POWER CONVERSION COMPONENTS, SYSTEMS AND METHODS
First Claim
1. A power conversion method comprising:
- generating a stream of alternating polarity pulses with a parallel-loaded resonant (PLR) inverter operating in discontinuous conduction mode;
inverting the pulses using a plurality of bi-directional switches and a single-phase or a poly-phase inverter bridge;
filtering the inverted pulses with a single phase or a poly phase low pass filter; and
generating a single-phase or poly-phase alternating current (AC) having a sinusoidal waveform;
wherein the alternating current having a sinusoidal waveform has a lower frequency than the stream of alternating polarity pulses.
1 Assignment
0 Petitions
Accused Products
Abstract
Components, systems and methods for generating variable frequency AC voltage from a DC power supply are described. The components include a fullbridge (FB) parallel load resonant (PLR) converter which operates in discontinuous conduction mode. The PLR converter includes MOSFETs in an H-bridge configuration and employs a topology which minimizes inductance. The PLR converter can be coupled to a single or poly-phase bridge for use as an inverter. The inverter can be used to produce an AC sinusoidal waveform from a low voltage, high current DC power supply. Systems and techniques for modulating the output from the PLR converter to produce an AC sinusoidal waveform having desired characteristics, including frequency and voltage, are also provided. The PLR converter can also be coupled to a rectifier for use as a DC-DC converter.
-
Citations
17 Claims
-
1. A power conversion method comprising:
-
generating a stream of alternating polarity pulses with a parallel-loaded resonant (PLR) inverter operating in discontinuous conduction mode; inverting the pulses using a plurality of bi-directional switches and a single-phase or a poly-phase inverter bridge; filtering the inverted pulses with a single phase or a poly phase low pass filter; and generating a single-phase or poly-phase alternating current (AC) having a sinusoidal waveform; wherein the alternating current having a sinusoidal waveform has a lower frequency than the stream of alternating polarity pulses. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A DC-AC converter comprising:
-
a PLR inverter configured to operate in a discontinuous conduction mode;
gate drivers associated with the PLR inverter;a three-phase six-pulse bridge with bi-directional switches comprising power transistors associated with the PLR inverter; gate drivers associated with the pulse bridge; and a central controller comprising FPGA, an electronic memory, analog sensors and digital sensors, the controller being configured to control the DC-AC converter. - View Dependent Claims (14, 15, 16, 17)
-
Specification