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

    Publication: IEEE Transactions on Power Electronics (Impact Factor: 6.01). 01/2014; 29(1):347-355. DOI: 10.1109/TPEL.2013.2252471

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

    Publication: Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE. 03/2014: 3507 – 3511. DOI: 10.1109/APEC.2014.6803814.

  3. Industrial electronics for electric transportation: Current state-of-the-art and future challenges

    Publication: Industrial Electronics, IEEE Transactions on 05/2015: 62(5) 3021-3032. DOI: 10.1109/TIE.2015.2409052

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

    Publication: Power Electronics, IET. 7(1): 60.66. DOI: 10.1049/iet-pel.2013.0047.

  5. Control strategies for wide output voltage range LLC resonant DC-DC converters in battery chargers

    Publication: IEEE Transactions on Vehicular Technology 03/2014. 63(3): 1117-1125. DOI: 10.1109/TVT.2013.2283158.

  6. A hybrid resonant bridgeless AC-DC power factor correction converter for off-road and neighborhood electric vehicle battery charging

    Publication: Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE. 03/2014. 1641-1647. DOI: 10.1109/APEC.2014.6803526.

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

    Publication: Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE. 03/2014. 3237-3242. DOI: 10.1109/APEC.2014.6803769.

  8. A soft-switching bridgeless AC-DC power factor correction converter for off-road and neighborhood electric vehicle battery charging

    Applied Power Electronics Conference and Exposition (APEC), 2014 Twenty-Ninth Annual IEEE. 03/2014. 103-108. DOI: 10.1109/APEC.2014.6803295.

  9. Fourth order L3C resonant converter for wide output voltage regulation

    Publication: Applied Power Electronics Conference and Exposition (APEC), 2015 IEEE. 03/2015. 1467-1471. DOI: 10.1109/APEC.2015.7104541.

  10. Improving the regulation range of EV battery chargers With L3C2 resonant converters

    Publication: IEEE Transactions on Power Electronics. 30(6): 3166-3184. DOI: 10.1109/TPEL.2014.2336668.

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

    Publication: IEEE Transactions on Power Electronics. 31(2): 1173-1188. DOI: 10.1109/TPEL.2015.2420573.

  12. High power LLC battery charger: Wide regulation using phase-shift for recovery mode

    Energy Conversion Congress and Exposition (ECCE), 2014 IEEE. 09/2014. 2037-2042. DOI: 10.1109/ECCE.2014.6953671.

 

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.