Abstract: The present invention is related to a hardware developed for allowing the virtualization of power and therefore bringing change to the data center market. This new concept, unique in the industry, offers the missing link to respond to the multiple and contradictory challenges the industry will be facing in managing power. The concept of a rack mounted power pack sized for average loads, is allowing peak shaving, and microgrid utilization. The combination of renewable power sources and grid connections enables cost savings while increasing the resilience of the overall infrastructure. The so-called “Power Fusion” operates like a decentralized double conversion UPS with all the advantages of centralized architecture.

Abstract: The present invention is related to a hardware developed for allowing the virtualization of power and therefore bringing change to the data center market. This new concept, unique in the industry, offers the missing link to respond to the multiple and contradictory challenges the industry will be facing in managing power. The concept of a rack mounted power pack sized for average loads, is allowing peak shaving, and microgrid utilization. The combination of renewable power sources and grid connections enables cost savings while increasing the resilience of the overall infrastructure. The so-called “Power Fusion” operates like a decentralized double conversion UPS with all the advantages of centralized architecture.

Abstract: The present invention relates to a single phase, non-insulated, miniaturized DC/AC power inverter having an output power density higher than 3000 W/dm3, wherein said power inverter is packaged in a casing made of an external electrically conductive enclosure containing a fan blowing in an axial direction to a side face of the casing and, in a stacked elevation arrangement, successively from a bottom side to a top side, a layer of active filter capacitors, a heatsink, a layer of wideband semiconductors switches connected to a PCB with thermal vias and a layer of active filtering inductors, the fan and the component stacked arrangement being designed so as, in operation, the external temperature of the casing does not overcome 60° C. in any point, for an ambient temperature of maximum 30° C. under a maximum load of 2 kVA.

Abstract: The present invention is related to a method for controlling a high frequency dual bridge DC/DC power converter of nominal frequency (fN) and nominal power (PN), in a wide range of input voltage and with power overload capacity up to 200%, said method comprising a step of varying, in a range up to the value of ? radians, a first phase shift (?HB) between the voltage of the full bridge and the voltage of the half bridge, while—varying the operation frequency (f) simultaneously with the said first phase shift and/or—inducing a second phase shift (?FB) between the voltages of the two half bridges or branches constituting the full bridge, modifying thereby the first phase shift (?HB) between the voltage of the full bridge and the voltage of the half bridge and/or—decreasing the operation frequency (f) towards the LC resonance frequency (f0) of the circuit, so as to minimize the switch losses in the DC/DC converter during operation.

Abstract: The present invention relates to a single phase, non-insulated, miniaturized DC/AC power inverter (1) having an output power density higher than 3000 W/dm3, wherein said first (S1_H), second (S1_L), third (S2_H) and fourth (S2_L) switches are made of wide-band semiconductors and preferably of gallium nitride or GaN semiconductors; and wherein said DC/AC power inverter (1) further comprises: a ripple-compensating active filter comprising a third half-bridge (203) having a fifth switch (S3_H) in series with a sixth switch (S3_L), said fifth switch (S3_H) being connected at one end to the positive terminal (L+) of the DC input, said sixth switch (S3_L) being connected at one end to the negative terminal (L?) of the DC input,the other end of the fifth switch (S3_H) being connected to the other end of the sixth switch (S3_L), defining a third common end, said third common end being connected to a first end of a LC filter, made of at least one inductor (L6) and one storage capacitor (C5), a second end of the LC fil

Abstract: The present invention relates to a single phase, non-insulated, miniaturized DC/AC power inverter (1) having an output power density higher than 3000 W/dm3, wherein said first (S1_H), second (S1_L), third (S2_H) and fourth (S2_L) switches are made of wide-band semiconductors and preferably of gallium nitride or GaN semiconductors; and wherein said DC/AC power inverter (1) further comprises: a ripple-compensating active filter comprising a third half-bridge (203) having a fifth switch (S3_H) in series with a sixth switch (S3_L), said fifth switch (S3_H) being connected at one end to the positive terminal (L+) of the DC input, said sixth switch (S3_L) being connected at one end to the negative terminal (L?) of the DC input,the other end of the fifth switch (S3_H) being connected to the other end of the sixth switch (S3_L), defining a third common end, said third common end being connected to a first end of a LC filter, made of at least one inductor (L6) and one storage capacitor (C5), a second end of the LC fil

