US 12,278,484 B2
Bypass seamless switching apparatus and method thereof
Po-Li Chen, Hsinchu (TW); and Shu-Syuan Huang, Hsinchu (TW)
Assigned to Industrial Technology Research Institute, Hsinchu (TW)
Filed by Industrial Technology Research Institute, Hsinchu (TW)
Filed on Jul. 6, 2023, as Appl. No. 18/347,914.
Claims priority of application No. 111135384 (TW), filed on Sep. 19, 2022; and application No. 112115218 (TW), filed on Apr. 24, 2023.
Prior Publication US 2024/0097435 A1, Mar. 21, 2024
Int. Cl. H02H 9/04 (2006.01)
CPC H02H 9/04 (2013.01) 20 Claims
OG exemplary drawing
 
1. A bypass seamless switching apparatus, comprising:
a controller; and
a bypass circuit electrically connected to the controller and having a first driving power supply, a first relay, a second relay and a bypass switch module, wherein the first driving power supply is electrically connected to the first relay and the bypass switch module respectively, and the second relay is electrically connected to the bypass switch module, so that the controller sends a first control signal to control or switch a switch of the first relay to on state or off state, the controller sends a second control signal to control or switch a switch of the second relay to on state or off state, and the controller sends a switch signal to control or switch a switch of the bypass switch module to on state or off state;
wherein the first driving power supply of the bypass circuit provides a driving signal to the bypass switch module to maintain or switch the switch of the bypass switch module to on state when the controller is in a failure mode or disconnects a connection relation/connection line between the controller and the bypass circuit, so that the bypass switch module is in a short-circuit state or a short-circuit protection state, and a bypass side voltage of the bypass switch module is equal to or close to zero voltage to turn on or execute a bypass function or a bypass seamless switching function of the bypass switch module.