On output power index of magnetic levitation power supply for maglev train

Magnetic levitation power supply (MLPS) is an onboard electrical installation for electromagnetic suspension (EMS) type maglev train, which can provide the energy for suspension control systems onboard. The output power capability of magnetic levitation power supply has a significant to stability of levitation control system of EMS-type maglev train. This paper studies the output power index of MLPS. The relationship between output current and levitation gap is analyzed. Based on the principle of virtual work, the energy in magnetic levitation system is calculated, and the output power index, including maximum output power and normal output power are proposed. The analysis results are examined on the mono module maglev system.