Induction heating apparatus capable of avoiding unstable heating due to limitation of heating output

An induction heating apparatus comprising:

• a first inverter circuit configured to supply a high-frequency current to a first heating coil;
• a second inverter circuit configured to supply a high-frequency current to a second heating coil;
• and
• a control unit configured to control the first and second inverter circuits,
• wherein, when the control unit makes both the first and second inverter circuits operational, the control unit controls the first and second inverter circuits by duty control such that an average heating output from the first inverter circuit reaches a predetermined first target heating output, and an average heating output from the second inverter circuit reaches a predetermined second target heating output,
• wherein, when the control unit makes only the first inverter circuit operational, the control unit controls the first inverter circuit by continuous heating control such that a heating output from the first inverter circuit reaches the first target heating output,
• wherein, when the control unit makes only the second inverter circuit operational, the control unit controls the second inverter circuit by the continuous heating control such that a heating output from the second inverter circuit reaches the second target heating output, and
• wherein, when the control unit makes one of the first and second inverter circuits operational in an automatic heating mode for automatic heating control according to a predetermined heating output sequence, the control unit inhibits the first and second inverter circuits from being controlled by the duty control.