The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
This paper proposes an improved discontinuous PWM (DPWM) method in a grid-connected inverter system. When the conventional 60° DPWM is used in the switching method, the output voltage of the inverter has many harmonics compared to the continuous PWM (CPWM) switching method. In large-scale system, a LCL-filter cannot sufficiency reduce the harmonics of the inverter output voltage. If these harmonics...
This paper proposes a design scheme for an LCL-filter used for three-parallel operation in 2MW-wind turbines. An appropriate design method of the delta configured LCL-filter is also proposed to improve the output power quality in the system. A novel design method for the inner inductance of the LCL-filter is proposed in order to overcome the existing trial and error methods used in designing a filter...
This paper proposes a gain scheduling method that improves stability of a grid-connected inverter system by estimating a grid impedance. The grid impedance is estimated through a method of the periodical variation of active and reactive powers (PQ variations). Inverters adopted in distributed power generation system (DPGS) are often connected to the grid through an LCL-filter. An LCL-filter can reduce...
A power conversion system in a wind turbine using a Permanent Magnet Synchronous Generator (PMSG) is directly connected between a generator and a grid. The capacity of power semiconductor switches and filters should be selected regarding the overall system rating and the output power quality. The use of an LCL-filter and n-parallel power conversion devices can be the best solution for these problems...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.