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Electric drive for airfield equipment
Different ground support equipment is used at civilian and military airfields: tractors, fuel trucks, mobile hydraulic units, lifting equipment, and sweepers/plows. As a rule, this equipment is built on the chassis of internal combustion engine vehicles. This leads to a number of difficulties:
- Equipment operating in hangars emits exhaust gases. This incurs additional costs for facility ventilation systems.
- Regular supply of gasoline and diesel fuel is a problem at classified or hard-to-reach airfields.
- The presence of people in aircraft parking areas can be unsafe, and internal combustion engine vehicles cannot operate without an onboard operator.
The RUBRUKS-developed electric traction drive system is a universal solution that allows for the conversion of airport equipment to electric traction and resolves these issues.
System structure:
01
Electric drive
built on a high-voltage network with a DC voltage of 360 V. The bridge drive is RUBRUKS MVM-PM1-60 electric motor with a reducer. The electric motor is controlled by traction inverter RUBRUKS NTPI-600-130.
02
Electric motor
is powered by two connected in parallel RUBRUKS HVB-360-50 battery modules. Energy reserves can be increased by installing additional batteries. The operating temperature of the batteries is maintained by thermoregulation block.
03
DC-DC converter
DC-DC converter RUBRUKS converts 360 V to 24 V to power the low-voltage onboard electrical system. The 24 V low-voltage battery is used to maintain power for lighting and indicators.
04
hydroelectric power station
The RUBRUKS MVM-PM1-15 electric motor-driven hydraulic power unit with a RUBRUKS NTPI-600-20 inverter allows any hydraulic attachment for airport operations to be installed on the machine.
05
Liquid heater
A liquid heater powered by the high-voltage network is included in the system to heat the cabin.
06
Charger
RUBRUKS RBC2-360-22 On-board Charger It is used for charging battery modules from 1- and 3-phase mains power.
07
Switching unit
The high-voltage consumers listed above are connected at a single point using High-voltage switching unit RUBRUKS with an insulation monitoring system.
08
CAN logger
RUBRUKS CL3-2C CAN logger with the remote diagnostics module, it records system operation data from the CAN bus and allows for diagnostics and statistical data collection.
Advantages:
- When operating in enclosed hangars, electric-powered equipment does not emit exhaust fumes and operates silently. This helps to improve working conditions for personnel and reduce hangar ventilation system costs.
- Electric vehicles do not require refueling. Therefore, for the operation of airfield equipment, only connecting the airfield infrastructure to the power grid is needed. The need for constant delivery of several types of fuel disappears.
- An operator is not required on board to control the machine. The system provides for the installation of a radio channel for remote control of the equipment.
- The cost of owning electric-powered airfield equipment is lower compared to internal combustion engine equipment.
Let's consider the cost savings using a self-propelled passenger boarding stair as an example.
with internal combustion engine and electric self-propelled gangway
| Internal combustion engine | Electric drive | ||||
|---|---|---|---|---|---|
| Average fuel consumption | L/h | 4,80 | Average energy consumption | kW | 17 |
| Work shift duration | ч | 8 | Work shift duration | ч | 8 |
| Total fuel consumption | l/day | 38,40 | Total energy consumption | kWh/day | 136 |
| Fuel cost | rub/l | 57 | Cost of electricity | rub/kWh | 5 |
| Total fuel cost | rub/day | 2 188,80 | Total cost of electricity | rub/day | 680 |
| Saving | rub/day | 1 508,80 | |||
| Saving | RUB/year | 497 904 | |||
| Price of a self-propelled airstair | ruble | 10 000 000 | Price of a self-propelled airstair | ruble | 13 000 000 |
| Price difference | ruble | -3 000 000 | Price difference | ruble | 3 000 000 |
| Payback | days | 1 988,34 | |||
| Operating standard | days/year | 330 | Operating standard | days/year | 330 |
| Payback | summer | 6,03 | |||
| Service life | summer | 8 | Service life | summer | 8 |
| Cost of ownership | ruble | 15 778 432 | Cost of ownership | ruble | 14 795 200 |
| Total cost of ownership savings | ruble | 983 232 | |||
| Total cost of ownership savings | % | 6% |
Our company produces components for building traction drive systems, and also develops systems from scratch.
The catalog features electric motors, battery modules, power electronics, and integrated solutions are presented, on the basis of which electric aerodrome equipment can be designed.
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