Electricity: motive power systems – Switched reluctance motor commutation control
Reexamination Certificate
2008-04-22
2008-04-22
Donovan, Lincoln (Department: 2837)
Electricity: motive power systems
Switched reluctance motor commutation control
C318S811000, C318S599000, C326S027000, C326S080000, C327S108000
Reexamination Certificate
active
07362061
ABSTRACT:
A gate driver for forcing a power transistor including a gate electrode insulated with oxide film into conduction or shut-off, the gate driver includes a first current source for outputting a first current value to raise an electric potential of the gate electrode for changing shut-off state of the power transistor to conductive state; and a second current source for outputting a second current value to lower the electric potential of the gate electrode for changing the conductive state of the power transistor to the shut-off state. The first current value and the second current value are assigned based on at least one kind of current-source control information. This structure allows preparing an appropriate speed of forcing the power transistor into conduction or shut-off with a small number of elements, and the gate driver can be used with ease for driving power transistors having different output sizes.
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European Search Report for PCT/JP03/12953, dated Jun. 16, 2004.
Kameda Koji
Sakurama Kazuaki
Yasohara Masahiro
Donovan Lincoln
Matsushita Electric - Industrial Co., Ltd.
McCloud Renata
RatnerPrestia
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