Title :
Reduction of conducted emissions and motor bearing currents in current source PWM inverter drives
Author :
Halkosaari, T. ; Tuusa, H.
Author_Institution :
Inst. of Power Electron., Tampere Univ. of Technol., Finland
Abstract :
EMC issues have been increasingly discussed. In adjustable speed PWM AC drives problems occur due to leakage currents, i.e. common mode currents resulting from the high motor voltage du/dt values versus the ground. These currents flow through the parasitic capacitance of the motor cable and the motor windings. In this paper an innovative low cost solution to mitigate common mode currents in a PWM current source inverter is proposed. The results are verified by Pspice(R) simulations
Keywords :
AC motor drives; PWM invertors; electromagnetic compatibility; electromagnetic interference; leakage currents; machine bearings; machine windings; variable speed drives; EMC; PWM current source inverter; Pspice simulations; adjustable speed PWM AC drives; common mode currents; conducted emissions reduction; current source PWM inverter drives; high motor voltage du/dt values; leakage currents; motor bearing currents; motor cable; motor windings; parasitic capacitance; Costs; Drives; Electromagnetic compatibility; Parasitic capacitance; Pulse width modulation; Pulse width modulation converters; Pulse width modulation inverters; Rectifiers; Voltage; Wire;
Conference_Titel :
Power Electronics Specialists Conference, 1999. PESC 99. 30th Annual IEEE
Conference_Location :
Charleston, SC
Print_ISBN :
0-7803-5421-4
DOI :
10.1109/PESC.1999.785627
