PWM inverter control method

Details PWM inverter control method PWM inverter control method

2006-05-09

2006-05-09

Sterrett, Jeffrey (Department: 2838)

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

C363S098000

Reexamination Certificate

active

07042741

ABSTRACT:
It is an object of the invention to provide a PWM inverter control method capable of causing a reduction in a noise and energy saving to be consistent with each other by the reduction in a noise and the limit of the number of switching operations.The invention provides a 2-level PWM inverter control method, in which switching of switching units connected in series is limited by setting the number of switching operations and a timing to output an optional voltage in order not to converge a frequency component of a noise caused by the switching and setting a lower limit to the number of switching operations in order to prevent the number of switching operations from being excessively decreased in that case when an operation frequency of an inverter is low, and increasing the number of switching operations and a set value of the timing in a constant ratio to the operation frequency and setting an upper limit to the number of switching operations in such a manner that the number of switching operations does not exceed a certain set value when the operation frequency of the inverter is increased.

REFERENCES:
patent: 4370702 (1983-01-01), Shuey et al.
patent: 4371824 (1983-02-01), Gritter
patent: 4825132 (1989-04-01), Gritter
patent: 5285365 (1994-02-01), Yamato et al.
patent: 6151227 (2000-11-01), Mizutani et al.
patent: 6169670 (2001-01-01), Okubo et al.
patent: 6751105 (2004-06-01), Yamanaka et al.
patent: 9-56195 (1997-02-01), None
patent: 9-182452 (1997-07-01), None
patent: 11-18488 (1999-01-01), None

Affiliated with

Also associated with

Rating

PWM inverter control method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with PWM inverter control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and PWM inverter control method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3575769