Knowledge

FOC (Field Oriented Control) is an advanced motor control technology for brushless motors. By precisely controlling torque and magnetic field components, FOC delivers low noise, high efficiency, reduced heat generation, and extremely smooth power output. In underwater propulsion systems—especially for ROVs, AUVs, USVs, and other professional underwater platforms where stability and reliability are critical—FOC control is rapidly becoming the mainstream solution. When combined with APISQUEEN Beluga 24V 30A / 24V 50A FOC ESCs and the APISQUEEN 24V U92 Pro Underwater Thruster, users can experience significantly improved low-speed control, acoustic performance, and overall energy efficiency in real-world underwater applications. 1. How...

In recent years, an increasing number of universities worldwide have invested in the independent research and development of ROVs (Return-on-Vehicles). From engineering and marine colleges to laboratory teams, various universities are establishing ROV projects for marine exploration, scientific research, technical teaching, and competitions. So, why are universities increasingly inclined to build their own ROVs instead of purchasing off-the-shelf equipment? This article breaks down the reasons in detail and includes a recommendation of suitable thruster models for university laboratories at the end. I. Why are universities starting to develop their own ROVs? 1. Lower R&D costs and greater controllability through self-developmentIn...

Why is thrust selection important? Higher thrust doesn't necessarily mean better performance.Appropriate thrust should be matched to the ship's weight, speed requirements, operating environment, and battery capacity. Too little thrust → "Slow to move, drifts in wind, difficult against currents"Too much thrust → "High power consumption, short range, difficult to control, wasteful costs" Choosing the right thrust is choosing the balance between power and efficiency. 1.How to quickly estimate thrust requirements? Empirical guidelines: Smooth cruising: 25–30 kg boat weight ≈ 1 kg thrust Upstream, high speed: 20 kg boat weight ≈ 1 kg thrust Examples: 150 kg kayak → 5–8 kg...

Author: APISQUEEN Focusing on lightweight electric propulsion system solutions for water sports such as kayaks, inflatable fishing boats, and paddleboards. 1. Why is an electric propulsion device needed when using a kayak for fishing? For many anglers, kayaks are a quiet, lightweight, and flexible fishing platform. However, in practice, you might encounter these problems: paddling against the wind is exhausting, and getting back to shore can be agonizing; fast river currents make precise positioning difficult; and after a long fishing session, your stamina noticeably declines. That's where a small electric propeller can completely transform the fishing experience. It allows you...

— From Structure to Application: Choosing the Most Suitable Propulsion System In surface and underwater Thruster systems, pump-jet Thruster has become the core power choice for many devices due to its high thrust, low noise, and excellent debris-proof performance. However, in practical applications, different users may hesitate between modular and integrated structures. They each have their own characteristics in terms of structure, installation method, and applicable scenarios. Below, we will conduct an in-depth comparison of the two solutions from the perspectives of installation, heat dissipation, maintenance, and applicable scenarios. I. Split-type pump-jet propulsion unit Model: APISQUEEN BP150 15KW Split TypePower:...