High frequency AC voltage control

Details High frequency AC voltage control High frequency AC voltage control

1990-07-05

1991-05-21

Stephan, Steven L.

Electric power conversion systems

Current conversion

Including an a.c.-d.c.-a.c. converter

363 37, 363 95, H02M 545

Patent

active

050180584

ABSTRACT:
This voltage control apparatus produces distortionless, stabilized alternating output voltage subject to distortion. The apparatus comprises a wave form reshaping circuit connected to the voltage output for energizing a load, and an internal reference voltage generator amplitude stabilized and synchronized with the input voltage. An error detector generates error pulses which are applied to a controller to generate control pulses. The control pulses are combined with the amplified reshaped input voltage to produce the stabilized, distortionless voltage output. An overcurrent sensor applies signals to the controller to cut off the voltage output when the load draws excessive current. The reference voltage generator can be adjustable to vary the amplitude of the alternating voltage output.

REFERENCES:
patent: 4024451 (1977-05-01), Nishino et al.
patent: 4210956 (1980-07-01), Watanabe
patent: 4328454 (1982-05-01), Okuyama et al.
patent: 4816985 (1989-03-01), Tanahashi
patent: 4827151 (1989-05-01), Okado
patent: 4843246 (1989-06-01), Tanaka
patent: 4942511 (1990-07-01), Lipo et al.

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