Abstract
The large-scale integration of power electronic based systems poses new challenges to the stability and power quality of modern power grids. The wide timescale and frequency-coupling dynamics of electronic power converters tend to bring in harmonic instability in the form of resonances or abnormal harmonics in a wide frequency range. This paper provides a systematic analysis of harmonic stability in the future power-electronic-based power systems. The basic concept and phenomena of harmonic stability are elaborated first. It is pointed out that the harmonic stability is a breed of small-signal stability problems, featuring the waveform distortions at the frequencies above and below the fundamental frequency of the system. The linearized models of converters and system analysis methods are then discussed. It reveals that the linearized models of ac-dc converters can be generalized to the harmonic transfer function, which is mathematically derived from linear time-periodic system theory. Lastly, future challenges on the system modeling and analysis of harmonic stability in large-scale power electronic based power grids are summarized.
Keywords
HarmonicsElectric power systemHarmonicConvertersHarmonic analysisPower electronicsWaveformPower (physics)Stability (learning theory)Electronic engineeringControl theory (sociology)Computer scienceEngineeringElectrical engineeringPhysicsVoltageAcoustics
Affiliated Institutions
Related Publications
Multilevel selective harmonic elimination PWM technique in series-connected voltage inverters
The selective harmonic elimination PWM (SHEPWM) method is systematically applied for the first time to multilevel series-connected voltage source PWM inverters. The method is im...
A new type of STATCOM based on cascading voltage-source inverters with phase-shifted unipolar SPWM
In this paper, a new type of static compensator (STATCOM) is proposed. This new STATCOM is constructed by cascading several identical full-bridge (H bridge) voltage-source inver...
Comparison of multilevel inverters for static VAr compensation
Inverter-based static VAr compensators (SVCs) can benefit from the use of a multilevel invertor structure which allows the elimination of the step-up transformer. The inherent h...
A vector control technique for medium voltage multilevel inverters
This paper presents a switching strategy for multilevel cascade inverters, based on the space vector theory. The proposed switching strategy generates a voltage vector with very...
Optimum harmonic reduction with a wide range of modulation indexes for multilevel converters
This paper proposes a novel modulation technique applying in multilevel voltage source converters suitable for high voltage power supplies and flexible AC transmission system (F...
Publication Info
- Year
- 2018
- Type
- article
- Volume
- 10
- Issue
- 3
- Pages
- 2858-2870
- Citations
- 1167
- Access
- Closed
External Links
Social Impact
Altmetric
PlumX Metrics
Social media, news, blog, policy document mentions
Citation Metrics
1167
OpenAlex
Cite This
Xiongfei Wang,
Frede Blaabjerg
(2018).
Harmonic Stability in Power Electronic-Based Power Systems: Concept, Modeling, and Analysis.
IEEE Transactions on Smart Grid
, 10
(3)
, 2858-2870.
https://doi.org/10.1109/tsg.2018.2812712
Identifiers
- DOI
- 10.1109/tsg.2018.2812712