This certainly requires a much greater effort for control technology as well as hardware and software development by the machine manufacturer. To what extent are hydraulics manufacturers able to offer economic solutions in this area?
Dierk Peitsmeyer: With Bucher Hydraulics' FoD software, the user has no trouble generating the optimal electric motor speed. In variable speed operation, the pump is of particular importance to meet the specific requirements of mobile hydraulics. The pump is the heart of the system. Comparable to the efficiency of high-quality electric motors, it must be operable at 92 to 94 % efficiency over a wide operating range. This minimizes the need for costly battery capacity. There is a significant difference whether 5 kW or only 2.5 kW power loss is generated by the pump. The efficiency chain further enhances this effect.
At Bucher Hydraulics, we offer our AX pumps as the optimum solution. Even at high performance, the noise level is low and pleasant, as expected by end users. The AX pumps can be started at high pressure and operated at very low speed without premature and excessive wear. Due to low leakage and the high number of pistons, smooth cylinder movement can be achieved even at low speeds. This is advantageous for precise positioning or when large booms are involved. The design principle with consistent hydrostatic balance of the components makes these pumps particularly reliable.
With AX pumps and FoD software, the hydraulic systems of Bucher Hydraulics perfectly meet the requirements of electrified machines and thus make a vital contribution to the future economical and productive use of electrified machines.
Mr. Peitsmeyer, thank you very much for your detailed information on efficient, economical, and powerful mobile hydraulics for electrified working machines.