Abstract: A high-pressure gas cylinder valve for vehicle includes a valve seat having a gas charging runner and a gas supplying runner. A check valve is connected in series onto the gas charging runner, and the check valve and a solenoid valve are connected in series sequentially onto the gas supplying runner in a gas flow direction. A portion of the gas supplying runner located downstream of the solenoid valve is jointly connected to a portion of the gas charging runner adjacent to a gas inlet end and supplies gas to outside through a gas inlet of the gas charging runner when the gas supplying runner supplies gas. The gas cylinder valve further includes a flow-blocking buffer structure connected in series onto the gas supplying runner and located downstream of the solenoid valve and upstream of an intersection of the gas supplying runner and the gas charging runner.

Abstract: A power electronic voltage transforming apparatus is used in a two-phase to single-phase conversion. The power electronic voltage transforming apparatus is cooperatively used with a three-phase to two-phase transformer to convert the two-phase power output from the three-phase to two-phase transformer into single-phase power. The two-phase to single-phase power electronic voltage transforming apparatus or three-phase to single-phase power electronic voltage transforming apparatus has an input cascade connection structure formed by cascading n converter modules.

Abstract: The present invention provides a power electronic voltage transforming apparatus, which relates to the fields of electrified railway traction power supply technology, the industrial electricity etc. The power electronic voltage transforming apparatus can solve the problems of dynamic control of negative-sequence current, compensation of reactive power and phase separation of traction network, and can also solve the imbalance of voltage and current caused by adding single-phase load in other industrial power applications. The two-phase to single-phase power electronic voltage transforming apparatus or three-phase to single-phase power electronic voltage transforming apparatus has an input cascade connection structure formed by cascading n converter modules.