RU99660U1 - DC ELECTRIC MACHINE - Google Patents

Abstract

 An electric machine DC source containing two alternately working identical electric units, each of which contains a functionally connected battery, a primary engine, a generator and common buses to which consumers are connected, characterized in that a DC generator is used as a generator, and batteries of both electric units connected to the first device for automatically switching on the reserve, direct current generators of both electric units are connected to the second a device for automatically switching on a reserve, and the outputs of these devices for automatically switching on a reserve are connected to a third device for automatically switching on a reserve, the output of which is connected to common buses, and diodes are installed in the positive outputs of the named batteries, DC generators, and the first and second devices for automatically switching on the reserve.

Description

The utility model relates to the field of electrical engineering and can be used as a source of direct current electricity.

Known electrical machine source containing continuously operating primary and backup electrical generators, the first and second switches, each of which contains power contacts, a control coil, first and second NC contacts, output buses, a static power channel containing the first and second battery, DC bus current, inverter switch, three-phase inverter and inverter load switch, and the negative terminals of these batteries are connected directly to the negative DC bus Indirectly, the positive terminals of these batteries are connected to the positive DC bus through the corresponding first and second diodes, the DC buses are connected to the inverter input, through the inverter switch, the inverter load switch, contain power contacts and a control coil, the corresponding rectifiers are connected to the output of these generators voltage control units, each of which contains a three-phase rectification circuit, a smoothing filter, to which the circuit is connected in series from x coils of the first and second switch operating normally closed contact of the second switch, and switch the inverter includes series connected first break contacts of the first and second switches [1]. In this source, in case of failure of the main generator, the backup automatically turns on, and in case of failure of both generators, consumers receive energy from an inverter connected to batteries connected in parallel, which ensures uninterrupted power supply to critical consumers. The described source has found wide application in power supply systems of autonomous facilities, however its circuit is applicable only for supplying AC consumers.

The required technical result is to provide continuous power supply to DC consumers.

The technical result is achieved by the fact that in an electric machine source containing two alternately working identical electrical units, each of which contains functionally connected: a storage battery, a primary engine, a generator and common buses, a DC generator is used as a generator, the batteries of both units are connected to the first device for automatically switching on the reserve, DC generators of both electric units are connected to the second device Cesky off allowance, and the outputs of said devices automatically shutdown reserve coupled to the third device an automatic transfer switch, the output of which is connected to the common bus bars, wherein a plus-outputs of said accumulator batteries, DC generators, first and second devices automatic transfer switch mounted diodes.

The drawing shows a structural diagram of an electric machine DC source.

The source contains a first power unit 1, containing a battery (AB 1) 1-1, a primary engine (PD 1) 1-2 and a direct current generator (GPT 1) 1-3, which are functionally interconnected, a second power unit 2, identical to the power unit 1, comprising a battery (AB 2) 2-1, a primary engine (PD 2) 2-2, a direct current generator (GPT 2) 2-3, wherein the batteries 1-1 and 2-1 are connected to the first automatic switching device reserve (АВР 1) 4, direct current generators 1-3 and 2-3 of electrical units 1 and 2, respectively, connected to the second device for automatically switching on the reserve (ABP 2) 5, and the conclusions (not marked) of devices for automatically switching on the reserve 4 and 5 are connected to the third device for automatically switching on the reserve (ABP 3) 6, the output of which (not marked) is connected to the common buses 3 , while in the positive conclusions: (not indicated) batteries 1-1 and 2-1, direct current generators 1-3 and 2-3, the first 4 and second 5 automatic backup devices included diodes (not marked). As rechargeable batteries 1-1 and 2-1, lead or nickel-cadmium batteries used in moving objects can be used. Primary engines 1-2 and 2-2 can be gasoline or diesel, depending on the power of electrical units 1 and 2 [2]. DC generators 1-3 and 2-3 can be generators with independent or parallel excitation, which are widely used in power supply systems. The automatic switching devices 4, 5 and 6 can be identical, which are a series-connected closed contact signaling the operating state of, for example, the battery 1-1 and an open contact indicating the inoperative state of the battery 2-1. Typically, automatic reserve switching devices (ASWRs) are triggered by a voltage monitoring relay (LVV) installed at the output of batteries and generators of all types, as well as at the inputs of an industrial network. Thus, all elements of a DC electric machine source are serially produced by domestic industry.

The source works as follows.

Let the electric unit 1 is the main one and all its elements 1-1, 1-2 and 1-3 are operational, then when the primary engine 1-2 is turned on for the discharge of the battery, the primary engine 1-2 will start working and its rotation will be transmitted to the direct current generator 1-3 . The voltage of the generator 1-3 is supplied to the WAVR 5, then to the WAVR 6, from where it is supplied to the common bus 3 and all consumers will begin to function. The voltage of the generator 1-3 is slightly higher than the voltage of the batteries 1-1 and 2-1, so the diodes installed in the positive terminals of all elements will be locked. If the power unit 1 is faulty, then the power unit 2 will start to work, provided that its elements 2-1, 2-2 and 2-3 are working, according to the algorithm described above. In the event of a failure of the 1-3 and 2–3 generators, consumers will receive electricity from the 1–1 or 2–1 battery through the circuit: a working battery (1–1 or 2–1), UAVR 4, UVR 6, common buses 3 .

Thus, in the proposed electric machine DC source, power is supplied to consumers in a continuous mode regardless of the state of electrical units with a significantly simplified scheme.

Sources taken into account:

[one]. RF patent for utility model No. 63615 dated 05/27/2007 according to the application No. 2007104255 dated February 6, 2007 "Two-machine power supply unit".

[2]. Electrotechnical means of engineering weapons. Ed. P.V. Yankauskas. Moscow: USSR Ministry of Defense, 1989, 350 p.

Claims (1)

An electric machine DC source containing two alternately working identical electric units, each of which contains a functionally connected battery, a primary engine, a generator and common buses to which consumers are connected, characterized in that a DC generator is used as a generator, and batteries of both electric units connected to the first device for automatically switching on the reserve, direct current generators of both electric units are connected to the second a device for automatically switching on a reserve, and the outputs of these devices for automatically switching on a reserve are connected to a third device for automatically switching on a reserve, the output of which is connected to common buses, and diodes are installed in the positive outputs of the named batteries, DC generators, and the first and second devices for automatically switching on the reserve.