Construction machinery worldwide emits an estimated 400 million tonnes of carbon dioxide per year, according to IDTechEx. With the scale of global construction activity set to increase significantly in the coming decades, decarbonizing heavy-duty machinery is crucial to curbing greenhouse gas emissions.
Crane manufacturer SANY is supporting these efforts and helping its customers achieve zero-emission construction sites through the electrification of its lattice- and telescopic-boom crawler cranes.
Electrifying massive, heavy machinery can be a challenge, as the bigger the machine, the more batteries are required, and thus, extra weight. To balance this extra weight, simplifying the traction and work functions is necessary.
After having previously electrified its lower capacity models with Danfoss Power Solutions’ technologies, SANY partnered with them again to develop fully electric versions of its higher capacity crawler cranes. On Sany’s smaller platforms, Danfoss supplies Editron motors and D1P pumps for its 80- to 150-tonne cranes.
Recently, Danfoss’ Editron division delivered its first eHydraulic Power Module to SANY for the electrification of a 200-tonne lattice-boom crawler crane, to power the traction and work function systems. The eHydraulic system integrates a Danfoss Editron synchronous reluctance assisted permanent magnet motor with a Danfoss variable displacement axial piston pump to maximize performance and efficiency.
Comprising an Editron PMI375-T1100 motor and D1P 260-cc pump, it delivers peak performance and maximizes hydraulic system efficiency, extending machine runtime on a single charge. The hydraulics system also includes Danfoss’ series 90 pump and PVG 128 valve.
The eHydraulic Power Module combines a synchronous reluctance assisted permanent magnet (SRPM) motor together with axial piston variable displacement technology, which results in enhanced pump efficiency with variable speed drive and the highest motor efficiency throughout the operation range on the market (~96%, said Danfoss).
SANY realized additional benefits with the Danfoss eHydraulic Power Module, including a compact package with mechanical advantages, simple installation, and high reliability.
Supplying the electric motor and hydraulic pump as an integrated package eliminates the risk of noise, vibration, and component damage that can arise when using a flexible coupling to join the components. It also simplifies and accelerates installation as there’s no need for the OEM to connect the components. CE marks and Danfoss’ global service network were also key reasons SANY chose to partner with Danfoss on the project.
“Building a solution for SANY’s high-capacity platform with the Danfoss integrated eHydraulic Power Module marks a milestone,” said Roy Chen, President, Editron division, Danfoss Power Solutions. “eHydraulics represents the future. Together with our Controls division, we have designed a system combining our D1P pump and Editron motor while tuning controls algorithms to maximize efficiency. We look forward to our continued collaboration with SANY and supporting their green journey.”
“Conventional hydraulics still plays a role in the electrification of heavy machinery, particularly machines of this size,” said Henrik Jørgensen, President, Controls division, Danfoss Power Solutions. “By integrating Danfoss’ advanced hydraulic solutions and electrification technology, we are empowering a smooth transition to more sustainable operations. Leveraging our eHydraulic solutions and our application know-how, we aspire to be the partner of choice for visionary OEMs like SANY.”
Filed Under: FAQs, Mobile Hydraulics - EV Engineering