217087 ⎘
System and method for controlling uninterruptible power supply of electrical power systems
#2Transformerless power conversion
#3Uninterruptible power supply systems and methods for communication systems
#4Uninterruptable power supply apparatus with shared electronic components
#5Transformerless power conversion
#6DC-link bus balancer
#7Uninterruptible power supply systems and methods for communication systems
#8Nonlinear control algorithm and system for a single-phase AC-AC converter with bidirectional isolated DC-DC converter
#93-level power topology
#10Three-phase uninterruptible power supply control method and apparatus, and three-phase uninterruptible power supply responsive to zero wire loss
#11Uninterrupted power supply with switchable reference
#12Power supply control
#13Transformerless power conversion
#14Online uninterruptible power supply topology
#15Uninterruptible power supply systems and methods for communication systems
#16Power conversion device with momentary voltage drop compensation
#17Uninterruptible power supply system
#18Power converter
#19Power converter
#20System and method for maintaining proper phase neutral wiring in a power system
#21UPS systems and methods using mode-dependent grounding
#22Uninterruptible power supply and DC-DC converter
#23Control method during zero-crossing operation of bridge arms in UPS
#24Regenerative voltage doubler rectifier, voltage sag/swell correction apparatus and operating methods
#25AC-AC converter with reduced inductive loss and switching loss
#263-phase high power UPS
#27Unintteruptible power supply systems and methods employing on-demand energy storage
#28Dual boost converter for UPS system
#29Uninterruptible power supply systems and methods for communications systems
#30Very high efficiency uninterruptible power supply
#31Power converter
#32Three arm rectifier and inverter circuit
#33Clamp circuit to reduce overshoot in power converters