Contact
RAIL ELECTRONICS CZ s.r.o., | IČ: 25248375 | DIČ: CZ25248375 | Phone: +420 353 176 471 | E-mail:
Headquarters | RAIL ELECTRONICS CZ s.r.o., U Nemocnice 1428,363 01 Ostrov (GPS: 50.3121762,12.9550182)
Ing. Karel Pintr
T: +420 353 176 472
E:
Ing. Robert Musil
T: +420 353 176 473
E:
Ing. Stanislav Koucký
T: +420 353 176 474
E:
Michaela Tvrdá
T: +420 353 176 471
E:
Jaroslav Hála
T: +420 730 138 799, +420 739 043 969
E:
Electromobility
Wide variety of electrical traction drives according to customer requirements. We can deliver traction equipment complete solution. It contains main inverter which can by powered from trolley or acummulators, inverters for hydraulic motors and for example insulation meters.
For electrobuses we produce traction inverter which provides motor control and traction accumulator charging. Main part is frequency inverter for various motor powers (for example. 120kW, 160kW, ...). Energy is drawn from traction accumulator with recuperation energy back while braking.
Inverter also contains parts required for charing traction battery (for example Li-Ion). For charging it is only required to connect 3x400 Vac to vehicle. This solution makes total cost of vehicle considerably cheaper, because it's not necessary to invest in charging stands. It is possible to use "night" or "fast" electrobus charging. Both has own pros. Night charging has lower power (thermal) losses, but on other side fast charging allows use driver's pause to significantly increase vehicle range.
Container also holds inverters for compressor, fans, air-conditioner and DC/DC inverter for 24Vdc battery charging. To keep dimension of container low it's ised water for coolling.
We produce traction inverter which provides motor control and traction accumulator charging also for vans. Main part is frequency inverter for various motor powers (for example. 50kW, 100kW, ...). Water cooling is used to ensure small dimensions and weight.
This concept is especially suited to city traffic, where there are fruequent starts and braking. So inverter can recuperate kinetic energy back to batteries.
The casing also contains auxilary inverters required for charing onboard 12V battery and air-conditioner.
The basic charing method is "night charging" by low current (for example. 16A). By this method is battery charged with low losses - battery is not self heating. It is also possible to use fast charging (up to 100A, or specified by customer). This is usefull for vehicle range extending at drivers pause or when alternating drivers.
The control electronics provides vector motor control while driving. And it's microprocessors ensures full charing of all battery cells (balancing).
We also produce electric drive for excavators and for various other contruction equipment. Electric motor actuates hydraulic pump as well as standard combustion engines. Same electronics ensures current regulation at working and while charging.
Entire power inverter is as small as it fits into the size of original fuel tank of volume about 3L. At the same time, this drive can recharge batteries within 30 minutes pause by current about 100A. Of cource it is possible to use slow charging to improve charging effectivity and prolong battery life.
Trolleybuses
We offer complete solutions for electric trolleybus drive. Including short distance drive on traction battery. We offer different main drive variants for vehicles of various sizes, powers or motor count. We also supply inverters for auxilary motors like compressor, air-conditioner.
Drives are manufactured in different range of powers, depending on the customer requirements.
Advantages:
- High effectivity 98,6%
- Wide operating voltage 0-1000V allows drive only with limited dynamic performance at sections with reduced trolley voltage. For example, in a car wash.
- Combined inverter for more electric motors on one vehicle.
We also offer the possibility of reconstruction the existing chassis with new technology with following advantages:
- Better effectivity
- Lower running costs
- Lower maintenance requirements
- Smaller dimensions
- Much smaller electromagnetic interference
- Modern diagnostic options
- Poorly accessible parts replaced
- Higher reliability
In our offer we have also units to collectors control. The unit evaluates the collectors state by sensors placed directly on levers. Furthermore it receives information about the vehicle condition via CAN bus or digital (+24V) inputs. Subsequenly, on the basis of desired behavior and the current collectors state is its position adjusted directly through air levers, which act directly on the levers.
There is a few examples which can be automated:
- Lowering on jump out from trolley
- Trolley connection under the "roofs"
- Collectors disentanglement
- Loweting into hooks on driver request
We develop and produce wide range testers of hazardous voltage. Our devices allows to measure dangerous voltage or deterioration of the insulating state in various vehicle parts. These devices can be used not only on trolleybuses.
(The tester immediately signalls of a possible breach of insulation condition. And acoustically with delay.)
In these days we produce following testers:
- Chassis voltage tester
- Ground connection tester
- AC voltage ground connection
- Second insulation state meter
- Chasis voltage indicator
Trams
For rail vehicles, e.g. trams, we produce the control part of the traction drive. An example is a multi-cell vehicle, operated by DP Brno, with six traction motors.
Chargers/inverters
Automatic fast electrobus charging stand. Serves to extend vehicle range in a short time - for example, while waiting at mandatory driver break. Within 15 minutes it can extend vehicle range by 40%.
Driver assistance at charging is not required. It is enought to stop by the guidance screen in cabin. Then device connects to vehicle and charging is started.
Universal device used to charge traction batteries or tempering when temperature drops below +5°C. The charger is used for the safe electrical power delivery to vehicle. Monitors vehicles ground connection with power system. Own regulation of charging or tempering ensures vehicles control unit.
The charger also provides energy consumption monitoring. Input voltage is three-phase 3x400Vac and maximum charging current is 32A.
As a charging traction batterie we also offer separate part of drive - traction battery charger. The charger delivers regulated current 0-30Adc into battery even while drive. The power source is either overhead trolley network or other source - for example 3x400Vac network.
This charger allows to add batteries on trolleybus with minimal changes and investments. To the existing drive system it is possible to add our battery charger. This will allow to serve the route outside trolley or roll into parking lot without trolley.
Inverter input and output are galvanically insolated. High frequency allows the use of transformers and reactors of relatively small dimensions and weight.