Prefilter Bandwidth Effects in Carrier Wave Phase Synchronizers

2010 ◽  
Author(s):  
Antonio D. Reis ◽  
Jose P. Carvalho ◽  
Jose F. Rocha ◽  
Atilio S. Gameiro
Keyword(s):  
Carrier Wave ◽  
Wave Phase

Carrier Wave Phase Synchronizers

2009 ◽  
Author(s):  
António D. Reis ◽  
José F. Rocha ◽  
Atilio S. Gameiro ◽  
José P. Carvalho
Keyword(s):  
Carrier Wave ◽  
Wave Phase

scholarly journals Shaft Voltage Reduction Method Using Carrier Wave Phase Shift in IPMSM

Energies ◽  
2021 ◽  
Vol 14 (21) ◽  
pp. 6924
Author(s):  
Jun-Hyuk Im ◽  
Yeol-Kyeong Lee ◽  
Jun-Kyu Park ◽  
Jin Hur
Keyword(s):  
Phase Shift ◽  
Pulse Width Modulation ◽  
Harmonic Distortion ◽  
Equivalent Circuit Model ◽  
Switching Frequency ◽  
Carrier Wave ◽  
Wave Phase ◽  
Common Mode Voltage ◽  
Reduction Methods ◽  
Bearing Current

Common-Mode Voltage (CMV) induces shaft voltage and bearing current due to the electrical interaction with the parasitic capacitance of the motor. CMV, shaft voltage, and bearing current are considered the major causes of bearing fault. Motor fault in a traction system poses a risk of accidents. Therefore, it is necessary to reduce the CMV and the shaft voltage to ensure the reliability of the bearing. However, some existing CMV reduction methods are based on asynchronized space vector pulse width modulation (SVPWM), which will cause unacceptable harmonic distortion at a low switching frequency. Alternatively, some CMV reduction methods based on synchronized SVPWM burden the processor because they require a lot of calculation. In this paper, the method to reduce CMV and shaft voltage is proposed using carrier wave phase shift in SVPWM. CMV is explained in traditional SVPWM, and CMV is reduced by shifting the carrier wave phase of one phase. The simulation model is constructed through MATLAB/SIMULINK and Maxwell 2D/Twin Builder. Considering the proposed method, CMV, shaft voltage, and bearing current are analyzed by an equivalent circuit model. Moreover, the output torque behaviors with different input currents are analyzed through the simulation.

Galvanomagnetic properties in the spin-density-wave phase of (TMTSF)2PF6

1999 ◽  
Vol 09 (PR10) ◽  
pp. Pr10-247-Pr10-249 ◽  
Author(s):  
B. Korin-Hamzic ◽  
M. Basletić ◽  
N. Francetić ◽  
A. Hamzić ◽  
K. Bechgaard
Keyword(s):  
Spin Density ◽  
Density Wave ◽  
Spin Density Wave ◽  
Wave Phase ◽  
Galvanomagnetic Properties

scholarly journals Ultrafast spot-profile LEED of a charge-density wave phase transition

2021 ◽  
Vol 118 (22) ◽  
pp. 221603
Author(s):  
G. Storeck ◽  
K. Rossnagel ◽  
C. Ropers
Keyword(s):  
Phase Transition ◽  
Charge Density ◽  
Charge Density Wave ◽  
Density Wave ◽  
Wave Phase ◽  
Charge Density Wave Phase ◽  
A Charge
Sign in / Sign up

Export Citation Format

Share Document