RU2795502C1 - Device for combined autonomous power supply of an unmanned aerial vehicle - Google Patents

Abstract

FIELD: electrical engineering.

SUBSTANCE: invention can be used to power an unmanned aerial vehicle from various autonomous power supply modules operating separately, not electrically connected to constant and impulse loads. The device for the combined autonomous power supply of an unmanned aerial vehicle contains a battery and a molecular energy storage device with common distribution power buses for supplying consumers with different loads (autonomous power supply module), while two autonomous power supply modules are introduced with separate distribution buses for various consumers that are not electrically interconnected, and the power supply is carried out separately for both consumers of a constant mode of operation, and consumers of a pulsed mode of operation from different power supply modules.

EFFECT: increasing the duration of autonomous power supply under pulsed load and increasing the reliability of power supply to responsible consumers of direct and pulsed currents.

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Description

The invention relates to electrical engineering and can be used as part of an unmanned aerial vehicle (UAV) for its power supply from autonomous separate power supply units in constant and pulsed load modes.

A device for guaranteed power supply of low-voltage high-current DC consumers with automatic switching on of a high-speed reserve is known, containing a network converter and a backup power supply system from a battery (AB) and a molecular energy storage device (MNE) connected to common distribution buses [1].

The disadvantages of such a device are its low reliability due to the presence of common distribution buses that supply consumers with constant and pulsed loads operating from a common battery, reducing its energy resource when the pulsed load is turned on and, as a result, the duration of the autonomous operation of the UAV.

Closest to the proposed device is the uninterruptible power supply module for DC consumers [2], which contains a network converter and MNE, connected via isolation diodes to the uninterruptible DC power supply buses, and supplies consumers in constant and pulsed load modes.

The disadvantage of this uninterruptible power supply module for DC consumers is the presence of common distribution buses and the lack of the possibility of independent operation of the battery in a pulsed mode, which also reduces the duration of the autonomous operation of the UAV.

Thus, the considered devices [1, 2] provide for uninterrupted and reliable operation of critical DC consumers and do not provide reliable power supply to pulse mode consumers.

The aim of the invention is to expand the capabilities of the autonomous power supply system for an unmanned aerial vehicle from various autonomous sources of different capacities, to reduce the level of voltage ripple in the autonomous power supply network under pulsed load and to increase the reliability of power supply to responsible DC consumers, which allows increasing the energy resource of various consumers and the duration of the UAV in flight .

This goal is achieved by the fact that the UAV combined autonomous power supply device contains two electrically isolated blocks, including a battery, a molecular energy storage device and buses of various consumers, while the operation is carried out in two modes of operation, in which separate autonomous power supply blocks with separate buses for different consumers, namely the power supply of UAV consumers in a constant mode and the power supply of UAV consumers in a pulsed mode.

Comparative analysis with the prototype shows that the claimed device is characterized by the presence of two different autonomous power supply units with separate consumer buses, electrically unconnected and supplying separate consumers of constant load and impulse.

The essence of the invention is illustrated by the drawing, namely in Fig. 1 shows a block diagram of the UAV combined autonomous power supply device, where 1, 7 - battery; 2, 8 - guaranteed power bus; 3 - direct current consumer; 4 - inverter; 5 - AC consumer; 6, 10 - molecular energy storage; 9 - consumer direct current pulsed mode; 11 - block of the UAV power supply system of constant operation (a); 12 - block of the UAV power supply system of the pulsed mode of operation (b).

The device works as follows.

In preparation for the flight of the UAV, blocks of independent power supplies 11, 12 are switched on. During the flight of the UAV, the constant load unit 11 and the inverter 4 operate constantly. When the need arises, for example, when photographing objects appear, the power supply to consumers of direct current of a pulsed mode 9 is carried out from the second block of the power supply system 12 electrically not connected to the first block 11. This mode of operation allows you to save the energy resource of the impulse load unit and increase the duration of the autonomous operation of two groups of UAV consumers .

Information sources

1. RU, 2143774, 1999.

2. RU, 2491696, 2019.

Claims (1)

A device for a combined autonomous power supply of an unmanned aerial vehicle, containing a constant load unit, including a battery and a molecular energy storage device with a common distribution bus, characterized in that a variable load unit is introduced, including a second battery and a second molecular energy storage device with a common distribution bus, electrically isolated from the constant load unit, while one output of the constant load unit is connected to AC consumers through the inverter, the second - to DC consumers, and the output of the variable load unit is connected to DC consumers in a pulsed mode.

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