Abstract: The present invention relates to a single phase, non-insulated, miniaturized DC/AC power inverter having an output power density higher than 3000 W/dm3, wherein said power inverter is packaged in a casing made of an external electrically conductive enclosure containing a fan blowing in an axial direction to a side face of the casing and, in a stacked elevation arrangement, successively from a bottom side to a top side, a layer of active filter capacitors, a heatsink, a layer of wideband semiconductors switches connected to a PCB with thermal vias and a layer of active filtering inductors, the fan and the component stacked arrangement being designed so as, in operation, the external temperature of the casing does not overcome 60° C. in any point, for an ambient temperature of maximum 30° C. under a maximum load of 2 kVA.

Abstract: The present invention is related to a method for controlling a high frequency dual bridge DC/DC power converter of nominal frequency (fN) and nominal power (PN), in a wide range of input voltage and with power overload capacity up to 200%, said method comprising a step of varying, in a range up to the value of ? radians, a first phase shift (?HB) between the voltage of the full bridge and the voltage of the half bridge, while—varying the operation frequency (f) simultaneously with the said first phase shift and/or—inducing a second phase shift (?FB) between the voltages of the two half bridges or branches constituting the full bridge, modifying thereby the first phase shift (?HB) between the voltage of the full bridge and the voltage of the half bridge and/or—decreasing the operation frequency (f) towards the LC resonance frequency (f0) of the circuit, so as to minimize the switch losses in the DC/DC converter during operation.

Abstract: A DC-to-AC power converter (1) includes: a current-type DC-to-AC converter (70) having a first DC input (80) and a first AC output (85), said first DC input (80) being connected in parallel to said main DC input (10) and said first AC output (85) being connected in parallel to said main AC output (20); and a controller (110) for: controlling said bidirectional voltage-type DC-to-AC converter (50) for delivering at said first AC output-input (65) a sinusoidal AC voltage of said fundamental frequency f0; controlling said current-type DC-to-AC converter (70) for delivering at said first AC output (85) a quasi square-type AC current of said fundamental frequency ID and in phase with said sinusoidal AC voltage; imposing that at least 70% of said rated current is provided by said current-type DC-to-AC converter (70).

Abstract: The present invention comprises a DC-to-AC power converter (1) comprising: a current-type DC-to-AC converter (70) having a first DC input (80) and a first AC output (85), said first DC input (80) being connected in parallel to said main DC input (10) and said first AC output (85) being connected in parallel to said main AC output (20); and control means (110) for: controlling said bidirectional voltage-type DC-to-AC converter (50) for delivering at said first AC output-input (65) a sinusoidal AC voltage of said fundamental frequency f0; controlling said current-type DC-to-AC converter (70) for delivering at said first AC output (85) a quasi square-type AC current of said fundamental frequency f0 and in phase with said sinusoidal AC voltage; imposing that at least 70% of said rated current is provided by said current-type DC-to-AC converter (70).

Abstract: Multilevel DC to AC power converter has three DC inputs (IN1, IN2, IN3) for receiving, respectively, three DC voltages (V1,V2,V3), wherein V1>V2>V3, one AC output (OUT1) for delivering an AC voltage (Va), a set of at least six switching means (T1,T2,T3,T4,T5,T6) arranged in a symmetric pyramidal fashion, and switch control means for controlling an ON/OFF state of each of the six switching means. The switch control means is configured such that the top two switching means (T5,T6) are switched ON and OFF in a complementary fashion and, exclusively, at a fundamental frequency (Fa) of the AC voltage to be delivered at the AC output (OUT1), whereas at least some of the other four switching means (T1,T2,T3,T4) are switched ON and OFF at higher frequencies. The top two switching means (T5,T6) are hence subject to lower switching losses, thereby increasing the overall efficiency of the converter.