Design and optimization of voltage clamps for voltage source inverters

Swanepoel, P.H.; Wyk, J.D. van

doi:10.1109/pesc.1992.254706

Cited by 8 publications

(1 citation statement)

References 4 publications

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“…R ov must be chosen sufficiently small to ensure that C ov is fully discharged before next turn-off. At the same time the discharge transient should be overdamped to prevent undesired switch voltage oscillations, imposing a minimum value of R ov [10].…”

Section: Mode-iiimentioning

confidence: 99%

Power electronic converter for characterization of hall-effect current sensors

Kumar

2014

2014 IEEE International Conference on Power Electronics, Drives and Energy Systems (PEDES)

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Hall-effect current sensors are widely used in industrial applications. Characterization of their steady state, dynamic capabilities and thermal endurance verification is important to ensure the sensor performance. It is shown that an H-bridge inverter topology with an RCD snubber, packaged as proposed, can be used for large signal sinusoidal current characterization and step current characterization of the current sensor. Analytical expression of step current is derived and used to produce rising and falling step excitation with controlled peak value and transition time. A hybrid PWM technique with a frequency adaptive proportional-resonant current controller is used to produce large magnitude sinusoidal current with controlled frequency and magnitude. Using IGBT and MOSFET legs in the H-bridge reduces overall power consumption of the current source during sinusoidal current generation. The hardware is fabricated in the laboratory, and its performance is validated using high bandwidth current probe.

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Section: Mode-iiimentioning

confidence: 99%