2 results about "Boost chopper" patented technology

When a secondary battery is charged, a switch is closed, and a first boost chopper circuit, a second boost chopper circuit, and a totem-pole bridgeless power factor correction circuit, which are coupled in parallel to each other, are driven to operate in an interleaving manner, and in this state, an alternating-current voltage inputted from an AC input terminal is converted into a direct current, and the direct current is outputted from a direct current output terminal. When alternating current is outputted using an AC output terminal, the switch is closed, and the totem-pole bridgeless PFC circuit is used, and in this state, a DC voltage from the secondary battery is converted into an alternating current, and the alternating current is outputted from the AC output terminal.

This invention provides a method and apparatus for constructing a short-scale transient simulation model of a computing center, relating to the field of computing center modeling technology. The method includes: modeling the power grid side using a three-phase AC voltage source; modeling the uninterruptible power supply using a series-connected three-phase full-bridge rectifier circuit, a boost chopper circuit, and a three-phase bridge PWM inverter circuit, wherein the boost chopper circuit has energy storage elements for powering the computing center during grid-side faults; modeling the cooling module using a constant torque load; modeling the server using CPU power consumption, GPU power consumption, total server power consumption, and server variable impedance; and modeling the ZIP load using a ZIP model. This invention can more effectively describe the interaction between the computing center and the power supply system, providing a new modeling approach for the energy efficiency optimization and stable operation of computing centers.