Science Explorer Back to mapMap
Discussion
Topic · Electrical and Electronic Engineering

Power Quality and Harmonics

Power Quality and Harmonics is a research topic within Electrical and Electronic Engineering. Science Explorer counts 16k research works in it since 1950. 10.0% of them reached the world's top 10% most cited for their field and year.

This cluster of papers focuses on power quality analysis and mitigation techniques, including the use of harmonic filters, active power filters, dynamic voltage restorers, and reactive power compensation. The research covers topics such as voltage sags, wavelet transform, neural network applications, and control strategies for improving power quality in distribution systems.

  • Power Quality
  • Harmonic Filters
  • Voltage Sag
  • Active Power Filters
  • Dynamic Voltage Restorers
  • Reactive Power Compensation
  • Wavelet Transform
  • Neural Network
  • Distribution System
  • Control Strategies
Research works
16k
fractional, since 1950
In the world top 10%
1.6k
per year above
Top-10% rate
10.0%
share of its works in the world top 10%
Growth, 2018-21 → 2022-25
-4%
the tick is no change
Largest producer
China
33% of the 10 largest, 2022-now
Power Quality and Harmonics

Which countries lead Power Quality and Harmonics research?

By volume, China and India publish the most (665 and 643 works in 2022-now).

By volume, 2022-now

  1. 1 China 665 works
  2. 2 India 643 works
  3. 3 Brazil 182 works
  4. 4 United States 150 works
  5. 5 Indonesia 86 works
  6. 6 Germany 63 works
  7. 7 Türkiye 62 works
  8. 8 Iran 58 works
  9. 9 Russia 55 works
  10. 10 Spain 54 works

How concentrated that is

The same countries as shares of everything the list above accounts for. A node where two countries do two thirds of the work and one spread evenly across twelve read alike as a ranking and not at all alike here.

China: 33.0%India: 31.9%Brazil: 9.0%United States: 7.5%6 others listed: 18.7%33%largest
China665 · 33.0%India643 · 31.9%Brazil182 · 9.0%United States150 · 7.5%6 others listed378 · 18.7%

Shares of the rows listed above, not of the whole node.

Which institutions lead Power Quality and Harmonics research?

By volume in 2022-now, State Grid Corporation of China (China) publishes the most Power Quality and Harmonics research, followed by China Southern Power Grid (China) and North China Electric Power University.

By volume, 2022-now

  1. 1 State Grid Corporation of China (China)China 46 works
  2. 2 China Southern Power Grid (China)China 30 works
  3. 3 North China Electric Power UniversityChina 25 works
  4. 4 Shanghai Electric (China)China 24 works
  5. 5 Sichuan UniversityChina 20 works
  6. 6 Xi'an Jiaotong UniversityChina 20 works
  7. 7 Hohai UniversityChina 17 works
  8. 8 Shandong UniversityChina 16 works
  9. 9 Delhi Technological UniversityIndia 16 works
  10. 10 Vellore Institute of Technology UniversityIndia 14 works

Who are the leading researchers in Power Quality and Harmonics?

The most-cited researchers publishing on Power Quality and Harmonics include Frede Blaabjerg, H. Vincent Poor and Adrian Pană.

  1. 1 Frede Blaabjerg Denmark 203k citations
  2. 2 H. Vincent Poor United States 165k citations
  3. 3 Adrian Pană Romania 131k citations
  4. 4 Josep Maria Guerrero Denmark 123k citations
  5. 5 A. Olszewski United States 121k citations
  6. 6 Xiang Zhang United States 119k citations
  7. 7 A. S. Cerqueira France 116k citations

Ranked by citations received across their whole record, among researchers with at least three works on this topic.

What are the most cited papers in Power Quality and Harmonics?

The most cited paper in Power Quality and Harmonics is "The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms" (P. D. Welch, 1967), with 12,413 citations. Next come "Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components" (3,379) and "Rational approximation of frequency domain responses by vector fitting" (3,301).

Most cited papers
#PaperReleasedCitations
1 The use of fast Fourier transform for the estimation of power spectra: A method based on time averaging over short, modified periodograms P. D. Welch · IEEE Transactions on Audio and Electroacoustics Jun 1967 12,413
2 Instantaneous Reactive Power Compensators Comprising Switching Devices without Energy Storage Components Hirofumi Akagi, Yoshihira Kanazawa, Akira Nabae · IEEE Transactions on Industry Applications May 1984 3,379
3 Rational approximation of frequency domain responses by vector fitting Bjørn Gustavsen, Adam Semlyen · IEEE Transactions on Power Delivery Jul 1999 3,301
4 A review of active filters for power quality improvement Bhim Singh, Kamal Al‐Haddad, Ambrish Chandra · IEEE Transactions on Industrial Electronics 1999 2,362
5 New trends in active filters for power conditioning Hirofumi Akagi · IEEE Transactions on Industry Applications Open access 1996 1,658
All 98 most cited papers, with filters and sorting

Where is Power Quality and Harmonics research done?

