Steady-state performance assessment of three- and five-phase permanent magnet generators connected to a diode bridge rectifier under open-circuit faults

2010 ◽  
Vol 4 (5) ◽  
pp. 420 ◽  
Author(s):  
N.E.A.M. Hassanain ◽  
J.E. Fletcher
Keyword(s):  
Steady State ◽  
Performance Assessment ◽  
Permanent Magnet ◽  
Open Circuit ◽  
Bridge Rectifier ◽  
Permanent Magnet Generators ◽  
Steady State Performance

scholarly journals Line-Start Permanent-Magnet Motor Single-Phase Steady-State Performance Analysis

2004 ◽  
Vol 40 (2) ◽  
pp. 516-525 ◽  
Author(s):  
T.J.E. Miller ◽  
M. Popescu ◽  
C. Cossar ◽  
M. McGilp ◽  
G. Strappazzon ◽  
...  
Keyword(s):  
Steady State ◽  
Performance Analysis ◽  
Permanent Magnet ◽  
Single Phase ◽  
Permanent Magnet Motor ◽  
Steady State Performance

A Self-Excited Synchronous Motor with Controlled Excitation

1986 ◽  
Vol 23 (2) ◽  
pp. 127-132
Author(s):  
T. F. Chan
Keyword(s):  
Steady State ◽  
Power Factor ◽  
Synchronous Motor ◽  
Experimental Results ◽  
Direct Connection ◽  
Excitation Control ◽  
Motor Power ◽  
Control Scheme ◽  
Bridge Rectifier ◽  
Steady State Performance

An excitation control scheme for a two-axis excited synchronous motor is described, which, by the direct connection of the quadrature field winding and the armature circuit through a diode bridge rectifier, enables the motor power factor to be maintained at approximately unity, irrespective of load. The steady-state performance based on a simple phasor diagram is verified by experimental results.

scholarly journals Steady-state performance investigation of open-circuit hydrostatic drives used in the rotary head of drill machine

2017 ◽  
Vol 233 (1) ◽  
pp. 3-20 ◽  
Author(s):  
Alok Vardhan ◽  
K Dasgupta ◽  
N Kumar ◽  
Santosh Kr Mishra
Keyword(s):  
Steady State ◽  
High Speed ◽  
Mining Operation ◽  
Open Circuit ◽  
Alternative Drive ◽  
Displacement Pump ◽  
Torque Loss ◽  
Drive Systems ◽  
Low Torque ◽  
Steady State Performance

This paper highlights the steady-state performance of open-circuit hydrostatic drives for the rotary head of drill machine through modeling and experiment. In this respect, two alternative drive systems are considered. A drive system that consists of a variable displacement pump and two high-speed low-torque hydro-motors with a gear reducer unit and the other one consists of an identical pump and a low-speed high-torque hydro-motor. The steady-state model of the proposed drive arrangements is made by bondgraph simulation technique, where the relationship of the various losses of the components are obtained as a function of operating parameters and are identified experimentally. Using them, the slip and torque loss along with the overall efficiency of the drives are characterized. The performances of the hydrostatic drives are compared for the usual operating speed range of the drill machine used in mining operation. The studies made also identify the operating range of the proposed hydrostatic drives with reasonable efficiency.

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