Abstract: In a mobile system for pipe rehabilitation, a tractor moves a motorized electrical cutter inside a pipe. The cutter is used to remove a blockage from a branch conduit connected to the main pipe. A power management system powers the mobile system, including the cutter, from a direct current power source with an input current having a voltage less than 60V. The power management system powers the electrical cutter by discharging current from the supercapacitor module to the cutter. Power to other components is provided without discharge from the supercapacitor module and is not interrupted by supercapacitor discharge to the cutter. The power management system can include a housing for the supercapacitor module with a first connector at one end for connecting to an umbilical cord and a second connector an opposite end for connecting to the tractor.

Abstract: In a mobile system for pipe rehabilitation, a tractor moves a motorized electrical cutter inside a pipe. The cutter is used to remove a blockage from a branch conduit connected to the main pipe. A power management system powers the mobile system, including the cutter, from a direct current power source with an input current having a voltage less than 60V. The power management system powers the electrical cutter by discharging current from the supercapacitor module to the cutter. Power to other components is provided without discharge from the supercapacitor module and is not interrupted by supercapacitor discharge to the cutter. The power management system can include a housing for the supercapacitor module with a first connector at one end for connecting to an umbilical cord and a second connector an opposite end for connecting to the tractor.