| 摘要 |
PROBLEM TO BE SOLVED: To suppress heating power of a component forming a boosting part in the case where a power supply voltage is varied, even without any large-sized component as the component.SOLUTION: A boosting part 34 boosts a rectified voltage V1 and generates a boosted voltage V2. A drive voltage output part 37 uses the boosted voltage V2 to generate drive voltages SU-SW and outputs them to a compressor motor M12. An input-side detection part 33 detects a variation range for a value of the rectified voltage V1 or a reference value in power supply variation as power supply variation information Vfl. A memory 42 stores target value associated information Inf1 in which a boosting target value Tp and the power supply variation information Vfl are associated. The boosting target value Tp is a target value of the boosted voltage V2 to be generated by the boosting part 34. On the basis of the target value associated information Inf1 and the detected power supply variation information Vfl, a determination part 43 determines the boosting target value Tp. The target value associated information Inf1 is determined on the basis of an operational range of the drive voltage output part 37. |
