Switching amplifirer and method for operating same
AssigneeGeneral Electric Company
InventorsRuxi Wang, Juan Sabate, Song Chi, Ying Mei
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Abstract
A method is used for operating a switching amplifier, the switching amplifier includes a plurality of cascade elements. The method includes: coupling the cascade elements in series between two terminals of a load; providing two leg circuits each comprised of switches in each of the cascade elements; and controlling all of the switches comprised in the switching amplifier using space vector modulation (SVM), such that a change of a common mode (CM) voltage generated by the switching amplifier is in a predetermined range.
Claims20
A switching amplifier, comprising:
- a plurality n of cascade elements coupled in series between two terminals of a load, each of the cascade elements being substantially identical;
- each of the cascade elements including two leg circuits each comprised of switches;
- and
- a control device coupled to the respective switches in the respective leg circuits in the respective cascade elements;
- wherein the control device is configured to control all of the switches using space vector modulation (SVM), such that a change of a common mode (CM) voltage generated by the switching amplifier is in a predetermined range.
A method for operating a switching amplifier, the switching amplifier comprising a plurality n of cascade elements, the method comprising:
- coupling the cascade elements in series between two terminals of a load;
- providing two leg circuits in each of the cascade elements and each comprised of switches;
- and
- controlling all of the switches comprised in the switching amplifier using space vector modulation (SVM), such that a change of a common mode (CM) voltage generated by the switching amplifier is in a predetermined range.
A gradient amplifier, comprising:
- a plurality n of cascade elements coupled in series between two terminals of a gradient coil, each of the cascade elements being substantially identical;
- each of the cascade elements including two leg circuits each comprised of switches;
- and
- a control device coupled to the respective switches in the respective leg circuits in the respective cascade elements;
- wherein the control device is configured to control all of the switches using space vector modulation (SVM), such that a change of a common mode (CM) voltage generated by the gradient amplifier is in a predetermined range.
Dependencies are inferred from the claim text.