Design and Test for a New Type of Permanent Magnet Synchronous Generator Applied in Tidal Current Energy System

Abstract

This article takes a 120 W direct-drive permanent magnet synchronous generator (PMSG) for tidal current energy as the research object, with the aim of starting at low flow velocity, low voltage regulation, and high sealing performance. The research was conducted on the design method of the generator, and the parameter calculation formula is modified based on the structural characteristics of the generator. The design scheme is simulated using the finite element method, and the voltage regulation is optimized using evolutionary algorithm. A prototype was manufactured based on the optimized scheme, and drag experiments and sealing tests were conducted. After that, the generator and impeller were assembled, and water tank drag experiments were conducted. The experimental results verified the reliability of the motor design method in this paper.

Direct Drive Permanent Magnet Synchronous Generator: Design, Modeling, and Control for Wind Energy Applications

“…In this section, a DD-SPMSG with 64 poles pairs, 660 kW rated power and 46.875 rpm rated mechanical speed is analytically designed. The principal dimensions of the generator are calculated using classical equations given in literature [6][7][8][9][10][11][12][13].…”

“…with: J s : the current density; K r : the stator slot fill factor; K s is the slot proportion; Q s is the number of stator slots. The height (m h ) and the width (m w ) of the permanent magnet are expressed by [7,12,13]:…”