摘要:
A high voltage DC electric power generating system includes a poly-phase permanent magnet generator (110) having at least one control winding (142) and a plurality of power windings (112). Each of the power windings is a phase of the poly-phase permanent magnet generator. A passive rectifier (160) connects a switch (162) to an input of each of the power windings such that the switch is a neutral node in a closed state and a disconnect in an open state.
摘要:
A method of compensating for rotor position error of a rotor (56) of a permanent magnet synchronous generator (PMG) (30) that provides electrical power to a direct current (DC) power generating system (20), the method including obtaining PMG phase voltages and resolver processed angular position output when the PMG (30) is driven by a prime mover (24). Once obtained, a PMG fundamental phase voltage waveform is selected by eliminating higher order harmonics. A mechanical angle of the rotor (56) is then converted into an electrical angle, then the electrical angle is aligned within the mechanical angle with a corresponding PMG fundamental phase voltage angle by adjusting offset to the electrical angle. After alignment, a plurality of resolver error offset values associated with the electrical angle are stored and additional values to the compensation table are added by interpolating data between two corresponding resolver error offset values of the plurality of resolver error offset values.
摘要:
An electrical power generating system comprises a first permanent magnetic generator (PMG) stator winding (102a) of a generator machine, a first active rectifier (106a) communicatively connected to the first PMG stator winding (102a), the first active rectifier (106a) operative to receive alternating current (AC) from the first PMG stator winding (102a) and convert the AC to direct current (DC), a direct current link communicatively connected to the first active rectifier (106a), wherein the first active rectifier (106a) is operative to output the DC to the direct current link, a second PMG stator winding (102b) of the generator machine, and a second active rectifier (106b) communicatively connected to the second PMG stator winding (102b), the second active rectifier (106b) operative to receive AC from the second PMG stator winding (102b) and convert the AC to DC, the second active rectifier (106b) communicatively connected to the direct current link and operative to output DC to the direct current link.
摘要:
An assembly for operating a DC synchronous machine 100 according to an exemplary aspect of the present disclosure includes, among other things, a controller 114 that is configured to determine a position of a rotating portion 106 utilizing a carrier signal, adjust current supply to a field winding, and monitor and adjust operation of the DC synchronous machine based on various electrical parameters relating to the carrier signal. A method for operating a DC synchronous machine is also disclosed.
摘要:
A system for controlling gate power includes a metal oxide semiconductor field effect transistor (MOSFET) 23 configured to supply power to a load according to a gate control voltage applied to a gate of the MOSFET. The system includes a gate control circuit 200 configured to turn on and off the gate control voltage supplied to the gate of the MOSFET. The system also includes a ramping circuit 220 configured to perform at least one of ramping up a voltage applied to the gate of the MOSFET based on the gate control circuit turning on power to the gate of the MOSFET and ramping down the voltage applied to the gate of the MOSFET based on the gate control circuit turning off power to the gate of the MOSFET.
摘要:
An example electrical power system of a vehicle includes a DC bus (20) operable to power a DC load (16) of the vehicle and a power grid external to the vehicle, a DC power generating system (12), a multifunctional traction drive system, and a controller. The DC power generating system includes a battery (22), and a first power converter (30) operable in an active rectification mode, an inverter mode, and at least one DC-DC converter mode. The multifunctional traction drive system (14) includes a second power converter operable to cooperate with the DC power generating system for operation in an inverter mode and at least one DC-DC converter mode. The controller (60) is operable to select an output configuration of the battery and an operating mode of each of the first and second power converters according to a plurality of predefined system configurations.
摘要:
An example vehicle electrical power system includes a battery (12) operable to power a DC load of a vehicle over a DC bus (16), a capacitor (18), a multiphase AC machine (26) comprising a plurality of windings (A, B, C), and a power converter. The power converter includes a plurality of power switches (44, 46) and a controller (20). The controller (20) is configured to, in a first mode, charge the battery (12) by operating the power converter as an active rectifier; in a second mode, operate the power converter as a buck converter that decreases a voltage from the DC bus (16), and charge the capacitor (18) from the decreased voltage; and in a third mode, operate the power converter as a boost converter for the capacitor (18) that increases an output voltage of the DC bus (16), and provide the increased output voltage to the DC load. The power converter utilizes the windings when operated as the active rectifier, buck converter, and boost converter.