Control method for verifying the compatibility between a variable speed drive and the input filter

The control system for verifying the compatibility between an input filter and a variable speed drive, said variable speed drive being connected to an electric power source via said input filter, said variable speed drive comprising, at input, a rectifier stage connected to said input filter, a DC power supply bus connected to said rectifier stage and receiving a DC supply voltage, and, at output, an inverter stage connected to the DC power supply bus and controlled so as to supply a variable voltage to an electric motor, said configured to apply a plurality of successive commands so as to define a plurality of operating points of the electric motor and wherein:

• for each operating point:
• means for measuring the DC voltage of the bus,
• a module for comparing the maximum variation in the amplitude of the DC voltage measured for said operating point with a threshold value,
• a module for determining a new operating point as long as said maximum variation in the amplitude of the DC voltage is lower than said threshold value,
• a module for determining an operating range comprising all of the operating points for which said maximum variation in the amplitude of the DC voltage is lower than said threshold value.