Delta Electronics, Inc.

Chih-Chang Li

Xin-Hung Lin

Lei-Ming Lee

Wei-Lun Hsin

A bi-directional direct current to direct current converter includes a first inductor, a first switch, a first capacitor, a middle voltage point, a second inductor, a second switch, a second capacitor, a third switch and a fourth switch. A direct current voltage supply unit provides the bi-directional direct current to direct current converter with an input direct current voltage. When the third switch is turned on, and the fourth switch is turned on, and the first switch is turned off, and the second switch is turned off, then the first inductor and the second inductor store energy. When the third switch is turned off, and the fourth switch is turned off, and the first switch is turned on, and the second switch is turned on, then the first inductor and the second inductor release energy to the first capacitor and the second capacitor.

Bi-directional direct-current-to-direct-current converter, grid-connected inverter system, and solar energy grid-connected inverter system

A controller controls a first switch, a second switch, a third switch, a fourth switch, a fifth switch and a sixth switch, so that an alternating current electric power is fed to an alternating current electric grid. Moreover, the controller firstly turns on a first route including the first switch and the second switch, and then the controller turns on a second route including the third switch and the fourth switch if the second route meets a first specific condition, and then the controller turns on a third route including the fifth switch and the sixth switch if the third route meets a second specific condition.

Inverter grid-connected system and method for implementing three-phase alternating current grid-connected transition

A non-isolated dc/ac converter for converting a dc input source into an ac output source is provided. The converter includes a dc/dc converting module and a dc/ac converting module. The dc/dc converting module includes a voltage shift circuit receiving an input voltage from the dc input source and outputting the input voltage, and a voltage boost circuit boosting an output voltage from the dc/dc converting module when the input voltage from the voltage shift circuit is insufficient for the ac output source. The dc/ac converting module receives the output voltage from the dc/dc converting module and converts the output voltage into the ac output source.

Growing community of inventors

Taoyuan County, Taiwan

Chih-Chang Li