Abstract: Converter control system coupled between a wind turbine generator and the electric power distribution grid, comprising at least two converter modules connected in parallel which are enabled/disabled by out-of-phase pulse-width modulation (PWM) patterns. The control device guarantees dynamic switching of the converter modules irrespective of the enabling or disabling of at least one converter module, constantly delivering electric power to the distribution grid.

Abstract: Converter control system coupled between a wind turbine generator and the electric power distribution grid, comprising at least two converter modules connected in parallel which are enabled/disabled by out-of-phase pulse-width modulation (PWM) patterns. The control device guarantees dynamic switching of the converter modules irrespective of the enabling or disabling of at least one converter module, constantly delivering electric power to the distribution grid.

Abstract: A fixed cellular terminal (FCT) (30) includes a packet-service unit (154), an analog line interface (120), and a packet-service/analog line gateway (68). The packet-service unit facilitates radio frequency communication over an air interface with a cellular telecommunications network and provides, amongst others, a packet-service such as GPRS service. The analog line interface is connected to a modem in a terminal equipment unit (50). The packet-service/analog-line gateway (68) enables use of the packet-switched service on the analog line interface (120) and implements a layer 2 point-to-point protocol over the layer 1 analog modulations in a FCT modem (121), thereby providing the FCT with the protocol that the terminal equipment (TB) normally requires on the remote side of a circuit-switched connection. Also, the packet-service/analog-line gateway includes a sequence interpreter (150) which recognizes predetermined gateway-controlling sequences on the analog line (46).

Abstract: A fixed cellular terminal (FCT) (30) includes a packet-service unit (154), an analog line interface (120), and a packet-service/analog line gateway (68). The packet-service unit facilitates radio frequency communication over an air interface with a cellular telecommunications network and provides, amongst others, a packet-service such as GPRS service. the analog line interface is connected to a modem in a terminal equipment unit (50). The packet-service/analog-line gateway (68) enables use of the packet-switched service on the analog line interface (120) and implements a layer 2 point-to-point protocol over the layer 1 analog modulations in a FCT modem (121), thereby providing the FCT with the protocol that the terminal equipment (TE) normally requires on the remote side of a circuit-switched connection. Also, the packet-service/analog-line gateway includes a sequence interpreter (150) which recognizes predetermined gateway-controlling sequences on the analog line (46).