Motor controller for battery forklift

Details Motor controller for battery forklift Motor controller for battery forklift

B - Operations, Transporting

66

F

B66F 9/06 (2006.01) B60L 11/18 (2006.01)

Patent

CA 2365153

The present invention provides an AC motor controller for a battery forklift operated by driving an AC motor via a three-phase bridge inverter using a battery as an energy source, wherein it is possible to replace only a damaged arm, and the control signal of each arm is isolated with a transformerless constitution, by using a diode. The AC motor controller comprises the three-phase bridge inverter containing three arms having semiconductor elements connected in series on their positive side and negative side, wherein the three arms, each of which constitutes a mounting unit, form a module, and each of the three arms is independently removable.

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