DIRECT-DRIVE WIND POWER GENERATOR SYSTEM BASED ON INTERLEAVED BOOST CONVERTER
IntroductionAs the development of the wind power generator system, the capacitor of each generator is becoming bigger and bigger. New technologies, materials and techniques are applied in wind power generator more and more1-6. The gearbox is easy to be attainted because of overload in nowadays MW wind power generator system. Accordingly, direct-drive wind power generator system is brought forward, in which no gearbox is needed. So the oil-leak problem is avoided and no noisy eliminator need to be installed. These advantages can also reduce the insurance cost, lengthen the longevity of the generator and decrease the cost of operation and maintenance.Direct-drive variable speed constant frequency (VSCF) wind power generator system is a ideal topology. It can enable the wind turbine to run in a very wide speed range and it also leaves out the gearbox, which is used to make the rotational speed higher. The result is that the efficiency and the reliability are improved. At the same time, the maintenance cost and the direct cost are also reduced7-8. In general, PM synchronous machine (PMSM) is adopted in direct-drive wind power generator system. The three phase electricity from the PMSM is then rectified by a diode rectifier. After that a three-phase converter is fixed to transform the voltage from DC to AC and then the converter can be connected to the grid. Because the output voltage of PMSM is low when the wind speed is not high enough and the energy cant be sent to the grid, a boost circuit is need to heighten the DC voltage, especially at low wind speed.
Li Jian-lin Hu Shu-ju Zhu Ying Xu Hong-hua
Institute of Electrical Engineering Chinese Academy of Sciences Beijing, China
国际会议
The 7th China-Korea Workshop on Clean Energy Technology(第七届中韩清洁能源技术研讨会)
太原
英文
303-304
2008-06-25（万方平台首次上网日期，不代表论文的发表时间）