Filter device and power converter
AssigneeMitsubishi Electric Corporation
InventorSatoshi Taira
Life of this patent
Estimating the term…
Abstract
Provided is a filter device to be connected between an AC power source (1) and a PWM converter (2), which includes a first AC reactor (3), a second AC reactor (4) that is connected between the PWM converter (2) and the first AC reactor (3), a filter capacitor (5) whose one end is connected to a connecting portion (9) between the first AC reactor (3) and the second AC reactor (4), and a housing (15) having a cooling air inlet (16) and a cooling air outlet (17) and containing the first AC reactor (3) and the second AC reactor (4), wherein the first AC reactor (3) is disposed upwind of the second AC reactor (4).
Claims20
A power converter comprising:
- a PWM converter;
- a first AC reactor to be connected to an AC power source;
- a second AC reactor connected between the PWM converter and the first AC reactor;
- a filter capacitor whose one end is connected to a connecting portion between the first AC reactor and the second AC reactor;
- and
- a housing having a cooling air inlet and a cooling air outlet and containing the first AC reactor and the second AC reactor,
- wherein the first AC reactor is disposed upwind of the second AC reactor and is smaller in size than the second AC reactor in a cross sectional view seen from upwind to downwind.
A filter device comprising:
- a first AC reactor to be connected to an AC power source;
- a second AC reactor that is connected between a PWM converter and the first AC reactor;
- a filter capacitor whose one end is connected to a connecting portion between the first AC reactor and the second AC reactor;
- a third AC reactor connected between the connecting portion and the filter capacitor;
- and
- a housing having a cooling air inlet and a cooling air outlet and containing the first AC reactor, the second AC reactor, and the third AC reactor,
- wherein both the first AC reactor and the third AC reactor are disposed upwind of the second AC reactor.
A filter device comprising:
- a first AC reactor to be connected to an AC power source;
- a second AC reactor that is connected between a PWM converter and the first AC reactor;
- a filter capacitor whose one end is connected to a connecting portion between the first AC reactor and the second AC reactor;
- and
- a housing having a cooling air inlet and a cooling air outlet and containing the first AC reactor and the second AC reactor,
- wherein the first AC reactor is disposed upwind of the second AC reactor and is smaller in size than the second AC reactor in a cross sectional view seen from upwind to downwind.
Dependencies are inferred from the claim text.