| 摘要 |
PROBLEM TO BE SOLVED: To provide an aircraft motor drive control apparatus which can attain securement of control performance and suppression of heat generation at a high level efficiently and in an well-balanced manner, can be made compact and can materialize a protective function that allows a motor to continue to operate while suppressing temperature rise even if the amount of heat generation rises due to non-steady operation.SOLUTION: An inverter 23 and a control unit 24 that has a command signal processing unit 25 and a PWM frequency control unit 29 and performs pulse width modulation control are provided. When the command signal processing unit 25 receives a first PWM frequency command signal, the command signal processing unit 25 outputs a low PWM frequency command signal such that synchronous or asynchronous PWM control is performed at a PWM frequency in a predetermined frequency range. The command signal processing unit outputs a high PWM frequency command signal such that synchronous or asynchronous PWM control is performed at a higher frequency than the above frequency when the command signal processing unit receives a second PWM frequency command signal and until a predetermined time elapses from this signal reception. The command signal processing unit outputs a low PWM frequency command signal when the command signal processing unit receives the second PWM frequency command signal and after a predetermined time elapses from this signal reception. |
