Alpha Technologies Inc.

The University of British Columbia

Peter Ksiazek

Glenn Lumanog

Martin Ordonez

Rifat Siddique

Rahul Khandekar

Navid Shafiei

Mehdi Mohammadi

Mohammad Mahdavi

Andres Bianchi

In a line to line fault detection and protection system, a source end power supply supplies power to a remote load over a transmission line and monitors the dynamic behavior of a transmission line power characteristic. If that dynamic behavior is outside a constraint that is actively imposed on the transmission line dynamic behavior by a load end power conditioning system, a possible line to line fault is recognized. The preferred power characteristic is current and the preferred constraint is a maximum rate of change of current drawn from the transmission line by the load end power conditioning system.

Touch safe DC powering for remote loads

Synchronous rectification methods and algorithms, and polarity sensing techniques, based on the homopolarity cycle concept for conduction loss reduction in LLC resonant converters are provided. In a half bridge rectifier configuration, one of rectifier switches is switched ON when the polarity of the inverter and rectifier voltages are both positive and the other rectifier switch is switched ON when both polarities are negative.

Synchronous rectification of LLC converters based on homopolarity

Growing community of inventors

Burnaby, Canada

Peter Ksiazek