SU1624626A1 - Reversible current regulator for electroplating and electrochemistry - Google Patents

Abstract

The invention relates to a converter technique and it can be used as a power source for electroplating and electrochemical equipment. The purpose of the invention is to improve the quality of the products obtained by ensuring the stability of the parameters of the output current pulses. The device consists of two current sources 1 and 2, one of the terminals of which are combined into a common point, and the load 3 is connected between the same terminals of the same name. Each of the sources is shrouded by one of the controlled keys 4, 5. The device is indicated as well as using as sources The energy of the current sources provides regulation of the magnitude, duration, and direction of the current flow in the load, and also increases the speed of the technological process. 2 hp ff, 2 ill. and SS (L

Description

serially connected controls in JQ of the positive polarity of the regulated

key 6 and throttle 7, as well as a reverse diode 8 connected between the common reversing current control point and the connection point of the control key 6 and throttle 7. The other end of the throttles 7 is one of the output poles of the current source and connected to the load 3. The other contact of the control key 6 is connected to one of the poles of the voltage source 9. The other pole of the voltage source 9 is connected to the common point of the reversible current controller. A current source 2 is similarly executed, with both current sources receiving energy from a common voltage source 9. In order to improve the mode of operation of the voltage source 9, especially at high power consumed by the load, at least one of the current sources, for example 2, is expediently performed in a multiphase circuit consisting of parallel-connected pulse controllers similar to the regulated current source 1 (figure 2).

Controlled keys in the proposed scheme can be performed on any modern key semiconductor

40

45

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magnitudes and durations with steep fronts.

In order to make adjustments to the current flux, current sources can be made in the form of pulse controllers with sequential insertion of throttle. With the closure of the club 6, the choke 7 stores energy from the voltage source 9. When the key is a whip 6, the throttle current 7 is closed through the reverse diode 8, apart from the accumulated energy. Having carried out the appropriate control to chom 6, it is possible to maintain a current of the required size in the choke 7 and to regulate it. A logical source of current 2 can be constructed. If from one of the current sources, for example, 2, it is necessary to transfer a current of sufficiently large magnitude to the load, it is advisable to construct the indicated source according to a multiphase circuit. At the same time, such a source is a parallel connection of m pulsed controllers with sequential switching of throttles, similar to current source 1. Managed keys each

five

0

five

0

five

magnitudes and durations with steep fronts.

In order to adjust the magnitude of the current, the current sources can be made in the form of pulse controllers with the series switching on of the choke switches. With the closure of the key 6 in the choke 7, energy is stored from the source 9 of the voltage. When key 6 is open, the current of the throttle 7 is closed through the reverse diode 8, giving away the accumulated energy. Having carried out the appropriate control of the key 6, it is possible to maintain the current of the required value in the choke 7 and to regulate it. Similarly, a current source 2 can be constructed. If from one of the current sources, for example 2, it is necessary to transfer a current of sufficiently large magnitude to the load, it is advisable to construct the indicated source according to a multiphase scheme. At the same time, such a source is a parallel connection of m pulsed regulators with a series connection of throttles similar to the current source 1. Managed keys of each

of the t regulators operate at the same frequency, but with a phase shift one relative to the other. In this case, the mode of operation of the input voltage source 9 is facilitated, the total mass and dimensional parameters of the chokes are reduced, and the mode of operation of the controlled switches in the current sources is ensured.

Thus, the proposed reversible current controller allows effective regulation of the magnitude, duration, and direction of the current flow in the load, i.e. implement reverse pulse current technology in electroplating and electrochemical machining. The use of reverse pulse current technologies of a gov- ernment increases the speed of the technological process several times, significantly improves the quality of the products, and reduces the consumption of electrical energy.

Claims (3)

1. Reversible current controller for electroplating and electrochemistry, the contents of the two sources of energy, 0 five 0 five 0 some of the outputs are combined into a common point, two controllable keys, each of which is connected to another output of one of the energy sources by one output, and a load circuit, characterized in that, in order to improve the quality of the product obtained by ensuring the stability of the output current pulse parameters, the load circuit is connected between the indicated other similarly named terminals of the energy sources, the other outputs of the controlled keys are connected to a common point, and each of the energy sources is designed as a current source, 2. The current regulator according to claim 1, which is based on the fact that the current sources are made in the form of pulse controllers with a series connection of the throttle, and are connected to a common voltage source. 3. The regulator according to claims 1 and 2, which is based on the fact that, in order to improve the operating mode of the input voltage source at high power, at least one of the pulse controllers with the series connection of the throttle is made on a multiphase pattern.