Filtering techniques to minimize the effect of long motor leads on PWM inverter-fed AC motor drive systems

Journal Article · Mon Jul 01 00:00:00 EDT 1996 · IEEE Transactions on Industry Applications

DOI:https://doi.org/10.1109/28.511650· OSTI ID:372175

Jouanne, A von ^[1]; Rendusara, D A; Enjeti, P N ^[2]; Gray, J W ^[3]

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1. Oregon State Univ., Corvallis, OR (United States). Dept. of Electrical and Computer Engineering
2. Texas A and M Univ., College Station, TX (United States)
3. Toshiba International Corp., Houston, TX (United States). Industrial Div.

In this paper, filtering techniques are investigated to reduce the motor terminal overvoltage, ringing and dv/dt in inverter-fed ac motor drive systems where long leads are required. Analysis is presented to show that the distributed LC of a cable and the pulse-width modulated (PWM) inverter switching action lead to motor terminal voltage reflections and ringing that stress the turn insulation and contribute to bearing currents. First- and second-order shunt filter designs are analyzed and compared. Detailed design equations to match the filter impedance values are presented. It is demonstrated that a first-order shunt filter connected at the motor terminals significantly reduces the overvoltage stress and ringing, and also lowers the dv/dt of the PWM switching pulse. Simulation and experimental results are presented to verify the proposed filter designs for 50-ft and 100-ft cable lengths for 460-V PWM insulated gate bipolar transistor (IGBT) ac motor drive systems.

• OSTI ID: 372175
• Report Number(s): CONF-9510203--
• Journal Information: IEEE Transactions on Industry Applications, Journal Name: IEEE Transactions on Industry Applications Journal Issue: 4 Vol. 32; ISSN ITIACR; ISSN 0093-9994
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
AC SYSTEMS
ELECTRIC FILTERS
ELECTRIC MOTORS
INVERTERS
POWER SUPPLIES