Medium voltage power controller
First Claim
Patent Images
1. A system comprising:
- a compressor, a condenser and an evaporator in fluid communication;
the compressor, condenser and evaporator being mounted as a structure;
a motor connected to the compressor to drive the compressor, the motor being mounted on the structure, the motor being powered by a voltage greater than 600 volts; and
an enclosure comprising all components used in starting and operating the motor at variable speeds, the enclosure and components being configured for operation at voltages greater than 600 volts, the enclosure being mounted on the structure near the motor to permit electrical connections between the enclosure and the motor.
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Accused Products
Abstract
A medium voltage power controller box is mounted on a chiller unit with the other components of the chiller system. The power controller box can be positioned on the chiller system unit to permit the power controller box to be close coupled to the motor, and specifically to the main motor lead exit hub without the need for any power conduit connections between the power controller box and the motor. In addition, the power controller box also does not require any control interface and receives controls from a control panel. A short conduit connection between the control panel and the power controller box is used to provide the necessary connections between the control panel and the power controller box.
52 Citations
24 Claims
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1. A system comprising:
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a compressor, a condenser and an evaporator in fluid communication; the compressor, condenser and evaporator being mounted as a structure; a motor connected to the compressor to drive the compressor, the motor being mounted on the structure, the motor being powered by a voltage greater than 600 volts; and an enclosure comprising all components used in starting and operating the motor at variable speeds, the enclosure and components being configured for operation at voltages greater than 600 volts, the enclosure being mounted on the structure near the motor to permit electrical connections between the enclosure and the motor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system comprising:
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a compressor, a condenser and an evaporator in fluid communication, the compressor, condenser and evaporator being mounted to form an integral unit; a motor connected to the compressor to drive the compressor, the motor being mounted on the unit, the motor being powered by a voltage greater than 600 volts and less than 25,000 volts; a control panel being mounted on the unit; at least one box used in starting and operating the motor at a fixed speed or variable speed, the at least one box being mounted on the unit near the motor, the at least one box comprising; a power controller positioned in the at least one box, the power controller comprising at least one silicon controlled rectifier, gate turn off device, field effect transistor, or insulated gate bipolar transistor, the power controller being electrically connected to the motor, the power controller being configured for operation at voltages in a range between 600 volts and 25,000 volts; a disconnect switch being electrically connectable to a power source supplying a voltage greater than 600 volts and less than 25,000 volts; a first electrical switch connected between the disconnect switch and the power controller, the first electrical switch being operable to be opened and closed in response to control instructions received from the control panel, the first electrical switch being configured for operation at voltages in a range between 600 volts and 25,000 volts; and a second electrical switch being connected in parallel with the power controller between the first electrical switch and the motor to bypass the power controller after the motor is started, the second electrical switch being configured for operation at voltages in a range between 600 volts and 25,000 volts; and wherein the at least one box is mounted on the unit to permit electrical connections between the at least one box and the motor without a separate power conduit connection between the at least one box and the motor. - View Dependent Claims (17, 18, 19)
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20. A system comprising:
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a compressor, a condenser and an evaporator being integrally mounted as a unit; a motor connected to the compressor to drive the compressor, the motor being mounted on the unit; a control panel being mounted on the unit; and a variable speed drive controlled by the control panel, the variable speed drive being configured to provide voltages to the motor in a range between 600 volts and 25,000 volts to operate the motor at variable speeds, the variable speed drive being mounted on the unit near the motor; and wherein the variable speed drive is mounted on the unit to permit electrical connections between the variable speed drive and the motor without a power conduit connection between the variable speed drive and the motor. - View Dependent Claims (21, 22, 23, 24)
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Specification