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US 10,566,881 B2Granted
Motor drive system including removable bypass circuit and/or cooling features
AssigneeFranklin Electric Co., Inc.
InventorsRyan A. Lauw, Scott E. Leonard, Dalton H. Paull, Andre P. Perra
Life of this patent
Estimating the term…
Abstract
A motor control system to drive an alternating-current (AC) motor. The motor control system includes a motor drive. The motor drive may include a duct having first, second and third openings. The motor control system may include a bypass circuit to power the AC motor if the motor drive experiences a fault or to save energy.
Claims22
A motor control system to drive an alternating-current (AC) motor, the motor control system comprising:
- a motor drive including a motor drive controller configured to generate a motor voltage, the motor drive further comprising
- an enclosure;
- a power circuit;
- a heat sink;
- an air duct inside the enclosure;
- and
- a fan,
- wherein the enclosure includes an air intake,
- wherein the air duct includes a first opening adjacent to the air intake, a second opening opposite the first opening, and a top opening,
- wherein the fan is disposed between the first opening and the second opening, the heat sink is disposed between the fan and the second opening, and the power circuit is disposed between the heat sink and the second opening, and
- wherein the fan draws air through the air intake and blows the air through the air duct and the top opening to cool the power circuit.
8 more elements
A motor drive to drive an alternating-current (AC) motor, the motor drive comprising:
- a power circuit;
- a motor drive controller;
- an outer enclosure including a first air intake;
- and
- an enclosure within the outer enclosure, the enclosure including a power circuit, a heat sink, an air duct, and a fan,
- wherein the enclosure includes an air intake and the air duct includes a first opening adjacent to the air intake, a second opening opposite the first opening, and a top opening, wherein the fan is disposed between the first opening and the second opening, the heat sink is disposed between the fan and the second opening, and the power circuit is disposed between the heat sink and the second opening, and
- wherein the fan draws air through the air intake and blows the air through the air duct and the top opening to cool the power circuit.
4 more elements
A method of cooling a motor drive 22, the method comprising:
- generating a motor voltage with a power circuit;
- drawing air with a fan through an air intake of an enclosure;
- blowing the air through an air duct located inside the enclosure, wherein the air duct includes a first opening, a second opening opposite the first opening, and a top opening;
- and
- extracting heat from a power circuit with a heat sink disposed between the fan and the second opening,
- wherein the air drawn through the air intake flows through the first opening of the air duct, through the heat sink to draw heat therefrom, and through the top opening to cool the power circuit and the heat sink.
3 more elements
Dependencies are inferred from the claim text.