TRACTION MOTOR INVERTER: Protection Control
WARNING: This page is about a different car, the 2011 Nissan Leaf. However, it is still accessible from the selected car via links, so may be relevant.
When temperature of traction motor inverter or traction motor components rises, the traction motor inverter temporarily enters a protective control state in order to protect the system. It automatically returns to the normal status if the safety is secured.
TRACTION MOTOR INVERTER STATUS
| Condition | Navigation display | Control | Normal return condition |
|---|---|---|---|
| Traction motor is overheated | Exists | Traction motor output torque is limited according to the traction motor temperature. | Traction motor temperature drops |
| IGBT high temperatures seen when traction motor speed is extremely low | Does not exist | IGBT switching frequency is reduced.
NOTE:
Traction motor electromagnetic noise increases.
|
|
| IGBT is overheated | Exists | Traction motor output torque is limited according to the IGBT temperature. | IGBT temperature drops |
| Smoothing condenser is overheated | Exists | Traction motor output torque is limited according to the smoothing condenser temperature. | Smoothing condenser temperature drops |