Leszek S. Czarnecki

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Reference excerpt

Leszek S. Czarnecki (born May 14, 1939) is a Polish-American electrical engineer and professor emeritus at Louisiana State University (LSU). He is known for his work on power theory in electrical circuits, particularly the development of the Currents' Physical Components (CPC) Power Theory.

Early life and education Czarnecki was born in Poland and earned his Ph.D. in 1969 and later D.Sc. in 1984 from the Silesian University of Technology in Gliwice. His academic foundation laid the groundwork for his later contributions to electrical engineering.

Academic career From 1984 to 1986, he was a Visiting Research Officer at the National Research Council of Canada. From 1987 to 1989, he served as Associate Professor of Electrical Engineering at the University of Zielona Góra, Poland. In 1989, he joined LSU's Department of Electrical and Computer Engineering. He became a full professor in 1999 and was named Distinguished Professor in 2005. In 2006, he was awarded the title of Professor of Technological Sciences by the President of Poland.

Research contributions Czarnecki's research focuses on power theory and compensation methods in circuits with nonsinusoidal currents. He is the creator of the CPC Power Theory, which has significantly advanced understanding and practical applications in energy transfer in electrical systems. In 2023, his book, Powers and Compensation in Circuits with Nonsinusoidal Currents, was published by Oxford University Press, encapsulating decades of research.

Awards and honors Life Fellow of the Institute of Electrical and Electronics Engineers (IEEE) (1996) Knight's Cross of the Order of Merit of the Republic of Poland (1999) Named among the top 2% of world faculty by Stanford University (2021)

Public activity From 1981, when the Marshal Law was imposed in Poland, and the Solidarity movement was de-legalized, Czarnecki was involved in an underground activity aimed at terminating the communist regime and restoring democracy. In 1998, Czarnecki initiated and supervised with his wife, Maria, the process of the adaptation by the Louisiana Parliament of a Resolution that urged the Senate of the United States to include Poland, the Czech Republic, and Hungary into NATO. This Resolution motivated Senators of Louisiana to the US Congress to vote in favour of that inclusion. For this activity, Czarnecki and his wife Maria were decorated by the President of Poland with the Knight Cross of the Medal of Merit of the Republic of Poland

Personal life Czarnecki is married to mathematician, Maria, and has two sons, Jakub and Tomasz. He is also an mountaineer and scuba diver. He was on the team that accomplished first traverse of Rwenzori ridge in Africa in 1975, made a ski traverse od Svalbard in 1977, as well as climbed peaks including Lhotse in the Himalayas in 1979, Cordillera Huayhuash in Andes in 1981, and solo climb of Denali in Alaska 1999.

Selected Publications Czarnecki, L. S. (2023). Powers and Compensation in Circuits with Nonsinusoidal Currents. Oxford University Press. Czarnecki, L. S. (1983). Additional discussion to Reactive power under nonsinusoidal conditions. IEEE Trans. on Power and Systems, Vol. PAS-102, No. 4. Czarnecki, L. S. (1984). Considerations on the reactive power in nonsinusoidal situations. IEEE Trans. Instr. Measurement, Vol. IM-34. Czarnecki, L. S. (1987). What is wrong with the Budeanu concept of reactive and distortion power and why it should be abandoned. IEEE Transactions on Instrumentation and Measurement, 36(3), 834-837. Czarnecki, L. S. (1988). Orthogonal decomposition of the current in a three-phase non-linear asymmetrical circuit with nonsinusoidal voltage. IEEE Trans. IM., Vol. IM-37, No. 1. Czarnecki, L. S. (1989). Reactive and unbalanced currents compensation in three-phase circuits under nonsinusoidal conditions. IEEE Trans. Instr. Measur., Vol. IM-38, No. 3. Czarnecki, L. S., Swietlicki T. (1990). Powers in nonsinusoidal networks, their analysis, interpretation, and measurement. IEEE Trans. Instr. Measur., Vol. IM-39, No. 2. Czarnecki, L. S. (1997). Budeanu and Fryze: Two frameworks for interpreting power properties of circuits with nonsinusoidal voltages and currents. Archiv fur Elektrotechnik, (81), N. 2. Czarnecki, L. S. (1999). Energy flow and power phenomena in electrical circuits: illusions and reality. Archiv fur Elektrotechnik, (82), No. 4. Czarnecki, L. S. (2004). On some misinterpretations of the Instantaneous Reactive Power p-q Theory. IEEE Trans. on Power Electronics, Vol. 19, No.3. Czarnecki, L. S. (2009). Effect of supply voltage harmonics on IRP-based switching compensator control. IEEE Trans. on Power Electronics, Vol. 24, No. 2. Czarnecki, L. S., Haley P. M. (2015). Unbalanced power in four-wire systems and its reactive compensation. IEEE Trans. on Power Delivery, Vol. 30, No. 1, Czarnecki, L. S. (2017). Critical comments on the Conservative Power Theory (CPT). Przegląd Elektrotechniczny, R3, No. 1. Bhattarai P.D., Czarnecki, L. S. (2017). Currents’ Physical Components (CPC) of the Supply Current of Unbalanced LTI Loads at Asymmetrical and Nonsinusoidal Voltage. Przegląd Elektrotechniczny, R. 93, No. 9.

References

External links Official website LSU Engineering News IEEE Xplore Author Details

Illustrations

Worked examples

Example 1 — a first encounter with Leszek S. Czarnecki

Start with the simplest possible case. Write down what Leszek S. Czarnecki claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In engineering, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Leszek S. Czarnecki before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Leszek S. Czarnecki ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Leszek S. Czarnecki

In research: Leszek S. Czarnecki appears in engineering research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Leszek S. Czarnecki in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Leszek S. Czarnecki is common in secondary-school and first-year university syllabi. It links to neighbouring topics 1939 births, Electrical engineers, Living people, so understanding it makes those chapters shorter.
In everyday life: Look for Leszek S. Czarnecki outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

How to study Leszek S. Czarnecki in 20 minutes

Read the reference excerpt below once, without taking notes.
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Frequently asked questions

What is Leszek S. Czarnecki in simple terms?

Leszek S. Czarnecki (born May 14, 1939) is a Polish-American electrical engineer and professor emeritus at Louisiana State University (LSU).

Why does Leszek S. Czarnecki matter?

Because it connects several engineering ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Leszek S. Czarnecki?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Leszek S. Czarnecki.