| US 9,812,943 B2 | ||
| Resonant load power conversion device and time division operation method for resonant load power conversion device | ||
| Yasuhiro Kondo, Numazu (JP) | ||
| Assigned to MEIDENSHA CORPORATION, Tokyo (JP) | ||
| Appl. No. 15/318,796 |
||
| Filed by MEIDENSHA CORPORATION, Tokyo (JP) | ||
| PCT Filed Jun. 17, 2015, PCT No. PCT/JP2015/067430 § 371(c)(1), (2) Date Dec. 14, 2016, PCT Pub. No. WO2015/194585, PCT Pub. Date Dec. 23, 2015. |
||
| Claims priority of application No. 2014-124135 (JP), filed on Jun. 17, 2014. | ||
| Prior Publication US 2017/0133920 A1, May 11, 2017 | ||
| Int. Cl. H02M 1/00 (2006.01); H02M 1/088 (2006.01); H02M 7/537 (2006.01) | ||
| CPC H02M 1/088 (2013.01) [H02M 7/537 (2013.01)] | 6 Claims |
| 1. A resonant load power conversion apparatus including a single-phase inverter having a dc input side to be connected with
a dc voltage source and an output side to be connected with a resonant load and outputting a rectangular wave voltage with
a resonance frequency, the resonant load power conversion apparatus comprising:
switch group circuits which are connected, respectively, with upper and lower arms of a first phase of the single-phase inverter
and upper and lower arms of a second phase of the single-phase inverter, each of the switch group circuits including N series
combinations, N being a number of the series combinations (N is an integer equal to or greater than 2), each of the series
combinations being a series combination of M switching devices, M being a number of the switching devices (M is an integer
equal to or greater than 2), the N series combinations being connected in parallel with each other by main circuit conductors;
and
a control section configured to control each of the switching devices of the switch group circuits of the single-phase inverter
cyclically in an ON state for an ON period equaling (M×N+1) clocks and in an OFF state for an OFF period equaling (M×N−1)
clocks in each cycle of a cycle period equaling to (2×M×N) clocks, in a switching pattern to turn on each of the series combinations
in a manner of time division by 1/(M×N).
|