Innovations + Research

 
 

Investing in better performance for electric vehicles and industrial machines

 
 

Delta-Q continues to focus on delivering industry-firsts to follow up successes like the QuiQ and IC Series charging platforms. Since 1999, Delta-Q has provided numerous innovations in power conversion topologies, power factor correction and charge algorithm development. Delta-Q’s experienced engineering team merges power electronics, mechanical design and embedded software into products that enhance charging performance and machine reliability.

 

Advanced power conversion products

 

Delta-Q is continually refining its design capabilities to create smaller, more reliable power conversion technologies that translate into better electric drive vehicle and machine performance. The company was among the first globally to commercialize high-frequency power electronics for motive applications, creating high-efficiency, sealed chargers that were small and light enough to go on-board. Today, IC Series chargers set a higher threshold of reliability, while being able to integrate more deeply with other components in vehicle and machine systems.

 
 

Advanced power conversion products

Delta-Q is continually refining its design capabilities to create smaller, more reliable power conversion technologies that translate into better electric drive vehicle and machine performance. The company was among the first globally to commercialize high-frequency power electronics for motive applications, creating high-efficiency, sealed chargers that were small and light enough to go on-board. Today, IC Series chargers set a higher threshold of reliability, while being able to integrate more deeply with other components in vehicle and machine systems.

 

Power conversion efficiency

 

Power conversion efficiency is important to Delta-Q. Less waste heat coming from a charger’s components enables smaller, sealed designs that fit better in machines and last longer in difficult environments. Delta-Q operates a battery lab accredited to test products for the California Energy Commission (CEC) standards on energy efficiency. All Delta-Q chargers meet CEC standards.

 
 

Power conversion efficiency

Power conversion efficiency is important to Delta-Q. Less waste heat coming from a charger’s components enables smaller, sealed designs that fit better in machines and last longer in difficult environments. Delta-Q operates a battery lab accredited to test products for the California Energy Commission (CEC) standards on energy efficiency. All Delta-Q chargers meet CEC standards.

 

Research and academic partnerships

 

Delta-Q employs a dedicated research group to engage in power electronics development. The company partners with local universities on power electronics research projects, and has received research funds from Canadian provincial and federal technology commercialization agencies for new product development.

 
 

Research and academic partnerships

Delta-Q employs a dedicated research group to engage in power electronics development. The company partners with local universities on power electronics research projects, and has received research funds from Canadian provincial and federal technology commercialization agencies for new product development.

 
 

Journal and conference papers

 
 

Delta-Q regularly publishes technical papers at relevant power electronics and industry conference events. See the article titles below for more information. Due to publishing restrictions, full text articles must be accessed through IEEE publication databases.

 
 
  1. Overview of wireless power transfer technologies for electric vehicle battery charging

    Musavi, F., & Eberle, W. (2014). IET Power Electronics, 7(1), 60-66. https://dx.doi.org/10.1049/iet-pel.2013.0047

  2. Designing and testing battery charger systems for California's new efficiency regulations

    Botting, C., Stockton, R., Gautam, D., Edington, M., & Musavi, F. (2014). Proceedings of the 2014 IEEE Applied Power Electronics Conference and Exposition (APEC), 2690-2693. https://dx.doi.org/10.1109/apec.2014.6803684

  3. Burst mode elimination in high power LLC resonant battery charger for electric vehicles

    Shafiei, N., Ordonez, M., Craciun, M., Botting, C., & Edington, M. (2015). IEEE Transactions on Power Electronics, 31(2), 1173-1188. https://dx.doi.org/10.1109/tpel.2015.2420573

  4. Performance comparison of thermal interface materials for power electronics applications

    Gautam, D., Wager, D., Edington, M., & Musavi, F. (2014). Proceedings of the 2014 IEEE Applied Power Electronics Conference and Exposition (APEC), 3507-3511. https://dx.doi.org/10.1109/apec.2014.6803814

