Abstract
This paper introduces a new approach to the capacitor-commutated converter (CCC) for HVDC. A small-rated three-phase voltage-source PWM converter is connected between a series commutation capacitor and thyristor rectifier through matching transformers. The PWM converter acts as auxiliary commutation-capacitor for the thyristor rectifier while the series capacitor acts as the main commutation capacitor. The capacitance, which is the sum of the small-rated active and series passive capacitors, is variable, so that stable commutation is obtained. In CCCs commutation failure occurs when the ac bus voltage is recovered whereas the proposed combined commutation-capacitor can achieve successful commutation for both rapidly decreasing and increasing ac bus voltages. The basic principle of the proposed active-passive capacitor commutated converter is discussed in detail. Then, constant margin-angle control with a constant firing angle of the thyristor converter is proposed using a function generator block. Digital simulation demonstrates the novelty and effectiveness of the proposed active-passive capacitor commutated converter.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference |
| Pages | 968-973 |
| Number of pages | 6 |
| Volume | 2 |
| Edition | WINTER MEETING |
| Publication status | Published - 2001 |
| Externally published | Yes |
| Event | 2001 IEEE Power Engineering Society Winter Meeting - Columbus, OH, United States Duration: Jan 28 2001 → Feb 1 2001 |
Other
| Other | 2001 IEEE Power Engineering Society Winter Meeting |
|---|---|
| Country | United States |
| City | Columbus, OH |
| Period | 1/28/01 → 2/1/01 |
Fingerprint
Keywords
- Active capacitor
- Active commutation capacitor
- Capacitor commutated converter
- Commutation capacitor
- Commutation failure
- Constant margin-angle control
- HVDC
- Thyristor rectifier
- Variable active capacitor
ASJC Scopus subject areas
- Engineering(all)
- Energy(all)
Cite this
A new approach to the capacitor-commutated converter for HVDC - A combined commutation-capacitor of active and passive capacitors. / Tanaka, Toshihiko; Nakazato, Masafumi; Funabiki, Shigeyuki.
Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference. Vol. 2 WINTER MEETING. ed. 2001. p. 968-973.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - A new approach to the capacitor-commutated converter for HVDC - A combined commutation-capacitor of active and passive capacitors
AU - Tanaka, Toshihiko
AU - Nakazato, Masafumi
AU - Funabiki, Shigeyuki
PY - 2001
Y1 - 2001
N2 - This paper introduces a new approach to the capacitor-commutated converter (CCC) for HVDC. A small-rated three-phase voltage-source PWM converter is connected between a series commutation capacitor and thyristor rectifier through matching transformers. The PWM converter acts as auxiliary commutation-capacitor for the thyristor rectifier while the series capacitor acts as the main commutation capacitor. The capacitance, which is the sum of the small-rated active and series passive capacitors, is variable, so that stable commutation is obtained. In CCCs commutation failure occurs when the ac bus voltage is recovered whereas the proposed combined commutation-capacitor can achieve successful commutation for both rapidly decreasing and increasing ac bus voltages. The basic principle of the proposed active-passive capacitor commutated converter is discussed in detail. Then, constant margin-angle control with a constant firing angle of the thyristor converter is proposed using a function generator block. Digital simulation demonstrates the novelty and effectiveness of the proposed active-passive capacitor commutated converter.
AB - This paper introduces a new approach to the capacitor-commutated converter (CCC) for HVDC. A small-rated three-phase voltage-source PWM converter is connected between a series commutation capacitor and thyristor rectifier through matching transformers. The PWM converter acts as auxiliary commutation-capacitor for the thyristor rectifier while the series capacitor acts as the main commutation capacitor. The capacitance, which is the sum of the small-rated active and series passive capacitors, is variable, so that stable commutation is obtained. In CCCs commutation failure occurs when the ac bus voltage is recovered whereas the proposed combined commutation-capacitor can achieve successful commutation for both rapidly decreasing and increasing ac bus voltages. The basic principle of the proposed active-passive capacitor commutated converter is discussed in detail. Then, constant margin-angle control with a constant firing angle of the thyristor converter is proposed using a function generator block. Digital simulation demonstrates the novelty and effectiveness of the proposed active-passive capacitor commutated converter.
KW - Active capacitor
KW - Active commutation capacitor
KW - Capacitor commutated converter
KW - Commutation capacitor
KW - Commutation failure
KW - Constant margin-angle control
KW - HVDC
KW - Thyristor rectifier
KW - Variable active capacitor
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M3 - Conference contribution
VL - 2
SP - 968
EP - 973
BT - Proceedings of the IEEE Power Engineering Society Transmission and Distribution Conference
ER -