 5, the dongle: -:; I tested and-; hchniknik to Byvolisli 1sokde sator input): ; filter 2s n uz.p 11 pre-charge of cocadensal c) a, according to the viyuod also a module-1 Y1YY to a kadensatorp zhodngsgs fkltra 2 and sn.bzh € chshy ildkentsyuyalig ... g- .; block 12 updavsni.; INPUT which, as well as BHO / (bpoca 8 up | avlench, is connected to the output -1; h generator of the disagreement; 3.ni. h, E about: new sgp.-1. e simulator contains .t the channel of direct communication for the stabilization of the load current, in KOTOpbjf the output t yes --- i-g

004

13 and the current setting device 14 of the load, also connected to their outputs, the error meter 15, the output of which is connected to the input of the control unit 9, to the start circuit of the control unit 9, namely to the split between the output of the load current setpoint 14 and the corresponding input of the error meter 15 vschcho KN K.LUCH 16, equipped with a block 17 of the control. The input of the control block 17 through the block 18 of the time delay of the output of the meter 10 from the receiver.

13, during the testing of the DC power source, the role of the active load is played by the network-driven inverter 7. The load current is controlled by changing the angle and controlling this inverter. The electric energy of the direct current is fed to the input and} of the shertor 7, is converted by it p, the energy of the alternating current and transmitted to the network. In static mode, the inverter 7, due to the negative feedback carried out using the error meter 15, stabilizes load current is at the level of the o-ring volume voltage in o.atl ;; to 14 load current,

Claims (2)

. to: ome} T connection of the simulator to -il: o ;; koy circuit "snyyvaemoy source i-; r.raHiisi viMeiCTCH prerequisites for the potential: L1K1Yu1; Eni uncontrolled throw TC.S ::; and ...: fi Koi-capacitor of the input filter 2 "x1sk / ;; :) lek. of the inrush current in g: horn: pag / l Yul1 device provided by p; l - .; ::p :: l charge aJHogo charge of this Ko} ii:, f.iCiTopa by node 11 to the voltage,.: o n; it is working: you have the voltage, the x-ray full-power. Condenser you-,.,. T about flltrg. b zar5gzh; ets simultaneously- -. -. i: o with input filter capacitor; Osk.) Luku autonomous inverter 3 for .ch.usao; .cji at the same time as node 11 :. 1b Immediately before the connection, cv.i -; mititor to the source under test, a 7-sar inverter with a home network: L- ;,. the limit aft of invertirog-anp, since the driving voltage ;; e of its control input, when the key 16 is open, is at the zero level ,. Inverter 7 is put into operation only after charging of the terminal:::: input 2 and output 6 switches; fklg.trub h aKni.j - ieHHH keys 1 and 16. The latter turns out to be possible only with the appearance of a zero signal. 10 mismatch, under the influence of which the control block 8 sends a command to connect the simulator to the tested power source, and control block 17 to switch the inverter 7 to the operating mode with a delay of the time longer than the switch-on time 1, the specified delay carried out with the help of a block of 18 BP delays. Thus, the proposed active load simulator, has high efficiency and improved weight and size indicators, however, is not characterized by switching surges. This circumstance deliberately excludes the development of various types of emergency processes in the tested power source when an active load simulator is connected to it and the unprogrammable triggers of its protection. Due to this, the practical application area of the proposed simulator is very wide, i.e. encompassing ot essentially almost all possible secondary sources of nutrition are constant at night. The formula of the invented Resistive Current Source Power Supply Simulator containing a series-connected key with the first control unit, an input inductive-capacitive filter, an unmanaged autonomous inverter with a transformer output, an output capacitor, an output capacitive-inductive filter and a network-driven inverter with a second control unit characterized in that, in order to expand the field of practical use by eliminating a current surge in the output circuit of the test power source at the time of connection simulator, a mismatch meter, a time delay block and, respectively, supplied with the third and fourth control blocks, a condenser pre-charge unit and an additional key, each one of the inputs of the mismatch meter connected to the terminals for connecting the tested power source, are connected to another input terminal with the input capacitor filter connected to the output of the condenser precharge unit, and the output with the inputs of the first and third control units and the time delay unit, An additional key is included in the start-up block of the BTOpoiX control unit, and the input of the fourth control unit is connected to the output of the time delay unit. Information sources, . taken into account in the examination 1. Avtorskoe ;, USSR certificate No. 376339, cl. H 62 R 9/42, 1976. 2. Zevkov DF, et al. Regenerable active load. - In book: Modulation converters of parameters of voltage and current. Ed. V. P. Obrusnik. Tomsk, Tomsk University Press, 1980, p. 120-125, fig. one.,