Programmable current initilization for resonant DC link converte

Details Programmable current initilization for resonant DC link converte Programmable current initilization for resonant DC link converte

1989-09-26

1991-03-05

Shoop, Jr., William M.

Electricity: motive power systems

Induction motor systems

Primary circuit control

318799, 363 34, 363 40, 363132, H02M 7538

Patent

active

049980548

ABSTRACT:
The invention comprises a DC link resonant converter for controlling the speed of AC machines. Switch and power supply means is provided to establish a bi-directional initial current in the resonant circuit. By selecting the plurality and magnitude of the initial current, the peak voltage of the resonant link is controlled, and reliable zero crossing of the resonant voltage is assured. Current technology permits resonant frequencies in the range of 50-100 kilohertz to be utilized.

REFERENCES:
patent: 3896348 (1975-07-01), Loderer
patent: 4763059 (1988-08-01), Espelage et al.
patent: 4847747 (1989-07-01), Abbondanti
patent: 4862342 (1989-08-01), Dhyanchaud et al.

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