Details
| Original language | English |
|---|---|
| Title of host publication | 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023 |
| Publisher | Institute of Electrical and Electronics Engineers Inc. |
| ISBN (electronic) | 9798350398991 |
| ISBN (print) | 979-8-3503-9900-4 |
| Publication status | Published - 2023 |
| Event | 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023 - San Francisco, United States Duration: 15 May 2023 → 18 May 2023 |
Abstract
Salient-pole synchronous hydro generators are usually equipped with a damper winding for compensating torque pulsation and unbalanced load. This consists of multiple short-circuited copper bars located in the pole shoe. For hydro generators, the damper winding connection from pole to pole can be realized in different ways, which are a) a conventional copper ring or b) an indirect connection where the path of the current goes through the pole end plate and rotor rim. The influence of the pole-to-pole connection type on the subtransient reactances and damper currents is investigated in this paper, since there is little information on this subject in the literature. A numerical simulation model is proposed and the calculated subtransient reactances are compared to measurements performed on a 366 kVA prototype hydro generator, in which the pole-to-pole connection type can be changed. Additionally, the steady-state damper current from pole to pole at no-load condition is also calculated and compared to measurements obtained using a telemetry system on the same machine. The innovative contribution of this paper, which explains how to account for the effect of the damper winding pole-to-pole connection type, is especially relevant for simulations performed during the design phase of hydro generators.
Keywords
- air-gap field, Damper winding, electrical machines, electromagnetic transients, hydro generators, reactance
ASJC Scopus subject areas
- Engineering(all)
- Electrical and Electronic Engineering
- Engineering(all)
- Mechanical Engineering
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2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023. Institute of Electrical and Electronics Engineers Inc., 2023.
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Effect of the damper winding pole-to-pole connection on the subtransient reactance and steady-state damper current in hydro generators
AU - Ridder, Andreas
AU - De Barros, Allan
AU - Emmrich, Dirk
AU - Ebrahimi, Amir
AU - Schwarz, Babette
PY - 2023
Y1 - 2023
N2 - Salient-pole synchronous hydro generators are usually equipped with a damper winding for compensating torque pulsation and unbalanced load. This consists of multiple short-circuited copper bars located in the pole shoe. For hydro generators, the damper winding connection from pole to pole can be realized in different ways, which are a) a conventional copper ring or b) an indirect connection where the path of the current goes through the pole end plate and rotor rim. The influence of the pole-to-pole connection type on the subtransient reactances and damper currents is investigated in this paper, since there is little information on this subject in the literature. A numerical simulation model is proposed and the calculated subtransient reactances are compared to measurements performed on a 366 kVA prototype hydro generator, in which the pole-to-pole connection type can be changed. Additionally, the steady-state damper current from pole to pole at no-load condition is also calculated and compared to measurements obtained using a telemetry system on the same machine. The innovative contribution of this paper, which explains how to account for the effect of the damper winding pole-to-pole connection type, is especially relevant for simulations performed during the design phase of hydro generators.
AB - Salient-pole synchronous hydro generators are usually equipped with a damper winding for compensating torque pulsation and unbalanced load. This consists of multiple short-circuited copper bars located in the pole shoe. For hydro generators, the damper winding connection from pole to pole can be realized in different ways, which are a) a conventional copper ring or b) an indirect connection where the path of the current goes through the pole end plate and rotor rim. The influence of the pole-to-pole connection type on the subtransient reactances and damper currents is investigated in this paper, since there is little information on this subject in the literature. A numerical simulation model is proposed and the calculated subtransient reactances are compared to measurements performed on a 366 kVA prototype hydro generator, in which the pole-to-pole connection type can be changed. Additionally, the steady-state damper current from pole to pole at no-load condition is also calculated and compared to measurements obtained using a telemetry system on the same machine. The innovative contribution of this paper, which explains how to account for the effect of the damper winding pole-to-pole connection type, is especially relevant for simulations performed during the design phase of hydro generators.
KW - air-gap field
KW - Damper winding
KW - electrical machines
KW - electromagnetic transients
KW - hydro generators
KW - reactance
UR - http://www.scopus.com/inward/record.url?scp=85172736128&partnerID=8YFLogxK
U2 - 10.1109/IEMDC55163.2023.10239013
DO - 10.1109/IEMDC55163.2023.10239013
M3 - Conference contribution
AN - SCOPUS:85172736128
SN - 979-8-3503-9900-4
BT - 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 IEEE International Electric Machines and Drives Conference, IEMDC 2023
Y2 - 15 May 2023 through 18 May 2023
ER -