Control apparatus of power inverter circuit

A control device of power inverter circuit which generates switch operating time data based on at least one detecting signal among output voltage, output current, input voltage, input current, electric switch current and electric reactor current, and generates ON/OFF control signal for power conversion switch based on the switch operating time data, comprising:

• first control part including
• first operation circuit which includes
• first A/D converter that inputs the detecting signal and performs A/D conversion and
• first operation circuit that generates first operation signal by inputting digital signal from the first A/D converter,
• second operation circuit which includes
• second A/D converter that inputs the detecting signal and performs A/D conversion and
• second operation circuit that generates second operation signal by inputting digital signal from the first A/D converter,
• switch operating time data generation part which generates the switch operating time data,
• operation management circuit which manages first control section, second control section and switch operating time data generation part,
• wherein
• (a) the first A/D converter and the second A/D converter have next relations,
• [sampling rate of the first A/D converter]
• >[sampling rate of the second A/D converter],
• [resolution of the first A/D converter]
• <[resolution of the second A/D converter],
• (b) the first operation circuit and the second operating circuit have next relations,
• [unit operating time of the first operation circuit]
• <[unit operating time of the second operation circuit]
• unit operating time:
• time required for each operating circuit generating one result of an operation
• (c) the first operation circuit inputs a digital signal from the first A/D converter and generates first operating signal,
• the second operating circuit inputs a digital signal from the second A/D converter and generates second operating signal,
• the switch operating time data generation part synthesizes the first operating signal and the second operating signal and generates the switch operating time data of the switch for power conversion.