A control of the greenhouse when it is connected to the photovoltaic generator is described in this paper. The greenhouse is modulated by differential equations while the temperature and humidity are regulated using the fuzzy logic controller. The photovoltaic system can supply maximum power for a specified voltage and output current. In addition, the fuzzy logic method is used to follow the maximum power point (MPPT) of a photovoltaic system. Our system consists of a solar module, a DC/DC converter with MPPT control, a DC/AC inverter and a three-phase induction motor. In addition, a direct torque control (DTC) of the induction machine which is utilized to control the ventilation flow rate. The state of control is displayed through the simulation results performed with Matlab / Simulink.