Title :
Connection of frequency-dependent load and fast-rise voltage by power transmission line
Author :
Sinclair, A.J. ; Ferreira, J.A. ; van Wyk, J.D.
Author_Institution :
Ind. Electronics Res. Group, Rand Afrikaans Univ., Johannesburg, South Africa
Abstract :
This paper investigates the electromagnetics-based transmission-line effects occurring in systems consisting of fast rising voltage sources such as PWM inverters, electromagnetic loads such as electric machines, and long cables interconnecting them. The frequency dependence of the transmission line can only be neglected for sufficiently high frequencies. The frequency dependency of the inverter output impedance, the transmission line´s characteristic impedance, and the electric machine´s input impedance are investigated and a frequency-dependent model is presented for the system. It is shown that phenomenologically this model corresponds well with measurements made on a practical single-phase system
Keywords :
PWM invertors; electric impedance; electric machines; power cables; power transmission lines; PWM inverters; electric machines; electromagnetic loads; fast-rise voltage; frequency-dependent load; inverter output impedance; long cables; machine input impedance; power transmission line; Cables; Capacitors; Electric machines; Frequency; Impedance; Power transmission lines; Pulse width modulation; Pulse width modulation inverters; Transmission lines; Voltage;
Conference_Titel :
Industry Applications Conference, 1997. Thirty-Second IAS Annual Meeting, IAS '97., Conference Record of the 1997 IEEE
Conference_Location :
New Orleans, LA
Print_ISBN :
0-7803-4067-1
DOI :
10.1109/IAS.1997.629012
