Power-factor correction device for variable speed drive

Details Power-factor correction device for variable speed drive Power-factor correction device for variable speed drive

2006-11-13

2008-09-02

Ip, Paul (Department: 2837)

Electricity: motive power systems

Induction motor systems

Primary circuit control

C318S800000, C318S802000, C363S044000, C363S089000

Reexamination Certificate

active

07420351

ABSTRACT:
A variable speed drive for a three-phase electric motor, including a rectifier module supplying a rectified voltage from a single-phase alternating current network, a voltage step-up module supplying a regulated bus voltage, and an inverter module supplying a control voltage to the motor. The variable speed drive includes a hybrid power-factor correction device that drives the voltage step-up module and that includes a digital circuit including a voltage step-up module supplying a correction signal based on a measurement signal of the bus voltage and an analog circuit supplying a driver signal to the step-up module based on a measurement signal of the rectified voltage and based on the correction signal.

REFERENCES:
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Manfred Reddig, “Optimization of the input and output stages in high efficiency power suppies,” 2003 IEEE International Conference on Industrial Technology, vol. 2, Dec. 10, 2003, pp. 1190-1195, XP-002401581.
Alfio Consoli, et al., “Single Chip Integration for Motor Drive Converters With Power Factor Capability,” IEEE Transactions on Power Electronics, vol. 19, No. 6, Nov. 2004, pp. 1372-1379, XP-002401582.
Zhigan Wu, et al., “Line adaptive PAM&PWM drive for BLDCM,” IPEMC 2004, vol. 3, Aug. 14, 2004, pp. 1263-1267, XP-002401583.

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