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  <xsd:element abstract="true" id="acpw_ContingenciesDisclosureAbstract" name="ContingenciesDisclosureAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_CostOfServiceAndOtherRevenueMember" name="CostOfServiceAndOtherRevenueMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DebtInstrumentBorrowingBaseSublimitsNumberOfReconciliationPeriods" name="DebtInstrumentBorrowingBaseSublimitsNumberOfReconciliationPeriods" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_DebtInstrumentLiquidityRatioBorrowingBaseEligibilityThreshold" name="DebtInstrumentLiquidityRatioBorrowingBaseEligibilityThreshold" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DebtInstrumentLiquidityRatioBorrowingBaseEligibilityThresholdMinimumEvaluationPeriod" name="DebtInstrumentLiquidityRatioBorrowingBaseEligibilityThresholdMinimumEvaluationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DebtInstrumentRestrictiveCovenantKeyExecutiveReplacementRestrictionNumberOfDays" name="DebtInstrumentRestrictiveCovenantKeyExecutiveReplacementRestrictionNumberOfDays" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DeliveryPeriodForEmasConsumablesAndRepairMaintenanceOrConsultingServicesMaximum" name="DeliveryPeriodForEmasConsumablesAndRepairMaintenanceOrConsultingServicesMaximum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DeliveryPeriodForEmasConsumablesAndRepairMaintenanceOrConsultingServicesMinimum" name="DeliveryPeriodForEmasConsumablesAndRepairMaintenanceOrConsultingServicesMinimum" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_DocumentAndEntityInformationAbstract" name="DocumentAndEntityInformationAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DurationPeriodInChangeInExecutiveOfficerSEmployment" name="DurationPeriodInChangeInExecutiveOfficerSEmployment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DurationPeriodOfPaymentOfSalaryAndHealthBenefitsAfterTermination" name="DurationPeriodOfPaymentOfSalaryAndHealthBenefitsAfterTermination" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_DurationPeriodOfProductDeliveryRelatedToCertainServicesOnDesignAndConsultation" name="DurationPeriodOfProductDeliveryRelatedToCertainServicesOnDesignAndConsultation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_EconomicDependencePolicyTextBlock" name="EconomicDependencePolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_EffectiveIncomeTaxRateReconciliationExpirationOfNetOperatingLosses" name="EffectiveIncomeTaxRateReconciliationExpirationOfNetOperatingLosses" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_ElectronicKeyboardsInc.Member" name="ElectronicKeyboardsInc.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_GeographicInformationTextBlock" name="GeographicInformationTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_HewlettPackardMember" name="HewlettPackardMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_IncreaseInRateOnCollateralHandlingFeesInEventOfDefault" name="IncreaseInRateOnCollateralHandlingFeesInEventOfDefault" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_IncreaseInRateOnFinanceChargesOrInterestRatesAsApplicableInEventOfDefault" name="IncreaseInRateOnFinanceChargesOrInterestRatesAsApplicableInEventOfDefault" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_InterestExpenseNet" name="InterestExpenseNet" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element id="acpw_LeaseholdImprovementsRenewalOptions" name="LeaseholdImprovementsRenewalOptions" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_LetterOfCreditExpiringonJune2017Member" name="LetterOfCreditExpiringonJune2017Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_LineOfCreditFacilityMaximumBorrowingCapacityPercentage" name="LineOfCreditFacilityMaximumBorrowingCapacityPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_LiquidityRatioForReconciliationPeriod" name="LiquidityRatioForReconciliationPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="instant" />
  <xsd:element abstract="true" id="acpw_LongTermLiabilitiesAbstract" name="LongTermLiabilitiesAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_LongTermLiabilitiesTableTextBlock" name="LongTermLiabilitiesTableTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_MISProductsMember" name="MISProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_MinimumNumberOfFirstTierProductsIncludedInSignificantMeas" name="MinimumNumberOfFirstTierProductsIncludedInSignificantMeas" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_MinimumNumberOfSecondTierProductsIncludedInSignificantMeas" name="MinimumNumberOfSecondTierProductsIncludedInSignificantMeas" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_Minimumliquidityratiorequirement" name="Minimumliquidityratiorequirement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:pureItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_NumberOfCriteriaToBeMetForRevenueRecognition" name="NumberOfCriteriaToBeMetForRevenueRecognition" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="instant" />
