Power control of a transport system
First Claim
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1. Power control of a transport system, the power control comprising:
- an electric motor for moving the transport appliance;
a power supply appliance of the motor, the power supply including an intermediate circuit and said power supply appliance being fitted between a power source and the electric motor, anda network rectifier fitted between said power source and the intermediate circuit such that the rectifier is configured to supply braking power returning from the electric motor the power source, the network rectifier being single-phase and including only one choke and only one changeover switch; and
whereinthe network rectifier is fitted to the intermediate circuit via diodes connected to positive and negative intermediate circuit busbars;
the power source is formed of a single-phase or multiphase AC electricity system including a neutral wire,said choke is fitted between the phase of the AC electricity system and a center point of said changeover switch,at least two capacitors in series are connected in parallel with said changeover switch, andsaid neutral wire is connected to a center point of the capacitors.
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Abstract
The power control of a transport system comprises an electric motor for moving the transport appliance as well as a power supply appliance of the motor, which comprises an intermediate circuit. The power supply appliance of the motor is fitted between the power source and the electric motor. The transport system further comprises a network rectifier, which is fitted between the power source and the intermediate circuit of the power supply appliance of the motor for supplying braking power returning from the motor of the transport appliance to the power source.
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Citations
8 Claims
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1. Power control of a transport system, the power control comprising:
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an electric motor for moving the transport appliance; a power supply appliance of the motor, the power supply including an intermediate circuit and said power supply appliance being fitted between a power source and the electric motor, and a network rectifier fitted between said power source and the intermediate circuit such that the rectifier is configured to supply braking power returning from the electric motor the power source, the network rectifier being single-phase and including only one choke and only one changeover switch; and wherein the network rectifier is fitted to the intermediate circuit via diodes connected to positive and negative intermediate circuit busbars; the power source is formed of a single-phase or multiphase AC electricity system including a neutral wire, said choke is fitted between the phase of the AC electricity system and a center point of said changeover switch, at least two capacitors in series are connected in parallel with said changeover switch, and said neutral wire is connected to a center point of the capacitors. - View Dependent Claims (3, 4, 5, 7, 8)
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2. Power control of a transport system, the power control comprising:
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an electric motor for moving the transport appliance; a power supply appliance of the motor, the power supply including an intermediate circuit and said power supply appliance being fitted between a power source and the electric motor, and a network rectifier fitted between said power source and the intermediate circuit such that the rectifier is configured to supply braking power returning from the electric motor the power source, the network rectifier including first and second changeover switches and first and second chokes; and wherein the network rectifier is fitted to the intermediate circuit via diodes connected to positive and negative intermediate circuit busbars; the power source is formed from a two-phase or multiphase AC electricity system, where the first choke is fitted between the first phase of the AC electricity system and a center point of the first changeover switch, and the second choke is fitted between the second phase of the AC electricity system and a center point of the second changeover switch. - View Dependent Claims (6)
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Specification