Electric power conversion systems – Current conversion – With means to introduce or eliminate frequency components
Patent
1995-06-20
1996-09-03
Wong, Peter S.
Electric power conversion systems
Current conversion
With means to introduce or eliminate frequency components
363 97, 318811, H02M 7162
Patent
active
055529771
ABSTRACT:
When negative times are calculated for zero space vectors of a SVPWM controlled three phase inverter circuit, the zero vector times are set to zero, the non-zero space vector closer to a commanded space vector is preserved, and the non-zero space vector farther from the commanded space vector is truncated. Thus, control of the inverter circuit seamlessly transits from SVPWM to full six step operation. In one arrangement, for each negative calculated zero space vector time, the larger of the non-zero space vector times is set to the minimum of its calculated time and the pulse width modulation control period (TPWM), and the smaller of the calculated non-zero space vector times is set equal to TPWM less the set value of the larger of the non-zero space vector times. In another arrangement, each negative calculated zero space vector time is algebraically combined with the smaller of the non-zero space vector times. If the resulting non-zero space vector time is greater than or equal to zero, it is used together with the calculated time for the larger of the non-zero space vectors. If the resulting non-zero space vector time is less than zero, the time for the larger of the non-zero space vectors is set to TPWM and the time for the smaller of the non-zero space vectors is set to zero. For both of these arrangements, the zero space vector time is set to zero.
REFERENCES:
patent: 3792286 (1974-02-01), Meier
patent: 4267499 (1981-05-01), Kurosawa
patent: 4678248 (1987-06-01), Depenbrock
patent: 4713745 (1987-12-01), Schauder
patent: 4780657 (1988-10-01), Brown et al.
patent: 4808903 (1989-02-01), Matsui et al.
patent: 4953069 (1990-08-01), Braun et al.
patent: 5182701 (1993-01-01), Mochikawa et al.
patent: 5194797 (1993-03-01), Kahkipuro
patent: 5280419 (1994-01-01), Amler
patent: 5309349 (1994-05-01), Kwan
patent: 5355297 (1994-10-01), Kawabata et al.
patent: 5376872 (1994-12-01), Hara
patent: 5450306 (1995-09-01), Garces et al.
Broeck et al., Analysis and Realization of a Pulse Width Modulator Based on Voltage Space Vectors, Institute for Power Electronics and Electrical Drives, 1986.
Rowan et al., Operation of Naturally Sampled Current Regulators in the Transition Mode, IEEE Transactions on Industry Applications, vol. IA-23, No. 4, Jul./Aug. 1987.
Deng Doug
Xu Xingyi
Berhane Adolf
Ford Motor Company
May Roger L.
Sparschu Mark S.
Wong Peter S.
LandOfFree
Three phase inverter circuit with improved transition from SVPWM does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Three phase inverter circuit with improved transition from SVPWM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Three phase inverter circuit with improved transition from SVPWM will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1955885