  <xsd:element id="acpw_NumberOfForeignCountriesRevenueDerived" name="NumberOfForeignCountriesRevenueDerived" nillable="true" substitutionGroup="xbrli:item" type="xbrli:integerItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_PaymentsForTaxesRelatedToSettlementOfEquityAwards" name="PaymentsForTaxesRelatedToSettlementOfEquityAwards" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element id="acpw_PaymentsOfStockIssuanceCostsShelfRegistration" name="PaymentsOfStockIssuanceCostsShelfRegistration" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_PietBrouwerElektrotechniekB.V.Member" name="PietBrouwerElektrotechniekB.V.Member" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_PowerQualityProductsMember" name="PowerQualityProductsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_ProductRevenueInPercentage" name="ProductRevenueInPercentage" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_ProfessionalFeesRelatedToIssuanceOfStock" name="ProfessionalFeesRelatedToIssuanceOfStock" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_SeveranceBenefitsAgreementsAbstract" name="SeveranceBenefitsAgreementsAbstract" nillable="true" substitutionGroup="xbrli:item" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageForfeitureRate" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsWeightedAverageForfeitureRate" nillable="true" substitutionGroup="xbrli:item" type="num:percentItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_SharesAddedTo2010StockIncentivePlanMember" name="SharesAddedTo2010StockIncentivePlanMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_SiliconValleyBankMember" name="SiliconValleyBankMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_StockIssuedDuringPeriodSharesPrivatePlacement" name="StockIssuedDuringPeriodSharesPrivatePlacement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:sharesItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_StockIssuedDuringPeriodValuePrivatePlacement" name="StockIssuedDuringPeriodValuePrivatePlacement" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_StockOptionsAndRestrictedStockMember" name="StockOptionsAndRestrictedStockMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_SupplementalUnemploymentBenefitsSeveranceBenefitsSalaryEquivalentPeriod" name="SupplementalUnemploymentBenefitsSeveranceBenefitsSalaryEquivalentPeriod" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_TradeReceivablesAllowanceForDoubtfulAccountsPolicyPolicyTextBlock" name="TradeReceivablesAllowanceForDoubtfulAccountsPolicyPolicyTextBlock" nillable="true" substitutionGroup="xbrli:item" type="nonnum:textBlockItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_TwoThousandAndTwoThousandTenStockIncentivePlansMember" name="TwoThousandAndTwoThousandTenStockIncentivePlansMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_U.K.AndGermanyMember" name="U.K.AndGermanyMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_UPSSystemsMember" name="UPSSystemsMember" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_UnrecognizedTaxBenefitsExcessTaxBenefitsStockBasedCompensation" name="UnrecognizedTaxBenefitsExcessTaxBenefitsStockBasedCompensation" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="credit" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_WarrantyLiabilitiesAxis" name="WarrantyLiabilitiesAxis" nillable="true" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType" xbrli:periodType="duration" />
  <xsd:element abstract="true" id="acpw_WarrantyLiabilitiesDomain" name="WarrantyLiabilitiesDomain" nillable="true" substitutionGroup="xbrli:item" type="nonnum:domainItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_WarrantyPeriodFromDateOfCommissioning" name="WarrantyPeriodFromDateOfCommissioning" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_WarrantyPeriodGrantedFromDateOfShipment" name="WarrantyPeriodGrantedFromDateOfShipment" nillable="true" substitutionGroup="xbrli:item" type="xbrli:durationItemType" xbrli:periodType="duration" />
  <xsd:element id="acpw_WorkingCapital" name="WorkingCapital" nillable="true" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType" xbrli:balance="debit" xbrli:periodType="instant" />
</xsd:schema>