Electricity: motive power systems – Braking – Dynamic braking
Reexamination Certificate
2008-05-20
2008-05-20
Ro, Bentsu (Department: 2837)
Electricity: motive power systems
Braking
Dynamic braking
C318S375000, C318S376000
Reexamination Certificate
active
07375483
ABSTRACT:
In the present invention, several polyphase devices are connected together: an inverter, and electrical rotating machine, and a resistive load or braking resistor. The purpose of the resistive load is to dissipate excess electrical power which may be produced when the inverter acts to slow down the rotating machine, causing the rotating machine to act as a generator. In common art, this resistive load is a single DC resistor coupled to the DC link of the inverter via a separate resistor control transistor. In the present invention, the resistive load is a mesh connected array of resistors, and is electrically connected to the same inverter output terminals that the rotating machine is connected to. When it is desired that the resistors absorb energy, for example from a braking operation, then the harmonic content of the inverter output is adjusted, thus placing voltage differences across the resistor array and causing current to flow in the resistors.
REFERENCES:
patent: 382279 (1888-05-01), Tesla
patent: 3688171 (1972-08-01), Salihi et al.
patent: 3808481 (1974-04-01), Rippel
patent: 3815002 (1974-06-01), Clemente et al.
patent: 3821619 (1974-06-01), Hoffman
patent: 3876923 (1975-04-01), Humphrey et al.
patent: 3930190 (1975-12-01), Liska
patent: 3931553 (1976-01-01), Stich et al.
patent: 3991352 (1976-11-01), Fry et al.
patent: 4266175 (1981-05-01), Braun et al.
patent: 4292575 (1981-09-01), Kuhnlein et al.
patent: 4328454 (1982-05-01), Okuyama et al.
patent: 4484115 (1984-11-01), Takahashi
patent: 4607204 (1986-08-01), Setoya
patent: 4611157 (1986-09-01), Miller et al.
patent: 4678063 (1987-07-01), Kitaoka et al.
patent: 4713594 (1987-12-01), Bose et al.
patent: 4730150 (1988-03-01), Lee et al.
patent: 4736147 (1988-04-01), Shizhang
patent: 4751448 (1988-06-01), Auinger
patent: 4755732 (1988-07-01), Ando
patent: 4900965 (1990-02-01), Fisher
patent: 4996470 (1991-02-01), Rowan et al.
patent: 5053689 (1991-10-01), Woodson et al.
patent: 5068587 (1991-11-01), Nakamura et al.
patent: 5075610 (1991-12-01), Harris
patent: 5420491 (1995-05-01), Kanzaki et al.
patent: 5449962 (1995-09-01), Shichijyo et al.
patent: 5488280 (1996-01-01), Langreck
patent: 5614799 (1997-03-01), Anderson et al.
patent: 5686770 (1997-11-01), Naito
patent: 5703457 (1997-12-01), Davis
patent: 5977679 (1999-11-01), Miller et al.
patent: 6054837 (2000-04-01), Edelson
patent: 6064172 (2000-05-01), Kuznetsov
patent: 6101109 (2000-08-01), Duba et al.
patent: 6153953 (2000-11-01), Isozaki et al.
patent: 6175272 (2001-01-01), Takita
patent: 6351095 (2002-02-01), Edelson
patent: 6373160 (2002-04-01), Schrodl
patent: 6426605 (2002-07-01), Toliyat et al.
patent: 6657334 (2003-12-01), Edelson
patent: 6768279 (2004-07-01), Skinner et al.
patent: 6812661 (2004-11-01), Maslov
patent: 6831430 (2004-12-01), Edelson
patent: 6838791 (2005-01-01), Edelson
patent: 6892439 (2005-05-01), Neal et al.
patent: 6922037 (2005-07-01), Edelson
patent: 7116019 (2006-10-01), Edelson
patent: 7170247 (2007-01-01), Yoshinaga et al.
patent: 2002/0041168 (2002-04-01), Mann et al.
patent: 20/03639 (1971-08-01), None
patent: WO-00/51229 (2000-08-01), None
patent: WO-06/002207 (2006-01-01), None
patent: WO-06/065988 (2006-06-01), None
Borealis Technical Limited
Ro Bentsu
LandOfFree
Mesh connected brake array for electrical rotating machines does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Mesh connected brake array for electrical rotating machines, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Mesh connected brake array for electrical rotating machines will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2785400