Rotary electric machine with power converter
View Patent ↗A rotary electric machine with a power converter includes: a stator that has stator windings; a rotor that has a rotor winding; a rotational position detecting sensor that outputs a rotational position signal of the rotor; a case that contains the stator and the rotor; a field module that is connected to the rotor winding; power modules, each of which is connected to each of the stator windings and has a current detector, a first switching element, and a second switching element; a heat sink fixed to the field module and the power modules; and a control substrate that outputs control signals to the field module and the power modules based on the rotational position signal from the rotational position detecting sensor. The first switching element is connected in series to the second switching element; and the current detector and both switching element are molded with insulating resin.
1. A rotary electric machine with a power converter, comprising:
a stator that has stator windings;
a rotor that has a rotor winding;
a rotational position detecting sensor that outputs a rotational position signal of said rotor;
a case that contains said stator and said rotor;
a field module that is connected to said rotor winding;
power modules, each of which is connected to each of said stator windings and has a current detector, a first switching element, and a second switching element;
a heat sink that is fixed to said field module and said power modules; and
a control substrate that outputs control signals to said field module and said power modules based on the rotational position signal from said rotational position detecting sensor,
wherein said first switching element is connected in series to said second switching element;
said current detector, said first switching element, and said second switching element are molded with insulating resin; and
said current detector is attached in series to said second switching element, and
further wherein said power module includes:
a first terminal that is joined to a lower surface electrode of said first switching element;
a second terminal that is joined to a lower surface electrode of said second switching element;
a third terminal that is joined to one end of said current detector; and
a fourth terminal that is joined to the other end of said current detector; and
said first terminal, said second terminal, said third terminal and said fourth terminal are directly bonded to said heat sink.
2. The rotary electric machine with the power converter according to claim 1 ,
wherein an output end terminal of said second terminal and an output end terminal of said fourth terminal are led out from the same side edge of said insulating resin.
3. The rotary electric machine with the power converter according to claim 1 ,
wherein an output end terminal of said first terminal and an output end terminal of said fourth terminal are led out from the same side edge of said insulating resin.
4. A rotary electric machine with a power converter, comprising:
a stator that has stator windings;
a rotor that has a rotor winding;
a rotational position detecting sensor that outputs a rotational position signal of said rotor;
a case that contains said stator and said rotor;
a field module that is connected to said rotor winding;
power modules, each of which is connected to each of said stator windings and has a current detector, a first switching element, and a second switching element;
a heat sink that is fixed to said field module and said power modules; and
a control substrate that outputs control signals to said field module and said power modules based on the rotational position signal from said rotational position detecting sensor,
wherein said first switching element is connected in series to said second switching element; and
said current detector, said first switching element, and said second switching element are molded with insulating resin; and
one end of said current detector is attached between said first switching element and said second switching element, and
further wherein said power module includes:
a first terminal that is joined to a lower surface electrode of said first switching element;
a second terminal that is connected to a lower surface electrode of said second switching element and one end of said current detector;
a third terminal that is connected to a lead joined to an upper surface electrode of said second switching element; and
a fourth terminal that is connected to the other end of said current detector and;
said first terminal, said second terminal, said third terminal and said fourth terminal are directly bonded to said heat sink.
5. The rotary electric machine with the power converter according to claim 4 ,
wherein an output end terminal of said first terminal and an output end terminal of said fourth terminal are led out from the same side edge of said insulating resin.