Sensorless stand alone variable speed system for distributed generation
- Grzegorz Iwański,
- Włodzimierz Koczara
The following paper presents a variable speed stand alone power generating system. The system consists of a double fed induction machine and power electronic converter connected to the rotor. A topology and a control system allow for stand alone operation. An external power source was used for preliminary excitation. After that, the system can operate autonomously and take excitation power from the stator. The control system is based on stator voltage space vector referred to rotating frame. The speed of the rotating frame responds to stator frequency. The system is controlled by rotor current which amplitude is adjusted by controller of the stator voltage component related to x axes, whereas the rotor current frequency is controlled by stator voltage component related to y axes. In this way the stator output voltage frequency is speed independent and the control system operates without any mechanical sensor. For design a simulation program PSIM with DLL files is applied. The results of controllers calculation in a wide speed range are presented. A laboratory system was built and tested. As a controller a DSP SHARC trade; system with support ALTERA trade;/ FPGA is used. The results of the laboratory tests present the generating system in transients when a step load is applied.
- Record ID
- 1915-1921 Vol.3
- Power Electronics Specialists Conference, 2004. PESC 04. 2004 IEEE 35th Annual, vol. 3, 2004
- Keywords in English
- ALTERA, asynchronous generators, controller, control system, digital control, digital signal processing chips, distributed generation, distributed power generation, DLL files, double fed induction machine, DSP SHARC system, electric machine analysis computing, external power source, field programmable gate arrays, FPGA, laboratory system, machine control, power control, power convertors, power electronic converter, PSIM, rotating frame, rotor current, rotors, simulation program, stators, stator voltage space vector, transient, variable speed stand alone power generating system
- DOI:10.1109/PESC.2004.1355410 Opening in a new tab
- Score (nominal)
- Publication indicators
- = 19; = 34; = 37.0
- Citation count
- Uniform Resource Identifier
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