Accession Number : AD0630631

Title :   ELECTRIC MOTORS SUPPLIED BY NONSINUSOIDAL VOLTAGES.

Descriptive Note : Research rept. Jul-Sep 65,

Corporate Author : ARMY ENGINEER RESEARCH AND DEVELOPMENT LABS FORT BELVOIR VA

Personal Author(s) : Koopman,Richard J. W.

Report Date : JAN 1966

Pagination or Media Count : 40

Abstract : The report covers a study to represent electric motors on analog computers, with the representation being usable when the motor is supplied by nonsinusoidal voltages. Such a representation is of particular interest when matching characteristics of static inverters and motors powered from them. The computer representation is based on the coupled circuit approach to motor analysis, permitting ready representation of both steady-state and transient phenomena; winding or voltage unbalance; space harmonics; and application of the scheme to a range of types of motors. In order to approach the complexity of the problem gradually, the balanced equivalent two-phase motor with no space harmonics was represented in this study. The report concludes that: (a) Qualitative observations corroborate the correctness of the analog computer representation of the motor which has been derived during this study. (b) The analog computer representation permits calculation of motor performance for applied sinusoidal voltages as well as for nonsinusoidal voltages supplied by inverters. (c) High-accuracy components are necessary for the analog computer representation of the motor. (d) Meaningful quantitative data could not be obtained, primarily because of deficiencies in the computer components. (Author)

Descriptors :   (*ELECTRIC MOTORS, VOLTAGE), INVERTERS, PERFORMANCE(ENGINEERING), MATHEMATICAL MODELS, COMPUTER PROGRAMMING

Subject Categories : Electric Power Production and Distribution
      Electricity and Magnetism

Distribution Statement : APPROVED FOR PUBLIC RELEASE