Abstract: A standalone and grid-tie power inverter includes a DC-to-AC converter, an output circuit electrically connected to the DC-to-AC converter, and a control unit electrically connected to the DC-to-AC converter and the output circuit. The DC-to-AC converter converts a DC power source into an AC power output. The output circuit includes a grid-tie switch for connecting the AC power output to a grid or isolating the AC power output from the grid. The control unit instructs the DC-to-AC converter to provide the AC power output based on a command signal and a feedback signal from the DC-to-AC converter. The control unit controls the grid-tie switch to switch the standalone and grid-tie power inverter between a standalone mode and a grid-tie mode.

Abstract: Disclosed is a vehicle-used power supply system. The vehicle power supply system comprises a storage unit, a bidirectional dc/dc convertor, a dc bus, a controller and a driving module. The bidirectional dc/dc convertor is configured to boost the power stored in the storage unit to a dc bus power. The controller is configured to control the bidirectional dc/dc convertor to operate in a boost mode for driving the motor or in a buck mode for charging the storage unit. The driving module is configured to receive the dc bus power and drive the motor.

Abstract: Disclosed is a dual-source converter for a hybrid power supply. The converter includes a first power circuit, a second power circuit, an auxiliary circuit, an output circuit and a closed loop circuit. The first power circuit is electrically connected to the second power circuit in series for receiving two varied voltage sources. The auxiliary circuit is configured to achieve soft switching of all switches. The closed loop circuit is configured to control the duty cycles of the first power circuit, the second power circuit and the auxiliary circuit so as to improve the efficiency of the dual-source converter.

Abstract: A light-mixing module includes a first plate, a second plate, a first dichroic mirror, a second dichroic mirror, and a third dichroic mirror. The first dichroic mirror is disposed between the first plate and the second plate and is substantially perpendicular to the first plate and the second plate. The second dichroic mirror is disposed on a first side of the first dichroic mirror. The second dichroic mirror forms an angle with the first dichroic mirror and is substantially perpendicular to the first plate and the second plate. The third dichroic mirror is disposed on a second side of the first dichroic mirror and is substantially perpendicular to the first plate and the second plate. The third dichroic mirror is substantially parallel with the second dichroic mirror. The second dichroic mirror and the third dichroic mirror together form a fourth dichroic mirror, and at least one of the first dichroic mirror and the fourth dichroic mirror has a bevel gradient dichroic film.