Power supply including a reconfigurable active front end converter
AssigneeMilwaukee Electric Tool Corporation
InventorMahesh M. Swamy
Life of this patent
Estimating the term…
Abstract
A portable power supply may include an internal power source and a active front-end converter connected to the internal power source. The active front-end converter includes a positive DC connector lead, a negative DC connector lead, a positive source side lead, a negative source side lead, and a plurality of switches. The active front-end converter is configured to operate as a DC-DC converter for DC input signals and an AC-DC inverter for AC input signals. The portable power supply also includes an AC source input, and a DC source input.
Claims14
A portable power supply comprising:
- an internal power source;
- an alternating-current (AC) input;
- a direct-current (DC) input;
- an AC output;
- and
- an active front-end converter including a bi-directional inverter including
- a plurality of switches connected in a bridge configuration between a first side leads and a second side leads, the bi-directional inverter configured to electrically connect to the internal power source, the AC input, the DC input, and the AC output using the first side leads and the second side leads,
- the active front-end configured to
- convert DC power received at the second side leads from the internal power source to AC power at the first side leads provided at the AC output in a first configuration;
- convert AC power received at the first side leads from the AC input to DC power at the second side leads for charging the internal power source in a second configuration;
- and
- convert DC power received at the first side leads at a first voltage level from the DC input to DC power at a second voltage for charging the internal power source in a third configuration,
- wherein the active front-end converter further comprises:
- a first inductor connected between the AC input and a contactor bridge;
- and
- a second inductor connected between the AC input and the contactor bridge, the second inductor connected in parallel with the first inductor.
An active front end converter comprising:
- an alternating-current (AC) input;
- a direct-current (DC) input;
- an AC output;
- a DC connector;
- and
- an active front-end converter including a bi-directional inverter including
- a plurality of switches connected in a bridge configuration between a first side leads and a second side leads, the bi-directional inverter configured to electrically connect to the AC input, the DC input, the AC output, and the DC connector using the first side leads and the second side leads,
- the active front-end configured to
- convert DC power received at the second side leads from the DC connector to AC power at the first side leads provided at the AC output in a first configuration;
- convert AC power received at the first side leads from the AC input to DC power at the second side leads provided at the DC connector in a second configuration;
- and
- convert DC power received at the first side leads at a first voltage level from the DC input to DC power at a second voltage provided at the DC connector in a third configuration,
- wherein the active front-end converter further comprises:
- a first inductor connected between the AC input and a contactor bridge;
- and
- a second inductor connected between the AC input and the contactor bridge, the second inductor connected in parallel with the first inductor.
Dependencies are inferred from the claim text.