Efficient motor control

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9673743
SERIAL NO

15429076

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Abstract

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An power management unit receives AC power and, via an AC-DC-AC converter, provides an AC motor signal to a three-phase induction motor. Sensors in the power management unit provide data to a digital signal processor (“DSP”). The data includes a current of the AC motor signal. The DSP generates a PWM carrier signal to modulate a voltage amplitude of the AC motor signal, thereby improving the operating efficiency of the motor. The motor terminal voltage is reduced until limit conditions are reached, such as reaching a motor rated efficiency or when the motor current fluctuates.

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Patent Owner(s)

Patent OwnerAddress
LIMITER POWER MANAGEMENT SYSTEM (PTY) LTD3 ALABASTER STREET BAAKENS VALLEY PORT ELIZABETH EASTERN CAPE 6001

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Billson, Terrence Hugh Port Elizabeth, ZA 1 6
Du, Preez Henry Sandton, ZA 1 6
Fish, Shaun Trevor Boksburg, ZA 1 6
Melrose, Sean Barry Brentwood, ZA 1 6

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