SU1610477A1 - Multichannel power supply system - Google Patents

Abstract

The invention relates to electrical engineering, in particular to converter equipment. The purpose of the invention is to increase the reliability and accuracy of the control of the distribution of the current between the channels, as well as to ensure universality. Each channel is made according to the principle of compensation stabilization and contains a current sensor 7 of the regulating element 6, there is a common load current sensor 2, the information output of which is connected to the information input of the current distribution control unit 12, and the unit 11 for setting the channel load. Unit 12 includes controlled resistances 13 and sensors 14 for controlled resistances by the number of channels. Such a construction of block 12 makes it possible to improve the x-ki of the device, since On node 8 of the control of the regulating element 6, additional information about changes in the magnitudes of the flowing currents appears. 1 il.

Description

The invention relates to electrical engineering, in particular to converting technology, and can be used in multi-channel (multiphase) power supply systems (BOT).

The purpose of the invention is to increase the reliability and accuracy of controlling the distribution of current between channels, as well as ensuring versatility.

The drawing shows the function. BOT scheme.

The power supply system contains N identical channels 1, connected by outputs through the sensor 2 load current 'And load 3 to the common wire 4 of the BOT. Each channel 1 consists of a series-connected primary source 5, a regulating element 6 of the sensor 7 that, the output of channel 1, switched on to the regulating element 6, the first input connected to the output of the sensor ₍ 7 current regulating element.

'Amplifier-meter 9 mismatch first input connected to the output of the source 10 of the reference voltage, the second input with the outputs of all. channel 1, and the output is connected to the second inputs of the control nodes 8 of all channels 1. In addition, the SES contains a block 11 for specifying the degree of load of channels by current (BPSS), which has N outputs, and a current distribution control unit (BUT) 12. The composition of the BUT 12 includes N controlled resistances (DC) 13 and N sensors 14 of the current controlled resistance (DTUS), connected in series between the information output of the sensor 2 of the load current and the bypass wire 4 SEP. The control inputs of each of the N controlled resistances 13 are connected to the corresponding outputs of the BSSZ 11. The outputs of each of the N DTUSs are connected to the third input of the control unit 8 of the corresponding channel 1.

Zom system.

Block 11 channels of N their guides degree of loading of each channel 1 depending on the control target, for example, when used as primary sources SEP batteries - a function _ί ste operates as follows obra50 reference degree of loading current generates at every output signals opredeli55 penalties for charging batteries. The signals from each of the N outputs BZZZ 11 are fed to the control. the inputs of the respective DC 13, changing the value of their ohmic resistance, N parallel connected DC 13 with the sensors 14 are a controlled divider of the current coming from the information output of the sensor 2 of the load current. The current i-ro US 13 is proportional to part of the load current. The coefficient K · is equal to the ratio where Y | provided by the coefficients K_ Υί

N ’

ΣΥ;

= 5 conductivity of i-ro DC, determined by the value of the signal coming from i-ro output · БЗЗЗ 11 to i control input of DC 13.

Moreover, the total value is always

N

Μ X.Y;

2 /. The current of each US 13 is measured by the corresponding sensor 14 of the current controlled resistance and is supplied to the third input of the control unit 8. The transfer coefficient of the i-th DTUS 14 is selected as the ratio of the transfer coefficient of the sensor: current i-ro of the control element to the transfer coefficient of the sensor 2 of the load current. In control unit 8, the signal is compared with the i-ro DTUS 14 (proportional K signal; ’1 ^) and the signal 7 of the current sensor of the i-ro channel control element (signal proportional to the current of the i-ro channel control element 6). The received current mismatch signal in total with the voltage mismatch signal is fed to the control input of the regulating element 6 and simultaneously provide voltage stabilization at the load and the required current load of the i-ro channel of the SES, I

When the signal changes at least at one output of the BZSZ 11, the currents are redistributed between the circuits of the current distribution control unit 12 in accordance with the indicated ratio due to a change in the conductivities of the corresponding controlled resistance, which causes a redistribution of signals at the third inputs of the control nodes 8 of all channels 1. the sum of the currents of all channels remains equal to the load current, since the total current of BUT 12 remains unchanged.

Claims (1)

Claim A multi-channel power supply system containing η channels connected by outputs through a load current sensor to an output for connecting a load, a reference voltage source, a mismatch signal amplifier, connected by the first input to the output of the reference voltage source, and the second input to the outputs of the channels, each of the channels includes a primary source, a regulating element, and a current sensor of the regulating element, connected in series and connected to the channel output, the control unit controls m element with three inputs and one output, connected by one input to the output of the current sensor of the regulating element, the second inputs to the output of the meter – amplifier of the error signal, and by the output to the control input of the regulating element, the unit for setting the degree of load; current channels with N outputs and a current distribution control unit with an information input connected to the information output of the load current sensor, N control inputs connected to corresponding outputs of the current channel load degree setting unit, N outputs connected to the third inputs of the control nodes of the regulating element of the corresponding channel, while the current distribution control unit includes N controlled resistances, 10 of which one of the outputs is connected to the information input of the current distribution control unit, characterized in that, for the purpose of to increase the reliability and accuracy of controlling the current distribution between the channels, as well as ensuring universality, N current-controlled sensors of current resistance are introduced into the current distribution control unit voltage, 20 connected in series with the corresponding controlled resistances, free leads connected to the common bus, and information outputs - with the corresponding outputs of the current distribution control unit, in addition, the free outputs of the remaining Ν-1 controlled resistances are connected to the information input of the current distribution control unit, 30 and the coefficient the transmission of the current sensor i-ro controlled resistance is equal to the ratio of the transmission coefficient of the current sensor of the regulatory element of the i-ro channel to the coefficient load current sensor itsientu transmission (i = l, 2 ,, .., Ν), as well as a load current sensor used in the sensor, converting the measured current into a proportional current. ; Compiled by S. Sitko