摘要:
A vehicle includes an engine (10), a rotating electric machine (20), a high-voltage power line (PL, NL), a high-voltage battery B1, an inverter (30), a capacitor C1, an electronic control unit (100), a low-voltage battery (62), an alternator (61), and a low-voltage power line (60). The capacitor (C1) is connected to the high-voltage power line (PL, NL). The electronic control unit (100) is configured to control the engine (10) such that the engine (10) is operated and the alternator (61) supplies electric power to the low-voltage power line (60) in a case where the possibility of the occurrence of a collision of the vehicle is detected. The electronic control unit (100) is configured to perform control such that the capacitor (C1) discharges a residual electric charge in a case where the possibility of the occurrence of the collision of the vehicle is detected or in a case where the occurrence of the collision of the vehicle is detected.
摘要:
Provided are: a starter generator including a field portion having a permanent magnet, and an armature unit including a first multi-phase winding and a second multi-phase winding which are arranged in parallel; a first power conversion unit including a first positive-side DC terminal connected to a battery and a plurality of first AC terminals connected to the first multi-phase winding, the first power conversion unit being configured to convert a power bidirectionally between DC and AC; a second power conversion unit including a plurality of second AC terminals connected to the second multi-phase winding, the second power conversion unit being configured to control a current to be input and output via the second AC terminals; and a control unit configured to detect a positional relationship between the field portion and the armature unit based on an output voltage of the second multi-phase winding, and control the first power conversion unit and the second power conversion unit in accordance with the detected positional relationship.
摘要:
A starter system for start up of a combined heat and power unit comprising a generator which is connectable to the grid. The starter system comprises a variable frequency drive, VFD, operable to receive power from the grid. The VFD reduces the frequency of the power, and provides the reduced-frequency power to the generator to start the generator. The starter system further comprises a bypass relay configured to bypass the VFD. The bypass relay allows direct connection between the grid and the generator after the generator has started. The variable frequency drive is configured to operate temporarily during start up of the combined heat and power unit.
摘要:
A vehicular power supply system comprises: a first control transistor having one end connected to the one end of the three-phase bridge circuit and the other end connected to one end of the main switch; a first control parasitic diode having an anode connected to the one end of the first control transistor and a cathode connected to the other end of the first control transistor; a second control transistor having one end connected to the other end of the battery fuse and the other end connected to the one end of the main switch; and a second control parasitic diode having an anode connected to the one end of the second control transistor and a cathode connected to the other end of the second control transistor.
摘要:
In one embodiment, there is provided a controller (4) that performs control to supply driving electricity to a secondary winding of a variable-speed generator-motor (2) from a secondary exciter (3) and thereby start the variable-speed generator-motor (2) from a standstill state in a variable-speed pumped storage system. The controller (4) performs control to complete a start-up by the driving electricity from the secondary exciter (3) and connect the variable-speed generator-motor (2) in parallel with an electric power system, in a state where a rotating speed of the variable-speed generator-motor (2) is lower than a lower limit speed of a variable-speed operation range.
摘要:
Die Erfindung betrifft ein Verfahren zur Erkennung der Schaltstellung eines Betriebsschalters (30) zur Inbetriebnahme eines Elektromotors (50), wobei der Elektromotor (50) über eine Ansteuerschaltung (40) mit einer Spannungsquelle (20) verbunden ist, und zwischen der Ansteuerschaltung (40) und der Spannungsquelle (20) der Betriebsschalter (30) angeordnet ist, der die Versorgungsspannung (U) der Spannungsquelle (20) als Eingangsspannung (U E ) auf die Ansteuerschaltung (40) schaltet. Erfindungsgemäß wird nach einem Abschalten des Elektromotors (50) die Eingangsspannung (U E ) der Ansteuerschaltung (40) überwacht und ein Gradient eines Spannungsanstiegs (dU/dt) der Eingangsspannung (U E ) ermittelt. Der ermittelte Gradient des Spannungsanstiegs (dU/dt) der Eingangsspannung (U E ) wird mit einem vorgegebenen Grenzwert verglichen und bei Überschreiten des vorgegebenen Grenzwertes der Betriebsschalter (30) als geschlossen erkannt sowie der Elektromotor (50) über die Ansteuerschaltung (40) erneut in Betrieb genommen.
摘要:
An apparatus for electric braking and system protection for an electric generator (101) includes a dynamic brake (210) and a crowbar circuit (220) designed for cooperation with power converters to dump power upon command. The dynamic brake (210) includes at least one resistor and the crowbar circuit (220) includes another at least one resistor for dissipating power from the electric generator (101). Methods for use of the electric braking and system protection calls for shunting the power to at least one of the dynamic brake (210), the crowbar circuit (220) and the generator (101) side power converter.
摘要:
A synchronous brushless machine having a single exciter field stator winding. The single exciter field stator winding is energized by a high frequency alternating current to provide a single excitation field to magnetically couple with the exciter field armature winding in both the starter mode and the generator mode. With a higher excitation frequency relative to the main armature current frequency, a steady main field voltage can be achieved which improves stability control while in the starter mode. In one or more configurations, the single exciter field stator winding is driven by an H-bridge converter.