Soft-switching leader, Pre-Switch, demonstrates ‘astonishing efficiency’ across full load range

Pre-Switch, Inc., the company that has developed the world’s first AI-based
forced-resonant, soft-switching technology enabling ultra-efficient DC/AC,
AC/DC inverters running at 100kHz, has announced new data proving the
efficiency of the company’s architecture at low load as well as full load.
Tests performed on Pre-Switch’s CleanWave2 reference inverter at 100kHz
switching speed show the system is 98.5% efficiency at 5% load. Peak
efficiency is 99.57%.

Bruce Renouard, Pre-Switch CEO comments: “Over a year ago we announced peak
efficiency figures of over 99%. Since that time, we have been improving our
AI algorithm to improve low-load performance. The results are astonishing.
98.5% efficiency at 5% load is far in excess of what can be achieved by any
other approach today, proving that soft-switching and the Pre-SwitchT
architecture will lead the emobility electrification revolution.”

Pre-Switch eliminates switching losses, enabling 10X higher switching
frequencies, resulting in huge efficiency gains. In EVs this leads to
improved motor efficiency, range and reliability. The Pre-Switch
architecture addresses the challenges that, until now, have prevented
industry from making the transition to soft-switching for EV inverters.  The
exceptional efficiency at low loads and high frequency low distortion sign
wave to the motor significantly improves WLTP (EPA’s European milage test
system) range performance.  The topology is a variation of the Auxiliary
Resonant Commutated Pole (ARCP) soft-switching converter design. However,
Pre-Switch employs sophisticated, embedded artificial intelligence to solve
complex switching system timing calculations dynamically to ensure accurate
soft-switching under changing input voltage, output load, device tolerances,
and temperature changes. Adaptations are made on a cycle-by-cycle basis to
minimize losses and maximize efficiency.
Adds Renouard: “We believe that our technology is the paradigm shift that EV
OEMs have been searching for, enabling essential efficiency differentiation
and EV leadership. These results prove how effective our technology is and
definitively validate our previous claims.”

Pre-Switch is already working with leading EV makers and other emobility
companies; evaluation systems are available for other interested parties.

About Pre-Switch
Pre-Switch, Inc. is a Silicon Valley company that delivers AI-based
soft-switching power architectures that minimize switching losses, resulting
in dramatic improvements in efficiency, size, performance and reliability.
Key applications include electric vehicles, electric aircraft  and other
e-mobility solutions, solar inverters, wind turbines, UPS, storage and motor
drives. Pre-SwitchT technology increases EV range, reduces battery size,
shrinks power converter size and cost, while minimizing cooling
requirements. Pre-Switch was founded by industry experts in power
semiconductors, power systems, test, robotics, and artificial intelligence.
Pre-Switch technology is patent pending globally.

Pre-SwitchR, the Pre-Switch logo and other trademarks or service names are
the trademarks of Pre-Switch, Inc.