The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 30, 2016
Filed:
Nov. 17, 2014
Zhongshan Broad-ocean Motor Co., Ltd., Zhongshan, CN;
ZHONGSHAN BROAD-OCEAN MOTOR CO., LTD., Zhongshan, CN;
Abstract
A method for increasing rotational speed range of an ECM motor, including: 1) starting the motor and initializing parameters; 2) reading the rotor position signal from the hall sensor by the microprocessor and updating the rotor angle; 3) reading the DC bus current I and the rotational speed n of the motor; 4) inputting a target rotational speed S from an external device, acquiring the target rotational speed S by the microprocessor, calculating the rotational difference e, and utilizing a rotational speed PI regulator to output a regulating parameter V_D; 5) calculating an advance angle α=F(I, n) by the microprocessor, and calculating a real-time angle of the rotor θ=ω×t by the microprocessor; and 6) calculating a PWM signal input into the inverter circuit, and outputting a PWM chopper voltage U by the inverter circuit, where U=F(V_D, θ+α).
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile