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VideoRay drives safe, effective underwater exploration leveraging AI and today’s newest technologies
Vicor Powering Innovation podcast discusses the proliferation of ROV applications and how VideoRay is responding to new underwater missions
Case study: Tethered Underwater ROV
Allowing an underwater ROV to perform remote inspection activities at greater depths required the tether from the ship-based power source be extended. Distributing the original design’s low voltage over the longer tether was not practical due to voltage drops. Moving to a high-voltage 700V low-loss tether, however, required conversion to a lower SELV voltage onboard the ROV. This typically requires a custom converter that takes up space and adds weight, not feasible in an ROV that needs to be able to carry increased payloads. The key goals were:
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Vicor high-efficiency and high-performance power modules enable inspection UAVs to minimize size and weight to maximize the sensor payload required to perform the actual inspection. With enough power and high efficiency, they allow for an agile UAV with increased flight time, even in harsh environments.
High-voltage tether reduced the supply current, and thus losses for a given cross-section of copper conductor, allowing for a thinner, longer tether
Reduced footprint of 1.5kW solution to just 41cm2
Low noise conversion topology prevented interference with communications over the tether
The power delivery network: The BCM isolated and stepped-down the high tether voltage input to a nominal 48V, a factor of 1/16. Output was 1.5kW in a footprint of just 39cm2. The BCM provided enough power to drive 48V motors, thrusters and control electronics. Its high efficiency simplified the cooling within the vehicle. ZVS Buck regulators converted the 48V SELV distribution to 5V and 3.3V to power downstream points-of-load. To analyze this power chain, go to the Vicor Whiteboard online tool.
VideoRay drives safe, effective underwater exploration leveraging AI and today’s newest technologies
Vicor Powering Innovation podcast discusses the proliferation of ROV applications and how VideoRay is responding to new underwater missions
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Ampaire社の環境に優しい空の旅
Ampaire社は、CO²排出量を削減する、環境に優しいハイブリッド電動航空機を開発しています。