Current ripple reduction to improve electromagnetic torque and flux characteristics in AC drives

Ravi, Hemantha Kumar; Lenin, N. C.

doi:10.1080/00207217.2021.1969443

Cited by 1 publication

(1 citation statement)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Among non-linear current regulation strategies, space vector-based FOC schemes are preferred because of their constant switching frequency, balanced phase currents, linear current control characteristics, and good DC-link voltage utilization [17][18][19]. In the early 1990s, Kazmierkowski et al introduced a hysteresis controller and switching table-based FOC control scheme [17][18].…”

Section: Pmsmmentioning

confidence: 99%

New Steady State Current Error Limiters for PMSM Drives

Ravı,

N C

2024

Gazi University Journal of Science

Self Cite

View full text Add to dashboard Cite

In permanent magnet synchronous motor drives, d-q current errors are examined using hysteresis controllers. The inverter is switched based on the hysteresis controller responses, to limit current errors, and thereby reducing current ripple. But, due to the faster current dynamic characteristics, switching the current errors within the hysteresis band becomes difficult. This results in d-q current ripples and harmonics. In this paper, two current error-limiting schemes are proposed. In the first scheme, current errors are switched within the band using additional control parameters (dynamic response of q-axis current), to select the control space vector from a switching table. Whereas in the second scheme, a duty ratio regulator is designed to achieve minimum q-axis current error. The proposed works are simulated in MATLAB/Simulink and verified through experimentation. Since the current ripple and harmonics are also reduced, the thermal impact of these performance pa-rameters on the power inverter is also studied.

show abstract