Electrically-powered hydraulic power unit EPS

for tanksfor machinesoil

Overview
The Electrohydrostatic Pump System (EPS) expands the range of electrohydrostatic components and drive systems with a modular, energy‑efficient drive solution that gives users and operators a high degree of design freedom. The EPS comprises an electrohydrostatic pump unit (EPU) and a standardized control block with a hydraulic accumulator and is supplied as a complete system without an actuator. It is easy to integrate into machine concepts for both retrofits and new designs.

System description
The EPS occupies a position between individual EPU modules and larger electrohydrostatic drive systems (EAS) in terms of scope and flexibility. Customers can tailor the system to their needs. Various motor‑pump units and power classes, alternative cooling concepts and additional safety features are available. By optimizing system peripherals, the size and power ratings of electronic components can be reduced, lowering the required supply power. In combination with an energy management system, medium‑ to long‑term energy savings can be achieved. Moog offers a range of suitable power electronics and software solutions to exploit this potential.

Features

• Modular, decentralized electrohydrostatic drive system
• Consists of an electrohydrostatic pump unit (EPU) and a standardized control block with hydraulic accumulator
• Delivered as a complete system without actuator (integration of existing actuators possible)
• Multiple motor‑pump units and power classes available
• Different cooling concepts and optional safety features
• Periphery optimization to reduce electronic power and supply requirements
• Supported by compatible power electronics and software modules

Benefits

• Flexible machine integration
• High force and power density
• Improved energy efficiency
• Reduced oil volume and lower noise emissions
• Lower total operating costs and shorter time‑to‑market
• Decentralized drive design with small footprint—often eliminates need for large central HPU and reduces piping and installation costs
• High system availability
• Optional availability of energy management systems and EAS control software modules

Resources
Catalog (product description / datasheet) available as PDF.

Characteristics / Specifications

• System designation: EPS (Electrohydrostatic Pump System)
• Main components: electrohydrostatic pump unit (EPU), standardized control block, hydraulic accumulator
• Scope of supply: complete system without actuator (customer actuators can be used)
• Modularity: various motor‑pump units and power classes
• Cooling: different cooling concepts available
• Safety features: additional safety options depending on configuration
• Integration: standardized interfaces and components for simplified integration and scaling
• Energy: suitable for intelligent energy management to reduce consumption; compatible power electronics and software solutions available
• Operational advantages: reduced electronic component size, decentralized design, lower oil requirements, reduced noise emissions
• Target applications: machine integration, retrofits and new developments, use with existing hydraulic cylinders possible