PASSENGER TRANSPORT SYSTEM HAVING AT LEAST ONE INVERTER
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Accused Products
Abstract
A passenger transport system includes a three-phase drive motor, a control device and an inverter module having power semiconductor switches. The gate electrodes of the power semiconductor switches are driven directly by the control device. The inverter module is connected on the input side to a DC source and on the output side to the three-phase drive motor. Between the DC source and the inverter module there is a DC circuit, wherein drive signals that can be modulated on the DC circuit can be generated by the control device, and the inverter module has a demodulator, by which demodulator the drive signals can be converted into control voltages assigned to the individual gate electrodes of the power semiconductor switches.
8 Citations
30 Claims
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1-15. -15. (canceled)
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16. A passenger transport system having a three-phase AC drive motor and a control device, wherein the control device processes operation signals of the passenger transport system and controls the three-phase AC drive motor according to the operation signals, comprising:
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a DC voltage source; an inverter module with power semiconductor switches, wherein gate electrodes of the power semiconductor switches are triggered directly by the control device, and the inverter module has an input side connected to the DC voltage source and an output side connected to the three-phase AC drive motor; and a DC voltage circuit connected between the DC voltage source and the inverter module, wherein the control device generates trigger signals modulated to the DC voltage circuit and the inverter module has a demodulator that converts the modulated trigger signals into control voltages assigned to individual ones of the gate electrodes of the power semiconductor switches. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification