25-05-2017 дата публикации
Номер: US20170144551A1
Принадлежит:
A track-bound vehicle converter comprises a block-wave generator () configured to be connected to a direct voltage source () and connected to a series resonance link (), or to an inductive link, for providing the input of a direct converter () with semi sinusoidal current pulses. The direct converter has at least one phase leg (-) having on one hand one switch (-) connected to the link () and able to block voltages in both directions thereacross and conduct current in both directions therethrough and on the other a capacitor (-) connected in series therewith. The voltage across the capacitor (-) of the direct converter is used to provide a converter output with an alternating voltage. 118-. (canceled)19. A track-bound vehicle converter for conversion between DC and AC , comprising:{'b': '38', 'a transformer (),'}{'b': 20', '37', '38', '21', '26', '29, 'a block wave generator () coupled to a primary winding () of the transformer (), configured to be connected to a direct voltage source () and having current valves (-),'}{'b': 39', '26', '29', '26', '29', '32', '33', '20', '38, 'a first control unit () connected to said current valves (-) for controlling said current valves (-) and generating block voltage pulses being alternatively positive and negative on an output (, ) of said generator () to said transformer (),'}{'b': 34', '35', '36', '32', '33', '20', '34, 'a series resonance link () having at least one first capacitor () or an inductive link, and at least one inductance () connected by a first end thereof to the output (, ) of the generator () for generating said block voltage pulses including semi sinusoidal current pulses, or triangular pulses in case of said inductive link (A, B) on a second end of said link (),'}{'b': 41', '40', '38', '42', '44', '70', '71', '45', '47', '48', '50, 'a direct converter () coupled to a secondary winding () of said transformer () and comprising at least one phase leg (-, , ) having one switch (-) for blocking voltages in both ...
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