AbstractThis paper presents a proposed algorithm for controlling an induction motor pump set powered from photovoltaic (PV) generator through a current source inverter. In particular, problems related to the efficiency of induction motors have received much attention due to their wide applications. An improved constant flux control system is used to optimize the motor efficiency by reducing the air‐gap flux. From an other interesting point of view, the reduced air‐gap flux may result in undesirable dynamic responses. In order to overcome this drawback, an accident stability region is designed using the eigenvalues‐zero pattern with the necessary linearization procedures.