Precharge circuit having microprocessor-based firing angle contr

Details Precharge circuit having microprocessor-based firing angle contr Precharge circuit having microprocessor-based firing angle contr

1993-09-22

1996-01-09

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Serially connected batteries or cells

With discharge of cells or batteries

363 87, H02J 100, H02J 400, H02M 542

Patent

active

054831423

ABSTRACT:
A capacitor precharge circuit limits both peak DC link current and peak AC line current to any desired peak magnitude thereby providing for optimum precharge control and robust operation. The precharge circuit employs a microprocessor which implements a non-linear discontinuous current control scheme without the need for current sensors. The precharge circuit is well suited for use with an AC to DC converter having link inductor and a DC bus capacitor which requires precharging before full power is applied to the converter.

REFERENCES:
patent: 4586118 (1986-04-01), Mihalka
patent: 4816985 (1989-03-01), Tanahashi
patent: 4965860 (1990-10-01), Jochi
patent: 5142435 (1992-08-01), Baumgartner et al.

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