Hydraulic couplings are core transmission components in power generation, metallurgy, and heavy-duty equipment. Traditional coupling test benches have long faced industry-wide challenges such as high energy consumption, insufficient control accuracy, and incomplete operating condition coverage. Nancal Electric supplied a four-quadrant medium voltage drive for this project, adopting a dual-motor back-to-back closed-loop energy recovery architecture. Grid-side fully controlled IGBT rectification enables bidirectional energy flow, meeting the stringent requirements of complex testing on high-power hydraulic couplings for wide speed range, high torque, and high-precision loading. Since commissioning, the project has completed type tests for nuclear power hydraulic couplings with significant energy-saving results, providing an outstanding example for the localization and upgrade of large transmission component test benches in China.
IndustryTest Bench-Wind TunnelObjetciveThere are totally seven units of compressors and two bus bars at site,3*1000kW motors are on busbar I, 4*1300kW motors are on busbar II.
2m×1.5m Acoustic Wind Tunnel Test Bench Project of Aerodynamic Research InstituteIndustryTest Bench-Wind TunnelObjective2m×1.5m Acoustic Wind Tunnel Test Bench Project of Aerodynamic Research InstituteThe rated voltage of compressor: 6kVRated power：1550kWInput voltage: 10kVSolutionBase on the acoust