Charger for an industrial truck
First Claim
1. Charger for an industrial truck which has an asynchronous machine and a three-phase AC control unit for converting a battery voltage for the asynchronous machine, said charger having a mains power module with two connecting leads, each connecting lead being connected to a motor connection lead, wherein the mains power module applies an AC voltage to at least one motor connection lead via a transformer, wherein a charging current is rectified by half-bridges in the three-phase AC control unit, and wherein a high frequency AC current of around 150 kHz is applied parallel to the windings of an asynchronous machine, and wherein a capacitor is provided in one of the connecting leads.
1 Assignment
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Accused Products
Abstract
Charger for an industrial truck which has an asynchronous machine and a three-phase AC control unit for converting a battery voltage for the asynchronous machine, said charger having a mains power module which applies an AC voltage to one or two motor connection leads via a transformer, the charging current being rectified by half-bridges in the three-phase AC control unit.
9 Citations
8 Claims
- 1. Charger for an industrial truck which has an asynchronous machine and a three-phase AC control unit for converting a battery voltage for the asynchronous machine, said charger having a mains power module with two connecting leads, each connecting lead being connected to a motor connection lead, wherein the mains power module applies an AC voltage to at least one motor connection lead via a transformer, wherein a charging current is rectified by half-bridges in the three-phase AC control unit, and wherein a high frequency AC current of around 150 kHz is applied parallel to the windings of an asynchronous machine, and wherein a capacitor is provided in one of the connecting leads.
Specification