Abstract
The brushless doubly fed generator (BDFG) has a good application prospect in the fields of ship shaft power generation and wind power generation due to its simple structure, safety, and reliability. In previous studies, the brushless doubly fed machine (BDFM) is all based on additive modulation and whose natural synchronous speed is $60{f_1}/({{p_1} + {p_2}})$ . The natural synchronous speed and power density of BDFM are lower than those of traditional asynchronous machine. In order to increase the natural synchronous speed and expand the machine's operating range, this article proposes a BDFG based on differential modulation and whose natural synchronous speed is $60{f_1}/| {{p_1} - {p_2}} |$ . First, this article analyzes the basic working principle of differential modulation BDFG and the key factors that prevent it from developing. Then, a design scheme of stator winding and rotor winding for differential modulation BDFG is presented. Finally, the finite-element model of the BDFG is established on the basis of the winding design example, and the experimental prototype is designed and manufactured. The steady-state performance of the differential modulation BDFG is analyzed according to the simulation and experiment, and the feasibility of the design scheme is verified.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.