DRIVE DEVICE AND METHOD FOR ROTATING ELECTRIC MACHINE, AND RAILWAY VEHICLE

To detect slippage or skidding early while stabilizing a control system even during slippage or skidding in a railway vehicle equipped with a rotating electric machine.SOLUTION: A drive device for a rotating electric machine includes a voltage output device that outputs a drive voltage to a rotating electric machine, a current detector that detects the current flowing through the rotating electric machine, and a control device that estimates and calculates the angular velocity of the rotor of the rotating electric machine. The control device calculates a compensation value that corrects a state quantity that serves as an input for estimating and calculating the angular velocity during acceleration and deceleration of the rotating electric machine in order to suppress to approximately zero a steady-state error that occurs in the state quantity, which is an input for estimating and calculating the angular velocity, and detects slippage or skidding of the drive wheels driven by the rotating electric machine when the compensation value exceeds a predetermined value.SELECTED DRAWING: Figure 1 【課題】回転電機を搭載する鉄道車両にあって、空転または滑走時においても制御系を安定化しつつ、空転または滑走を早期に検知する。【解決手段】回転電機へ駆動電圧を出力する電圧出力装置と、回転電機に流れる電流を検出する電流検出器と、回転電機の回転子の角速度を推定演算する制御装置とを備え、制御装置は、回転電機の加減速中に角速度を推定演算するための入力となる状態量に生じる定常偏差を略ゼロに抑制するために当該状態量を補正する補償値を演算し、補償値が所定値を超えた場合に回転電機により駆動される駆動輪の空転または滑走を検知する。【選択図】図１