Power conversion device, control device for power conversion device, and power conversion control method

• Main Authors: SHOYAMA MASAHITO, NISHIKAWA YUKIHIRO, SHEJIMA KOUKI
• Format: Patent
• Language: Chinese; English
• Published: 17.03.2023
• 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

This power conversion device is provided with a control unit that controls the switching operation of a switching element of an inverter unit. The control unit is configured to switch between execution of frequency modulation control and execution of phase shift control on the basis of the output from the output converter unit. Furthermore, when switching between the frequency modulation control and the phase shift control is performed, the control unit is configured so as to perform an overlap control in which the phase shift control is performed while the frequency modulation control is performed within a predetermined switching operation range. 本电力变换装置具备对逆变器部的开关元件的开关动作进行控制的控制部。控制部构成为基于来自输出转换器部的输出，在执行频率调制控制与执行移相控制之间切换。而且，控制部构成为：当在频率调制控制与移相控制之间切换的情况下，并在规定的切换动作范围内执行重叠控制，该重叠控制是在执行频率调制控制的同时执行移相控制的控制。