SYSTEMS FOR POWER MODULE ASSEMBLY FOR INVERTER
Disclosed solutions relate to electrical inverters. In an example, a system including an inverter is disclosed. The inverter may convert DC power from a voltage source to AC power to drive a motor. The inverter includes a capacitor assembly and a first power module. The first power module includes a first inverter to output first AC power to a first end of a first winding of the motor, a second inverter to output second AC power to a second end of the first winding, and a changeover switch to selectively connect and disconnect the second end of the first winding to and from a neutral connection.
1 . A system comprising:
an inverter to convert DC power from a voltage source to AC power to drive a motor, wherein the inverter includes:
a capacitor assembly; and
a first power module including:
a first inverter to output first AC power to a first end of a first winding of the motor;
a second inverter to output second AC power to a second end of the first winding; and
a changeover switch to selectively connect and disconnect the second end of the first winding to and from a neutral connection.
2 . The system of claim 1 , wherein the capacitor assembly includes:
one or more busbars; and
one or more capacitors.
3 . The system of claim 2 , wherein the one or more capacitors include:
a first capacitor for the first inverter; and
a second capacitor for the second inverter.
4 . The system of claim 2 , wherein the one or more busbars include:
a positive busbar connected to the one or more capacitors and the first power module; and
a negative busbar connected to the one or more capacitors and the first power module.
5 . The system of claim 4 , wherein the one or more busbars further include:
a neutral busbar connected to the neutral connection of the first power module.
6 . The system of claim 4 , wherein:
the first power module is configured to drive the first winding of the motor, and
the inverter further includes:
a second power module to drive a second winding of the motor; and
a third power module to drive a third winding of the motor.
7 . The system of claim 6 , wherein the one or more capacitors include:
a first capacitor for the first inverter of the first power module;
a second capacitor for the second inverter of the first power module;
a third capacitor for a first inverter of the second power module;
a fourth capacitor for a second inverter of the second power module;
a fifth capacitor for a first inverter of the third power module; and
a sixth capacitor for a second inverter of the third power module.
8 . The system of claim 6 , wherein:
the positive busbar is further connected to the second power module and the third power module; and
the negative busbar is further connected to the second power module and the third power module.
9 . The system of claim 1 , further including:
the voltage source configured to supply the DC power to the inverter; and
the motor configured to receive the AC power from the inverter to drive the motor,
wherein the system is provided as a vehicle including the inverter, the voltage source, and the motor.
10 . A system comprising:
an inverter to convert DC power from a voltage source to AC power to drive a motor, wherein the inverter includes:
a capacitor assembly; and
a power module including:
a first inverter to output first AC power to a first end of a first winding of the motor; and
a second inverter to output second AC power to a second end of the first winding.
11 . The system of claim 10 , wherein the capacitor assembly includes:
one or more busbars; and
one or more capacitors.
12 . The system of claim 11 , wherein the one or more capacitors include:
a first capacitor for the first inverter; and
a second capacitor for the second inverter.
13 . The system of claim 11 , wherein the one or more busbars include:
a positive busbar connected to the one or more capacitors and a positive connection of the power module; and
a negative busbar connected to the one or more capacitors and a negative connection of the power module.
14 . The system of claim 13 , wherein the one or more busbars further include:
a neutral busbar connected to a neutral connection of the power module.
15 . The system of claim 14 , wherein the power module includes:
one or more positive power tabs connected to positive busbar;
one or more negative power tabs connected to negative busbar; and
one or more neutral tabs connected to neutral busbar.
16 . The system of claim 14 , wherein each of the positive busbar, the negative busbar, and the neutral busbar includes a respective connection tab on a same side of the capacitor assembly.
17 . The system of claim 10 , wherein the power module further includes:
a changeover switch to selectively connect and disconnect the second end of the first winding to and from a neutral connection.
18 . A system comprising:
an inverter to convert DC power from a voltage source to AC power to drive a motor, wherein the inverter includes:
a capacitor assembly including one or more busbars and one or more capacitors;
a first power module to drive a first winding of the motor;
a second power module to drive a second winding of the motor; and
a third power module to drive a third winding of the motor,
wherein each of the first power module, the second power module, and the third power module includes:
a first inverter to output first AC power to a first end of the respective winding;
a second inverter to output second AC power to a second end of the respective winding; and
a changeover switch to selectively connect and disconnect the second end of the respective winding to and from a neutral connection.
19 . The system of claim 18 , wherein each of the first power module, the second power module, and the third power module further includes:
one or more power tabs connected to the one or more capacitors via the one or more busbars.
20 . The system of claim 18 , wherein the inverter further includes:
a heat sink provided on a first side of the first power module, the second power module, and the third power module,
wherein the capacitor assembly is provided on a second side of the first power module, the second power module, and the third power module, the second side opposite from the first side.