SU936332A1

SU936332A1 - Multimotor reversible electric drive

Info

Publication number: SU936332A1
Application number: SU802996453A
Authority: SU
Inventors: Виул Михайлович Пожидаев; Вадим Васильевич ОМЕЛЬЧЕНКО; Валерий Васильевич Шупрута
Original assignee: Военный Инженерный Краснознаменный Институт Им.А.Ф.Можайского
Priority date: 1980-10-27
Filing date: 1980-10-27
Publication date: 1982-06-15

Description

(5Ю МНОЯОДВИГАТЕЛЬНЫЙ РЕВЕРСИВНЫЙ (5th multipurpose reversing

II

Изобретение относитс к электротехнике и может быть использовано в приводе транспортных средств передвижени , например электрокарах и электромобил х.The invention relates to electrical engineering and can be used in driving motor vehicles, for example electric vehicles and electric vehicles.

Известны реверсивные электроприводы , содержащие электродвигатели посто нного тока, источники питами и ключи управлени МKnown reversible electric drives containing electric motors of direct current, power sources and control keys M

Недостатком их вл етс сложность схемы реверсировани , обусловленна наличием большого числа ключей.Their disadvantage is the complexity of the reversal scheme due to the presence of a large number of keys.

Известны также реверсивные электроприводы , в которых электродвигатель подсоединен к средней точке двух последовательно соединенных источников посто нного тока и содержащих трехпозиционный ключ 2 З,Also known are reversible electric drives in which an electric motor is connected to the midpoint of two series-connected DC sources and containing a three-position key 2 W,

Недостатком этих электроприводов вл етс неравномерное потребление энергии источника посто нного тока . При одном направлении вращени их питание осуществл етс от одного ЭЛЕКТРОПРИВОДThe disadvantage of these actuators is the uneven energy consumption of the DC source. In one direction of rotation, they are powered from one ELECTRIC DRIVE

источника, а при другом направлении вращени - от второго источника.source, and with a different direction of rotation - from the second source.

Наиболее близким к предлагаемому вл етс многодвигательный электропривод , содержащий два электродвигател посто нного тока, подключенные через контактор к двум источникам питани 3 3joT электропривод имеет простую схему управлени , (охран емую при ис10 пользовании в приводе двух и более электродвигателей.Closest to the present invention is a multi-motor electric drive containing two DC electric motors connected via a contactor to two power sources. The 3 3T electric motor has a simple control circuit (protected when two electric motors are used in the drive.

Недостатком-зтого электропривода вл етс неравномерное потребление Энергии источников питани .The disadvantage of this electric drive is the uneven energy consumption of power sources.

«5"five

Цель изобретени - повышение экономичности использовани энергии источников питани .The purpose of the invention is to increase the efficiency of energy use of power sources.

Поставленна цель достигаетс тем, что корна обмотка одного The goal is achieved by the fact that the core winding one

Claims

A 20 motor is connected between the same clips of different power sources, and the root winding of the second motor between the other clips of the same power source, the contactor is made of two keys, each of which is connected between the different clips of the power sources. Each key is made on-off and one of the fixed contacts of one of the keys is connected to the fixed contact of the other. In FIG. 1 shows a diagram of a multi motor reverse electric drive; in fig. 2 is a diagram of a multi-motor reversible electric drive with the possibility of dynamic braking. The device (Fig. 1) contains electric motors 1 and 2 with excitation windings 3 and, the main windings of which are connected respectively to the power source for 5 and 6 hours, cut keys 7 and 8. To maintain the dynamic braking mode (Fig. 2), the keys are double. with additional contacts 9, 10, 11, and 12, two of which 11 and 12 are interconnected. In the device, the electric motor 1 is connected between the positive poles of the power sources 5 and 6, and the electric motor 2 - between the negative poles: the same sources. The opposite poles of sources 5 and 6 are interconnected through a key 7 and 8. The emf of sources 5 and 6 are equal to each other. The excitation windings 3 and C of the electric motors are powered from an external source or from those sources 5 and 6 (the switching circuit of the excitation windings is not shown). The multi-motor reversing electric drive works as follows. "With open-ended keys 7 and 8, the motor windings are under the influence of the voltage difference (EMF) of the sources. Since the EMF of the sources are equal, there is no current in the circuit of the windings of the electric motors of Korea, and they do not rotate with. When the key 7 is closed and the key 8 is unlocked, the winding of the engine core 1 starts to be powered from source 5 and the winding of the engine core 2 from source 6. Both electric motors come into rotation. When the key 7 is opened and the key of the key 8 is closed, the winding of the motor 24 of the engine 1 is fed from the source 6 now, and the winding of the motor core 2 from the source 5. The current in the motor windings changes direction and the motor is reversed. Thus, the energy sources are used in both directions of rotation of all engines. A lock may be provided in the circuit, which excludes the possibility of simultaneously closing both keys. The reversing electric drive circuit can be performed with the motors switched to the dynamic braking mode after they are turned off if the fixed contacts 11 and 12 of the keys 7 and 8 are connected to each other (Fig. 2). In this case, when moving the keys 7 and 8 to the upper position, the engines will switch to the dynamic braking mode. In this case, the braking current flows through the following circuits: for the engine 1 — winding the engine core 1, closed switches 7 L, winding the engine core 1; for Engine 2 - motor core winding 2, power source 5, closed switches 7 and 8, power source 6 and motor core winding

2. Thus, ensuring maximum ease of engine control, the device allows to increase the degree of uniformity of energy utilization of power sources. Claim 1. Multi-motor reversible electric drive containing two DC electric motors connected via a contactor to two power sources, characterized in that, in order to increase the efficiency of using power sources, the root winding of one electric motor is connected between the same terminals of different power sources, the root winding of the second electric motor is between the other like clips of the indicated power sources, and the contactor is made on two keys, each of toryh included between oppositely clips power sources.