SU950561A1 - Traction current network for electric vehicles - Google Patents

Description

The invention relates to electric vehicles and can be used in power supply devices.

The devices of the electric transport traction network are known, consisting of a contact suspension divided into a number of sections by insulators, power sources connected to a contact network and rails at each of the sections tl.

However, these devices do not have sufficient reliability of operation due to possible interruptions in the power supply of the transport upon exit from one of the power sources.

The closest to the proposed technical entity is a traction network of electric transport, containing a contact suspension, which is divided into a number of sections by insulators, in parallel which include semiconductor diodes, power sources connected to the contact network and rails at each of the sections 2}.

However, this device does not provide the required reliability of work due to the impossibility of automatic

 connect the power source of one plot to another.

The purpose of the invention is to increase the reliability of the known device.

This goal is achieved by the fact that parallel semiconductor diodes include additional semiconductor diodes.

The drawing shows a principle scheme of the device.

The device includes sections 1-3.

15

Between the areas are separated by insulators 4 and, the first of which separates sections 1 and 2, the second sections 2 and 3. Each section is equipped with a power source 6-8, connected

20 respectively to sections 1-3. In the same sequence, consumers 9-11 are connected to these sites. Between the end of section 1 and the beginning of section 2, main and additional semi-conductor diodes 12 and 13 are connected counter-parallelly, and between the end of section 2 and the beginning of section 3, diodes 14 and 15, respectively.

Claims (2)

The device works as follows. There are two possible network operation modes: normal and emergency. During normal operation, sites 1-3, to which consumers 9–11 are connected, respectively, have power supply points 6–8 that have the same voltage. The semiconductor diodes 12 and 13 (between the end of section 1 and the beginning of section 2), as well as diodes 14 and 15 (between the end of section 2 and beginning of section 3), connected in parallel-parallel, do not flow as the potential difference between end of section 1 and the beginning of the plot is theoretically zero. According to the Rules of technical operation of the tram and. Trolleybus voltage at the ends of adjacent sections should be no more than 30 V. In case of emergency mode, i.e. If one of the power sources fails, for example, source 6 of section 1, a potential difference arises between the ends of adjacent sections 1 and 2, is equal to the voltage of power supply 7 of section 2, as a result of which the power supply of consumer 9 connected to section 1 When you exit from the power supply sources of other areas, consumers receive electricity through the corresponding diodes from adjacent areas. After the elimination of the accident, the normal operation of the DC network is automatically restored. The use of the proposed device allows to increase the reliability of power supply of urban electric transport. Claims of the T electric transport network containing a contact suspension divided into a number of sections by insulators, in parallel with which are included semiconductor diodes, power sources connected to the contact network and rails at each of the sections, in order to increase reliability , parallel to the semiconductor diodes included are additional anti-semiconductor diodes. Sources of information taken in. attention during examination 1, Afanasyev A.S. and others. Contact and cable networks of trams and trolley buses. M., Transport, 1979, p.5. 2. Patent of the GDR No. 72284, cl. In 60 M 1/00, 1970 (prototype).