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US 9,287,768 B2Granted
Power converter and pre-charging circuit of same
AssigneeSchneider Toshiba Inverter Europe SAS
InventorsJocelyn Guyomard, Heu Vang
Life of this patent
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Abstract
A power converter configured to control an electrical load including a supply DC bus, a bus capacitor, a pre-charging circuit of the bus capacitor provided with a limiting resistor, a switched-mode power supply, and a starter assembly of the switched-mode power supply. The power converter includes a selection mechanism configured to connect the supply DC bus either, in a first state, to the starter assembly of the switched-mode power supply or, in a second state, to the bus capacitor to short circuit the limiting resistor.
Claims3
A power converter configured to control an electrical load, comprising:
- a DC power bus including a positive power line and a negative power line;
- a bus capacitor;
- a limiting resistor connected to the positive power line and to the bus capacitor, the bus capacitor being connected to the negative power line;
- a switch mode power supply connected to the positive power line and to the negative power line;
- a start-up assembly of the switch mode power supply connected to the negative power line of the DC power bus;
- selection means configured to connect the positive power line, either, in a first state, to the start-up assembly of the switch mode power supply, or, in a second state, to the bus capacitor to short-circuit the limiting resistor;
- and
- a control unit configured to control the selection means in the first state or in the second state.
5 more elements
Dependencies are inferred from the claim text.