A comparative analysis and experimental studies of resonant commutated pole inverter losses

Dawidziuk, J.; Jalbrzykowski, S.; Prajs, Z.

doi:10.1109/iecon.1994.397797

Cited by 6 publications

(2 citation statements)

References 7 publications

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“…These "reactive elements" are basically inductances and capacitances (resonant tank L r -C r ) that store energy to commutate the main PWM pole. In some ZVT circuits, voltage clamps are employed to limit the resonant capacitor energy ( Figure 5(a)) [11]. The v exc is comprised by a set of constant voltage sources (V Ap , V An ) and the auxiliary pole S a1 -S a2 .…”

Section: A the Avs Circuit Structure And Operation Principlementioning

confidence: 99%

“…Alternatively to the active v exc where the switches S a1 -S a2 commutate during the auxiliary circuit operation, the passive v exc is used just to trigger the auxiliary circuit. In this approach, generally used in ZVT topologies [11], the state of the switches S a1 and/or S a2 is held until the end of the PWM pole commutation process. It must be highlighted that, despite of a passive or active "excitation source" be implemented, the main characteristic of the continuous (co-)sinusoidal time varying function AVS (Figure.…”

Section: A the Avs Circuit Structure And Operation Principlementioning

confidence: 99%

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Zczvt Inverters With Magnetically Coupled Auxiliary Pole

Martins¹,

Stein²,

Russi³

et al. 2010

Eletrônica de Potência

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Existing Zero-Current Transition and Zero-Current Zero-Voltage Transition inverters provides favorable switching conditions for IGBT semiconductors increasing significantly the reactive energy of the converter. This situation offset the benefits accomplished by abovementioned soft-switching techniques. This paper presents a novel family of Zero-Current Zero-Voltage Transition inverters that overcome this problem by using no resonant tank in the auxiliary circuit. It accomplishes the favorable soft-switching conditions with a magnetically coupled auxiliary voltage source which is derived directly from the inverter filter inductor. Theoretical analysis of the inverter operation is presented and it is verified experimentally from a 1kW, 40kHz, laboratory prototype. The obtained experimental results prove the reliability of the proposed family of ZCZVT inverters.

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Section: A the Avs Circuit Structure And Operation Principlementioning

confidence: 99%

Section: A the Avs Circuit Structure And Operation Principlementioning

confidence: 99%

Zczvt Inverters With Magnetically Coupled Auxiliary Pole

Martins¹,

Stein²,

Russi³

et al. 2010

Eletrônica de Potência

View full text Add to dashboard Cite

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Design of Auxiliary Circuit Elements for Achieving Zero Voltage Switching in a Wireless Power Transfer System

Saha

Mukherjee

Galigekere

et al. 2020

2020 IEEE Energy Conversion Congress and Exposition (ECCE)

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A comparative analysis of simulation and experimental investigations of chosen soft-switched inverter topology

Dawidziuk

Jalbrzykowski²,

Prajs³

Proceedings of IEEE International Symposium on Industrial Electronics

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Absrruci I11 the paper a configuration of a soft-switched Quasi-Resonant Zero Voltage Switching Inverter (QRZVSI) is presented. The principle of its operation with methods of control is discussed, simulation voltage and current transients are given and an analysis of the operation of the proposed inverter is made. A detail analysis of the operation of resonant circuits with bi-directional current flow in the coupling circuit of a conventional inverter was made. The results of simulation calculations of losses anal the resulls of experimental studies of QRZVSI under soft switching are presented graphically. The advantages and disadvantages of tha QRzvS Inverter are discussed. I.. lNTRODUCTlQNRecently, in view of their advantages, interest in high frequency resonant converter systems has increased. High frequency operation, small dimensions, lower weight, hig;la efficiency and low switching losses are only a few of the features of the new topologies. In resonant inverters, semiconductor power devices are switched at zero voltages or currents thus theoretically eliminating switching losses. On the other hand, conduction losses rise in relation bo the peak value of the current wave and complexity of the inverter structure. Resonant inverters should be able 'to operate with PWM and should be so constructed that it is possible tis add simple commutation structures to the main circuits of the conventional voltage inverters.In the article a new inverter system is presented in which the quasi-resonant circuit is used as a system coupling the DC voltage source to a conventional voltage converter. The operation frequency of the quasi-resonant coupling circuit is several times higher than the PWM carrier frequency of' the inverter.In order to limit losses, the number of commutations during operation should be reduced. In the article a PWM control method suitable for a quasi-resonant inverter is presented. The PWM control strategy presented ensures soft-switching of all inverter valves during the flow o f load current in any direction.A detailed analysis of the resonant circuit operation with bi-directional current flow in the coupling circuit of the conventional inverter was made. The problem of the soft switching, of power valves with a return of energy to the supply source though omitted by many authors is a serious application problem. The analytical equations and simulation studies are in agreement with the results of the experimental investigations. An analysis comparing the total losses o f the resonant converter systems studied with the conventional hard switching converter was then made. QUASI-RESONANT ZVS PWM INVERTER.In Fig. 1 the Quasi-Resonant ZVS PWM Inverter analysed is presented. The circuit is simple in comparison with other Resonant Pole Inverters. The topology of the inverter is derived fiom the Auxiliary Resonant Commutated Pole Inverter 184. 1 Io Conventional W lnvertar Fig. 1. Quasi-Resonant ZVS PWM Inverter IJT. A. N ANALYSIS OF ZVS CIRCUIT OPERATIQNThe functioning of the circuit can be represented by t...

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A comparative analysis and experimental studies of resonant commutated pole inverter losses

Cited by 6 publications

References 7 publications

Zczvt Inverters With Magnetically Coupled Auxiliary Pole

Zczvt Inverters With Magnetically Coupled Auxiliary Pole

Design of Auxiliary Circuit Elements for Achieving Zero Voltage Switching in a Wireless Power Transfer System

A comparative analysis of simulation and experimental investigations of chosen soft-switched inverter topology

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