SU723720A1 - System for electric power supply for two voltage levels - Google Patents

Description

The invention relates to electrical engineering, namely to power supply systems. living objects, mainly cars and tractors.

Known power supply system of moving objects on two levels ear- zheniya ^5, comprising an AC generator coupled to a bridge rectifier, which is connected to the output of a battery, in series with a switch which is enabled through. ¹⁰ another battery, an electric starter connected to both batteries through an electric starter switch and. ₅

The disadvantage of this system is its low reliability due to the presence of more contact elements in the battery switch from parallel to serial connection.

The aim of the invention is to increase the reliability of the system.

This goal is achieved by the fact that the system is equipped with another rectifier bridge, the input of which is connected in parallel with the first rectifier bridge, and the output is connected to another battery.

The drawing shows a circuit diagram of the power supply system of a moving object at two voltage levels.

The power supply system contains an alternator 1 connected to the main 2 and additional 3 rectifier bridges', the outputs of which are respectively connected to the main 4 and additional 5 rechargeable batteries, interconnected via a switch 6. An electric starter 7 is connected to the series-connected batteries through a switch 8 electric starter.

The power supply system of a moving object on two levels strained the stump works as follows.

In the operating mode, from the generator 1 through the rectifier bridges 2 and 3, the rechargeable batteries 4 and 5 are recharged, respectively, and from the rectifier bridge 2, consumers are fed ₅ . When starting a moving object, turn on the switch 6, connecting the batteries 4 and 5 in series. After turning on the switch 8, the total voltage of the batteries 4 and 5 is applied to the electric starter 7, and the engine is started.

Wherein . the cathode group of the rectifier bridge 3 and the anode group of the rectifier bridge 2 are locked, thereby 15 preventing the discharge of the batteries 4 and 5 to the winding of the armature of the generator 1. At the same time, the cathode group of the rectifier bridge 2 and the anode group of the rectifier bridge 3 are short-circuited , thereby shorting the generator.

However, this mode is not harmful to the generator, since the lasts briefly, and the current value ²⁵ short synchronous generators with rectifiers are self-limiting current and not afraid even longer short vice Addi ctive.

Claims (1)

The invention relates to electrical engineering, in particular to electrical systems for moving objects, mainly automobiles and tractors. A known power supply system for moving objects on two voltage levels, comprising an alternating current generator connected to one rectifier bridge, to the output of which one battery battery is connected, sequentially with which another battery battery is connected through a switch battery m chorez electric starter switch oz. The disadvantage of such a system is its low reliability due to the presence of a large number of contact elements in the switch; the battery has only one battery from a parallel connection to the follower. The aim of the invention is to improve the reliability of the system. The goal is achieved by the fact that the system is equipped with another rectifying bridge, the input of which is connected in parallel to the first rectifying bridge, and the output to another battery. The drawing shows a schematic electrical diagram of the power supply system of a moving object at two voltage levels. The power supply system contains an alternator 1 connected to the main 2 and an additional 3 rectifying bridges, to wg, whose passages are connected to the main 4 and additional 5 batteries, connected through a switch 6, respectively. To series-connected batteries connected eloktrpstlrter 7 through switch 8 eloktrogtprtera. The power supply system of the single object to two levels of power JIHJI p, i6r melts as follows. 37 In the operating mode, from generator 1 through rectifying bridges 2 and 3 is injected, supply is supplied to battery 4 and 5, respectively, and consumers are supplied from rectifying bridge 2. When starting the movable object, switch 6 is turned on, and the batteries 4 and 5 are connected in series. After turning on the switch 8, the total voltage of the batteries 4 and 5 is applied to the electric starter 7, and the engine is started. Wherein . the cathode group of the rectifying bridge 3 and the anodic group of the rectifying bridge 2 are locked, thereby preventing the discharge of the battery batteries 4 and 5 to the winding of the generator core I. At the same time, the cathode group of the rectifier bridge 2 and the anodic group of the rectifier bridge 3 are short-circuited, thereby short-circuiting the generator as well. However, this mode does not pose a danger to the generator, since it is short-lived and the magnitude of the short-circuit current is limited due to the low rotational frequencies of the generator. In addition, synchronous generators with rectifiers used in the automotive industry and in the overseas mechanical engineering 04 are self-limiting over current and do not even suffer from long short circuits. The formula of the invention for a two-voltage power supply system of mobile objects, comprising an alternator connected to one rectifying bridge, to the output of which one battery is connected, in series with which another battery is turned on, the electric starter connected to both batteries through an electric starter switch, characterized in that, in order to increase the reliability of the system, it is equipped with another rectifying bridge, whose input is It is connected parallel to the first downstream bridge, and the output is connected to another battery. Sources of information taken into account in the examination I. Barabanov V. Ye. And others. Electrical equipment of tractors and automobiles. -M., Kolos, 1974, p. 377.