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Magna-Power rilascia l'alimentatore DC programmabile della serie ML da 500 kW e 1000 kW, scalabile fino a 10 MW

luglio 11, 2024 • Flemington, NJ USA

Magna-Power Electronics, a leading manufacturer of programmable DC power supplies and electronic loads located in Flemington, New Jersey, released its new 500 kW and 1 MW ML Series water-cooled programmable DC power supply. The ML Series builds on decades of high-power innovation, combining Magna-Power’s signature robust current-fed power processing topology with a state-of-the-art water-cooled design to achieve a nearly fourfold increase in power density compared to Magna-Power’s air-cooled high-power solutions.

The new ML Series spans 38 models at 500 kW and 1 MW power levels, with voltage ratings as high as 6000 Vdc (floating) and current ratings as high as 5000 Adc. Power levels up to 10 MW are achieved using multiple products configured for high-performance master-slave parallel operation, wherein the master directly controls the gate drivers of slave units. The master-slave technique ensures a single control loop in the system and consistent performance as the system scales.

The ML Series uses 250 kW power stages. When compared to alternative solutions that parallel many smaller modules, these larger power stages provide significantly reduced design and integration complexity, parts count, switching devices (and potential points of failure), all while offering a substantially lower cost point. In addition, the ML Series incorporates Magna-Power’s harmonic neutralizer technology, which are specially wound magnetic components designed to passively cancel strings of harmonics to lower total harmonic distortion and increase power factor. 500 kW ML Series models incorporate a 12-pulse harmonic neutralizer, while 1000 kW ML Series models incorporate a 24-pulse harmonic neutralizer.

With the scalable air-cooled 150 kW and 250 kW MT Series, Magna-Power has offered megawatt-scale programmable DC power supply solutions for decades; however, key applications have been driving demand for even higher power with a significantly reduced physical size, including electrolysis and fuel cells, powering radar systems, electrification across all modes of transportation, and aerospace.

A Standard Commands for Programmable Instrumentation (SCPI) command set is supported for control from virtually any programming language, including Python. In addition, an IVI driver is included for the Visual Studio programming environment along with a dedicated National Instruments LabVIEW™ and LabWindows™ driver. The ML Series comes with a serial interface with an optional LXI TCP/IP Ethernet (+LXI) interface. Additional options include:

  • High Isolation Output (+ISO): Expands the output isolation to allow floating or series operation beyond the standard ±1500 Vdc rating
  • Integrated Blocking Diode (+BD): Provides an internally heatsinked protection diode, designed specifically for battery and capacitor charging applications
  • High Slew Rate Output (+HS): Provides high-speed programmed voltage and current changes

Standard protection features on the ML Series DC power supplies include a dedicated interlock emergency stop input, programmable over voltage trip and over current trip settings, thermal protection, fuse fault, AC line fault, and analog input programming line fault. In addition, when in standby or fault condition, a 3-phase contactor provides a mechanical break between the power supply’s power processing circuit and the AC mains, providing the user with confidence in safe operating conditions.

The ML Series is manufactured by Magna-Power in Flemington, New Jersey, at its vertically integrated purpose-built factory. Key manufacturing and facility developments were required to support the introduction of the ML Series. Each power electronics stage is mounted on a dedicated high-heat-transfer aluminum chill plate with press-fit copper tubes, ensuring manufacturability and serviceability. These stages slide into the rack enclosure on rails, secured and interconnected with a wire harness. Magnetic components are wound with chill plates around the transformer core, while a precisely tuned water distribution manifold ensures adequate flow to each stage. An integrated solenoid prevents water flow until internal temperatures reach a set value to minimize condensation. Magna-Power developed all-new reconfigurable switched resistance water-cooled loads, with capabilities up to 10 kV and 1 MW+, to support testing and burn-in of the company’s wide array of product ratings. Installation of a new 1 MW cooling tower with associated cooling loops is currently underway to provide closed-loop chilled water for testing needs.

The ML Series is now available directly from Magna-Power. Contact Magna-Power for more information.

About Magna-Power Electronics

Magna-Power Electronics is a leading manufacturer of high-quality programmable DC power supplies and electronic loads. With a commitment to innovation and excellence, Magna-Power has been serving a diverse range of industries since 1981. The company's products are renowned for their reliability, precision, and cutting-edge technology, making them the trusted choice of engineers, researchers, and professionals worldwide. Visit to explore the complete product lineup and discover how Magna-Power Electronics can power your innovation.

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