Speed Control for Turbine-Generator of ORC Power Generation System and Experimental Implementation

Autor: Jang-Mok Kim, Bum-Seog Choi, Hyung-Seok Park, Hong-Jun Heo, Kyung Chun Kim
Rok vydání: 2019
Předmět:
Zdroj: Energies; Volume 12; Issue 2; Pages: 200
ISSN: 1996-1073
DOI: 10.3390/en12020200
Popis: This paper presents a rotation speed estimation and an indirect speed control method for a turbine-generator in a grid-connected 3-phase electrical power conversion system of an organic Rankine cycle (ORC) generation system. In addition to the general configuration mechanism and control techniques that are required in the grid-connected ORC power generation system, the indirect speed control method using the grid-side electric power control and the speed estimation method is proposed for the proper speed control of turbine-generators. The speed estimation method utilizes a digital phase-locked loop (PLL) method that uses a state observer to detect the positive-sequence voltages. A 10 kW system where a Motor-Generator set is used as a turbine simulator and a 23 kW actual system for the grid-connected ORC power generation were designed and manufactured, respectively. This paper includes various experimental results obtained from field tests conducted on actual installed ORC systems.
Databáze: OpenAIRE
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