DC POWER SUPPLY AND AIR CONDITIONER USING THE SAME

• Main Authors: UEDA KAZUHIRO, FUNAYAMA YUJI, TAMURA KENJI, SUGAWARA EIJI, TSUKII KOJI
• Format: Patent
• Language: English; Japanese
• Published: 06.08.2015
• Subjects: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC,OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWERSUPPLY SYSTEMS; CONTROL OR REGULATION THEREOF; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUTPOWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION

PROBLEM TO BE SOLVED: To provide a DC power supply which prevents the operation stop of the DC power supply while preventing the thermal destruction of a switching element.SOLUTION: The DC power supply for converting AC power into DC power includes: a DC power supply circuit including MOSFETs Q1, Q3; a temperature detection part 103 for detecting the temperature of the MOSFETs Q1, Q3; and a current detection part for detecting a current which flows through the DC power supply. When the current detected in the current detection part exceeds a predetermined value, the DC power supply suspends switching control of the MOSFETs Q1, Q3. Here, as the temperature detected by the temperature detection part is lower, the predetermined value becomes higher. 【課題】スイッチング素子の熱破壊を防止しつつ、直流電源装置の動作を止めることを防ぐ直流電源装置を提供する。【解決手段】交流電力を直流電力に変換する直流電源装置において、ＭＯＳＦＥＴＱ１，Ｑ３を有する直流電源回路と、ＭＯＳＦＥＴＱ１，Ｑ３の温度を検出する温度検出部１０３と、直流電源回路に流れる電流を検出する電流検出部とを備え、電流検出部で検出された電流が所定値を超えた場合にＭＯＳＦＥＴＱ１，Ｑ３のスイッチング制御を停止し、温度検出部で検出した温度が低いほど前記所定値は高くなる直流電源装置。【選択図】図２