Abstract:
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.
Abstract:
An arc detection apparatus (10) includes an arc detection circuit (102), a current transforming unit (128), a current input wire (108) and a current output wire (110). A power supply apparatus (20) sends an input current (Iin_a) to an electronic apparatus (30) through the current input wire (108), and the electronic apparatus (30) sends back an output current (Iin_b) to the power supply apparatus (20) through the current output wire (110), so that the current transforming unit (128) induces and generates an induced current (112). The current transforming unit (128) sends the induced current (112) to the arc detection circuit (102). The arc detection circuit (102) utilizes the induced current (112) to detect an arc.
Abstract:
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.