A survey of output filter topologies to minimize the impact of PWM inverter waveforms on three-phase AC induction motors

Choochuan, C.

doi:10.1109/ipec.2005.206967

Cited by 48 publications

(19 citation statements)

References 22 publications

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“…In three phase motor drive system the passive common mode filter has been widely used [14] and its application in grid-connected PV system is also researched recently [15] [16]. Fig.…”

Section: Leakage Current Supression With Bypass Capacitormentioning

confidence: 99%

Leakage current suppression for transformerless ZVS full-bridge inverter

Chen

2014

2014 International Power Electronics and Application Conference and Exposition

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Leakage current suppression for a transformerless zero voltage switching (ZVS) full-bridge inverter is investigated. The leakage current model and the common mode voltage of the ZVS full-bridge inverter are analyzed. The leakage current flowing through the parasitic capacitor between PV panels and the ground is reduced by a common mode inductor and the bypass capacitors. The theoretical analysis of proposed method is presented. Finally the leakage current suppression is verified by simulation and experiment.

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“…In three phase motor drive system the passive common mode filter has been widely used [14] and its application in grid-connected PV system is also researched recently [15] [16]. Fig.…”

Section: Leakage Current Supression With Bypass Capacitormentioning

confidence: 99%

Leakage current suppression for transformerless ZVS full-bridge inverter

Chen

2014

2014 International Power Electronics and Application Conference and Exposition

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“…In particular, the methods proposed in scientific literature range from the selection of appropriate inverters switching patterns to the use of passive or active filter-based solutions [3]- [7]. Since EMI filters usually account for as much as 30% of the total converter weight, the aspect of power density, i.e.…”

Section: Introductionmentioning

confidence: 99%

Design and Performance Evaluation of a High Power-Density EMI Filter for PWM Inverter-Fed Induction-Motor Drives

Ala

Giaconia

Giglia

et al. 2016

IEEE Trans. on Ind. Applicat.

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Abstract-This paper presents the design of an electromagnetic interference (EMI) filter for a low voltage high current induction motor drives supplied by DC power grids. In order to effectively design the EMI filter a suitable common mode/differential mode (CM/DM) separation technique has been used. Due to the high operating currents, the software based separation technique using time domain measurements has been applied. The proposed technique allows the CM and DM sections of the EMI filter to be properly selected in a more economical way, i.e. without the need of dedicated hardware or costly radio frequency (RF) instrumentation. The design has been done according to a power density criterion. The effectiveness of the proposed CM/DM separation technique and the EMI filter features/performance have been assessed by experimental tests, carried out with a 1.1 kW PWM inverter-fed induction motor drive, supplied by a 48V DC power grid.

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“…A dv/dt filter reduces both differential mode voltage and common mode current. The major dv/dt filter topologies in use are LC filter, RC output filter, LCR filter, LC filter with clamping diodes, and dv/dt reactor [4]. A condition where the resonant frequency is less than the switching frequency allows the usage of LCR filter.…”

Section: Introductionmentioning

confidence: 99%

“…However, the resistance increases the circuit losses. Active damping in the inverter controls can be used to reduce the circuit losses [4], [5].…”

Section: Introductionmentioning

confidence: 99%

LC clamp filter for voltage reflection due to long cable in induction motor drives

Mini

Manandhar³

2014

2014 Annual International Conference on Emerging Research Areas: Magnetics, Machines and Drives (AICERA/iCMMD)

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In many industrial applications, Pulse Width Modulated (PWM) inverter-fed induction motors needs long cables. The PWM inverter output voltage pulses behave like travelling waves on these cables. This phenomenon causes voltage reflection that results in over voltage at the motor terminals. Over voltage at the terminals of the motor is attributed by the rise time of the inverter pulses, length of the power cable that connects the inverter to the motor, or the disparity in impedance between the inverter, cable, and the motor. High dv/dt pulse at the inverter output terminal causes voltage reflection in the cable. One of the methods used to mitigate the voltage reflection at the input terminals of the motor is to increase the rise time of the voltage at these terminals. To accomplish this delay in voltage rise, a passive filter that consists of an LC clamp circuit can be used. This circuit helps to reduce the dv/dt value. Both the common mode and the differential mode issues are addressed by connecting the neutral of the LC clamp filter with diode to the mid-point of DC bus. Since the size of the filter required is small even this filter can be placed inside the inverter enclosure. Thus, the use of LC filter with diode reduces the voltage reflection issue and increases the life of the motor and the reliability of the drive systems. Index Terms-dv/dt, differential mode voltage, common mode current, voltage reflection, induction motor, IGBT

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A survey of output filter topologies to minimize the impact of PWM inverter waveforms on three-phase AC induction motors

Cited by 48 publications

References 22 publications

Leakage current suppression for transformerless ZVS full-bridge inverter

Leakage current suppression for transformerless ZVS full-bridge inverter

Design and Performance Evaluation of a High Power-Density EMI Filter for PWM Inverter-Fed Induction-Motor Drives

LC clamp filter for voltage reflection due to long cable in induction motor drives

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