DC BUS VOLTAGE HARMONICS REDUCTION
First Claim
1. A control system configured for use with a three-phase PWM converter that receives an input signal from a three-phase power supply and provides an output signal at a DC link, the control system comprising:
- a voltage-separating module for generating on the basis of the input signal a positive sequence voltage component and a negative sequence voltage component in a rotating reference frame;
a reference current computation module using at least the positive sequence voltage component and the negative sequence voltage component to compute a first reference current and a second reference current;
a current regulating module using at least the first reference current and the second reference current to generate a command signal, and to provide the command signal to a driving circuit of the three-phase PWM converter for generating a regulated DC bus voltage at the DC link.
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Accused Products
Abstract
In one aspect, in general, the invention features a control system configured for use with a three-phase PWM converter. The control system receives an input signal from a three-phase power supply and provides an output signal at a DC link. A voltage-separating module generates on the basis of the input signal a positive sequence voltage component and a negative sequence voltage component in a rotating reference frame. A reference current computation module uses at least the positive sequence voltage component and the negative sequence voltage component to compute a first reference current and a second reference current. A current regulating module uses at least the first reference current and the second reference current to generate a command signal. The command signal is provided to a driving circuit of the three-phase PWM converter for generating a regulated DC bus voltage at the DC link.
68 Citations
18 Claims
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1. A control system configured for use with a three-phase PWM converter that receives an input signal from a three-phase power supply and provides an output signal at a DC link, the control system comprising:
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a voltage-separating module for generating on the basis of the input signal a positive sequence voltage component and a negative sequence voltage component in a rotating reference frame; a reference current computation module using at least the positive sequence voltage component and the negative sequence voltage component to compute a first reference current and a second reference current; a current regulating module using at least the first reference current and the second reference current to generate a command signal, and to provide the command signal to a driving circuit of the three-phase PWM converter for generating a regulated DC bus voltage at the DC link. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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Specification