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The Leading Independent Provider

of Power Conversion Solutions since 1963

High Power Rectifiers and Control Upgrades for Mining Groups Worldwide

Mining Thyristor & Chopper Rectifiers

Dynapower is the world’s largest independent manufacturer of mining thyristor & chopper rectifiers. With experience in power conversion since the commercialization of the thyristor, Dynapower has designs that cover all topologies. In addition to Dynapower mining thyristor & chopper rectifiers, we also maintain exclusive rights for manufacturing and service of all products designed & manufactured by Rapid Power Technologies.

Dynapower’s mining thyristor and chopper rectifiers are engineered, designed, manufactured and tested to internationally recognized standards including ANSI, IEEE, IEC, NEMA, UL, CSA, and JEC. Our design capabilities include the complete High Power Transformer Rectifier System – inclusive of fully integrated operator interfaces and control systems for a single unit or entire multi-unit SCADA network. With over 50 years of experience in high power conversion, Dynapower evaluates the impact of the rectifier system on the incoming power grid, and designs power factor correction and harmonic filtering for the application to maximize system efficiency. Using the latest rectifier technologies techniques, application engineers can recommend the optimum rectifier configuration for any battery formation project.

Dynapower also recognizes that maintaining the efficiency of your long-lasting rectifiers is crucial to the bottom line. That is why we offer digital control upgrades for any high power rectifier system – so that our metals manufacturing partners can maximize the return on their initial capital equipment investment.


US-based inhouse engineering
Inhouse US-based Manufacturing

Experience You Can Trust

We help companies create optimum mining thyristor & chopper rectifier solutions as well as provide engineering and maintenance services that fuel long lasting and mutually rewarding relationships. We work with our partner customers to understand their needs to not only to deliver on product perfection but also deliver on time – crucial to success in a highly competitive finishing market where every day counts.


With the leading up time in the industry and a dedicated team of service technicians, we provide 24/7 technical phone support and a team of Dynapower techs dispatchable at a moment’s notice.

With over 50 years in designing in building all manner of rectifiers, we have the experience and expertise you can trust.

The reliability and efficiency of our rectifiers coupled with our industry leading service make our customers more money in the long term.

We care deeply about solving the world’s most complex power conversion challenges, and providing our customers with the best solution possible.



Dynapower designs and manufacturers mining thyristor & chopper rectifiers as well as fast switching IGBT chopper rectifiers for large applications. These are available in 6, 12, 18 and 24 pulse sets with higher order combined systems available. Each multi-pulse arrangement is in an ANSI configuration that is selected for the voltage/current values of the application. The multi-pulse criteria are selected to reduce the supply side harmonic content, reduce output DC ripple, and provide improved regulation.

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Control Upgrades

Dynapower recognizes that upgrading equipment can be a costly proposition for any mining enterprise that is why we offer control upgrades to legacy rectifiers to improve their efficiency, uptime and extend the life of the rectifier itself. In addition to providing digital control upgrades to Dynapower and Rapid high power mining thyristor & chopper rectifiers, Dynapower offers system evaluations and control upgrades for all major manufacturers of high power rectifiers.

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What Our Customer Partners Say

Samsung SDI is the world leader in Li-ion battery technology, and specifically for stationary energy storage applications, and it is only fitting that we integrate our batteries with Dynapower’s leading inverter technology.

Fabrice Hudry
VP of Energy Storage Solutions
Samsung SDI

This has truly been a great experience for us here at Bosch to work with Dynapower Company. I appreciated how every member of your team was eager to help and really worked together with us to get this project to a success.

Ram Subbaraman
Senior Engineer


The assistance and technical expertise provided by Dynapower has allowed us to accelerate our internal knowledge of energy storage and get us to market faster and in a better position for future energy storage installations.

Josh Castonguay
Chief Innovation Executive
Green Mountain Power

Mining Team

Abdoulaye Diallo
Sales Manager
Peter Abele
Sr. Systems Application Sales Engineer
Ken Ziemann
Director of Engineering Power Systems



Medina Maric
High Power Electrical Systems Lead Engineer

Contact Us

We’re always interested in new projects, large or small. Please don’t hesitate to get in touch with us regarding your current or future project needs.

To contact us, please call (800) 292-6792 or send us an e-mail.

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