Patent · US Active

Method to reduce electromagnetic interference in switching circuit applications

US10243500B2 · kind B2 · utility

0Cited by

5References

20Claims

0Family size

Assignee

Eaton Intelligent Power Limited · IE

Inventors

James David · Portage, US
Bharath Suda · Munich, DE
Asheesh Soni · Bonn, DE

Key dates

Filing date	Apr 20, 2016
Grant date	Mar 26, 2019
Priority date	—
Expiry date	Apr 20, 2036

Classification

Technology area (CPC H)Electricity
CPC primaryH02P2207/05
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

A method for providing electromagnetic compatibility to a motor control circuit is provided. A base pulse width modulated signal is selected to apply to a motor control circuit, and comprises a duty cycle for controlling an affiliated motor. Sensed system conditions are inputted for selecting a hopping frequency and a hopping amplitude of an electro magnetic compatibility management signal. The hopping frequency and the hopping amplitude are overlayed on to the base pulse width modulated signal to create a control pulse width modulated signal. The hopping frequency dithers the frequency of the control pulse width modulated signal. The hopping amplitude restricts the amplitude of the frequency dither.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.