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US 2021/0061118 A1Published application
Charging system and method using motor driving system
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorsYong Jae LEE, Jae Ho HWANG, Joo Young PARK, Su Hyun BAE
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Abstract
A charging system and a charging method using a motor driving system are disclosed which may enable charging between vehicles each having a battery for providing power to a vehicle driving motor, such as electric vehicles or plug-in hybrid vehicles.
Claims12
A charging system using a motor driving system comprising:
- a first vehicle;
- and
- a second vehicle,
- wherein each of the first vehicle and the second vehicle further comprises:
- a battery;
- an inverter comprising:
- a direct current (DC) link connected to the battery;
- a plurality of motor connection terminals;
- and
- a plurality of switching devices provided between the DC link and the plurality of motor connection terminals;
- and
- a motor comprising a plurality of coils that is connected to the plurality of motor connection terminals to form a neutral point;
- and
- a controller configured to:
- determine a duty of the plurality of switching devices;
- and
- control a voltage or current of the neutral point,
- wherein, when the battery in the first vehicle or the second vehicle is charged by electrically interconnecting the neutral point in the first vehicle and the neutral point in the second vehicle, the controller is further configured to:
- control the plurality of switching devices such that the voltage of each of the neutral points becomes a predetermined target voltage;
- and
- control the plurality of switching devices such that the current of each of the neutral points becomes a predetermined target current.
18 more elements
A charging method using the charging system, comprising:
- detecting, by controllers of a first vehicle and a second vehicle, voltages of the DC links of the first vehicle and the second vehicle;
- obtaining available voltages of the first vehicle and the second vehicle by subtracting predetermined margins of the first vehicle and the second vehicle from the detected DC link voltages;
- setting, by the controllers of the first vehicle and the second vehicle, a target voltage of each of the interconnected neutral points of motors based on the DC link voltages and the available voltages;
- controlling, by a controller of the first vehicle, a plurality of switching devices of an inverter in the first vehicle such that the voltage of each of the neutral points becomes the target voltage;
- and
- controlling, by a controller of the second vehicle, a plurality of switching devices of the inverter and the second vehicle such that the current of each of the neutral points becomes a predetermined target current.
3 more elements
Dependencies are inferred from the claim text.