PROTECTIVE CIRCUIT AND METHOD FOR MULTI-LEVEL CONVERTER
First Claim
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1. A protective circuit for a multi-level converter including a DC link capacitor bank, the protective circuit comprising:
- an energy absorbing element;
switches, wherein at least two of the switches each couple the energy absorbing element to the capacitor bank;
a controller configured to provide control signals to the switches to selectively actuate the switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter.
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Abstract
A protective circuit for a multi-level converter including a DC link capacitor bank includes: an energy absorbing element; switches, wherein at least two of the switches each couple the energy absorbing element to the capacitor bank; and a controller configured to provide control signals to the switches to selectively actuate the switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter.
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Citations
20 Claims
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1. A protective circuit for a multi-level converter including a DC link capacitor bank, the protective circuit comprising:
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an energy absorbing element; switches, wherein at least two of the switches each couple the energy absorbing element to the capacitor bank; a controller configured to provide control signals to the switches to selectively actuate the switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 20)
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12. A power generation system comprising:
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a multi-level converter, wherein the multi-level converter comprises a DC link capacitor bank; and a protective circuit, wherein protective circuit comprises; an energy absorbing element; switches, wherein at least two of the switches each couple the energy absorbing element to the capacitor bank; a controller configured to provide control signals to the switches to selectively actuate the switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A method for providing energy dissipation control and voltage balance control for a multi-level converter including a DC link capacitor bank, an energy absorbing element, and protective switches, wherein at least two of the protective switches each couple the energy absorbing element to the capacitor bank, the method comprising:
providing control signals to the protective switches to selectively actuate the protective switches to enable control of energy dissipation and to enable control of voltage balance on the capacitor bank of the multi-level converter. - View Dependent Claims (19)
Specification