Accession Number:

AD0607612

Title:

THE CALCULATION OF HIGHER HARMONICS OF PERIODICALLY SWITCHED A-C VOLTAGES,

Descriptive Note:

Corporate Author:

TRW SPACE TECHNOLOGY LABS LOS ANGELES CALIF

Personal Author(s):

• Sichling,George H.

Report Date:

1959-09-01

Pagination or Media Count:

83.0

Abstract:

The output waveform of switched semi-conductors and of magnetic amplifier circuits usually is not a pure fundamental waveform but contains harmonics which vary with the commutation. This paper analyzes three basic types of switched output waveforms sinusoidal, rectified sinusoidal, and square wave. The results are summarized by sets of handbook-type curves from which the harmonics for various switching modes can be readily determined. Mathematical derivations are provided which make it possible to calculate the harmonics present for the most common switching modes. This information is useful in filter design as well as providing information for calculating losses in a load supplied with this waveform. In addition, the output waveform for the minimum harmonic content is indicated by the curves.

Descriptors:

• *HARMONIC ANALYSIS
• ALTERNATING CURRENT
• SWITCHING CIRCUITS
• VOLTAGE
• FOURIER ANALYSIS
• SERIES(MATHEMATICS)
• GRAPHICS
• FUNCTIONS(MATHEMATICS)
• SPECIAL FUNCTIONS(MATHEMATICS)
• INTEGRALS

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE