Unified constant-frequency integration control of three-phase power corrected rectifiers, active power filters, and grid-connected inverters
August 4, 2020. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAC-DC converter having saw-tooth wave generating circuit in active filter Power inverter with input line conditioning Switching-type DC power source apparatus Method for powering an electronically switched variable reluctance motor, and power supply circuit therefor High-pressure discharge lamp lighting apparatus Electric power source for equipment having power saving mode, power saving control device and image forming apparatus having the power source Patent #: 6177739 InventorsApplicationNo. 632772 filed on 08/04/2000US Classes:363/89, With transistor control means in the line circuit363/44, In rectifier systems363/47With low pass L or LC filterExaminersPrimary: Wong, Peter S.Assistant: Vu, Bao Q. Attorney, Agent or FirmInternational ClassesH02M 001/12H02M 001/14 H02M 007/68 AbstractThe unified constant-frequency integration (UCI) control method of the invention is based on one-cycle control. It employs an integrator with reset as its core component along with a few logic and linear components to control the pulse width of a three-phase rectifier, active power filter, or grid-connected inverter so that the three phase current draw from, or the current output to, the utility line is sinusoidal. The UCI control employs constant switching frequency and operates in continuous conduction mode (CCM) that is desirable for industrial applications. | |
