摘要:
The invention relates to a control device (4) for the actuation of a semiconductor switch (1) on an inverter having an actuation switch (16) that is designed to generate a driver signal (18) depending on a switch signal (5) generated by a control regulation of the inverter, and a driver circuit (15) that is connected between the actuation circuit (16) and a control input (13) of the semiconductor switch (1), and which is designed to receive the driver signal (18) and a control signal (7) depending on the driver signal (18), said control signal actuating a semiconductor switch (1) for the generation and infeed into the control input (13) of the semiconductor switch (1), wherein the actuation circuit (16) is designed to generate the driver signal (18) as a consequence of driver signal pulses with a predetermined and adjustable pulse length such that the semiconductor switch (1) is not fully conductive in the event of an actuation with the control signal (7) during the pulse length.
摘要:
Es werden ein modularer Hochfrequenz-Umrichter (3) und ein Verfahren zu dessen Betrieb angegeben. Der Umrichter (3) umfasst mehrere Submodule (5a-5c), die eingangsseitig in Reihe über eine Induktivität (7) in einen aus einer Gleichspannungsquelle (4) gespeisten Versorgungsstromkreis (8) geschaltet sind. Jedes Submodul (5a-5c) weist eingangsseitig eine Halbbrücke (20) und ausgangsseitig eine mindestens einphasige Vollbrücke (21) auf. Die Halbbrücke (20) und die Vollbrücke (21) sind in jedem Submodul (5a-5c) jeweils zusammen mit einer Zwischenkreiskapazität (22) in einem Gleichspannungs-Zwischenkreis (25) parallelgeschaltet. Verfahrensgemäß werden die Submodule (5a-5c) im Wechsel auf den Versorgungsstromkreis (8) aufgeschaltet, indem die Zwischenkreiskapazität (22) des jeweils aufgeschalteten Submoduls (5a-5c) mittels der eingangsseitigen Halbbrücke (20) in den Versorgungsstromkreis (8) geschaltet wird. Dabei wird die über der jeweiligen Zwischenkreiskapazität (22) eines jeden Submoduls (5a-5c) abfallende Zwischenkreisspannung (U Z1 -U Z3 ) gemessen. Das oder jedes aufzuschaltende Submodul (5a-5c) wird nach Maßgabe der Spannungsabweichung der zugehörigen Zwischenkreisspannung (U Z1 -U Z3 ) von einem vorgegebenen Spannungssollwert (U Z10 -U Z30 ) ausgewählt.
摘要:
A DC-to-DC converter (42) comprises a DC-to-AC converter (52) and an AC-to-DC converter (56) connected in series with a transformer (54), both the DC-to-AC converter and the AC-to-DC converter comprising semiconductor switches (58, 62). A method for controlling a DC-to-DC converter (42) comprises the steps of: determining a DC input voltage (82) and a DC output voltage (84) of the DC-to-DC-converter (42); determining whether a switching condition (C) based on the DC input voltage (82) and the DC output voltage (84) is fulfilled; and generating a switching signal (98, 100) with switching pulses (140, 142) for switching the semiconductor switches (58, 82) of at least one of the DC-to-AC converter (52) and the AC-to-DC converter (56), wherein the generation of switching pulses (140, 142) is blocked, when the switching condition (C) is not fulfilled.
摘要:
Provided is an apparatus for charging battery in electric vehicle that includes a DC-DC converter unit (10,20) formed in two channels for converting a charge of the low voltage battery (160) to a power source by receiving a power source from the high voltage battery (110).
摘要:
A DC to three-phase AC inverter system includes a three-phase motor, an inverter circuit, switching elements, a capacitor, a DC power source and a control circuit. The DC power source is connected to the three-phase motor at a neutral point thereof. The control circuit calculates voltage commands, first through third divided boost commands by dividing a boost command, and first through third drive signals based on the voltage commands and the first through third divided boost commands. The second and third divided boost commands are used when the PWM control is performed by turning on and off the switching elements for the second and third phases while the switching elements for the first phase continues to be on or off state is set larger than those used when the PWM control is performed by turning on and off the switching elements for the first through third phases.
摘要:
A primary-side DC voltage is increased to a secondary voltage by a converter (30c), and converted by an inverter (19) into three-phase AC, which is applied to an electric motor (10m). Regenerative power from the electric motor is reversely supplied to a primary-side DC power supply (18, 21). A secondary-side target voltage, which sets the secondary voltage to be applied to the inverter, is determined such that the electric motor is driven on the basis of one of a first region in a modulation mode in which PWM power is applied to at least two phases and in which field weakening control is not performed, a third region in a modulation mode in which PWM power at a voltage lower than a maximum voltage (Vmax) that can be output by the converter is applied to at least two phases and in which field weakening control is performed, and a second region ( FIG. 4 ) in a one-pulse mode in which rectangular-wave power at a voltage lower than the maximum voltage of the converter is applied to all the phases and in which field weakening control is performed. A converter control device (30v) controls the secondary voltage to the secondary-side target voltage.
摘要:
Disclosed are a carrier communication method based on electric automobile charging/discharging, comprising the following steps: S1: after being powered up and started, an electric automobile detecting whether a carrier signal from a peripheral device is received through an interface wire harness and whether the carrier signal is correct; S2: when detecting the carrier signal and detecting that the carrier signal is correct, the electric automobile receiving the carrier signal through the interface wire harness; and S3: the electric automobile performing coupling and filtering on the received carrier signal to convert the carrier signal into a standard carrier signal, and demodulating the standard carrier signal into a digital signal to obtain information of the peripheral device. The method, on the basis of not increasing the number of wire harness, may implement data transmission and sharing between an automobile and ECU modules of a peripheral device, and carrier communication with other signal lines as communication media at the same time, so as to avoid construction and investment of a new communication network, and reduce manufacturing cost and maintenance difficulty. Further disclosed are a carrier communication system and a carrier apparatus based on electric automobile charging/discharging.
摘要:
A vehicle control system to prevent a shortage of driving force during shifting from single-motor mode to dual-motor mode is provided. The control system is applied to a vehicle (Ve) having at least two motors (MG1, MG2). The vehicle control system is configured to start the first motor to shift the operating mode to the first mode upon exceedance of a threshold value of a required driving force under the second mode, and the threshold value is set less than a maximum driving force to be generated by the second motor (MG2) propelling the vehicle (Ve) under the second mode.