OTHER SIGNIFICANT REFERENCES

1.  Expertise of the problem of bearings failures caused with shaft currents at Crack–Gas Compressor,
Petrohemija Pančevo, 2001.

Voltage and current measurements at Crack-gas compressor were performed in order to investigate the cause of shaft currents phenomenon and bearing failures, which are the consequences of these currents. On the base of results and driven conclusions, the approach to solve the problem and to prevent further bearings failures is given. Photos.

2. Module for remote control of speed reference in explosive environment
„DUGA” Belgrade, 2001.

Module for remote control of reference with two push buttons in the case of reference control in explosive environment, when a converter for drive supply is outside the environment.

3. Rectifiers for forklifts battery charging,
     Board factory „UMKA”, 2000-2001.

Six different rectifiers have been made (for different types of forklifts) for battery charging in accordance with IUU characteristic, with output voltage 48V and currents in the range between 50 and 80A.Photos.

4. Drives reconstruction of machines-tool in the Motor factory „DMB”, Rakovica, 1998 2000.

A great number of drives and control systems on machines-tool in the Factory have been reconstructed during this period of time.

5. „Universal control system for thyristor rectifiers (UUSTI) - PROTOTYPE”,

Ministry for science and technology of Republic Serbia, Innovation project I.1.1202, for the time period from April 96. till April 97.

6. Reconstruction of the rolling mill station drive in Hot rolling mill „SARTID”, Smederevo, 1995.

Report about the reconstruction and commissioning. A required report is completed and commissioning of the first rolling mill station, which consists of two DC motors of 4,5MW each, and adequate thyristor rectifier is performed.

7.  Rectifiers with small ripple of the output voltage, Faculty of Electrical Engineering, University of Belgrade, 1989 – 1990.

Project, supervision and commissioning. A series of 7 rectifiers, which have very small ripple of the output voltage, is made for requirements of Faculty of Electrical Engineering in Belgrade. These rectifiers are constructed to provide supplying of consumers with the same quality, as they have, when the voltage supply is from accumulator batteries. Rectifiers power are from 2,5kW to 25kW, voltages from 50 to 250V. Photos.

8. Drive reconstruction in the Steel mill „SARTID”, Smederevo, 1982-1989.

During this period of time, reconstructions of different amount have been performed on Steel mill drives, on the mixer drive, all controlled drives in the converter’s plant, and continuous-casting plant drive.