Control for producing a low magnitude voltage at the output of a

Details Control for producing a low magnitude voltage at the output of a Control for producing a low magnitude voltage at the output of a

1988-12-16

1989-10-17

Wong, Peter S.

Electric power conversion systems

Current conversion

With means to introduce or eliminate frequency components

363 42, 363 98, 363 56, 363132, H02M 144

Patent

active

048751480

ABSTRACT:
At times, it may be necessary to operate switches of a PWM inverter to provide a low output voltage. However, in order to produce such a low voltage, it may be necessary to operate the switches near their minimum on time limit, which can in turn lead to damage or destruction of the switches. In order to overcome this problem, a control for an inverter which produces an output voltage having two levels wherein the inverter includes first and second switches coupled to an inverter output produces first and second switch control signals each having alternating switch on and switch off portions wherein each switch on portion is of a duration in excess of the minimum on time limit of the switches. The first and second switches are operated in accordance with the first and second switch control signals, respectively, to produce the output voltage wherein the switches are operated in a particular switch state for a duration less than the minimum on time limit of the switches to cause the output voltage to assume one of the levels during such time. Inasmuch as the switches are operated for periods of time in excess of the minimum on time limit, the risk of damage to or destruction of the switches is minimized.

REFERENCES:
patent: 4245290 (1981-01-01), Lipman
patent: 4318167 (1982-03-01), ngquist
patent: 4364109 (1982-12-01), Okado et al.
patent: 4533836 (1985-08-01), Carpenter et al.
patent: 4559593 (1985-12-01), Glennon
patent: 4617675 (1986-10-01), Ashikaga et al.

Affiliated with

Also associated with

Rating

Control for producing a low magnitude voltage at the output of a does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Control for producing a low magnitude voltage at the output of a, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control for producing a low magnitude voltage at the output of a will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1747230