Method of operating inductively heated aerosol-generating system with multiple temperature profiles

A method of controlling an aerosol-generating system,

• the aerosol-generating system comprising
• an aerosol-generating article comprising an aerosol-forming substrate;
• and
• an aerosol-generating device comprising:
• a device cavity configured to receive the aerosol-generating article comprising the aerosol-forming substrate, the device cavity having a proximal end and a distal end, opposite the proximal end, the proximal end being substantially open and configured to receive the aerosol-generating article;
• an inductive heating arrangement configured to heat the aerosol-forming substrate of the aerosol-generating article, the inductive heating arrangement comprising:
• a first inductor coil arranged towards the proximal end of the device cavity,
• a second inductor coil arranged towards the distal end of the device cavity, and
• an inductive heating element including at least one susceptor that is heatable by penetration with a varying magnetic field to heat the aerosol-forming substrate of the aerosol-generating article;
• and
• a power supply configured to supply power to the inductive heating arrangement;
• and
• the method comprising:
• when the aerosol-generating article comprising the aerosol-forming substrate is received in the device cavity, initiating heating of the aerosol-forming substrate by driving a first varying current in the first inductor coil such that the first inductor coil generates a first varying magnetic field that heats a first portion of the inductive heating element, and controlling the first varying current such that the temperature of the first portion of the inductive heating element increases from an initial temperature in accordance with a first operating temperature profile;
• and
• subsequently driving a second varying current in the second inductor coil such that the second inductor coil generates a second varying magnetic field that heats a second portion of the inductive beating element, and controlling the second varying current such that the temperature of the second portion of the inductive heating element increases from an initial temperature in accordance with a second operating temperature profile,
• wherein:
• the second operating temperature profile is different from the first operating temperature profile, and
• the first varying current and the second varying current are controlled such that:
• in a first phase, the first varying current is supplied to the first inductor coil,
• in a second phase, the second varying current is supplied to the second coil,
• in at least a portion of the first phase, the first operating temperature profile is greater than the second operating temperature profile, and
• in at least a portion of the second phase, the second operating temperature profile is greater than the first operating temperature profile, the second operating temperature profile being greater than the first operating temperature profile by no more than about 50 degrees Celsius.