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Voltage control utilizing multiple PWM patterns

專利號
US10097090B1
公開日期
2018-10-09
申請人
International Business Machines Corporation(US NY Armonk)
發(fā)明人
Andrew Ferencz; Todd E. Takken; Paul W. Coteus; Xin Zhang
IPC分類
G05F1/00; H02M3/158; H02M1/36; H02P9/30; H02M1/08; H02M1/00
技術(shù)領(lǐng)域
voltage,steady,controller,converter,pwm,may,cyclic,pattern,in,cycle
地域: NY NY Armonk

摘要

A power-delivery system may comprise a load device and a direct-current converter configured to deliver current to the load device when the direct-current converter is in an on state. The power-deliver system may comprise a voltage-measurement system configured to measure, at a beginning of each measurement cycle in a cyclic measurement pattern, a voltage at the load device. The power-deliver system may comprise a power controller configure to receive, at the beginning of each measurement cycle, the measurement of the voltage, and to perform, at the beginning of a control cycle in a cyclic control pattern, a voltage-control decision in response to a change in the measurement of the voltage being below a voltage-change threshold. The voltage-control decision may comprise whether to switch the state of the first direct-current converter. The cyclic control pattern may operate at a first frequency, and the measurement pattern may operate at a second frequency.

說明書

FIG. 2A illustrates an example graphical representation of multiple cyclic PWM patterns, expressed as sinusoidal waves, in accordance with embodiments.

FIG. 2B illustrates an example graphical representation of multiple converters being controlled by multiple cyclic PWM patterns, in accordance with embodiments.

FIG. 3 illustrates a flowchart of an example method of controlling the voltage of a system using two voltage controllers that operate at different cyclic PWM patterns, in accordance with embodiments.

FIG. 4A illustrates an example graphical representation of multiple voltage controllers with different cyclic PWM patterns, expressed as sinusoidal waves, in accordance with embodiments.

FIG. 4B illustrates an example graphical representation of multiple converters being controlled by multiple voltage controllers, in accordance with embodiments.

FIG. 5 illustrates a structure diagram of a system in which one or more power controllers may control the voltage at a load device, in accordance with embodiments.

FIG. 6 illustrates a flowchart of an example method of controlling the voltage at a device by varying the length of the PWM cycle, in accordance with embodiments.

FIG. 7 depicts the representative major components of a computer system that may be used in accordance with embodiments.

權(quán)利要求

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