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TTI News
Advanced Energy’s LCM Series AC/DC Power Supplies Available from TTI Meet the Demand for AGV/AMR Battery Charging Stations
Digital control via the PMBus enables modification of the units for fast and efficient charging.
TTI, Inc. – Europe is supporting the design and development of charging stations for industrial and service mobile robots with Advanced Energy’s Artesyn™ LCM series of single-output AC-DC power supplies. These robust and reliable units are tailored for fast and efficient charging of Automated Guided Vehicles (AGV) and Autonomous Mobile Robots (AMR) batteries in charging stations.
“Battery-powered intralogistics AGVs and AMRs have a charger-to-vehicle ratio of approximately 1:3, and within these charging stations is an AC-DC power supply, like the LCM series,” said Markus Lorenz, Director, Industry Marketing, Industrial EMEA, TTI Inc. “These high-efficiency units provide a constant source voltage to the charge controller to charge the battery, which could be either in the charging station itself or integrated within the mobile robot.
"If there is no charge controller and you want the power supply to charge the battery directly, you would need to monitor the battery voltage and can adjust the LCM series power supply output voltage via its PMBus™ according to the state-of-charge (SoC) and state-of-health (SoH) outputs from the battery management system.”
Within the LCM series there are five variants, ranging from 300 Watts to 3000 Watts. They offer a typical full-load efficiency of up to 93%, thereby reducing operating costs and improving thermal performance. Many models within this series do not require derating at low-line. The single output front-end units accept operating inputs between 90Vac and 264Vac for global use, and a wider 85Vac to 264Vac input range for the LCM300 & LCM600 series.
The LCM series is available with output voltages of 12V, 15V, 24V, 36V and 48V – the LCM1500 series is offered with an additional 28V output, with 18V and 72V for the LCM3000 series. All outputs are adjustable to a percentage of their nominal value, which means that any output voltage between 9.6 and 57.6V is available to accommodate non-standard system voltages. In addition, the ability to share current allows multiple power supplies to be connected in parallel for higher power applications.
Digital control via the PMBus™ interface and GUI, enables modification of the LCM series to suit the exact needs of the charging station application. Power Factor Correction (PFC) is implemented internally, offering a typical power factor of 0.95, 0.98 or 0.99, depending on the model. An output OR-ing FET provides protection in the event that an output power source fails when LCM series units are paralleled. The units also feature overload, overvoltage and overtemperature protection as standard.
Variable ‘smart speed’ fans match the fan speed to the power supply’s cooling requirements and load current. Managing the fan in this way not only saves power, but also reduces fan wear, thus extending the unit’s life. These fan controls also keep the acoustic noise levels very low, while providing self-contained thermal management.
For more information about Advanced Energy’s LCM series available from TTI Europe.
www.ttieurope.com
