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  Digital Catalogue for Technology and Products Development


   Technology and Product Development

    Basic Information

Technology developed: Auxiliary Converter for Railway rolling stock applications (TP19768454466)
Category: Technology Service/Know how
Details of Inventor(s):
Inventor Institution/Organization/Company Department Designation
Jinuraj K G CDAC THIRUVANANTHAPURAM PEG SCIENTIST E
Technical Application Area: Transportation
If 'Other', please specify:
Please give more details of new technical application area:
Universal Auxiliary Converters are used in the railway traction rolling stocks viz.locomotives, EMUs etc. to provide three phase supply to various auxiliary motors that feed different types of loads such as reciprocating compressors, centrifugal blowers and centrifugal pumps etc. and also to onboard battery charger. It was designed and developed to replace the existing converter in various rolling stocks which differ in terms of the input supply system, rated capacity, volume occupied, cooling arrangement, interface with the locomotive control circuit, method of control etc. Apart from the technical features, the main objective of using this common auxiliary converter in place of existing converter is to lessen the difficulty in item procurement, inventory management and maintenance.
Organization(s):
Centre for Development of Advanced Computing (CDAC) Pune
Affiliated Ministry: MeitY, Govt. of India
Type of technology development: Indigenous
Does the technology help in replacing any import items currently
procured from outside India?
Yes
Does the technology have export potential? Yes
Category of Technology developed: Immediate Deployment
Stage of Development: Field Test
Please describe in detail including the TRL Level:
TRL Level 6. As per the MoU CDAC had to design and develop a total of 7 proto models in span of two phases, out of which 6 nos. to be supplied to the CLW, West Bengal ,Indian Railway is the end user. In phase I, CDAC developed two proto models of Universal Auxiliary Converter out of which first proto model was kept in CDAC Lab for future upgradation and the second one was sent to CLW. CDAC had conducted the load test on the second proto model at CLW site by connecting actual source and loads of the locomotive. After this, 5 more proto models with varying module structure were developed after incorporating several electrical and mechanical changes as specified by the Railways. These units were also sent to CLW and conducted preliminary level testing at their site. Due to lack of testing facility at CLW, all proto models were shifted to Kazipet locoshed in Thelungana. CDAC has conducted functionality testing on three proto models at the loco shed. Finally, two proto models were installed in Conventional class of Locomotive and tested with actual load and source till 30 percentage. Railway officials at Kazipet insisted to develop a new add on module to integrate into the Converter unit for interfacing with the Conventional Locomotive. CDAC developed and tested this module and installed it in one of the proto models.

    Abstract:

Applications: The universal auxiliary converter, which meets the all the normative standards which are essential for equipment onboard rail vehicles, are suitable for all the types of electric locomotives and EMUs, either the new builds or retro fitment. It can be interfaced universally since it meets different input supplies, cooling requirement, mechanical interface as well as load requirements needed in different types of rolling stock. This technology can also be used in place of existing Arno converter which is used in some type of locomotives to convert single phase AC to three phase AC. In future, if a particular class of locomotive requires more power rating, then more number of similar converter units can be used as a scalable configuration. Presently, the technology is used to converter single phase AC to three phase AC to feed auxiliary equipments, the same technology with required power enhancement can be implemented for the main converter also, that is used for the propulsion.
Advantages: Universal design with wide input voltage variation for different locomotive In compliance with IEC standards for Rolling Stock Application Input power factor near unity Input current THD less than 10% Output voltage regulation of less than +/- 5% Output voltage THD less than 10% IGBT based power stack for front end converter and inverter IPM based power stack for battery charger Interface with Vehicle Control Unit through fibre optic CAN Other handshaking signal interface through potential free contacts LCD display fault log using lap top through USB port Isolated control cubicle meets electromagnetic compatibility Effective power management during Panto-bouncing as well as thermal overloading of devices Converter can be used as a scalable configuration

    Technology Inputs:

Imported Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
NA
Indigenous Equipment/Spare Parts:
Equipment/Spare Parts Year ITC-HS Code
NA
Imported Raw Materials:
Raw Materials Year ITC-HS Code
NA
Indigenous Raw Materials:
Raw Materials Year ITC-HS Code
NA
Existing R&D Facilities used:
Facilities Year ITC-HS Code
TECHNOLOGY TRANSFER CENTRE FACILITIES OF CDAC THIRUVANANTHAPURAM USED FOR TESTI 2016-17

    R&D Investment:

R&D investment (Rs. in Lakhs):                    
Indian Source (Rs.) Foreign Source (Rs.) Year
220 0 2014-15

   Patents & Publications:

Patents:
Filed Patents (No.) Granted Patents (No.) Year
0 0 NA
Publications:
Submitted (No.) Published (No.) Year
0 0 NA

    Commercialization Potential:

Who are the Potential Licensees? ELECTRICAL EQUIPMENT MANUFACTURING PSUS LIKE BHEL , PRIVATE SECTOR ELECTRICAL EQUIPMENT MANUFACTURING COMPANIES LIKE ABB, AAL , HIRECT ETC.
What commercially available products address
the same problem?
Company Product Problem Addressed
ABB AUXILLARY CONVERTER AUXILLARY CONVERTER
Would you like to develop this invention further with
corporate research support?
Yes
Would you be interested in participating in cluster based
programs for commercialization research or business
planning for your invention?
Yes
      Submitted by: Rajasree S Date of Submission: 4-8-2020



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