In the European Recommendation COM (2007) 551 final, we find that, in the European Union, over 60% of the population lives in urban areas. Urban areas now constitute the living environment of the majority of the population and increased traffic in town and city centers has resulted in chronic congestion. Every year nearly 100 billion Euros, or 1% of the EU's GDP, are lost to the European economy as a result of this phenomenon.The analysis of the means of transport presented here will show which electrical vehicle is the solution for non-polluting transport according to each specific need.ICPE SAERP, together with RAT Bucharest, has modernized classic tramcars, equipping them with three-phase inverters and asynchronous motors and a partially lowered floor. By 2011, 18 tramcars will be modernized.ICPE SAERP, together with ASTRA BUS Arad, produce and deliver in Bucharest new trolleybuses with lowered floors, equipped with three-phase inverters, with asynchronous motors and with converters for the auxiliary services and for the air conditioning system. Also the trolleybus has a protection device against high voltage present on the body of the vehicle, which is controlled by means of a DSP processor in the master controller.The methodology used in our research is presented in this paper and the results that led us to the conclusions that the type of public transportation proposed is cleaner, more reliable, more efficient and more comfortable than others.
The company ICPE SAERP S.A. is the main producer of the electric drives for urban traction and for railway vehicles in Romania. The products of our company are subject to the last 57 years of permanent evolution, based on the development of the semiconductor and of the microprocessor control techniques. The improvement of the passenger's comfort and the downsizing of the exploitation costs are a must for public transportation companies, relating to trolleybuses and trams. Both can be achieved by using modern electric drives (dc-choppers or 3-phase inverters), which can reduce the power consumption and can increase the control of the vehicle. The main products for electric traction are the drives for traction motors of the vehicles (as DC-choppers for DC series motors and 3-phase inverters for asynchronous or synchronous motors) and converters for auxiliary services of the vehicles (battery chargers and 3-phase inverters for auxiliary asynchronous motors). This paper represents a review of those applications and their benefits.
The development of the great cities in Romania, especially of the capital, Bucharest, and the exaggerated increase of the number of cars, mostly used cars from Western Europe, have contributed to the pollution of these cities and resulted in a horrific urban traffic, particularly during the morning and evening rush hours. This paper will examine the decision factors and the planning concerns to provide better conditions for urban transport in Bucharest and in the other great cities in Romania, especially with regard to urban electrical vehicles. Although the fleet of urban transport vehicles is based on electrical vehicles, because of the traffic jam during rush hours, satisfaction of passengers is low, with the exception of the light-rail and metro passengers. This makes more people use their personal car when they go to work or shopping (even single occupancy), resulting in terrible traffic. This was the reason light-rail transportation was developed in Bucharest and in major cities of Romania. In order to encourage the usage of the urban transportation means, especially electrical ones, we have proposed some measures to improve the comfort provided by the urban public transport vehicles. The company ICPE SAERP Bucharest, specialized in the production of electrical traction drives and auxiliary converters, is developing and continuously improving the equipment and services concerning auxiliary services equipment, converters for air conditioning systems, access to traffic information, transport quality, unified fares for surface transportation (trams, trolleybuses and buses) and underground transportation, easy access vehicles, safety, security and cleanliness.
The development of the large cities in Romania, especially of the capital, Bucharest, and the exaggerated increase of the number of cars, mostly used cars from Western Europe with a long mileage, has contributed to the pollution of these cities and resulted in a horrific urban traffic, particularly during the morning and the evening rush hours.To provide this kind of transportation in Bucharest and the surrounding areas, RATB uses 300 km of tram lines with a park of 500 tram wagons, 18 trolley lines with a 485 km network and a park of 300 trolleys, the bus transport system with a 2900 km network and a park of 1300 buses, 3 Light Rail (LR) lines and 4 subway lines.. This paper will examine the decision factors and the planning concerns to provide better conditions for urban transport in Bucharest and in the other large cities in Romania, especially with urban electrical vehicles.Although the fleet of urban transport vehicles is based on electrical vehicles, because of the traffic jams during the rush hour, the satisfaction of the passengers is low (except for the light-rail and metro passengers). A lot of car owners are using car transport (even single occupancy) to the work place and shopping areas, resulting in terrible traffic. This is the reason why the light-rail transportation was developed in Bucharest and in major cities in Romania, as presented before.In order to encourage the use of the urban transportation means (especially the electrical ones), we have proposed some measures to improve the comfort provided by urban public transport vehicles. The company ICPE SAERP Bucharest, that specializes in the production of electrical traction drives and auxiliary converters, is developing and continuously improving the equipment and services concerning: auxiliary services equipment, climate converters for air conditioning systems, access to traffic information, quality of transport, the GPS position of the vehicle, easy payment of the transport fare, a common card for the surface transport (trams, trolleybuses and buses) and underground transport, easy access to vehicles, safety, security and cleanliness.
The company ICPE SAERP S.A. is the main producer of electric drives for urban traction and for railway vehicles in Romania. The products of our company are subject to the last 48 years of permanent evolution, based on the semiconductor's development and of the microprocessors control techniques. The improvement of the passenger's comfort and the downsizing of the exploitation costs is a must for public transportation companies, relating to trolleybuses and trams. Both can be achieved by using modern electric drives (DC choppers or three-phase inverters), which can reduce power consumption and increase control of the vehicle. The main products for electric traction are: drives for traction motors of the vehicles (DC choppers for DC series motors and three-phase inverters for asynchronous and for synchronous motors) and converters for auxiliary services of the vehicles with two development directions, battery chargers (DC converters) for drive supply (24Vdc or 110Vdc) and threephase inverters for auxiliary asynchronous motors (steering, compressor). ICPE SAERP SA has delivered 310 pcs. traction equipment with DC chopper with GTO thyristors or IGBT transistors that equip the trolleybuses from Astrabus srl Arad for the final customers RAT Bucharest, Transurb Galaţi and Ratuc ClujNapoca. This paper presents driving equipment with three-phase inverters for asynchronous motors for trolleys and trams that ICPE SAERP has delivered in the past three years. The paper also presents the equipment's performances, the analysed principle for electrical power diagrams.
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