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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)

Further, the oversampling controller may have decided, at time 414, to maintain pulse 430 past time 416 (e.g., over a 25% duty cycle, as measured from time 414). However, upon measuring the voltage at 416, the oversampling voltage controller may determine that the system is back in steady-state operations (or even that an over-voltage situation is occurring). For this reason, the oversampling controller issues a shut-off command to converter 1 at time 416. At this point, the system may return to control by the steady-state controller.

As illustrated here, the method of activating all converters to respond to a voltage change is only presented with respect to a system with multiple discrete voltage controllers. However, it is consistent with the embodiments of this disclosure that such a method could be performed in the same way utilizing a single voltage controller, as disclosed by FIG. 1, for example. Further, the method of activating all converters is presented as only performed by an oversampling controller. However, it is also consistent with the embodiments of this disclosure that such a method could be performed by a steady state controller (e.g., such as the steady-state controller operating according to pattern 404).

權(quán)利要求

1
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