초록 ▼

A switch-mode power converter uses a digital signal processor (DSP) to control operation of power semiconductors through gate drive amplifiers, further using the DSP's internal analog-to-digital converters to measure necessary currents, voltages and timings within the main power circuit. Using value

A switch-mode power converter uses a digital signal processor (DSP) to control operation of power semiconductors through gate drive amplifiers, further using the DSP's internal analog-to-digital converters to measure necessary currents, voltages and timings within the main power circuit. Using values captured by the A-to-D converters, software controlling the DSP manipulates duty cycle and timing parameters of the main semiconductor switches to provide at least three different modes of operation for serving a wide range of lighting loads. This power system reduces the size, cost, and weight, of circuitry needed to operate stage lighting equipment. The DSP's microprocessor eliminates most of the complex and dedicated analog circuitry commonly used for electronic power conversion, and a common power circuit topology provides an identical hardware platform for each luminaire circuit. Overall reliability is enhanced because of the reduction in circuit complexity.

대표청구항 ▼

[ We claim:] [1.] An electric power converter, comprising:a rectifier for coupling to a power source, said rectifier having first and second rectified output terminals, said second rectified output terminal being connected to a first output terminal;a first switch having a first and second current h

[ We claim:] [1.] An electric power converter, comprising:a rectifier for coupling to a power source, said rectifier having first and second rectified output terminals, said second rectified output terminal being connected to a first output terminal;a first switch having a first and second current handling terminals and a control terminal, said first current handling terminal being coupled to said first output terminal of said rectifier;an inductor having first and second terminals, said first terminal being connected to said second terminal of said electronic switch and said second terminal being connected to a second output terminal;a diode having a cathode coupled to said second terminal of said electronic switch and an anode coupled to said second terminal of said rectifier;a current sensor coupled in series with said inductor;a voltage sensor for sensing the voltage between said first and second output terminals; anda controller having a data processor, said controller having a first input terminal coupled to said current sensor, a second input terminal coupled to said voltage sensor, a first output terminal providing a first control signal coupled to said control terminal of said first switch, said controller controlling electrical energy applied to said first and second output terminals.