Power source quality management system and air conditioning apparatus

An air conditioning apparatus comprising:

• a harmonic generation unit (3, 6) from which a power-source harmonic is generated, the harmonic generation unit (3, 6) being connected to a power source (1) and supplied with a power-source electric power from the power source (1);
• a power source quality improvement unit (2, 5) that is connected in parallel with the harmonic generation unit (3, 6) with respect to the power source (1) and improves a quality of the power source (1);
• a failure determination unit (4, 42, 48, 48a) that determines a presence or absence of a failure of the power source quality improvement unit (2, 5);
• and
• an operation limiting unit (37) that limits an operation of the harmonic generation unit (3, 6) so that when the failure determination unit (4, 42, 48, 48a) determines that the power source quality improvement unit (2, 5) has failed, any one of the power-source electric power, a power-source current, and the power-source harmonic becomes less than or equal to a maximum value of a corresponding one of the power-source electric power, the power-source current, and the power-source harmonic, the maximum value being obtained when no failure has occurred in the power source quality improvement unit (2, 5).