MULTIPHASE BOOST CONVERTER

• Main Author: KUSHIMA HAJIME
• Format: Patent
• Language: English; Japanese
• Published: 21.12.2022
• 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

To provide a multiphase boost converter in which the number of parts is decreased and the converter is downsized.SOLUTION: A first boost converter has a current sensor which detects an input current. A controller sets only the first boost converter or both of the first boost converter and a second boost converter to a drive converter, and controls the drive converter in such a manner that the difference between the input current and a target input current becomes small. In addition, the controller sets the target input current so as to be the same in the drive converter, and estimates an input current of the second boost converter based on an input current of the first boost converter when the drive converter includes the second boost converter.SELECTED DRAWING: Figure 2 【課題】部品点数の低減や装置の小型化を図る。【解決手段】第１昇圧コンバータは、入力電流を検出する電流センサを有し、制御装置は、第１、第２昇圧コンバータのうち第１昇圧コンバータだけまたは両方を駆動コンバータに設定し、駆動コンバータについて、入力電流と目標入力電流との差分が小さくなるように制御する。更に、制御装置は、駆動コンバータで同一となるように目標入力電流を設定し、駆動コンバータが第２昇圧コンバータを含むときには、第１昇圧コンバータの入力電流に基づいて第２昇圧コンバータの入力電流を推定する。【選択図】図２