Electricity: motive power systems – Induction motor systems – Primary circuit control
Reexamination Certificate
2011-08-30
2011-08-30
Benson, Walter (Department: 2837)
Electricity: motive power systems
Induction motor systems
Primary circuit control
C318S801000
Reexamination Certificate
active
08008885
ABSTRACT:
A power converter interfaces a variable voltage and variable frequency motor to a fixed voltage and fixed frequency network. A first inverter is connected to the motor stator. A dc link is connected between the first inverter and a second inverter. Each inverter includes switches. A filter is connected between the second inverter and the network. A first controller for the first inverter uses a dc link voltage demand signal indicative of a desired dc link voltage to control the first inverter switches to achieve a desired dc link voltage level. A second controller for the second inverter uses a power demand signal indicative of a power to be transferred to the dc link from the network through the second inverter, and a voltage demand signal indicative of a voltage to be achieved at the filter to control the second inverter switches to achieve desired power and voltage levels.
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Jones Rodney
Newton Christopher
Benson Walter
Converteam Technology Ltd.
Kirschstein et al.
Paul Antony M
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