The largest centres of Power Quality and Harmonics research in 2022-now are Beijing (China), Nanjing (China), Shanghai (China) and Guangzhou (China).

Largest cities, 2022-now

  1. 1 BeijingChina 108 works
  2. 2 NanjingChina 47 works
  3. 3 ShanghaiChina 46 works
  4. 4 GuangzhouChina 43 works
  5. 5 ChengduChina 41 works
  6. 6 ChennaiIndia 41 works
  7. 7 WuhanChina 36 works
  8. 8 New DelhiIndia 36 works
  9. 9 Xi'anChina 34 works
  10. 10 BhubaneswarIndia 31 works
See Power Quality and Harmonics on the map

Where is the best place to study Power Quality and Harmonics?

Among universities, judged by research, Hohai University, Vellore Institute of Technology University and Sichuan University score highest, combining excellence, specialisation, size, growth and international reach. Research strength is one signal when choosing where to study; it does not measure teaching.

0%20%40%mean 19.23%fractional works in this field (log) →share of work in the world top 10% →Vellore Institute of…Hohai UniversitySichuan UniversityXi'an Jiaotong Unive…
above the meannear itbelow it

One dot per university in the first ten of the table below, at the default weights. The upper left is the interesting corner: small places doing unusually strong work.

Excellenceshare of its work in the world top 10%, 2022-now and all time averaged
40%
Specialisationhow much of its work is in this field, counted up to 10× the world share
10%
Sizeits output in this field, on a log scale
30%
Growthoutput growth, counted from -20% to +20%
10%
Internationalshare of its work with a co-author abroad
10%
Each slider sets a weight; the share it gets of the score is beside it.
#UniversityScoreTop 10%SpecialisationWorksGrowth
1Hohai UniversityChina 69.926.3%11.0×17 -23.9%
2Vellore Institute of Technology UniversityIndia 67.132.9%5.2×14 +0.8%
3Sichuan UniversityChina 61.923.5%3.3×20 -3.5%
4Xi'an Jiaotong UniversityChina 57.914.9%4.2×20 +18.7%
5Hunan UniversityChina 56.622.1%7.1×14 -34.7%
6Siksha O Anusandhan UniversityIndia 54.920.6%24.0×13 -28.8%
7North China Electric Power UniversityChina 52.66.3%13.7×25 +6.9%
8Indian Institute of Technology DelhiIndia 52.326.4%6.9×10 -49.2%
9University of WollongongAustralia 51.26.5%13.7×11 +27.1%
10Delhi Technological UniversityIndia 49.112.8%21.3×16 -8.0%

Universities only. The score blends excellence (40%), size (30%), specialisation (10%), growth (10%), international reach (10%), 2022-now; growth compares 2018-21 with 2022-25 and counts up to +20%, since a jump from a small base is mostly noise.

Every institution in Power Quality and Harmonics, country by country

Is Power Quality and Harmonics research growing?

Output in 2022-2025 was 4% lower than in 2018-2021, peaking in 2025.

still counting19801990200020102020
grewheldshrank

The same series as a ribbon: one cell per year, darker for more. The line above answers how much; this answers when.

Its share of all research

Growing output can still be a shrinking share: all of science grows. This is Power Quality and Harmonics as a percentage of every work published that year, 0.011% in 2024.

still counting0.020%0.040%0.060%Power Quality and Harmonics0.014% in 202519801990200020102020

Fractional works of Power Quality and Harmonics over all fractional works that year. How the balance of science has shifted.

How much of it reaches the world top 10%

Year by year.

still counting5%10%15%Power Quality and Harmonics10.0% in 2025200020102020

Of each year's works in it, the share that reached the world's 10% most cited for their field and year. A field is the world for its own topics, so there is no other line to hold it against.

Which topics inside it are moving

Growth and decline on one axis around a shared zero. Two lists side by side hide the thing that matters: whether the growth dwarfs the decline, or the other way round.

Discussion

Ask a question or share a note about Power Quality and Harmonics. Posts are plain text and can be reported.