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Voltage control utilizing multiple PWM patterns

專(zhuān)利號(hào)
US10097090B1
公開(kāi)日期
2018-10-09
申請(qǐng)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(lèi)
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(shuō)明書(shū)

At time 212 the voltage controller once again measures the voltage and identifies a voltage decrease of a magnitude (i.e., the absolute value of the change) that is above the voltage-change threshold. Thus, the voltage controller responds according to the oversampling pattern and issues a command to the second converter to pulse again, starting at time 212 (i.e., rather than responding according to the steady state pattern, which would require waiting until time 214, at which point the voltage controller could issue a command to the first converter). This second pulse by the second converter is represented by pulse 226. This ability to react quickly to a significant transient may, in this example, prevent the voltage of the system from dropping to below the operating range of the load device in the system.

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