  5. Evaluation and efficiency comparison of front end AC-DC plug-in hybrid charger topologies

    Musavi, F., Edington, M., Eberle, W., & Dunford, W. (2012). IEEE Transactions on Smart Grid, 3(1), 413-421. https://dx.doi.org/10.1109/tsg.2011.2166413

  6. Implementing adaptive digital control on an existing LLC DC-DC resonant converter

    Lei, Y., Dunford, W., Craciun, M., & Gautam, D. (2015). Proceedings of the 2015 IEEE Workshop on Control and Modeling for Power Electronics (COMPEL), 1-8. https://dx.doi.org/10.1109/compel.2015.7236484

  7. A high-performance single-phase bridgeless interleaved PFC converter for plug-in hybrid electric vehicle battery chargers

    Musavi, F., Eberle, W., & Dunford, W. (2011). IEEE Transactions on Industry Applications, 47(4), 1833-1843. https://dx.doi.org/10.1109/tia.2011.2156753

  8. A single-stage bridgeless high efficiency ZVS hybrid-resonant off-road and neighborhood EV battery charger

    Alam, M., Eberle, W., & Musavi, F. (2014). Proceedings of the 2014 IEEE Applied Power Electronics Conference and Exposition (APEC), 3237-3242. https://dx.doi.org/10.1109/apec.2014.6803769

  9. Digital DCM detection and mixed conduction mode control for boost PFC converters

    Clark, C., Musavi, F., & Eberle, W. (2014). IEEE Transactions on Power Electronics, 29(1), 347-355. https://dx.doi.org/10.1109/tpel.2013.2252471

  10. Overview of power electronics product development cycle and fundamentals of charger design

    Musavi, F., & Gautam, D. (2013). Proceedings of the 2013 IEEE Transportation Electrification Conference and Expo (ITEC), 1-122. https://dx.doi.org/10.1109/itec.2013.6573465

 

Charging advanced lithium batteries

 

All Delta-Q chargers can safely charge lithium battery chemistries through specifically designed algorithms, or via battery management system-controlled charging processes for chargers with communication capability (e.g. CAN bus). Delta-Q offers test channels and expertise to vehicle, machine or battery manufacturers working on lithium-ion implementation into vehicles or machines.

 
 

Charging advanced lithium batteries

All Delta-Q chargers can safely charge lithium battery chemistries through specifically designed algorithms, or via battery management system-controlled charging processes for chargers with communication capability (e.g. CAN bus). Delta-Q offers test channels and expertise to vehicle, machine or battery manufacturers working on lithium-ion implementation into vehicles or machines.

 

Charge profile development

 

Super Charged Hits

 
 

Delta-Q has commercialized over 190 charge profiles for lead acid (flooded, VRLA, AGM, gel) and lithium batteries. With more than 25 test channels, Delta-Q conducts short-, medium-, and long-term testing to validate charging methodologies and application-specific adaptations to standard algorithms. Our approach is to make profiles for specific battery manufacturers and models. Achieving optimal charging performance accounts for differences in construction and electrolyte formulation. For machine OEMs and battery manufacturers, choosing Delta-Q ensures optimal machine performance and battery life.

 

Testing and validation

 

Delta-Q’s product validation methods include extensive testing for anticipating the difficult environments chargers face when deployed on-board vehicles and machines.

Testing for factors such as vibration, shock, and thermal cycling provides better certainty of a long service life for the charger. Advanced design for manufacturing methods are used to create products that minimize the possibility of introducing defects at the manufacturing stage.

 
 

Testing and validation

Delta-Q’s product validation methods include extensive testing for anticipating the difficult environments chargers face when deployed on-board vehicles and machines.

Testing for factors such as vibration, shock, and thermal cycling provides better certainty of a long service life for the charger. Advanced design for manufacturing methods are used to create products that minimize the possibility of introducing defects at the manufacturing stage.