POWER CONVERSION SYSTEM

• Main Authors: YAMATO, IKUO, TOKUNAGA, NORIKAZU, MATSUDA, YASUO, AMANO, HISAO
• Format: Patent
• Language: English
• Published: 01.09.1993
• 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

In a power conversion system, a DC voltage of a DC power supply (1) is converted into a predetermined high-frequency voltage by an inverter (2), and a high-frequency low voltage generated from the inverter (2) is converted into a high-frequency high voltage by a transformer (3). A high-frequency high voltage generated from a secondary winding of the transformer (3) is converted into a predetermined low-frequency voltage by a frequency changing circuit (4). The commutating operation of the frequency changing circuit (4) is performed by a control circuit (1000) in response to the output current of the frequency changing circuit (4) and in synchronism with the starting time of the short-circuiting prevention period of the inverter (2). As a result, the converted output of the power conversion system is prevented from decreasing.