Energy conversion system

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Lesley Dorsey
6 years ago
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2 Energy conversion system Double fed AFE and inverter system allows to control the generator in the best way. In this electronic system the DC bus created by the AFE recovers the rotoric power of the generator directly to the grid and the regulation of the inverter allows to control the hydraulic turbine at any speed, in every working phase.

4 TDEMACNO offers the power components: - AFE (Active Front End drive) - Soft start resistors - EMC filters - LCL clean power filters for THD < 3% - INVERTER - Inductance (generator side)

8 Input main and LCL filter AFE: 2 Stack Chopper brake For emergency Inverter: 2 Stack

9 Control of rotating generators Thanks to TDEMACNO s know how and expertise in the control of electric motors in industrial applications, we can control any type of generators with or without speed sensor: - Direct drive permanent magnet synchron generators up to 160 poles; - Traditional or vector controlled asynchronous generators - Hybrid reluctance generators To increase the performances we developed a new application software: STARTER/BY PASS that allows to disconnect the generators from the elctronic part during the working mode at normal speed 50Hz and to connect the generator directly in parallel to the grid, reducing in this way the losses at 50Hz and minimising the peak current in the start up phase.

10 Control of rotating machines - Speed and torque control of the generator. - Flying restart of the rotating machine. - Function STARTER/BY PASS both in the asynchronous and in the synchronous as well and viceversa: back to the inverter control - Automatic Cosphi rephasing with the AFE in run mode without the use of capacitor banks. - Management of the exceeding energy and of the plant out of control, thanks to electronic circuits and dissipative braking resistors. - Control of rotating machines in sensorless FOC and defluxing modality

12 In case of power failure In case of power failure TDEMACNO solution allows to switch from the main power supply line to dissipative resistors, when forseen by the customers, to brake the generator and the hydraulic turbine through a mechanic brake mounted on the fly-wheel; in this way you can avoid the not controlled overspeed of the turbine and possible mechanical and electrical failures. If there are no resistors, the AFE detects the power failure and through some alarm signals grants the opening of the contactor between the generator and the inverter.

13 Easy and fast The info exchange between the PLC, the installation control and the inverter can be sent via Profibus, EtherNET or Modbus RTU. Diagnosys and PC configuration connections are also possible through the local or remote keypad (optional). Thanks to OPDexplorer, the monitor and supervision software of the drives, all the parameters and electric values are always controlled. Via teamviewer (internet connection) it is also possible to do remote control.

14 1. San Martino sul Sile installation: 36 poles, 250kW torque sensorless generator directed connected to Kaplan turbine 2. La Thuille Aosta installation: 90kW asynchronous generator 3. Giavera del Montello installation: 45kW asynchronous generator 4. Montebelluna installation: 132kW asynchronous generator 5. Sestola installation: 2 x 200kW asynchronous generators with by-pass function 6. Prato installation: 2 x 110kW asynchronous generators with by-pass function 7. Novara installation: 2 x 75kW asynchronous generators with by-pass function 8. Monfalcone installation: 3 x 37kW asynchronous generators with bypass function

15 9. Ceretto Lomellina installation: 2 x 250kW asynchronous generators with by-pass function 10. Olevano Lomellina installation: 132kW asynchronous generator 11. Ameduna installation: 2 x 132kW permanent magnet generator 12. Pislengo installation: 2 x 75kW asynchronous generators with by-pass function 13. Danesa installation: 2 x 55kW synchronous generators with by-pass function 14. Senigallia installation: 1 x 45kW, 1 x 75kW, 1 x 110kW asynchronous generators with by-pass function 15. Casa Nuova installation: 132kW synchronous generator 16. Lavandara installation: 132kW synchronous generator 17. Piora installation: 110kW synchronous generator

16 11. Fontana Ospedale installation: 132kW synchronous generator 12. ORL: 110kW synchronous generator 13. Volpago: 37kW asynchronous generator 14. Cartara: 110kW synchronous generator 15. Ponte della Mudda: 110kW synchronous generator 16. Camino Vaiano: 110kW synchronous generator 17. Follina: 90A 18. Castelnovetto: 75kW asynchronous generator

a big advantage against all our main competitors like KEB, ABB, CT,

17 In Italy TDEMACNO is the first company to propose a solution for water turbine according to CEI 021 (mandatory in Italy from January 2013) This is a big advantage against all our main competitors like KEB, ABB, CT, Schneider and so on. Enel machines with EcoBulb with mp motor rephase; The 4MW Turbine

19 THANK YOU FOR YOUR KIND ATTENTION

Variable Frequency Drive NEW! Moving your Control. Forward VFD from Unitronics kW Single Phase kW Three Phase

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