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Control method and apparatus to reduce current through DC capacitor linking two static converters
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Hybrid tap-changing transformer with full range of control and high resolution
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Drive and power supply with phase shifted carriers
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Modular multi-level adjustable supply with parallel connected active inputs
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Modular multi-level adjustable supply with series connected active inputs
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Four-quadrant AC-AC drive and method
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Control method and apparatus for insufficient input voltage in an AC drive
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Apparatus and method to generate braking torque in an AC drive
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Variable output three-phase transformer
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Multiphase power converter
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Multiphase power supply with plural series connected cells and failed cell bypass
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Apparatus and method to reduce common mode voltage from current source drives
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Autotransformer
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Arc furnace control system
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Adjustable voltage power supply
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Multiphase alternating current regulation system for transformer-coupled loads
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Electric arc furnace control
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Control system for electrostatic precipitator power supply
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