VARIABLE-VOLTAGE STEPPING REGULATOR Russian patent published in 2008 - IPC H02M5/12 

FIELD: electrical engineering; variable-voltage regulating devices.

SUBSTANCE: proposed variable-voltage stepping regulator whose output voltage is much higher (by 1.5 times or more) than input value is designed to maintain output voltage within desired (usually as short as, for instance, ±1%) with input voltage varying within much wider range (±10%) has input and output leads, main step-down or step-up transformer or autotransformer, tap changer of this transformer primary winding, and booster transformer whose primary winding is connected through its one lead to tap changer and secondary winding is connected to first input lead; one of main-transformer primary winding leads is connected to second input lead; tap changer functions to connect booster transformer primary winding to entire primary winding of main transformer or to its part; booster transformer primary winding is inserted between first input lead and primary winding of main transformer; second lead of booster-transformer primary winding is also connected to tap changer whose switching algorithm implies connection of booster-transformer primary winding to entire main-transformer primary winding and to its part both in phase and in phase opposition with respect to input voltage, as well as its shorting out.

EFFECT: simplified design, reduced mass, size, and cost, enlarged functional capabilities of regulator.

1 cl, 2 dwg