SU1555833A1 - Device for charging energy into capacitance storage - Google Patents

Abstract

The invention relates to electrical engineering, in particular, devices for charging capacitive energy stores, and can be used to power impulse current generators and voltages. The aim of the invention is to increase the efficiency and reliability of the device. The device for charging the capacitive energy storage device contains the terminals for connecting the power supply, serially connected switches 1 and 2, the primary winding 3 of the transformer 4, the secondary winding 5 of the transformer, rectifier 6, storage capacitor 7, voltage sensor 8, load 9, control unit 10 , a charge current calculation unit 11, an adder 12, a current setting device 13, a voltage limiting unit 14, a setting current driver 15, a voltage setting device 16, a current sensor 17. The introduction of negative current feedback and positive voltage allows more accurate realization of the capacitive energy storage in constant current mode. 1 hp f-ly, 4 ill.

Description

pulsed current is drawn from the network.

With equal voltages 28, 29 and 3T (U8 up, the error voltage 30 and the iosh (Fig., B) of the current feedback equals zero and the charging current becomes unchanged. Now the change in the duration of the pulses 3 and 35 of the control keys 1 and 2, The switching angles vL -tl in the range of 0Јolu W2 occurs in the process of charging the capacitor 7 only by changing the voltage U taken from the voltage sensor 8 (Fig. b, b).

0

ka connected between the rectifier and the storage capacitor, the output is connected via the charging current calculator with the subtractive input of the adder, the output of which is connected to the input of the control unit, the first input of the adder is connected to the output of the current setting unit, the second output of which is connected to the current setting device through the driver current, the first input of the voltage limiter is connected to the sensor

voltage, and the second input - to the control voltage.

2. The device according to claim 1, characterized in that the driver for setting current consists of a series-connected adjustable current generator and a capacitor,

8338

parallel to which, a voltage limiter and a discharge switch are connected, the control input of which is connected to the input, and the connection point of the current generator and the capacitor via the scaling unit to the output of the driver circuit.

Claims (2)

The claims by charging current and voltage across the capacitor 7, the charging current calculation unit 11 (on average or any other value), the voltage sensor 8, and the voltage level limiting unit 14 are activated. Now, all the inputs of the adder 12 receive voltage signals U ₈ , and the total voltage 33, determined from the equation Щ. = Uj - U _& + U ^, is supplied to the input of the control unit 10. After several periods of voltage 27 of the network, the switching angle of the key 1 will reach oC = o! _k , (Fig. 4, a) ·. Here, at intervals 0 · =, οίέοί _κ , and 'Τ-οίκ, άοί ^' ϊΓ, the primary winding 3 of transformer 4 is connected by key 1 to the mains, and at the interval £ Ϊ · -οί _{Κ |} short-circuited by key 2, while the pulse current is drawn from the network. When equal voltages 28, 29 and 31 (U = ₈ u), the voltage 30 and the error _err (Fig. 4, b) the feedback current is zero and the charging current becomes constant. Now, the change in the duration of the control pulses 34 and 35 of the keys 1 and 2, as well as the switching angles d in the range Οέο ^ ί ^ / Σ, occurs during charging of the capacitor 7 only by changing the voltage Uu taken from the voltage sensor 8 '(Fig. 4, b) 1. A device for charging a capacitive energy storage device containing 30 terminals for connecting the power supply, in parallel with which two series-connected keys are connected, parallel to one of which the primary winding of the transformer is connected, a storage capacitor with a voltage and load sensor connected in parallel to it is connected to the secondary winding of the transformer through the rectifier, the control inputs of the keys are connected ₄ θ yen with a control unit, characterized in that, in order to increase efficiency and reliability, a charging current calculation unit, an adder, a current adjuster, a restriction unit are introduced 45 voltage, a driver of the driving current, a voltage regulator, a current sensor connected between the rectifier and the storage capacitor, the output is connected via a 5θ current calculating unit to the subtracting input of the adder, the output of which is connected to the input of the control unit, the first input of the adder is connected to the output of the current adjuster, and the second input - with the first output of the voltage limiting unit, the second output of which is connected through the driver of the driving current to the input of the current master, the first input of the voltage limiter is connected to the sensor iku 1555833 voltage, and the second input to the voltage regulator. 2. The device according to claim 1, characterized in that the driver of the driving current consists of series-connected adjustable current generator and capacitor, in parallel with which a voltage limiter and a discharge key are connected, the control input of which is connected to the input, and the connection point of the current generator and capacitor through the scaling unit - with the output of the driver of the driving current.