摘要:
The invention aims to optimise all of the engine power available on a helicopter provided with an auxiliary engine by allowing that auxiliary engine to provide non-propulsive and/or propulsive energy during flight. For this purpose, this auxiliary engine is coupled in such a way as to be able to directly contribute to the supply of propulsive mechanical or electrical energy and non-propulsive electrical energy of the aircraft. An example configuration architecture comprises an onboard electrical network (2), two main engines (5a, 5b) and an energy conversion system for converting mechanical/electrical energy (6, 6a, 6b, 7) between a main gearbox BTP (40) transferring power to the propulsion members (4, 41) and means for receiving electrical energy comprising the onboard network (2) and a power electronics system (9) linked with starters (8) of the main engines (5a, 5b). The configuration also comprises an auxiliary power engine (3) supplying electrical energy to the means for receiving electrical energy (2, 9) via the energy conversion system (6, 6a, 6b, 7) and mechanical coupling means (8a, 11a to 11d) between the auxiliary engine (3, 0, 30) and at least one propulsion means (4, 41).
摘要:
Method of stabilizing a DC electric network, this network comprising a DC voltage source (11) powering electric loads (12,18, 24) which are connected in parallel across the terminals of the voltage source (11) and which are each intended to receive a setpoint of the current or the power, characterized in that the network is stabilized by regulating the setpoints applied to the loads (12,18, 24) by means of a virtual stabilization impedance generated across the terminals of each load (12,18, 24), these virtual impedances being dimensioned so as to stabilize the network in various desired operating points and in various given configurations of the network comprising the state where at least one load is inactive or faulty and the state where the stabilization of a load is inactive, each virtual impedance being generated by means of a nonlinear regulating loop acting on the setpoint of the corresponding load.
摘要:
System for control and electric power supply of at least one helicopter motor/generator comprising a first DC/AC converter (30) intended to provide selectively, according to the respective positions of contactors (320, 322, 324, 326, 328, 330, 332) of a connection matrix (32) which are actuated from an electronic control circuit (34), an AC power supply to at least one motor/generator, this first DC/AC converter being powered with DC voltage by a voltage supply device delivering a DC voltage Vdc and formed either by a circuit (36) for rectifying an AC voltage delivered via a contactor (22) by a starter/generator (18) of an APU (16) or by a DC/DC voltage boosting converter (38) powered from a battery (20) via a contactor (24), the connection matrix furthermore comprising a contactor (328) for placing the first DC/AC converter in parallel with the second DC/AC converter so as to allow, once one at least of these motors/generators has been started, an injection of additional power from the starter/generator of the APU.