RESONANCE BRIDGE VOLTAGE CONVERTER Russian patent published in 2016 - IPC H02M3/337 

FIELD: electricity.

SUBSTANCE: invention relates to power conversion equipment and is intended for conversion and control of energy consumed from DC source, and transmission of energy conversion of its receiver using transformer coupling between circuits of power source and receiver. Device is a resonant bridge voltage converter. It contains: controlled switches with inverse conductivity (for example, field-effect transistors) forming a bridge circuit; resonance LC-circuit, made in the form of windings of throttle and capacitor, which are connected in series with each other; power transformer with primary and secondary windings; power rectifier of the secondary winding; capacitor of output filter. In voltage converter of resonance type: input circuit of bridge circuit formed by controlled switches with inverse conductivity is connected to power supply busbars; load output circuit of said bridge circuit is two-terminal element, formed by resonant LC-circuit and primary winding of power transformer, which are connected in series with each other; secondary winding of power transformer via the power rectifier is connected to outputs of capacitor of output filter. Proposed new features of the voltage converter of resonance type are: use of the device additional transformer with primary and secondary windings, as well as additional Rectifier; inclusion of additional primary winding of transformer parallel to capacitor resonance LC-chain; connection of additional secondary winding of transformer through an additional rectifier to outputs of capacitor of output filter.

EFFECT: high reliability of the voltage converter of resonance type based on restrictions on any previously selected level of energy accumulated in elements of resonant LC-chain; in version of the device energy transfer to the load is performed several power transformers.

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